KHNX [120358]: Preliminary Local Storm Report

NWUS56 KHNX 120358
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
858 PM PDT SUN APR 11 2010

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

1243 PM NON-TSTM WND GST GRAPEVINE 34.94N 118.93W
04/11/2010 M53.00 MPH KERN CA OFFICIAL NWS OBS

NUMERSOUS SOUTH GUSTS 40+ DURING THE AFTERNOON.

1245 PM NON-TSTM WND GST 8 NW MERCED 37.38N 120.59W
04/11/2010 M46.00 MPH MERCED CA ASOS

CASTLE AIRPORT

1253 PM NON-TSTM WND GST MERCED 37.30N 120.48W
04/11/2010 M35.00 MPH MERCED CA ASOS

0108 PM NON-TSTM WND GST BAKERSFIELD 35.36N 119.00W
04/11/2010 M46.00 MPH KERN CA ASOS

NUMEROUS GUSTS 40+ THROUGHOUT THE AFTERNOON.

0131 PM NON-TSTM WND GST SAN LUIS NATIONAL WILDL 37.18N 120.79W
04/11/2010 M35.00 MPH MERCED CA MESONET

0131 PM NON-TSTM WND GST HURON 36.20N 120.10W
04/11/2010 M37.00 MPH FRESNO CA OFFICIAL NWS OBS

POST FRONTAL WEST WIND

0137 PM NON-TSTM WND GST PANOCHE ROAD 36.73N 120.48W
04/11/2010 M50.00 MPH FRESNO CA MESONET

RAWS WEST OF I-5 AT 2000 FOOT ELEVATION.

0138 PM NON-TSTM WND GST BUTTONWILLOW 35.40N 119.47W
04/11/2010 M47.00 MPH KERN CA OFFICIAL NWS OBS

0150 PM NON-TSTM WND GST KETTLEMAN HILLS 36.03N 120.06W
04/11/2010 M57.00 MPH KINGS CA MESONET

0215 PM NON-TSTM WND GST LAMONT 35.26N 118.91W
04/11/2010 M42.00 MPH KERN CA TRAINED SPOTTER

0343 PM NON-TSTM WND GST AVENAL 36.03N 120.11W
04/11/2010 M56.00 MPH KINGS CA OFFICIAL NWS OBS

0402 PM NON-TSTM WND GST 15 WSW LOS BANOS 36.98N 121.09W
04/11/2010 M35.00 MPH MERCED CA MESONET

0430 PM NON-TSTM WND GST LOST HILLS 35.62N 119.69W
04/11/2010 M37.00 MPH KERN CA OFFICIAL NWS OBS

0543 PM NON-TSTM WND GST LEMOORE NAS 36.26N 119.90W
04/11/2010 M41.00 MPH KINGS CA ASOS

WEST WIND AT FRONTAL PASSAGE.

0600 PM NON-TSTM WND GST FOUNTAIN SPRINGS 35.89N 118.92W
04/11/2010 M39.00 MPH TULARE CA MESONET

WEST WIND AND OCCURRED WITH FRONTAL PASSAGE.

0604 PM NON-TSTM WND GST HANFORD 36.33N 119.65W
04/11/2010 M43.00 MPH KINGS CA ASOS

POST FRONTAL GUST FROM THE WEST. PREVIOUS SOUTH WIND AT
37 MPH CREATED CONSIDERABLE BLOWING DUST IN THE HANFORD
AREA. VISIBILITY AT THE HNX NWS OFFICE WAS BREIFLY NEAR
1/2 MILE AT 315 PM.

0700 PM NON-TSTM WND DMG BAKERSFIELD 35.36N 119.00W
04/11/2010 KERN CA NEWSPAPER

NUMEROUS REPORTS OF TREES DOWN IN THE GREATER BAKERSFIELD
AREA WITH A FEW POWER LINES DOWN. ANY STRUCTURAL DAMAGE
IS UNKNOWN AT THIS TIME. TIME OF OCCURRENCES ROUGHLY
BETWEEN 1230 PM AND 500 PM PDT.

0715 PM NON-TSTM WND GST PORTERVILLE 36.06N 119.03W
04/11/2010 M38.00 MPH TULARE CA AWOS

WEST WIND GUST WITH FRONTAL PASSAGE.

&&

$$

BINGHAM

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KREV [120330]: Preliminary Local Storm Report

NWUS55 KREV 120330
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
830 PM PDT SUN APR 11 2010

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

0110 PM NON-TSTM WND GST 7 ESE MAMMOTH LAKES 37.61N 118.84W
04/11/2010 M51.00 MPH MONO CA AWOS

REPORTED AT MAMMOTH YOSEMITE AIRPORT.

0135 PM NON-TSTM WND GST S CARSON CITY 39.17N 119.76W
04/11/2010 M47.00 MPH CARSON CITY NV MESONET

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

0151 PM NON-TSTM WND GST 5 E GARDNERVILLE 38.94N 119.65W
04/11/2010 M48.00 MPH DOUGLAS NV TRAINED SPOTTER

0154 PM NON-TSTM WND GST SCHURZ 38.99N 118.83W
04/11/2010 M56.00 MPH MINERAL NV MESONET

NDOT WIND SENSOR.

