KCAR [300319]: Preliminary Local Storm Report

NWUS51 KCAR 300319
LSRCAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
1119 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1000 PM FLOOD 2 N EAGLE LAKE 47.07N 68.59W
04/29/2008 AROOSTOOK ME PUBLIC

STATE ROUTE 11 FLOODED BETWEEN EAGLE LAKE AND WALLAGRASS.

1000 PM FLOOD 10 S MILLINOCKET 45.51N 68.71W
04/29/2008 PENOBSCOT ME LAW ENFORCEMENT

STATE ROUTE 11 NEAR THE PISCATAQUIS/PENOBSCOT TOWN LINE
HAS BEEN DAMAGED AND IS CLOSED.

1000 PM FLOOD BROWNVILLE 45.31N 69.03W
04/29/2008 PISCATAQUIS ME LAW ENFORCEMENT

STATE ROUTE 11...CHURCH STREET AND SCHOODIC LAKE ROAD IN
BROWNVILLE FLOODED.

1000 PM FLOOD MILO 45.25N 68.99W
04/29/2008 PISCATAQUIS ME LAW ENFORCEMENT

LAKEVIEW ROAD IN MILO FLOODED.

1000 PM FLOOD SEBEC 45.27N 69.12W
04/29/2008 PISCATAQUIS ME LAW ENFORCEMENT

SEBEC VILLAGE ROAD IN SEBEC FLOODED.

1000 PM FLOOD GUILFORD 45.17N 69.39W
04/29/2008 PISCATAQUIS ME LAW ENFORCEMENT

HUDSON AVENUE IN GUILFORD WASHED OUT.

1000 PM FLOOD CHARLESTON 45.08N 69.04W
04/29/2008 PENOBSCOT ME PUBLIC

STATE ROUTE 15 IN CHARLESTON WASHED OUT.

1000 PM FLOOD DEXTER 45.02N 69.29W
04/29/2008 PENOBSCOT ME LAW ENFORCEMENT

STATE ROUTE 7 FROM DEXTER TO DOVER-FOXCROFT FLOODED IN
SPOTS.

1000 PM FLOOD ABBOT 45.19N 69.45W
04/29/2008 PISCATAQUIS ME PUBLIC

BACK ABBOT ROAD IN ABBOT FLOODED.

1000 PM FLOOD HAMPDEN 44.74N 68.84W
04/29/2008 PENOBSCOT ME DEPT OF HIGHWAYS

US ROUTE 1A IN HAMPDEN FLOODED.

1000 PM FLOOD CASTINE 44.39N 68.80W
04/29/2008 HANCOCK ME DEPT OF HIGHWAYS

STATE ROUTE 166 AT STATE ROUTE 199 IN CASTINE FLOODED.

1000 PM BLIZZARD GLENBURN 44.91N 68.85W
04/29/2008 PENOBSCOT ME DEPT OF HIGHWAYS

STATE ROUTE 221 IN GLENBURN FLOODED.

1000 PM FLOOD 5 W CLAYTON LAKE 46.61N 69.63W
04/29/2008 AROOSTOOK ME PUBLIC

THE BLANCHET-MAIBEC ROAD NEAR ROUND POND FLOODED.

1000 PM FLOOD 4 E CLAYTON LAKE 46.61N 69.44W
04/29/2008 AROOSTOOK ME PUBLIC

THE REALTY ROAD AT UMSASKIS FLOODED.

&&

$$

MAT

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KREV [300251]: Preliminary Local Storm Report...summary

NWUS55 KREV 300251
LSRREV

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE RENO NV
751 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0815 AM NON-TSTM WND GST 2 S WASHOE CITY 39.29N 119.81W
04/29/2008 M62.00 MPH WASHOE NV MESONET

PEAK WIND AT WASHOE VALLEY SO FAR

0850 AM NON-TSTM WND GST 5 S RENO 39.47N 119.82W
04/29/2008 M58.00 MPH WASHOE NV MESONET

PEAK WIND AT 4790 FT AT APRS WIND SENSOR IN SOUTH RENO

0903 AM NON-TSTM WND GST 10 SSW RENO 39.40N 119.89W
04/29/2008 M68.00 MPH WASHOE NV MESONET

PEAK WIND AT GALENA RAWS SO FAR.

0910 AM NON-TSTM WND GST 5 SSW RENO 39.47N 119.86W
04/29/2008 M68.00 MPH WASHOE NV MESONET

DRI SENSOR AT WOLF RUN GOLF COURSE PEAK WIND SO FAR

1021 AM NON-TSTM WND GST WSW RENO 39.54N 119.83W
04/29/2008 U0.00 MPH WASHOE NV TRAINED SPOTTER

STRONG WINDS OVER U.S. 395 IN WASHOE VALLEY. BLOWING DUST
REDUCING VISIBILITY ON EAST SIDE OF WASHOE VALLEY AND
NEAR DAMONTE RANCH PKWY/U.S. 395. OCCURRED OVER LAST
HOUR.

1156 AM NON-TSTM WND GST 5 N RENO 39.61N 119.82W
04/29/2008 M66.00 MPH WASHOE NV OFFICIAL NWS OBS

PEAK GUST SO FAR. SUSTAINED WINDS 42 MPH.

1225 PM NON-TSTM WND GST 3 W LOYALTON 39.68N 120.31W
04/29/2008 M64.00 MPH SIERRA CA TRAINED SPOTTER

1230 PM NON-TSTM WND GST S CARSON CITY 39.17N 119.76W
04/29/2008 M60.00 MPH CARSON CITY NV MESONET

NDOT WIND SENSOR NEAR JUNCTION OF HIGHWAY 395 AND 50
WEST.

0104 PM NON-TSTM WND GST 3 WNW BRIDGEPORT 38.28N 119.27W
04/29/2008 M62.00 MPH MONO CA MESONET

RAWS WIND SENSOR.

0120 PM NON-TSTM WND GST 2 E MEEKS BAY 39.01N 120.08W
04/29/2008 M59.40 MPH EL DORADO CA BUOY

REPORTED ON LAKE TAHOE BY UC-DAVIS WEATHER DATA RAFT.

0140 PM NON-TSTM WND GST 7 ENE STEAD 39.68N 119.76W
04/29/2008 M60.00 MPH WASHOE NV MESONET

DESERT SPRINGS RAWS SITE.

0156 PM NON-TSTM WND GST SOUTH LAKE TAHOE 38.94N 119.98W
04/29/2008 M59.00 MPH EL DORADO CA ASOS

0200 PM NON-TSTM WND GST 3 NNW VIRGINIA CITY 39.35N 119.66W
04/29/2008 M66.00 MPH WASHOE NV MESONET

NDOT WIND SENSOR AT FIVE MILE FLAT. GUSTS AT OR ABOVE 60
MPH BETWEEN 100 AND 315 PM.

0213 PM NON-TSTM WND GST 5 WSW GARDNERVILLE 38.91N 119.83W
04/29/2008 M65.00 MPH DOUGLAS NV TRAINED SPOTTER

0236 PM NON-TSTM WND GST 5 E GARDNERVILLE 38.94N 119.65W
04/29/2008 M54.00 MPH DOUGLAS NV TRAINED SPOTTER

SOME BLOWING DUST

0350 PM NON-TSTM WND GST S MARKLEEVILLE 38.69N 119.78W
04/29/2008 M38.00 MPH ALPINE CA TRAINED SPOTTER

0430 PM NON-TSTM WND GST 2 S WASHOE CITY 39.29N 119.81W
04/29/2008 M69.00 MPH WASHOE NV MESONET

NDOT WIND SENSOR AT WASHOE VALLEY.

0447 PM NON-TSTM WND GST 4 N WALKER 38.58N 119.48W
04/29/2008 M65.00 MPH MONO CA MESONET

RAWS WIND SENSOR. PEAK GUST SO FAR TODAY. GUSTS OVER 60
MPH SINCE 247 PM.

0503 PM NON-TSTM WND GST 10 SSW RENO 39.40N 119.89W
04/29/2008 E71.00 MPH WASHOE NV MESONET

PEAK GUST AT GALENA RAWS TODAY.

0504 PM NON-TSTM WND GST 3 WNW BRIDGEPORT 38.28N 119.27W
04/29/2008 M64.00 MPH MONO CA MESONET

RAWS WIND SENSOR. PEAK GUST SO FAR TODAY.

0515 PM NON-TSTM WND GST WALKER LAKE 38.69N 118.74W
04/29/2008 M58.00 MPH MINERAL NV MESONET

NDOT WIND SENSOR.

0540 PM NON-TSTM WND GST NW CARSON CITY 39.17N 119.76W
04/29/2008 E58.00 MPH CARSON CITY NV MESONET

DRI SENSOR AT WESTERN NV COMMUNITY COLLEGE. ELEVATION
5035 FT.