0212 PM NON-TSTM WND GST HOLBROOK JUNCTION 38.73N 119.55W
04/11/2010 M47.00 MPH DOUGLAS NV MESONET

NDOT WIND SENSOR.

0233 PM NON-TSTM WND GST 6 ESE GARDNERVILLE 38.91N 119.63W
04/11/2010 M51.00 MPH DOUGLAS NV MESONET

RAWS WIND SENSOR AT FISH SPRINGS. ELEVATION 5230 FT.

0247 PM NON-TSTM WND GST WALKER 38.52N 119.48W
04/11/2010 M53.00 MPH MONO CA MESONET

RAWS WIND SENSOR. GUSTS OVER 50 MPH THROUGH 447 PM.

0300 PM NON-TSTM WND GST BENTON 37.82N 118.48W
04/11/2010 M47.00 MPH MONO CA MESONET

RAWS WIND SENSOR.

0303 PM NON-TSTM WND GST 12 SSW RENO 39.38N 119.91W
04/11/2010 M51.00 MPH WASHOE NV MESONET

RAWS WIND SENSOR AT GALENA. ELEVATION 5610 FT.

0304 PM NON-TSTM WND GST BRIDGEPORT 38.26N 119.22W
04/11/2010 M47.00 MPH MONO CA MESONET

RAWS WIND SENSOR.

0347 PM NON-TSTM WND GST 15 SW FALLON 39.32N 118.98W
04/11/2010 M50.00 MPH CHURCHILL NV MESONET

RAWS WIND SENSOR AT DEAD CAMEL MOUNTAIN.

0404 PM NON-TSTM WND GST WALKER LAKE 38.69N 118.74W
04/11/2010 M49.00 MPH MINERAL NV MESONET

NDOT WIND SENSOR.

0415 PM NON-TSTM WND GST SILVER SPRINGS 39.42N 119.22W
04/11/2010 M51.00 MPH LYON NV MESONET

0820 PM HEAVY SNOW 1 WNW MAMMOTH LAKES 37.65N 118.98W
04/11/2010 M7.0 INCH MONO CA TRAINED SPOTTER

CURRENT TOTAL WITH HEAVY SNOW CONTINUING.

&&

$$

WHOHMANN

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KAMA [120243]: Preliminary Local Storm Report...summary

NWUS54 KAMA 120243
LSRAMA

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
942 PM CDT SUN APR 11 2010

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

0452 PM HAIL 2 ESE WASHBURN 35.17N 101.54W
04/11/2010 E1.50 INCH ARMSTRONG TX TRAINED SPOTTER

HAM RADIO OPERATOR AND TRAINED SPOTTER RELAYED REPORT
OF ONGOING PING PONG BALL SIZE HAIL NEAR HIGHWAY 287 AND
FM 2373...BUT NOTED THE HAIL WAS MAINLY PEA SIZE WITH A
FEW LARGER STONES NEAR PING PONG BALL SIZE.

0641 PM HAIL 6 SSE LEFORS 35.36N 100.77W
04/11/2010 E1.00 INCH GRAY TX LAW ENFORCEMENT

HAIL WAS ONGOING.

0659 PM HAIL 6 S MIAMI 35.60N 100.63W
04/11/2010 M0.75 INCH GRAY TX TRAINED SPOTTER

REPORT IS FROM 4 MILES NORTH OF LAKETON IN GRAY COUNTY.

0703 PM HAIL MIAMI 35.69N 100.64W
04/11/2010 E1.75 INCH ROBERTS TX TRAINED SPOTTER

0705 PM HAIL MIAMI 35.69N 100.64W
04/11/2010 E1.00 INCH ROBERTS TX TRAINED SPOTTER

HAIL LASTED FOR 2 TO 3 MINUTES.

0829 PM HAIL 4 E BOOKER 36.46N 100.47W
04/11/2010 E1.75 INCH LIPSCOMB TX FIRE DEPT/RESCUE

0829 PM HAIL BOOKER 36.46N 100.54W
04/11/2010 E1.00 INCH LIPSCOMB TX FIRE DEPT/RESCUE

HAIL RANGING IN SIZE FROM PEA TO QUARTER. HAIL IS
ONGOING.

0831 PM HAIL 2 E BOOKER 36.46N 100.50W
04/11/2010 E1.75 INCH LIPSCOMB TX TRAINED SPOTTER

0832 PM HAIL 14 E PERRYTON 36.39N 100.55W
04/11/2010 E0.88 INCH OCHILTREE TX LAW ENFORCEMENT

0847 PM HAIL 6 WNW DARROUZETT 36.48N 100.42W
04/11/2010 E2.00 INCH LIPSCOMB TX BROADCAST MEDIA

VIEWER REPORT RELAYED FROM BROADCAST MEDIA.

&&

EVENT NUMBER AMA1000312 AMA1000313 AMA1000314 AMA1000316 AMA1000315
AMA1000317 AMA1000318 AMA1000320 AMA1000319 AMA1000321

$$

NUTTALL

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KMAF [120224]: Preliminary Local Storm Report

NWUS54 KMAF 120224
LSRMAF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
924 PM CDT SUN APR 11 2010

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

0916 PM HAIL 5 SSE CARLSBAD 32.34N 104.20W
04/11/2010 E0.88 INCH EDDY NM TRAINED SPOTTER

THE HAIL LASTED 2 MINUTES.

&&

$$

RYAN.BARNES

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KAMA [120203]: Preliminary Local Storm Report

NWUS54 KAMA 120203
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
903 PM CDT SUN APR 11 2010

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

0847 PM HAIL 6 WNW DARROUZETT 36.48N 100.42W
04/11/2010 E2.00 INCH LIPSCOMB TX BROADCAST MEDIA

VIEWER REPORT RELAYED FROM BROADCAST MEDIA.

&&

EVENT NUMBER AMA1000321

$$

BROST

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KABQ [120144]: Preliminary Local Storm Report

NWUS55 KABQ 120144
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
744 PM MDT SUN APR 11 2010

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

0739 PM HAIL 4 SW HAGERMAN 33.07N 104.38W
04/11/2010 E1.00 INCH CHAVES NM PUBLIC

&&

EVENT NUMBER ABQ1001809

$$

JLP

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KABQ [120143]: Preliminary Local Storm Report

NWUS55 KABQ 120143
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
742 PM MDT SUN APR 11 2010

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

0740 PM HAIL 3 SW HAGERMAN 33.08N 104.36W
04/11/2010 E1.00 INCH CHAVES NM PUBLIC

&&

EVENT NUMBER ABQ1001808

$$

JLP

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KAMA [120135]: Preliminary Local Storm Report

NWUS54 KAMA 120135
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
835 PM CDT SUN APR 11 2010

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

0831 PM HAIL 2 E BOOKER 36.46N 100.50W
04/11/2010 E1.75 INCH LIPSCOMB TX TRAINED SPOTTER

&&

EVENT NUMBER AMA1000320

$$

NUTTALL

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KABQ [120135]: Preliminary Local Storm Report

NWUS55 KABQ 120135
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
735 PM MDT SUN APR 11 2010

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

0732 PM HAIL 3 SW HAGERMAN 33.08N 104.36W
04/11/2010 E0.88 INCH CHAVES NM PUBLIC

&&

EVENT NUMBER ABQ1001807

$$

JLP

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KAMA [120132]: Preliminary Local Storm Report

NWUS54 KAMA 120132
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
831 PM CDT SUN APR 11 2010

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

0829 PM HAIL BOOKER 36.46N 100.54W
04/11/2010 E1.00 INCH LIPSCOMB TX FIRE DEPT/RESCUE

HAIL RANGING IN SIZE FROM PEA TO QUARTER. HAIL IS
ONGOING.

&&

EVENT NUMBER AMA1000318

$$

NUTTALL

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KAMA [120132]: Preliminary Local Storm Report

NWUS54 KAMA 120132
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
832 PM CDT SUN APR 11 2010

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

0832 PM HAIL 14 E PERRYTON 36.39N 100.55W
04/11/2010 E0.88 INCH OCHILTREE TX LAW ENFORCEMENT

&&

EVENT NUMBER AMA1000319

$$

BROST

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KAMA [120129]: Preliminary Local Storm Report

NWUS54 KAMA 120129
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
829 PM CDT SUN APR 11 2010

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

0829 PM HAIL 4 E BOOKER 36.46N 100.47W
04/11/2010 E1.75 INCH LIPSCOMB TX FIRE DEPT/RESCUE

&&

EVENT NUMBER AMA1000317

$$

NUTTALL

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KLOX [120115]: Preliminary Local Storm Report

NWUS56 KLOX 120115
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
615 PM PDT SUN APR 11 2010

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

0507 PM NON-TSTM WND DMG 2 SE SAN LUIS OBISPO 35.25N 120.64W
04/11/2010 SAN LUIS OBISPO CA LAW ENFORCEMENT

POWER LINES DOWN.

0511 PM NON-TSTM WND DMG 2 ENE PISMO BEACH 35.15N 120.59W
04/11/2010 SAN LUIS OBISPO CA LAW ENFORCEMENT

TREE DOWN IN ROADWAY.