&&

$$

MJD

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KRNK [300233]: Preliminary Local Storm Report

NWUS51 KRNK 300233
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1031 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0110 PM TORNADO VIRGILINA 36.55N 78.78W
04/28/2008 HALIFAX VA NWS STORM SURVEY

EF1 TORNADO WAS ON THE GROUND FROM APPROXIMATELY 110 TO
115 PM. THE INITIAL DAMAGE STARTED JUST SOUTH AND WEST OF
THE INTERSECTIONS OF HIGHWAYS 96 AND 49. THIS ON THE
WESTERN EDGE OF THE TOWN OF VIRGILINA. THE TORNADO WAS ON
THE GROUND FOR APPROXIMATELY ONE MILE TRAVELING TO THE
NORTHEAST. AT THE WIDEST POINT...THE TORNADO WAS 240
YARDS WIDE.6 HOMES WERE DAMAGED...AND NUMEROUS LARGE
TREES WERE DOWNED AND
SNAPPED.

&&

$$

WHP

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KVEF [300204]: Preliminary Local Storm Report

NWUS55 KVEF 300204
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
704 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0531 PM NON-TSTM WND GST LAS VEGAS (DOWNTOWN) 36.17N 115.15W
04/29/2008 M46 MPH CLARK NV ASOS

MEASURED AT MCCARRAN AIRPORT.

&&

$$

KLABELLE

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KMFR [300152]: Preliminary Local Storm Report

NWUS56 KMFR 300152
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
652 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0645 PM HEAVY RAIN 1 SSW OBRIEN 42.06N 123.71W
04/29/2008 M0.60 INCH JOSEPHINE OR TRAINED SPOTTER

0.60 INCHES OF PRECIPITATION SINCE 330AM PDT.

&&

$$

LUTZ

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KMFR [300151]: Preliminary Local Storm Report

NWUS56 KMFR 300151
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
651 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0645 PM SNOW 1 SSW OBRIEN 42.06N 123.71W
04/29/2008 U0.0 INCH JOSEPHINE OR TRAINED SPOTTER

RAIN CHANGED OVER TO SNOW IN A SHOWER. TRACE
ACCUMULATION. 44 DEGREES FAHRENHEIT. ELEVATION 1500FEET.

&&

$$

LUTZ

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KAKQ [300056]: Preliminary Local Storm Report...summary

NWUS51 KAKQ 300056
LSRAKQ

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE WAKEFIELD VA
838 PM EDT TUE APR 29 2008

A SMALL BUT INTENSE CLUSTER OF SEVERE THUNDERSTORMS DEVELOPED IN A
WARM, MOIST AIR MASS AHEAD OF AN APPROACHING COLD FRONT ON MONDAY
APRIL 28, 2008. THE STRONGEST STORMS OCCURRED OVER SOUTH CENTRAL AND
SOUTHEAST VIRGINIA AND PRODUCED SIX TORNADOES.

THE STRONGEST TORNADO TOUCHED DOWN NEAR SUFFOLK, VA AT APPROXIMATELY
405 PM MONDAY AFTERNOON. THE TORNADO HAD A PATH LENGTH OF ABOUT
10 MILES LONG AND A QUARTER MILE WIDE. THE PRELIMINARY RATING OF
THIS TORNADO IS AN EF-3, PENDING FURTHER ASSESSMENT. THE TORNADO
WAS ON THE GROUND FOR ABOUT 15 MINUTES AND CAUSED WIDESPREAD
DAMAGE TO HOMES AND A FEW BUSINESSES THROUGHOUT SUFFOLK, VA.

THE NATIONAL WEATHER SERVICE WEATHER FORECAST OFFICE IN WAKEFIELD
VIRGINIA IDENTIFIED AND OUTLOOKED THE THREAT FOR SEVERE
THUNDERSTORMS AS EARLY AS SATURDAY, APRIL 26. THE NATIONAL WEATHER
SERVICE IN WAKEFIELD ISSUED A WARNING FOR THE SEVERE THUNDERSTORM
WHICH PRODUCED THE SUFFOLK, VA TORNADO AT 303 PM, WHILE THE STORM
WAS STILL IN NORTHEASTERN NORTH CAROLINA. THE SEVERE THUNDERSTORM
CONTINUED TO INTENSIFY AND THE NATIONAL WEATHER SERVICE ISSUED A
TORNADO WARNING AT 311 PM FOR PORTIONS OF SUFFOLK VA, ALMOST AN
HOUR PRIOR TO THE STORM AFFECTING DOWNTOWN SUFFOLK. THE TORNADO
WARNING WAS REISSUED AT 350 PM, AND STATED THAT THE TORNADO WOULD
BE NEAR DOWNTOWN SUFFOLK BY 405 PM. AT 404 PM, THE NATIONAL
WEATHER SERVICE ISSUED A SEVERE WEATHER STATEMENT, STATING THAT
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR
DOWNTOWN SUFFOLK. THE PRELIMINARY LEAD TIME FOR THE TORNADO WAS 15
MINUTES.

&&

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0248 PM TORNADO 2 SE LAWRENCEVILLE 36.74N 77.83W
04/28/2008 F1 BRUNSWICK VA EMERGENCY MNGR

TORNADO TOUCHDOWN WITH SEVERAL TREES DOWN AND SNAPPED OFF
ALONG BELFIELD ROAD...WESTERN MILL ROAD AND MILAS DRIVE.
DAMAGE WAS RATED AS EF-1.

0251 PM TORNADO 3 SE LAWRENCEVILLE 36.73N 77.81W
04/28/2008 F1 BRUNSWICK VA NWS STORM SURVEY

CONTINUATION OF INTERMITTENT EF-1 TORNADO DAMAGE.
CONFIRMED TO HOMES ALONG A 300 YARD PATH.

0255 PM TORNADO 3 SW DOLPHIN 36.81N 77.83W
04/28/2008 F1 BRUNSWICK VA TRAINED SPOTTER

CONTINUATION OF EF-1 DAMAGE PATH. TWO TREES DOWN OFF RT
633.

0340 PM TORNADO 1 E COLONIAL HEIGHTS 37.26N 77.38W
04/28/2008 F1 CHESTERFIELD VA NWS EMPLOYEE

TORNADO REPORTED OFF TEMPLE AVE IN COLONIAL HEIGHTS FROM
MULTIPLE SOURCES. REPORTS OF DAMAGE INCLUDING OVERTURNED
CARS AT BEST BUY NEAR SOUTHPARK MALL. DAMAGE WAS RATED
EF-1.

0405 PM TORNADO DOWNTOWN SUFFOLK 36.72N 76.59W
04/28/2008 F3 CITY OF SUFFOLK VA PUBLIC

*** 200 INJ *** TORNADO INITIALLY TOUCHED DOWN AROUND 405
PM...WITH DAMAGE FIRST NOTED ABOUT 2 MILES NORTHEAST OF
LUMMIS. THE TORNADO HAD A PATH LENGTH OF ABOUT 10 MILES
LONG AND A QUARTER MILE WIDE. THE PRELIMINARY RATING OF
THIS TORNADO IS A STRONG EF-3...PENDING FURTHER
ASSESSMENT. THE TORNADO WAS ON THE GROUND FOR ABOUT 15 TO
20 MINUTES...BEFORE LIFTING AFTER CROSSING THE TOWN OF
DRIVER. THE TORNADO CAUSED WIDESPREAD DAMAGE TO HOMES AND
A FEW BUSINESSES THROUGHOUT THE CITY OF SUFFOLK.

0418 PM TORNADO 1 S CLAREMONT 37.21N 76.97W
04/28/2008 F1 SURRY VA LAW ENFORCEMENT

DOUBLE WIDE HOME DESTROYED. NUMEROUS TREES DOWN OR
SNAPPED OFF. DAMAGE WAS RATED AS EF-1.

0440 PM TORNADO 2 NW NORFOLK NAS 36.96N 76.33W
04/28/2008 F1 CITY OF NORFOLK VA EMERGENCY MNGR

EF-1 TORNADIC DAMAGE TO A BUILDING AND SEVERAL CARS
DAMAGED ON NORFOLK NAVAL BASE. NUMEROU TREES BLOWN DOWN
OR SNAPPED OFF. TORNADO DEVELOPED FROM THE SAME STORM
THAT PRODUCED THE EF-3 TORNADO IN SUFFOLK.

0445 PM TORNADO 1 S CARRSVILLE 36.73N 76.80W
04/28/2008 F1 ISLE OF WIGHT VA NWS STORM SURVEY

CONFIRMED EF-1 DAMAGE ON SOUTHSIDE OF CARRSVILLE...WITH
DAMAGE TO ELEVEN HOMES AND SIX AGRICULTURAL BUILDINGS
ALONG HARVEST DRIVE AND ELEYS LANE.