&&

$$

HALL

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KLKN [120106]: Preliminary Local Storm Report

NWUS55 KLKN 120106
LSRLKN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO NV
606 PM PDT SUN APR 11 2010

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

0136 PM HIGH SUST WINDS WNW EUREKA AIRPORT 39.60N 116.01W
04/11/2010 M41.00 MPH EUREKA NV ASOS

41 MPH SUSTAINED WIND AT EUREKA AIRPORT ASOS

0310 PM NON-TSTM WND GST 12 E PINTO SUMMIT 39.41N 115.70W
04/11/2010 M62.00 MPH WHITE PINE NV MESONET

62 MPH WIND GUST AT PANCAKE SUMMIT NDOT

0315 PM NON-TSTM WND GST 4 SSE EUREKA 39.45N 115.93W
04/11/2010 M59.00 MPH EUREKA NV MESONET

59 MPH WIND GUST AT PINTO SUMMIT NDOT

0355 PM HIGH SUST WINDS 9 ESE TONOPAH 38.06N 117.09W
04/11/2010 M44.00 MPH NYE NV ASOS

44 MPH SUSTAINED WIND AT TONOPAH AIRPORT ASOS

0411 PM NON-TSTM WND GST 28 NNE TONOPAH 38.49N 117.10W
04/11/2010 M68.00 MPH NYE NV MESONET

68 MPH WIND GUST AT QUIMA PEAK RAWS

0420 PM HIGH SUST WINDS 46 E TONOPAH 38.19N 116.42W
04/11/2010 M51.00 MPH NYE NV MESONET

51 MPH SUSTAINED WIND AT WARM SPRINGS SUMMIT CEMP

0420 PM NON-TSTM WND GST 46 E TONOPAH 38.19N 116.42W
04/11/2010 M69.00 MPH NYE NV MESONET

69 MPH WIND GUST AT WARM SPRINGS SUMMIT CEMP

&&

$$

RCM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 120056
SWODY1
SPC AC 120055

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0755 PM CDT SUN APR 11 2010

VALID 120100Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS TX BIG BEND SEWD ACROSS THE RIO
GRANDE VALLEY INTO DEEP S TX...

...TX BIG BEND SEWD TO THE LOWER RIO GRANDE VALLEY OF DEEP S TX...
SHOWERS AND THUNDERSTORMS PERSIST OVER THE HIGHER TERRAIN W OF THE
RIO GRANDE VALLEY IN NERN MEXICO...ROUGHLY IN LINE WITH
HIGH-RESOLUTION WRF GUIDANCE. WITH TIME...MODELS EXPAND THE
CONVECTIVE COVERAGE...WITH PERSISTENT SELY LOW-LEVEL JET AND
ASSOCIATED/WEAK WARM ADVECTION LIKELY SUPPORTING THIS CONVECTIVE
INCREASE.

WITH AMPLE INSTABILITY ON THE U.S. SIDE OF THE RIVER...LOW-LEVEL
SELYS BENEATH MID-LEVEL WLYS SUGGEST THE POTENTIAL THAT A CLUSTER OF
STORMS COULD CROSS THE RIVER THIS EVENING...AND SHIFT ESEWD WITH
TIME EVENTUALLY REACHING DEEP S TX. THUS...WILL MAINTAIN SLIGHT
RISK OVERNIGHT...FOR CONDITIONAL HAIL/WIND POTENTIAL.

...TX PANHANDLE REGION INTO WRN OK...
LATEST RADAR REFLECTIVITY LOOPS REVEAL A DECREASE IN CONVECTIVE
INTENSITY OVER THE PAST HALF HOUR TO HOUR...CONSISTENT WITH MODEL
GUIDANCE AS WELL AS OBSERVED CAPPING E OF THE ONGOING STORMS. AS
CAP STRENGTHENS WITH TIME THIS EVENING...EXPECT A CONTINUED DECREASE
IN STORM INTENSITY. IN THE MEAN TIME...AN ISOLATED THREAT FOR LARGE
HAIL AND/OR LOCALLY-DAMAGING WINDS MAY CONTINUE FOR THE NEXT 1-2
HOURS.

..GOSS.. 04/12/2010

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KMAF [120030]: Preliminary Local Storm Report

NWUS54 KMAF 120030
LSRMAF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
730 PM CDT SUN APR 11 2010

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

0515 PM HAIL ALPINE 30.36N 103.67W
04/11/2010 E0.75 INCH BREWSTER TX PUBLIC

&&

$$

KATHERINE.HAWLEY

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KAMA [120015]: Preliminary Local Storm Report

NWUS54 KAMA 120015
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
715 PM CDT SUN APR 11 2010

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

0703 PM HAIL MIAMI 35.69N 100.64W
04/11/2010 E1.75 INCH ROBERTS TX TRAINED SPOTTER

&&

EVENT NUMBER AMA1000316

$$

NUTTALL

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KAMA [120015]: Preliminary Local Storm Report

NWUS54 KAMA 120015
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
715 PM CDT SUN APR 11 2010

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

0705 PM HAIL MIAMI 35.69N 100.64W
04/11/2010 E1.00 INCH ROBERTS TX TRAINED SPOTTER

HAIL LASTED FOR 2 TO 3 MINUTES.

&&

EVENT NUMBER AMA1000315

$$

BROST

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KAMA [120004]: Preliminary Local Storm Report

NWUS54 KAMA 120004
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
704 PM CDT SUN APR 11 2010

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

0659 PM HAIL 6 S MIAMI 35.60N 100.63W
04/11/2010 M0.75 INCH GRAY TX TRAINED SPOTTER

REPORT IS FROM 4 MILES NORTH OF LAKETON IN GRAY COUNTY.

&&

EVENT NUMBER AMA1000314

$$

KJS

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KMAF [112359]: Preliminary Local Storm Report

NWUS54 KMAF 112359
LSRMAF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
659 PM CDT SUN APR 11 2010

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

0640 PM HAIL MARATHON 30.21N 103.24W
04/11/2010 E2.00 INCH BREWSTER TX FIRE DEPT/RESCUE

THE HAIL LASTED 11 MINUTES.

&&

$$

RYAN.BARNES

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KAMA [112342]: Preliminary Local Storm Report

NWUS54 KAMA 112342
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
642 PM CDT SUN APR 11 2010

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

0641 PM HAIL 6 SSE LEFORS 35.36N 100.77W
04/11/2010 E1.00 INCH GRAY TX LAW ENFORCEMENT

HAIL WAS ONGOING.

&&

EVENT NUMBER AMA1000313

$$

BROST

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KVEF [112336]: Preliminary Local Storm Report

NWUS55 KVEF 112336
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
436 PM PDT SUN APR 11 2010

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

1008 AM NON-TSTM WND GST BISHOP AIRPORT 37.37N 118.36W
04/11/2010 M45.00 MPH INYO CA ASOS

1240 PM NON-TSTM WND GST SIERRA ROTORS 15 36.74N 118.12W
04/11/2010 M55.00 MPH INYO CA MESONET

1240 PM NON-TSTM WND GST SIERRA ROTORS 14 36.73N 118.17W
04/11/2010 M54.00 MPH INYO CA MESONET

0140 PM NON-TSTM WND GST SIERRA ROTORS 09 36.77N 118.19W
04/11/2010 M53.00 MPH INYO CA MESONET

0150 PM NON-TSTM WND GST SIERRA ROTORS 06 36.81N 118.09W
04/11/2010 M54.00 MPH INYO CA MESONET

0210 PM NON-TSTM WND GST SIERRA ROTORS 04 36.79N 118.17W
04/11/2010 M55.00 MPH INYO CA MESONET

0210 PM NON-TSTM WND GST SIERRA ROTORS 05 36.80N 118.13W
04/11/2010 M57.00 MPH INYO CA MESONET

0220 PM NON-TSTM WND GST SIERRA ROTORS 16 36.74N 118.13W
04/11/2010 M53.00 MPH INYO CA MESONET

0220 PM NON-TSTM WND GST SIERRA ROTORS 11 36.78N 118.13W
04/11/2010 M55.00 MPH INYO CA MESONET

0230 PM NON-TSTM WND GST SIERRA ROTORS 03 36.79N 118.21W
04/11/2010 M52.00 MPH INYO CA MESONET

0300 PM NON-TSTM WND GST MERCURY (NTS A23) 36.66N 116.00W
04/11/2010 M50.00 MPH NYE NV MESONET

&&

$$

BFUIS

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MESO: Mesoscale Discussion 0305

ACUS11 KWNS 112332
SWOMCD
SPC MCD 112332
OKZ000-KSZ000-TXZ000-120130-

MESOSCALE DISCUSSION 0305
NWS STORM PREDICTION CENTER NORMAN OK
0632 PM CDT SUN APR 11 2010

AREAS AFFECTED...ERN TX PNHDL/WRN OK INTO PARTS OF SWRN KS

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 112332Z - 120130Z

IT CURRENTLY APPEARS THAT THE RISK FOR SEVERE STORMS MAY REMAIN
SOMEWHAT LIMITED IN SCOPE...BUT TRENDS WILL CONTINUE TO BE
MONITORED.

A WEAK BUT FOCUSED DIVERGENT UPPER FLOW FIELD ACROSS THE
SOUTHEASTERN TEXAS PANHANDLE MAY BE AIDING THE CONTINUING SLOW
DEVELOPMENT OF A CLUSTER OF STORMS. STORMS HAVE GENERALLY BEEN
SCATTERED...BUT LIGHT WEST SOUTHWESTERLY DEEP LAYER FLOW IS
SUPPORTING PROPAGATION INTO AN INCREASINGLY MOIST AND UNSTABLE
ENVIRONMENT ACROSS THE LOWER PLAINS.

LATEST RUC GUIDANCE SUGGESTS THAT STEEP MID-LEVEL LAPSE RATES ARE
CONTRIBUTING TO MIXED LAYER CAPE IN EXCESS OF 2000 J/KG ACROSS
NORTHWEST TEXAS AND MUCH OF WESTERN OKLAHOMA INTO EXTREME SOUTHERN
KANSAS. AND THE BOUNDARY LAYER WILL PROBABLY BE RELATIVELY SLOW TO
COOL THROUGH THE 02-04Z TIME FRAME. GIVEN SIZABLE LOWER/MID
TROPOSPHERIC TEMPERATURE/DEW POINTS SPREADS...THE ENVIRONMENT WILL
REMAIN FAVORABLE FOR LOCALIZED DOWNBURSTS AND DEVELOPING SURFACE
COLD POOLS...WHICH MAY CONTINUE TO CONSOLIDATE AND SUPPORT UPSCALE
CONVECTIVE GROWTH LATE THIS AFTERNOON AND EVENING. IN ADDITION THE
RISK FOR POTENTIALLY DAMAGING WIND GUSTS...MARGINALLY SEVERE HAIL
WILL REMAIN POSSIBLE IN STRONGEST CELLS.