0455 PM TORNADO 3 SW GLOUCESTER COURTHO 37.38N 76.57W
04/28/2008 F0 GLOUCESTER VA NWS STORM SURVEY

EF-0 DAMAGE ON HICKORY FORK ROAD IN THE TOWN OF BELROI. 2
LARGE TREES DOWN.

0512 PM TORNADO 1 NW NORTH 37.48N 76.39W
04/28/2008 F0 MATHEWS VA NWS STORM SURVEY

EF-0 DAMAGE ALONG RTE 657...PRIOR TO RTE 14. DAMAGE PATH
ROUGHLY 1/4 MILE LONG AND 40 YARDS WIDE. NUMEROUS TREES
DOWN. TORNADO DEVELOPED FROM THE SAME STORM THAT PRODUCED
EF-0 DAMAGE IN GLOUCESTER COUNTY.
&&

$$

BHURLEY

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 300044
SWODY1
SPC AC 300041

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0741 PM CDT TUE APR 29 2008

VALID 300100Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

LATEST WATER VAPOR IMAGERY DEPICTS AN UPPER-LEVEL TROUGH OVER THE
PACIFIC NORTHWEST WITH AN UPPER-LEVEL RIDGE IN THE PLAINS AND
ANOTHER TROUGH ALONG THE ERN SEABOARD. THUNDERSTORMS ARE ONGOING IN
SOUTH FLORIDA IN A WEAKLY UNSTABLE ENVIRONMENT NEAR A FRONTAL
BOUNDARY. ELSEWHERE...THUNDERSTORMS ARE DEVELOPING IN WCNTRL MT NW
OF A SFC LOW. THIS CONVECTION IS LOCATED IN DIVERGENT FLOW ALOFT
AHEAD OF THE PACIFIC NORTHWEST TROUGH. ADDITIONAL STORMS MAY DEVELOP
EWD AND SWD ACROSS CNTRL MT AND SRN ID AS A BAND OF STRONG
LARGE-SCALE ASCENT MOVES EWD THIS EVENING. NONE OF THE ACTIVITY
ACROSS THE CONUS IS EXPECTED TO BE SEVERE TONIGHT.

..BROYLES.. 04/30/2008

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KAKQ [300039]: Preliminary Local Storm Report...summary

NWUS51 KAKQ 300039
LSRAKQ

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE WAKEFIELD VA
838 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0248 PM TORNADO 2 SE LAWRENCEVILLE 36.74N 77.83W
04/28/2008 F1 BRUNSWICK VA EMERGENCY MNGR

TORNADO TOUCHDOWN WITH SEVERAL TREES DOWN AND SNAPPED OFF
ALONG BELFIELD ROAD...WESTERN MILL ROAD AND MILAS DRIVE.
DAMAGE WAS RATED AS EF-1.

0251 PM TORNADO 3 SE LAWRENCEVILLE 36.73N 77.81W
04/28/2008 F1 BRUNSWICK VA NWS STORM SURVEY

CONTINUATION OF INTERMITTENT EF-1 TORNADO DAMAGE.
CONFIRMED TO HOMES ALONG A 300 YARD PATH.

0255 PM TORNADO 3 SW DOLPHIN 36.81N 77.83W
04/28/2008 F1 BRUNSWICK VA TRAINED SPOTTER

CONTINUATION OF EF-1 DAMAGE PATH. TWO TREES DOWN OFF RT
633.

0340 PM TORNADO 1 E COLONIAL HEIGHTS 37.26N 77.38W
04/28/2008 F1 CHESTERFIELD VA NWS EMPLOYEE

TORNADO REPORTED OFF TEMPLE AVE IN COLONIAL HEIGHTS FROM
MULTIPLE SOURCES. REPORTS OF DAMAGE INCLUDING OVERTURNED
CARS AT BEST BUY NEAR SOUTHPARK MALL. DAMAGE WAS RATED
EF-1.

0405 PM TORNADO DOWNTOWN SUFFOLK 36.72N 76.59W
04/28/2008 F3 CITY OF SUFFOLK VA PUBLIC

*** 200 INJ *** TORNADO INITIALLY TOUCHED DOWN AROUND 405
PM...WITH DAMAGE FIRST NOTED ABOUT 2 MILES NORTHEAST OF
LUMMIS. THE TORNADO HAD A PATH LENGTH OF ABOUT 10 MILES
LONG AND A QUARTER MILE WIDE. THE PRELIMINARY RATING OF
THIS TORNADO IS A STRONG EF-3...PENDING FURTHER
ASSESSMENT. THE TORNADO WAS ON THE GROUND FOR ABOUT 15 TO
20 MINUTES...BEFORE LIFTING AFTER CROSSING THE TOWN OF
DRIVER. THE TORNADO CAUSED WIDESPREAD DAMAGE TO HOMES AND
A FEW BUSINESSES THROUGHOUT THE CITY OF SUFFOLK.

0418 PM TORNADO 1 S CLAREMONT 37.21N 76.97W
04/28/2008 F1 SURRY VA LAW ENFORCEMENT

DOUBLE WIDE HOME DESTROYED. NUMEROUS TREES DOWN OR
SNAPPED OFF. DAMAGE WAS RATED AS EF-1.

0440 PM TORNADO 2 NW NORFOLK NAS 36.96N 76.33W
04/28/2008 F1 CITY OF NORFOLK VA EMERGENCY MNGR

EF-1 TORNADIC DAMAGE TO A BUILDING AND SEVERAL CARS
DAMAGED ON NORFOLK NAVAL BASE. NUMEROU TREES BLOWN DOWN
OR SNAPPED OFF. TORNADO DEVELOPED FROM THE SAME STORM
THAT PRODUCED THE EF-3 TORNADO IN SUFFOLK.

0445 PM TORNADO 2 NE CARRSVILLE 36.73N 76.80W
04/28/2008 F1 ISLE OF WIGHT VA NWS STORM SURVEY

CONFIRMED EF-1 DAMAGE ON SOUTHSIDE OF CARRSVILLE...WITH
DAMAGE TO ELEVEN HOMES AND SIX AGRICULTURAL BUILDINGS
ALONG HARVEST DRIVE AND ELEYS LANE.

0455 PM TORNADO 3 SW GLOUCESTER COURTHO 37.38N 76.57W
04/28/2008 F0 GLOUCESTER VA NWS STORM SURVEY

EF-0 DAMAGE ON HICKORY FORK ROAD IN THE TOWN OF BELROI. 2
LARGE TREES DOWN.

0512 PM TORNADO 1 NW NORTH 37.48N 76.39W
04/28/2008 F0 MATHEWS VA NWS STORM SURVEY

EF-0 DAMAGE ALONG RTE 657...PRIOR TO RTE 14. DAMAGE PATH
ROUGHLY 1/4 MILE LONG AND 40 YARDS WIDE. NUMEROUS TREES
DOWN. TORNADO DEVELOPED FROM THE SAME STORM THAT PRODUCED
EF-0 DAMAGE IN GLOUCESTER COUNTY.

&&
A SMALL BUT INTENSE CLUSTER OF SEVERE THUNDERSTORMS DEVELOPED IN A
WARM, MOIST AIR MASS AHEAD OF AN APPROACHING COLD FRONT ON MONDAY
APRIL 28, 2008. THE STRONGEST STORMS OCCURRED OVER SOUTH CENTRAL
AND SOUTHEAST VIRGINIA AND PRODUCED SIX TORNADOES.

THE STRONGEST TORNADO TOUCHED DOWN NEAR SUFFOLK, VA AT APPROXIMATELY
405 PM MONDAY AFTERNOON. THE TORNADO HAD A PATH LENGTH OF ABOUT
10 MILES LONG AND A QUARTER MILE WIDE. THE PRELIMINARY RATING OF
THIS TORNADO IS AN EF-3, PENDING FURTHER ASSESSMENT. THE TORNADO
WAS ON THE GROUND FOR ABOUT 15 MINUTES AND CAUSED WIDESPREAD
DAMAGE TO HOMES AND A FEW BUSINESSES THROUGHOUT SUFFOLK, VA.