..KERR.. 04/11/2010

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...OUN...DDC...LUB...AMA...

LAT...LON 35390048 36050065 36710056 37120026 37069894 36349820
35369841 34599890 34139942 33719967 33580067 34410085
35390048

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KLOX [112309]: Preliminary Local Storm Report

NWUS56 KLOX 112309
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
409 PM PDT SUN APR 11 2010

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

1227 PM NON-TSTM WND DMG 2 ENE PISMO BEACH 35.15N 120.60W
04/11/2010 SAN LUIS OBISPO CA LAW ENFORCEMENT

TREE DOWN IN ROADWAY.

0244 PM NON-TSTM WND DMG 3 E PISMO BEACH 35.14N 120.57W
04/11/2010 SAN LUIS OBISPO CA LAW ENFORCEMENT

TREE UPROOTED.

0303 PM NON-TSTM WND DMG 5 SSE SANTA MARIA 34.87N 120.42W
04/11/2010 SANTA BARBARA CA LAW ENFORCEMENT

TREE DOWN IN ROADWAY.

&&

$$

HALL

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KVEF [112245]: Preliminary Local Storm Report

NWUS55 KVEF 112245
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
345 PM PDT SUN APR 11 2010

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

0200 PM NON-TSTM WND GST SIERRA ROTORS 10 36.77N 118.16W
04/11/2010 M59 MPH INYO CA MESONET

&&

$$

BFUIS

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KKEY [112208]: Preliminary Local Storm Report

NWUS52 KKEY 112208
LSRKEY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
608 PM EDT SUN APR 11 2010

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

0541 PM TSTM WND GST CUDJOE KEY 24.67N 81.50W
04/11/2010 M39 MPH LOWER KEYS IN MONR FL CO-OP OBSERVER

A WIND GUST OF 39 MPH...OR 34 KNOTS...WAS REPORTED BY A
CO-OP OBSERVER AT CUDJOE BAY. THIS WIND GUST WAS
ASSOCIATED WITH A PASSING THUNDERSTORM

&&

$$

WHOVORKA

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KAMA [112200]: Preliminary Local Storm Report...corrected

NWUS54 KAMA 112200
LSRAMA

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
500 PM CDT SUN APR 11 2010

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

0452 PM HAIL 2 ESE WASHBURN 35.17N 101.54W
04/11/2010 E1.50 INCH ARMSTRONG TX TRAINED SPOTTER

HAM RADIO OPERATOR AND TRAINED SPOTTER RELAYED REPORT
OF ONGOING PING PONG BALL SIZE HAIL NEAR HIGHWAY 287 AND
FM 2373...BUT NOTED THE HAIL WAS MAINLY PEA SIZE WITH A
FEW LARGER STONES NEAR PING PONG BALL SIZE.

&&

CORRECTED LOCATION...REMARKS

EVENT NUMBER AMA1000312

$$

BROST

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KAMA [112154]: Preliminary Local Storm Report

NWUS54 KAMA 112154
LSRAMA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
454 PM CDT SUN APR 11 2010

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

0452 PM HAIL WASHBURN 35.18N 101.57W
04/11/2010 E1.50 INCH ARMSTRONG TX TRAINED SPOTTER

HAM RADIO OPERATOR AND TRAINED SPOTTER RELAYED REPORT
OF ONGOING PING PONG BALL SIZE HAIL...BUT NOTED THE HAIL
WAS MAINLY PEA SIZE WITH A FEW LARGER STONES NEAR PING
PONG BALL SIZE.

&&

EVENT NUMBER AMA1000312

$$

BROST

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KLKN [112130]: Preliminary Local Storm Report

NWUS55 KLKN 112130
LSRLKN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO NV
230 PM PDT SUN APR 11 2010

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

0156 PM HIGH SUST WINDS TONOPAH 38.10N 117.25W
04/11/2010 M42 MPH NYE NV ASOS

&&

$$

86

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KREV [112017]: Preliminary Local Storm Report

NWUS55 KREV 112017
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
117 PM PDT SUN APR 11 2010

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

0117 PM NON-TSTM WND GST 3 E SMITH VALLEY 38.79N 119.29W
04/11/2010 E60.00 MPH LYON NV TRAINED SPOTTER

SPOTTER REPORTED 50-60 MPH WIND GUSTS WITH SUSTAINED
WINDS OF 30 MPH. SPOTTER ALSO REPORTED BLOWING DUST.

&&

$$

MCGUIRE

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 111957
SWODY1
SPC AC 111955

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0255 PM CDT SUN APR 11 2010

VALID 112000Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS THIS AFTERNOON INTO EVENING
OVER PARTS OF WRN/SWRN TX AND FAR SWRN OK...