THE NATIONAL WEATHER SERVICE WEATHER FORECAST OFFICE IN WAKEFIELD
VIRGINIA IDENTIFIED AND OUTLOOKED THE THREAT FOR SEVERE
THUNDERSTORMS AS EARLY AS SATURDAY, APRIL 26. THE NATIONAL WEATHER
SERVICE IN WAKEFIELD ISSUED A WARNING FOR THE SEVERE THUNDERSTORM
WHICH PRODUCED THE SUFFOLK, VA TORNADO AT 303 PM, WHILE THE STORM
WAS STILL IN NORTHEASTERN NORTH CAROLINA. THE SEVERE THUNDERSTORM
CONTINUED TO INTENSIFY AND THE NATIONAL WEATHER SERVICE ISSUED A
TORNADO WARNING AT 311 PM FOR PORTIONS OF SUFFOLK VA, ALMOST AN
HOUR PRIOR TO THE STORM AFFECTING DOWNTOWN SUFFOLK. THE TORNADO
WARNING WAS REISSUED AT 350 PM, AND STATED THAT THE TORNADO WOULD
BE NEAR DOWNTOWN SUFFOLK BY 405 PM. AT 404 PM, THE NATIONAL
WEATHER SERVICE ISSUED A SEVERE WEATHER STATEMENT, STATING THAT
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR
DOWNTOWN SUFFOLK. THE PRELIMINARY LEAD TIME FOR THE TORNADO WAS 15
MINUTES.
$$

BHURLEY

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KBOI [300026]: Preliminary Local Storm Report

NWUS55 KBOI 300026
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
626 PM MDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0158 PM HIGH SUST WINDS TWIN FALLS 42.56N 114.46W
04/29/2008 E35.00 MPH TWIN FALLS ID ASOS

TWIN FALLS ASOS REPORTING A PEAK WIND OF 35 MPH AT 1907Z.

0158 PM HIGH SUST WINDS JEROME 42.73N 114.52W
04/29/2008 M30.00 MPH JEROME ID ASOS

JEROME ASOS REPORTED A PEAK WIND OF 30 MPH AT 1953Z.

0158 PM HIGH SUST WINDS MOUNTAIN HOME AFB 43.05N 115.87W
04/29/2008 M35.00 MPH ELMORE ID ASOS

MOUNTAIN HOME REPORTING WIND SPEEDS OF 35 MPH G39 MPH AT
1927Z. WIND SPEED OF 35 MPH G44 MPH AT 1955Z. WIND SPEED
OF 35 WITH GUSTS TO 45 MPH AT 2055Z. ALSO REPORTING
REDUCED VISIBILITIES OF 3 SM IN BLDU AT 1849Z AND 1858Z.

0259 PM HIGH SUST WINDS BURNS 43.59N 119.06W
04/29/2008 M30.00 MPH HARNEY OR ASOS

BURNS ASOS REPORTED 30 MPH WINDS WITH GUSTS TO 39 MPH AT
2053Z.

0356 PM HIGH SUST WINDS BURNS 43.59N 119.06W
04/29/2008 M34.00 MPH HARNEY OR ASOS

BURNS ASOS REPORTED WINDS OF 34 G44 AT 2156Z.

0358 PM HIGH SUST WINDS TWIN FALLS 42.56N 114.46W
04/29/2008 M34.00 MPH TWIN FALLS ID ASOS

TWIN FALLS ASOS REPORTED WINDS OF 34 MPH WITH GUSTS TO 43
MPH AT 2153Z.

0509 PM HIGH SUST WINDS JEROME 42.73N 114.52W
04/29/2008 M34.00 MPH JEROME ID ASOS

JEROME ASOS REPORTED WINDS OF 34 MPH WITH GUSTS TO 41 MPH
AT 2253Z.

&&

$$

SLEWIS

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KOTX [300010]: Preliminary Local Storm Report

NWUS56 KOTX 300010
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
510 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0245 PM HEAVY SNOW SE WINCHESTER 46.24N 116.62W
04/29/2008 M6.0 INCH LEWIS ID TRAINED SPOTTER

LEWIS 2 WINCHESTER 3980 FT.

&&

$$

RB

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KMSO [292323]: Preliminary Local Storm Report

NWUS55 KMSO 292323
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
522 PM MDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0430 PM NON-TSTM WND DMG BUTTE 46.00N 112.53W
04/29/2008 SILVER BOW MT EMERGENCY MNGR

STRONG WINDS TORE THE ROOF OFF A TRAILER HOME.

&&

$$

LAKE

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KREV [292217]: Preliminary Local Storm Report...summary

NWUS55 KREV 292217
LSRREV

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE RENO NV
317 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0815 AM NON-TSTM WND GST 2 S WASHOE CITY 39.29N 119.81W
04/29/2008 M62.00 MPH WASHOE NV MESONET

PEAK WIND AT WASHOE VALLEY SO FAR

0850 AM NON-TSTM WND GST 5 S RENO 39.47N 119.82W
04/29/2008 M58.00 MPH WASHOE NV MESONET

PEAK WIND AT 4790 FT AT APRS WIND SENSOR IN SOUTH RENO

0903 AM NON-TSTM WND GST 10 SSW RENO 39.40N 119.89W
04/29/2008 M68.00 MPH WASHOE NV MESONET

PEAK WIND AT GALENA RAWS SO FAR.

0910 AM NON-TSTM WND GST 5 SSW RENO 39.47N 119.86W
04/29/2008 M68.00 MPH WASHOE NV MESONET

DRI SENSOR AT WOLF RUN GOLF COURSE PEAK WIND SO FAR

1021 AM NON-TSTM WND GST WSW RENO 39.54N 119.83W
04/29/2008 U0.00 MPH WASHOE NV TRAINED SPOTTER

STRONG WINDS OVER U.S. 395 IN WASHOE VALLEY. BLOWING DUST
REDUCING VISIBILITY ON EAST SIDE OF WASHOE VALLEY AND
NEAR DAMONTE RANCH PKWY/U.S. 395. OCCURRED OVER LAST
HOUR.

1156 AM NON-TSTM WND GST 5 N RENO 39.61N 119.82W
04/29/2008 M66.00 MPH WASHOE NV OFFICIAL NWS OBS

PEAK GUST SO FAR. SUSTAINED WINDS 42 MPH.

1225 PM NON-TSTM WND GST 3 W LOYALTON 39.68N 120.31W
04/29/2008 M64.00 MPH SIERRA CA TRAINED SPOTTER

1230 PM NON-TSTM WND GST S CARSON CITY 39.17N 119.76W
04/29/2008 M60.00 MPH CARSON CITY NV MESONET

NDOT WIND SENSOR NEAR JUNCTION OF HIGHWAY 395 AND 50
WEST.

0104 PM NON-TSTM WND GST 3 WNW BRIDGEPORT 38.28N 119.27W
04/29/2008 M62.00 MPH MONO CA MESONET

RAWS WIND SENSOR.

0115 PM NON-TSTM WND GST 3 NNW VIRGINIA CITY 39.35N 119.66W
04/29/2008 M62.00 MPH WASHOE NV MESONET

NDOT WIND SENSOR AT FIVE MILE FLAT.

0120 PM NON-TSTM WND GST 2 E MEEKS BAY 39.01N 120.08W
04/29/2008 M59.40 MPH EL DORADO CA BUOY

REPORTED ON LAKE TAHOE BY UC-DAVIS WEATHER DATA RAFT.

0140 PM NON-TSTM WND GST 7 ENE STEAD 39.68N 119.76W
04/29/2008 M60.00 MPH WASHOE NV MESONET

DESERT SPRINGS RAWS SITE.

0156 PM NON-TSTM WND GST SOUTH LAKE TAHOE 38.94N 119.98W
04/29/2008 M59.00 MPH EL DORADO CA ASOS

0213 PM NON-TSTM WND GST 5 WSW GARDNERVILLE 38.91N 119.83W
04/29/2008 M65.00 MPH DOUGLAS NV TRAINED SPOTTER

0247 PM NON-TSTM WND GST 4 N WALKER 38.58N 119.48W
04/29/2008 M62.00 MPH MONO CA MESONET

RAWS WIND SENSOR.

&&

$$

MJD

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KTAE [292208]: Preliminary Local Storm Report...corrected

NWUS52 KTAE 292208
LSRTAE

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TALLAHASSEE FL
608 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0106 PM TORNADO DEKLE BEACH 29.85N 83.62W
04/28/2008 F0 TAYLOR FL EMERGENCY MNGR

NWS SURVEY TEAM ESTIMATES EF-0 DAMAGE FROM A WATER SPOUT
THAT MOVED ASHORE AS A TORNADO AND CREATED A DAMAGE PATH
THAT EXTENDED ABOUT A HALF MILE INLAND. SEVERAL HOMES
DAMAGED BY AN APPARENT WATER SPOUT THAT CAME ASHORE.
MAJOR ROOF DAMAGE WAS REPORTED TO 3 HOMES. OTHER HOMES
HAD MINOR DAMAGE INCLUDING DAMAGE TO PORCHES AND SCREENS
AND BROKEN GLASS. THE DAMAGE OCCURRED ON DEKLE BEACH
ROAD...MEXICO ROAD AND PALMETTO ROAD. ADDITIONAL DETAILS
TO FOLLOW.

&&

$$

WOOL

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KVEF [292151]: Preliminary Local Storm Report

NWUS55 KVEF 292151
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
251 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0100 PM NON-TSTM WND GST 4 SW INDEPENDENCE 36.75N 118.25W
04/29/2008 M79.00 MPH INYO CA MESONET

MEASURED AT SIERRA ROTORS SITE NUMBER 7. ELEVATION 5167
FEET.

0100 PM NON-TSTM WND GST 5 WSW INDEPENDENCE 36.77N 118.28W
04/29/2008 M76.00 MPH INYO CA MESONET

MEASURED AT SIERRA ROTORS SITE NUMBER 1. ELEVATION 5697
FEET.

&&

$$

STACHELSKI

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KGYX [292042]: Preliminary Local Storm Report

NWUS51 KGYX 292042
LSRGYX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
442 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0435 PM FLOOD BOOTHBAY 43.88N 69.63W
04/29/2008 LINCOLN ME TRAINED SPOTTER

SEVERAL REPORTS OF STREET FLOODING.

&&

$$

MC

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 291922
SWODY1
SPC AC 291920

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0220 PM CDT TUE APR 29 2008

VALID 292000Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...NRN ROCKY MOUNTAIN REGION...

STRONG SURFACE HEATING AND STEEP LAPSE RATES ARE DESTABILIZING THE
ATMOSPHERE OVER PORTIONS OF THE NRN ROCKIES AHEAD OF COLD FRONT.
MEAGER LOW LEVEL MOISTURE WILL LIMIT CAPE TO BELOW 500 J/KG.
INCREASING UPPER DIVERGENCE AND LARGE SCALE ASCENT DOWNSTREAM FROM
EWD ADVANCING UPPER TROUGH WILL PROMOTE ISOLATED THUNDERSTORMS
INITIALLY OVER THE HIGHER TERRAIN AND ALSO IN VICINITY OF THE FRONT
AS IT CONTINUES EAST OVERNIGHT. INVERTED-V BOUNDARY LAYERS AND STEEP
LAPSE RATES SUGGEST ISOLATED STRONG WIND GUSTS AND SMALL HAIL MIGHT
BE POSSIBLE. HOWEVER...OVERALL THREAT WILL REMAIN MARGINAL DUE TO
LIMITED MOISTURE AND INSTABILITY.

...S FL...

RESIDUAL LOW LEVEL MOISTURE IN POST FRONTAL REGION WITH MID 60S
DEWPOINTS ALONG WITH SURFACE HEATING IS CONTRIBUTING TO MODEST
INSTABILITY OVER S FL. A FEW THUNDERSTORMS WILL REMAIN POSSIBLE
ALONG SEA BREEZE BOUNDARIES THIS AFTERNOON...BEFORE DIMINISHING THIS
EVENING WITH THE ONSET OF NOCTURNAL COOLING.

..DIAL.. 04/29/2008

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KREV [291919]: Preliminary Local Storm Report

NWUS55 KREV 291919
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1219 PM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0815 AM NON-TSTM WND GST 2 S WASHOE CITY 39.29N 119.81W
04/29/2008 M62.00 MPH WASHOE NV MESONET

PEAK WIND AT WASHOE VALLEY SO FAR

0850 AM NON-TSTM WND GST 5 S RENO 39.47N 119.82W
04/29/2008 M58.00 MPH WASHOE NV MESONET

PEAK WIND AT 4790 FT AT APRS WIND SENSOR IN SOUTH RENO

0903 AM NON-TSTM WND GST 10 SSW RENO 39.40N 119.89W
04/29/2008 M68.00 MPH WASHOE NV MESONET

PEAK WIND AT GALENA RAWS SO FAR.

0910 AM NON-TSTM WND GST 5 SSW RENO 39.47N 119.86W
04/29/2008 M68.00 MPH WASHOE NV MESONET

DRI SENSOR AT WOLF RUN GOLF COURSE PEAK WIND SO FAR

1021 AM NON-TSTM WND GST WSW RENO 39.54N 119.83W
04/29/2008 U0.00 MPH WASHOE NV TRAINED SPOTTER

STRONG WINDS OVER U.S. 395 IN WASHOE VALLEY. BLOWING DUST
REDUCING VISIBILITY ON EAST SIDE OF WASHOE VALLEY AND
NEAR DAMONTE RANCH PKWY/U.S. 395. OCCURRED OVER LAST
HOUR.

1156 AM NON-TSTM WND GST 5 N RENO 39.61N 119.82W
04/29/2008 M66.00 MPH WASHOE NV OFFICIAL NWS OBS

PEAK GUST SO FAR. SUSTAINED WINDS 42 MPH.

&&

$$

WHOHMANN

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KILN [291850]: Preliminary Local Storm Report...corrected

NWUS51 KILN 291850
LSRILN

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE WILMINGTON OH
250 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0834 PM HAIL 4 WSW GRATIOT 39.94N 82.29W
04/28/2008 E0.75 INCH LICKING OH LAW ENFORCEMENT

PEA TO PENNY SIZE HAIL COVERING THE GROUND.

&&

$$

SITES

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KILN [291847]: Preliminary Local Storm Report

NWUS51 KILN 291847
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
247 PM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0245 PM HAIL 4 WSW GRATIOT 39.94N 82.29W
04/29/2008 E0.75 INCH LICKING OH LAW ENFORCEMENT

PEA TO PENNY SIZE HAIL COVERING THE GROUND.

&&

$$

SITES

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KMFR [291847]: Preliminary Local Storm Report

NWUS56 KMFR 291847
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1147 AM PDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1146 AM HEAVY RAIN 2 WSW LAKESIDE 43.57N 124.20W
04/29/2008 M0.23 INCH COOS OR TRAINED SPOTTER

&&

$$

SUGDEN

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KAKQ [291540]: Preliminary Local Storm Report...corrected

NWUS51 KAKQ 291540
LSRAKQ

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE WAKEFIELD VA
1140 AM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0255 PM TORNADO 3 SE LAWRENCEVILLE 36.73N 77.81W
04/28/2008 BRUNSWICK VA NWS STORM SURVEY

EF1 TORNADO DAMAGE CONFIRMED TO HOMES ALONG A 300 YARD
PATH.

0255 PM TSTM WND DMG 3 SW DOLPHIN 36.81N 77.83W
04/28/2008 BRUNSWICK VA TRAINED SPOTTER

TWO TREES DOWN OFF RT 633.

0305 PM TORNADO 2 SE LAWRENCEVILLE 36.74N 77.83W
04/28/2008 BRUNSWICK VA EMERGENCY MNGR

TORNADO TOUCHDOWN WITH SEVERAL TREES DOWN AND SNAPPED OFF

ALONG BELFIELD ROAD... WESTERN MILL ROAD AND MILAS DRIVE.

0340 PM TORNADO 1 E COLONIAL HEIGHTS 37.26N 77.38W
04/28/2008 CHESTERFIELD VA NWS EMPLOYEE

TORNADO REPORTED OFF TEMPLE AVE IN COLONIAL HEIGHTS FROM
MULTIPLE SOURCES. REPORTS OF DAMAGE INCLUDING OVERTURNED
CARS AT BEST BUY NEAR SOUTHPARK MALL.

0344 PM TORNADO 3 SE COLONIAL HEIGHTS 37.23N 77.36W
04/28/2008 CITY OF PETERSBURG VA LAW ENFORCEMENT

TORNADO DAMAGE REPORTED AT INTERSECTION OF PUDDLEDOCK AND
TEMPLE AVE.

0413 PM TSTM WND DMG 1 S CLAREMONT 37.21N 76.97W
04/28/2008 SURRY VA LAW ENFORCEMENT

POTENTIAL TORNADO DAMAGE IN NORTHERN SURRY COUNTY. DOUBLE
WIDE HOME DESTROYED. TREE DOWN.

0420 PM TORNADO DOWNTOWN SUFFOLK 36.72N 76.59W
04/28/2008 CITY OF SUFFOLK VA PUBLIC

POSSIBLE TORNADO DAMAGED OBICI HOSPITAL OFF GOODWIN BLVD.
ROOF DAMAGE AND TREES DOWN.

0421 PM TORNADO DRIVER 36.82N 76.50W
04/28/2008 CITY OF SUFFOLK VA TRAINED SPOTTER

TORNADO ON THE GROUND REPORTED IN DRIVER MOVING NORTHEAST
TOWARDS HAMPTON ROADS AND DOWNTOWN NORFOLK.

0425 PM FUNNEL CLOUD DRIVER 36.82N 76.50W
04/28/2008 CITY OF SUFFOLK VA NWS EMPLOYEE

TREES AND POWER LINES DOWN ALONG SHOULDERS HILL RD.
FUNNEL SPOTTED.

0438 PM FUNNEL CLOUD 2 N DOWNTOWN PORTSMOUTH 36.87N 76.30W
04/28/2008 CITY OF NORFOLK VA PUBLIC

MULTIPLE PUBLIC REPORTS OF FUNNEL CLOUD CROSSING HAMPTON
ROAD AND THE MONITOR MERRIMACK BRIDGE.

0440 PM TORNADO 2 NW NORFOLK NAS 36.96N 76.33W
04/28/2008 CITY OF NORFOLK VA EMERGENCY MNGR

POTENTIAL TORNADIC DAMAGE TO A BUILDING AND SEVERAL CARS
DAMAGED ON NORFOLK NAVAL BASE. TREES DOWN.