...THERE IS A SLGT RISK OF SVR TSTMS TONIGHT OVER PARTS OF THE LOWER
RIO GRANDE VALLEY...

...WRN/SWRN TX INTO FAR SWRN OK...

THE 15 PERCENT HAIL AND CATEGORICAL SLIGHT RISK LINES HAVE BEEN
ADJUSTED TO BETTER FIT WITH WHERE THE STRONGEST AIR MASS
DESTABILIZATION IS OCCURRING.

THE COUPLING OF DAYTIME HEATING WITH THE NWD RETURN OF AN
INCREASINGLY MOIST AIR MASS THROUGH THE LOWER RIO GRANDE VALLEY INTO
WRN TX IS SUPPORTING AIR MASS DESTABILIZATION THIS AFTERNOON WHERE
MLCAPE HAS INCREASED TO 1000-1500 J/KG. INITIAL TSTM FORMATION IS
OCCURRING ALONG THE WRN EDGE OF THE INSTABILITY AXIS FROM S OF CVS
TO NEAR MRF. ADDITIONAL STORM DEVELOPMENT IS EXPECTED THROUGH THE
REMAINDER OF THE DIURNAL HEATING CYCLE FROM VICINITY OF RETREATING
WEAK WARM FRONT OVER THE SRN TX PNHDL SWWD INTO SWRN TX.
HERE...FURTHER HEATING/DESTABILIZATION IN CONJUNCTION WITH THE
INFLUENCE OF A WEAK MIDLEVEL VORTICITY MAXIMUM CURRENTLY MOVING
THROUGH FAR WRN TX AND SERN NM SHOULD SUPPORT SCATTERED MULTICELL
STORM CLUSTERS CAPABLE OF MAINLY SEVERE HAIL.

STORMS SHOULD TEND TO WEAKEN LATER THIS EVENING AS THE BOUNDARY
LAYER COOLS AND STABILIZES.

...LOWER RIO GRANDE VALLEY...

NO CHANGES MADE TO CURRENT FORECAST.

...S FL...

ONLY A SLIGHT ADJUSTMENT HAVE BEEN MADE TO THE FIVE PERCENT WIND
PROBABILITY TO ACCOMMODATE THE LOCATION OF THE MCS CURRENTLY
PROPAGATING SWD THROUGH THE FAR SRN PENINSULA.

..MEAD.. 04/11/2010

.PREV DISCUSSION... /ISSUED 1117 AM CDT SUN APR 11 2010/

...SRN HI PLAINS...
THE STEERING FLOW WILL REMAIN RATHER WEAK ACROSS THE SRN
PLAINS...OTRW CONDITIONS ARE BECOMING INCREASINGLY FAVORABLE FOR
DEVELOPMENT OF STRONG/SEVERE THUNDERSTORMS BEGINNING THIS AFTERNOON.
GULF MOISTURE CONTINUES TO SPREAD N/NNWWD UNDER AN EXTENSIVE EML
WHICH COVERS MUCH OF THE PLAINS.

MORNING CONVECTIVE CLOUDINESS SHOULD GRADUALLY DISSIPATE FROM THE W
ACROSS SWRN TX WHICH WILL ALLOW HEATING AND SURFACE INSTABILITY TO
INCREASE. WITH DEWPOINTS WELL INTO THE 50S BY LATE AFTERNOON AS
TEMPS CLIMB THRU THE 70S...MLCAPES AOA 2000 J/KG WILL DEVELOP ACROSS
THE SRN PANHANDLE SWWD TO THE ERN SLOPES OF THE DAVIS MTNS. WITH
THE STEEP LAPSE RATES AND RELATIVELY COOL MID LEVELS...HAIL WILL BE
COMMON WITH THE STRONGEST UPDRAFTS. WHILE OVERALL SHEAR NOT
SUPPORTIVE OF SUPERCELLS...THE UNSTABLE ENVIRONMENT FAVORS SOME
ROTATION IN STRONGEST STORMS WHICH WILL RAISE THE THREAT FOR BOTH
LARGE HAIL AND LOCALIZED DAMAGING DOWNBURSTS.

INITIATION EXPECTED TO OCCUR VICINITY DISSIPATING FRONTAL ZONE THAT
LIES FROM SRN TX PANHANDLE WWD INTO ERN NM. THE CINH SHOULD WEAKEN
FIRST NEAR THE WRN EDGE OF MOISTURE GRADIENT FROM SERN NM TO DAVIS
MTNS. STORMS WILL MOVE ONLY SLOWLY E/SEWD IN THE WEAK FLOW
ENVIRONMENT POSSIBLY CONTINUING A MARGINAL HAIL/WIND THREAT AFTER
SUNSET INTO W CENTRAL TX PRIOR TO WEAKENING TO BELOW SEVERE.