0445 PM TORNADO CARRSVILLE 36.71N 76.83W
04/28/2008 ISLE OF WIGHT VA FIRE DEPT/RESCUE

TORNADO WITNESSED ON SOUTHSIDE OF CARRSVILLE WITH DAMAGE
TO ELEVEN HOMES AND SIX AGRICULTURAL BUILDINGS ALONG
HARVEST DRIVE AND ELEYS LN. STORM SURVEY TO DETERMINE
DAMAGE RATING PENDING.

0455 PM TSTM WND DMG NORTH 37.47N 76.38W
04/28/2008 MATHEWS VA PUBLIC

POSSIBLE TORNADO NEAR TOWN OF NORTH. TREES BLOWN DOWN.

&&

$$

BJACKSON

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KAKQ [291537]: Preliminary Local Storm Report

NWUS51 KAKQ 291537
LSRAKQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
1136 AM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0445 PM TORNADO CARRSVILLE 36.71N 76.83W
04/28/2008 ISLE OF WIGHT VA FIRE DEPT/RESCUE

TORNADO WITNESSED ON SOUTHSIDE OF CARRSVILLE WITH DAMAGE
TO ELEVEN HOMES AND SIX AGRICULTURAL BUILDINGS ALONG
HARVEST DRIVE AND ELEYS LN. STORM SURVEY TO DETERMINE
DAMAGE RATING PENDING.

&&

$$

BJACKSON

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KJAX [291440]: Preliminary Local Storm Report

NWUS52 KJAX 291440
LSRJAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1037 AM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0615 PM TSTM WND DMG CALLAHAN 30.56N 81.83W
04/28/2008 NASSAU FL LAW ENFORCEMENT

POWER WIRES DOWN IN CALLAHAN AND IN YULEE. TIME WAS
ESTIMATED BASED ON RADAR IMAGERY.

&&

$$

ARS

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KRAH [291354]: Preliminary Local Storm Report

NWUS52 KRAH 291354
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
953 AM EDT TUE APR 29 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0254 PM TSTM WND DMG 2 E WARRENTON 36.40N 78.12W
04/28/2008 WARREN NC DEPT OF HIGHWAYS

1 LARGE TREE DOWN ACROSS BIG WOODS ROAD, BLOCKING
TRAFFIC.

&&

$$

WSS

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 291255
SWODY1
SPC AC 291253

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0753 AM CDT TUE APR 29 2008

VALID 291300Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AMPLIFIED...SLOWLY PROGRESSIVE PATTERN WILL PREVAIL OVER THE NATION
THIS PERIOD. DEEP CLOSED LOW NOW N OF VANCOUVER IS EXPECTED TO
CONTINUE SLOWLY ESE...REACHING SE BC BY 12Z WEDNESDAY. DOWNSTREAM
FROM THE LOW...UPR RIDGE NOW CRESTING THE RCKYS WILL MOVE INTO THE
PLNS AS TROUGH FURTHER STRENGTHENS OVER ERN ONTARIO/WRN QUEBEC.

AT THE SFC...EXPECT LEE CYCLOGENESIS OVER CNTRL MT LATER TODAY AND
TONIGHT IN RESPONSE TO APPROACHING UPR SYSTEM. THE LOW LIKELY WILL
EVOLVE ALONG LEE TROUGH WELL E OF DEEP FRONTAL ZONE ASSOCIATED WITH
THE UPR TROUGH. THE FRONT SHOULD CATCH UP TO THE LOW LATE
TONIGHT/EARLY WEDNESDAY AS THE LOW REDEVELOPS SE TOWARD NE WY/WRN
SD.

...MT...
FAIRLY STRONG SFC HEATING SHOULD OCCUR ACROSS PARTS OF WRN AND MOST
OF CNTRL MT TODAY...AHEAD OF MAIN FRONTAL ZONE ASSOCIATED WITH
APPROACHING UPR LOW. GIVEN COOL EXISTING MID LVL TEMPERATURES...
THIS SHOULD SUPPORT DEVELOPMENT OF A FAIRLY DEEP MIXED LAYER...
POSSIBLY EXTENDING TO 600 MB BY MID AFTN. COUPLED WITH INCREASING
FORCING FOR ASCENT/STRENGTHENING WIND FIELD WITH UPR TROUGH...SETUP
COULD LEAD TO SCTD CLUSTERS/SHORT BANDS OF HIGH-BASED STORMS...
ESPECIALLY INVOF LEE LOW IN N CNTRL MT. FARTHER W...MORE
CONCENTRATED...POST-FRONTAL ACTIVITY IS EXPECTED IN WRN MT/ERN
ID...WHERE ENVIRONMENT SHOULD BECOME SOMEWHAT ANA-FRONTAL IN NATURE.

COMBINATION OF FAVORABLE THERMODYNAMIC CONDITIONS WITH STRENGTHENING
WIND FIELD SUGGESTS THE POTENTIAL FOR ISOLD LOCALLY DMGG WINDS WITH
THE STORMS IN CNTRL MT. ISOLD DMGG WIND GUSTS ALSO MAY OCCUR WITH
THE FRONTAL STORMS BEFORE COLD AIR BECOMES EXCESSIVELY DEEP.

...S FL...
GIVEN MODERATE UNIDIRECTIONAL WLY FLOW OVER REGION...A STRONG STORM
OR TWO COULD FORM OVER EXTREME S FL AND THE FL STRAITS BEFORE
SHALLOW COLD FRONT ASSOCIATED WITH ERN TROUGH FINALLY EDGES S OF THE
PENINSULA LATER TODAY.

..CORFIDI/CROSBIE.. 04/29/2008

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 290845
SWOD48
SPC AC 290844

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0344 AM CDT TUE APR 29 2008

VALID 021200Z - 071200Z

...DISCUSSION...
LARGE MID/UPPER LEVEL LOW -- NOW OFFSHORE PACIFIC NW AND BC -- IS
FCST TO MOVE ACROSS NWRN CONUS AND SWRN CANADA THROUGH DAY-3.
SHORTWAVES MOVING THROUGH BASE OF THIS SYSTEM WILL CONTRIBUTE TO
PRIMARY/OCCLUDING CYCLONE BY DAY-4/2ND-3RD FROM E-CENTRAL PLAINS
ACROSS MID/UPPER MS VALLEY REGION. SOME SVR POTENTIAL MAY DEVELOP
INVOF ASSOCIATED COLD FRONTAL ZONE FROM IL/INDIANA AREA SWWD ACROSS
SE TX DAY-4...SHIFTING EWD TOWARD SRN APPALACHIANS/SERN CONUS
DAY-5/3RD-4TH. HOWEVER...WITH LIKELIHOOD OF PARALLEL FLOW ALOFT TO
FRONT...AND RELATED QUESTIONS ABOUT STORM MODE AND
DESTABILIZATION...SVR PROBABILITIES STILL APPEAR TOO CONDITIONAL AND
UNCERTAIN IN COVERAGE/INTENSITY FOR CATEGORICAL OUTLOOK FOR THOSE
PERIODS. ANOTHER STG SHORTWAVE TROUGH AND POSSIBLE UPPER LOW MAY
DIGG SEWD FROM NERN PACIFIC ACROSS SWRN CONUS DAYS 7-8/5TH-7TH...BUT
THERE IS CONSIDERABLE SPREAD IN GUIDANCE REGARDING TRACK/INTENSITY
OF THIS SYSTEM AND ITS SFC RESPONSE.

..EDWARDS.. 04/29/2008

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 290732
SWODY3
SPC AC 290731

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0231 AM CDT TUE APR 29 2008

VALID 011200Z - 021200Z

...THERE IS A SLGT RISK OF SVR TSTMS ERN NEB/WRN IA SSWWD TO
PORTIONS N-CENTRAL/NE TX...

...SYNOPSIS...
BROAD MID/UPPER CYCLONE NOW OFFSHORE PACIFIC NW AND BC WILL SHIFT
ESEWD ACROSS PACIFIC NW AND OVER MUCH OF CENTRAL/NRN ROCKIES BY
1/12Z. LEAD SHORTWAVE TROUGH NOW OFFSHORE ORE SHOULD EJECT NWD
ACROSS MT DAY-2 AND REINFORCE/MERGE WITH CYCLONE CORE OVER SRN AB BY
START OF THIS PERIOD. MEANWHILE...VORTICITY LOBE -- NOW EVIDENT IN
MOISTURE CHANNEL IMAGERY OVER GULF OF AK...IS FCST TO REVOLVE SWD
THEN SEWD AROUND UPPER CYCLONE AND AMPLIFY CONSIDERABLY...REACHING
CENTRAL ROCKIES OR CENTRAL HIGH PLAINS BY 2/00Z. MODEL
INCONSISTENCIES DESCRIBED IN DAY-2 OUTLOOK WITH THIS SHORTWAVE
TROUGH...AND WITH LOCATION OF ASSOCIATED SFC CYCLONE ALONG COLD
FRONT...EXTEND INTO DAY-3 PERIOD...AND WILL AFFECT LOCATION/STRENGTH
OF GREATEST SVR POTENTIAL.

PRIND SFC LOW SHOULD LIFT NEWD ACROSS CENTRAL/N-CENTRAL KS EARLY IN
PERIOD AND BE LOCATED SOMEWHERE OVER ERN NEB BY 2/00Z...WITH COLD
FRONT TRAILING SWWD ACROSS S-CENTRAL/SERN KS...N-CENTRAL THROUGH
W-CENTRAL/SW OK AND TX PANHANDLE. DRYLINE SHOULD INTERSECT FRONT
INVOF N-CENTRAL OK AND EXTEND SSWWD ACROSS PARTS OF CENTRAL/SRN OK
AND N-CENTRAL/NW TX. COLD FRONT SHOULD OVERTAKE DRYLINE OVERNIGHT
AND MOVE EWD INTO MO...AND SEWD ACROSS ERN OK AND WRN/NRN TX.

...CENTRAL/SRN PLAINS...LOWER MO VALLEY...
SOMEWHAT TIGHTLY CLUSTERED SVR OUTBREAK IS POSSIBLE -- INCLUDING
SUPERCELLS WITH LARGE/DAMAGING HAIL AND POSSIBLY SIGNIFICANT
TORNADOES. ATTM...CONSENSUS OF SREF AND OPERATIONAL PROGS INDICATES
PORTIONS ERN KS...NERN OK...AND WRN MO MAY HAVE MAXIMUM OVERALL
POTENTIAL. HOWEVER...NON-TRIVIAL THREAT EXTENDS NWD TOWARD SERN
NEB/SRN IA/NRN MO AND SWD OVER ERN OK/NWRN AR. UNCERTAINTIES
PRECLUDING GREATER PROBABILITIES ATTM INVOLVE TRACK/INTENSITY OF SFC
LOW AND RELATED LOW LEVEL FORCING...NWD EXTENT OF MOST FAVORABLE
RETURN FLOW MOISTURE...AND CAPPING ALONG/AHEAD OF DRYLINE OVER ERN
OK AND RED RIVER REGION. AS SOME OF THESE MESOSCALE DETAILS BECOME
BETTER RESOLVED...CATEGORICAL RISK UPGRADE IS POSSIBLE FOR THIS FCST
PERIOD.

STRONGER DEEP-LAYER FORCING IS FCST TO LIFT NEWD ACROSS LOWER MO
VALLEY REGION DURING DAY...WITH EARLIER INITIATION OF STG-SVR TSTMS
LIKELY THAN FARTHER S WHERE SBCINH WILL BE STRONGER AND LOW LEVEL
CONVERGENCE SOMEWHAT WEAKER. NRN PORTION OUTLOOK INCLUDES
CONDITIONAL POTENTIAL OF RELATIVELY SMALL/LOW-TOPPED SUPERCELLS WITH
TORNADOES AND HAIL JUST NE-E OF SFC LOW. FARTHER S...LARGE
LOW-MIDLEVEL LAPSE RATES...STRONGER CAPPING...GREATER LOW LEVEL
MOISTURE AND STRONGER HEATING WILL CONTRIBUTE TO SOMEWHAT MAXIMIZED
POTENTIAL FOR DISCRETE....WIDELY SCATTERED TO ISOLATED DEVELOPMENT
OF SUPERCELLS WITH POTENTIAL FOR SIGNIFICANT SEVERE OVER ERN OK AND
SERN KS. DEVELOPMENT FARTHER S TOWARD N-CENTRAL TX BECOMES
PROGRESSIVELY MORE CONDITIONAL...ESPECIALLY BEFORE DARK. BAND OF
SVR TSTMS SHOULD EVOLVE BY AROUND 02/06Z FROM MO SWWD ACROSS ERN
OK/WRN AR AND PERHAPS NE TX...WITH THREAT EVOLVING MORE TOWARD
DAMAGING WIND...BUT WITH TORNADOES AND HAIL STILL POSSIBLE.

..EDWARDS.. 04/29/2008

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 290731
SWODY3
SPC AC 290729

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0229 AM CDT TUE APR 29 2008

VALID 011200Z - 021200Z

...THERE IS A SLGT RISK OF SVR TSTMS ERN NEB/WRN IA SSWWD TO
PORTIONS N-CENTRAL/NE TX...

...SYNOPSIS...
BROAD MID/UPPER CYCLONE NOW OFFSHORE PACIFIC NW AND BC WILL SHIFT
ESEWD ACROSS PACIFIC NW AND OVER MUCH OF CENTRAL/NRN ROCKIES BY
1/12Z. LEAD SHORTWAVE TROUGH NOW OFFSHORE ORE SHOULD EJECT NWD
ACROSS MT DAY-2 AND REINFORCE/MERGE WITH CYCLONE CORE OVER SRN AB BY
START OF THIS PERIOD. MEANWHILE...VORTICITY LOBE -- NOW EVIDENT IN
MOISTURE CHANNEL IMAGERY OVER GULF OF AK...IS FCST TO REVOLVE SWD
THEN SEWD AROUND UPPER CYCLONE AND AMPLIFY CONSIDERABLY...REACHING
CENTRAL ROCKIES OR CENTRAL HIGH PLAINS BY 2/00Z. MODEL
INCONSISTENCIES DESCRIBED IN DAY-2 OUTLOOK WITH THIS SHORTWAVE
TROUGH...AND WITH LOCATION OF ASSOCIATED SFC CYCLONE ALONG COLD
FRONT...EXTEND INTO DAY-3 PERIOD...AND WILL AFFECT LOCATION/STRENGTH
OF GREATEST SVR POTENTIAL.

PRIND SFC LOW SHOULD LIFT NEWD ACROSS CENTRAL/N-CENTRAL KS EARLY IN
PERIOD AND BE LOCATED SOMEWHERE OVER ERN NEB BY 2/00Z...WITH COLD
FRONT TRAILING SWWD ACROSS S-CENTRAL/SERN KS...N-CENTRAL THROUGH
W-CENTRAL/SW OK AND TX PANHANDLE. DRYLINE SHOULD INTERSECT FRONT
INVOF N-CENTRAL OK AND EXTEND SSWWD ACROSS PARTS OF CENTRAL/SRN OK
AND N-CENTRAL/NW TX. COLD FRONT SHOULD OVERTAKE DRYLINE OVERNIGHT
AND MOVE EWD INTO MO...AND SEWD ACROSS ERN OK AND WRN/NRN TX.

...CENTRAL/SRN PLAINS...LOWER MO VALLEY...
SOMEWHAT TIGHTLY CLUSTERED SVR OUTBREAK IS POSSIBLE -- INCLUDING
SUPERCELLS WITH LARGE/DAMAGING HAIL AND POSSIBLY SIGNIFICANT
TORNADOES. ATTM...CONSENSUS OF SREF AND OPERATIONAL PROGS INDICATES
PORTIONS ERN KS...NERN OK...AND WRN MO MAY HAVE MAXIMUM OVERALL
POTENTIAL. HOWEVER...NON-TRIVIAL THREAT EXTENDS NWD TOWARD SERN
NEB/SRN IA/NRN MO AND SWD OVER ERN OK/NWRN AR. UNCERTAINTIES
PRECLUDING GREATER PROBABILITIES ATTM INVOLVE TRACK/INTENSITY OF SFC
LOW AND RELATED LOW LEVEL FORCING...NWD EXTENT OF MOST FAVORABLE
RETURN FLOW MOISTURE...AND CAPPING ALONG/AHEAD OF DRYLINE OVER ERN
OK AND RED RIVER REGION. AS SOME OF THESE MESOSCALE DETAILS BECOME
BETTER RESOLVED...CATEGORICAL RISK UPGRADE IS POSSIBLE FOR THIS FCST
PERIOD.

STRONGER DEEP-LAYER FORCING IS FCST TO LIFT NEWD ACROSS LOWER MO
VALLEY REGION DURING DAY...WITH EARLIER INITIATION OF STG-SVR TSTMS
LIKELY THAN FARTHER S WHERE SBCINH WILL BE STRONGER AND LOW LEVEL
CONVERGENCE SOMEWHAT WEAKER. NRN PORTION OUTLOOK INCLUDES
CONDITIONAL POTENTIAL OF RELATIVELY SMALL/LOW-TOPPED SUPERCELLS WITH
TORNADOES AND HAIL JUST NE-E OF SFC LOW. FARTHER S...LARGE
LOW-MIDLEVEL LAPSE RATES...STRONGER CAPPING...GREATER LOW LEVEL
MOISTURE AND STRONGER HEATING WILL CONTRIBUTE TO SOMEWHAT MAXIMIZED
POTENTIAL FOR DISCRETE....WIDELY SCATTERED TO ISOLATED DEVELOPMENT
OF SUPERCELLS WITH POTENTIAL FOR SIGNIFICANT SEVERE OVER ERN OK AND
SERN KS. DEVELOPMENT FARTHER S TOWARD N-CENTRAL TX BECOMES
PROGRESSIVELY MORE CONDITIONAL...ESPECIALLY BEFORE DARK. BAND OF
SVR TSTMS SHOULD EVOLVE BY AROUND 02/06Z FROM MO SWWD ACROSS ERN
OK/ERN AR AND PERHAPS NE TX...WITH THREAT EVOLVING MORE TOWARD
DAMAGING WIND...BUT WITH TORNADOES AND HAIL STILL POSSIBLE.

..EDWARDS.. 04/29/2008

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 290601
SWODY2
SPC AC 290559

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 AM CDT TUE APR 29 2008

VALID 301200Z - 011200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
STG SHORTWAVE TROUGH -- NOW OVER PORTIONS KY/OH/INDIANA -- IS FCST
TO PIVOT CYCLONICALLY AROUND DIGGING UPPER CYCLONE DAY-1...BEFORE
WEAKENING AND LIFTING NWD FROM NEW ENGLAND THIS PERIOD. ASSOCIATED
SFC COLD FRONT -- NOW MOVING OFFSHORE MUCH OF ATLANTIC COAST -- WILL
MOVE THROUGH MOST OF GULF OF MEXICO...CUBA AND BAHAMAS BY BEGINNING
OF PERIOD. LARGE POSTFRONTAL ANTICYCLONE AND AREA OF OFFSHORE FLOW
OVER MUCH OF ERN GULF WILL LEAD TO VERY LIMITED MARINE MODIFICATION
THROUGH THIS PERIOD. RESULT WILL BE IN NARROW/WEAK CORRIDOR OF
PARTIALLY MOISTENED CONTINENTAL AIR RETURNING NWD...AS PART OF
SRN/CENTRAL PLAINS WAA REGIME INDUCED BY NEXT MAJOR SYSTEM ALOFT.

LARGE AND COMPLEX UPPER LEVEL CYCLONE APCHG COASTAL PACIFIC NW AND
BC ATTM SHOULD MOVE ESEWD WITH MEAN CYCLONE CENTER REACHING NWRN MT
BY ABOUT 1/00Z. SHORTWAVE TROUGH -- NOW EVIDENT IN MOISTURE CHANNEL
IMAGERY OFFSHORE ORE -- IS FCST TO MOVE EWD TO VICINITY NWRN WY BY
30/12Z...WITH SFC LOW INVOF WY/SD BORDER...AND OCCLUDED FRONT NWWD
ACROSS ERN MT TO SWRN SASK. WARM FRONTOGENESIS IS FCST BY THAT TIME
FROM BLACK HILLS SEWD ACROSS NERN KS. AS BAND OF LARGE SCALE ASCENT
IMMEDIATELY PRECEDING FIRST SHORTWAVE PIVOTS/EJECTS NEWD ACROSS ERN
MT EARLY IN PERIOD...ISOLATED TSTMS MAY FORM INVOF OCCLUDED
FRONT...BUT LIMITED MOISTURE/INSTABILITY WILL PRECLUDE ORGANIZED SVR
THREAT.

STRONGER LEE-SIDE CYCLONE IS FCST TO DEVELOP INVOF KS/CO BORDER BY
1/00Z...SW OF WARM/COLD FRONTAL OCCLUSION POINT THAT SHOULD BE
LOCATED AROUND S-CENTRAL SD. DEVELOPING DRYLINE IS FCST PARALLEL TO
AND 100-200 NM E OF LEE TROUGHING...FROM SFC LOW SWD ACROSS SRN HIGH
PLAINS. PROGS BEGIN TO DIFFER SUBSTANTIALLY IN POSITION OF SFC LOW
BY END OF PERIOD...RELATED TO INCONSISTENCIES IN PROGGED PHASE SPEED
OF SECOND SHORTWAVE TROUGH MOVING OVER NRN GREAT BASIN TOWARD
CENTRAL ROCKIES. HOWEVER...COLD FRONTAL ZONE BY 1/12Z SHOULD ARC
FROM ERN NEB SWD/SWWD THROUGH LOW TO SERN CO.

...CENTRAL HIGH PLAINS...MOSTLY AFTER DARK...
DIURNAL/DRYLINE DEVELOPMENT S OF SFC LOW STILL APPEARS UNLIKELY
BECAUSE OF STG CAPPING UNDER WELL-DEVELOPED ELEVATED MIXED
LAYER...COMBINED WITH IMMATURITY OF MOISTURE RETURN.

ISOLATED TO WIDELY SCATTERED...HIGH-BASED TSTMS ARE POSSIBLE LATE
AFTERNOON INTO EARLY EVENING INVOF SFC LOW AND ADJACENT PORTIONS
FRONTAL ZONE. THAT AREA WILL BE CHARACTERIZED BY RELATIVELY
MAXIMIZED COMBINATION OF SFC HEATING ON HIGH PLAINS...WEAKEST
CINH...AND LOW LEVEL MASS CONVERGENCE AROUND SFC CYCLONE. ANY SUCH
ACTIVITY WOULD POSE RISK FOR HAIL AND STG-SVR GUSTS.
HOWEVER...THREAT APPEARS TOO CONDITIONAL WITHIN ENVIRONMENT OF MRGL
MOISTURE TO PLACE UNDER CATEGORICAL OUTLOOK ATTM. SREF CONSENSUS
INDICATES DAYTIME SFC DEW POINTS INVOF SFC LOW -- WHERE LOW LEVEL
FORCING WILL BE STRONGEST -- WILL ONLY REACH LOW-MID 50S AT BEST.
THIS DISREGARDS A FEW RSM ENSEMBLE MEMBERS THAT INEXPLICABLY AND
ALMOST SPONTANEOUSLY GENERATE AREA OF 60-65 F DEW POINTS ALONG/AHEAD
OF NEB FRONTAL SEGMENT.

TSTM DEVELOPMENT IS MORE PROBABLE FROM EARLY EVENING ONWARD...INVOF
LOW LEVEL FRONTAL ZONE. EXPECT ENVIRONMENT OF STRONG FRONTOGENETIC
FORCING...FAVORABLE LOW-MIDLEVEL LAPSE RATES ABOVE STABLE SFC
LAYER...MAXIMIZED LOW LEVEL LIFT...WAA JUST ABOVE SFC...AND MRGL BUT
INCREASING MOISTURE. FCST SOUNDINGS INDICATE PARCELS BECOMING MORE
NEARLY SATURATED WITH TIME WHILE ISENTROPICALLY LIFTED TO EVENTUAL
LFC...WITH ELEVATED MUCAPES TO AROUND 500 J/KG AND AROUND 50 KT
EFFECTIVE SHEAR. THEREFORE POTENTIAL EXISTS FOR ISOLATED HAIL.
SOME GUSTS TO NEAR SVR LIMITS ALSO ARE POSSIBLE WHERE MOST INTENSE
DOWNDRAFTS PENETRATE COOL BUT RELATIVELY DRY BOUNDARY LAYER.

..EDWARDS.. 04/29/2008

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 290459
SWODY1
SPC AC 290456

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1156 PM CDT MON APR 28 2008

VALID 291200Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

AN UPPER-LEVEL TROUGH ACROSS THE ERN SEABOARD THIS MORNING IS
FORECAST TO MOVE OFFSHORE AS AN UPPER-LEVEL RIDGE MOVES EWD INTO THE
HIGH PLAINS. AT THE SFC...A COLD FRONT LOCATED IN SOUTH FLORIDA WILL
MOVE SLOWLY SWD AND SCATTERED THUNDERSTORMS SHOULD DEVELOP ALONG THE
BOUNDARY BY MIDDAY DUE TO LOW-LEVEL CONVERGENCE AND SFC HEATING.
ACROSS THE PACIFIC NORTHWEST...AN UPPER-LEVEL TROUGH WILL MOVE
ONSHORE EARLY TODAY. STRONG LARGE-SCALE ASCENT...STEEP LAPSE RATES
AND WARMING SFC TEMPS SHOULD RESULT IN ISOLATED THUNDERSTORM
DEVELOPMENT ACROSS THE PACIFIC NORTHWEST. AN AREA OF THUNDERSTORM
ACTIVITY MAY PERSIST OVERNIGHT AS THE UPPER-TROUGH BEGINS TO AFFECT
THE NRN ROCKIES. ATTM...A SEVERE THREAT IS NOT ANTICIPATED ACROSS
THE CONUS TODAY OR TONIGHT.

..BROYLES.. 04/29/2008

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