...LOWER RIO GRANDE VALLEY...
DEEP MOISTURE IS SPREADING UP THE LWR RIO GRANDE VALLEY AS OBSERVED
ON THE 12Z BRO SOUNDING WITH PW/S OF 1.8 INCHES. AGAIN AN EML
OVERLAYS S TX WITH A STOUT CAP NOTED ON THE DRT SOUNDING. HEATING
OF THE HIGHER TERRAIN W OF THE LOWER RIO GRANDE IN MEXICO EXPECTED
TO INITIATE STRONG THUNDERSTORMS DURING THE AFTERNOON. BY THIS
EVENING MODELS INDICATE LOW LEVEL SELY JET INCREASES TO 30-35 KTS
LWR RIO GRANDE VALLEY WHICH SUPPORTS THE STORMS IN MEXICO ORGANIZING
INTO CLUSTERS AND POSSIBLE BOWS AS THEY MOVE SEWD ACROSS THE RIVER
INTO SRN TX. WITH MLCAPES TO 2000 J/KG AND BULK SHEAR INCREASING TO
40-50KT IN CONCERT WITH THE LOW LEVEL JET...APPEARS THERE WILL BE A
THREAT OF DAMAGING WINDS ASSOCIATED WITH THE ACTIVITY MOVING ACROSS
LWR RIO GRANDE TONIGHT INTO S TX ALONG WITH LARGE HAIL. A SLIGHT
RISK HAS BEEN ADDED THIS AREA.

...S FL...
A SLOW MOVING MCS HAS DEVELOPED VICINITY THE SWRN FL COAST THIS AM
IN RESPONSE TO THE PASSAGE OF A MID LEVEL TROUGH FROM THE ERN GULF
AND AN INCREASINGLY UNSTABLE ENVIRONMENT S FL. COOL MID LEVEL
TEMPS...-12C AT 500 MB...SUPPORT HAIL WITH THE STRONGEST CORES AS
WELL AS STRONG WIND GUSTS. ACTIVITY EXPECTED TO REMAIN GENERALLY
BELOW SEVERE LEVELS...AS THE MCS CONTINUES SEWD ACROSS SRN FL TOWARD
THE UPPER KEYS THIS AFTERNOON.

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MESO: Mesoscale Discussion 0304

ACUS11 KWNS 111943
SWOMCD
SPC MCD 111943
TXZ000-NMZ000-112145-

MESOSCALE DISCUSSION 0304
NWS STORM PREDICTION CENTER NORMAN OK
0243 PM CDT SUN APR 11 2010

AREAS AFFECTED...SERN NM THROUGH PARTS OF WRN TX

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 111943Z - 112145Z

THUNDERSTORMS WILL LIKELY CONTINUE DEVELOPING OVER PORTIONS OF WRN
TX AND SERN NM THIS AFTERNOON INTO THE EVENING. STRONGER STORMS MAY
BECOME CAPABLE OF PRODUCING ISOLATED MARGINALLY SEVERE HAIL AND
GUSTY WINDS. WW DURING THE NEXT COUPLE HOURS IS UNLIKELY...BUT
TRENDS WILL CONTINUE TO BE MONITORED.

THIS AFTERNOON A DRYLINE EXTENDS FROM A SURFACE LOW IN THE SRN TX
PANHANDLE SWWD INTO SERN NM THEN SWD TO JUST E OF THE DAVIS
MOUNTAINS IN WRN TX. AN OUTFLOW BOUNDARY HAS SPREAD WWD INTO SERN
NM...AND A FEW STORMS HAVE DEVELOPED SOUTH OF CLOVIS ALONG THE
DRYLINE/OUTFLOW BOUNDARY MERGER. OTHER STORMS ARE IN THE PROCESS OF
DEVELOPING ALONG SRN END OF THE OUTFLOW BOUNDARY OVER SERN NM AND
FARTHER SOUTH OVER THE DAVIS MOUNTAINS OF WRN TX. AXIS OF CLEARING
HAS PROMOTED STRONG DIABATIC HEATING FROM FAR WRN TX NWD THROUGH ERN
NM. HOWEVER...12Z RAOB FROM MIDLAND INDICATED ONLY A SHALLOW MOIST
LAYER NEAR THE SURFACE...AND OBSERVATIONAL TRENDS SHOW DEWPOINTS
MIXING DOWN INTO THE 40S. DESPITE THE PRESENCE OF STEEP LAPSE
RATES...THE MEAGER LOW LEVEL MOISTURE IS LIMITING MLCAPE TO AOB 500
J/KG IN THIS REGION.

THE SELY LOW LEVEL WINDS SHOULD ADVECT SLIGHTLY RICHER BOUNDARY
LAYER MOISTURE WWD...RESULTING IN SOME INCREASE IN INSTABILITY
TOWARD EARLY EVENING. STORMS DEVELOPING IN THIS REGION WILL REMAIN
IN A WEAK DEEP LAYER FLOW/SHEAR REGIME FAVORABLE FOR MULTICELLS.
MODEST VERTICAL SHEAR AND INSTABILITY SUGGEST THE STORMS WILL NOT BE
PARTICULARLY ORGANIZED. BUT STEEP LAPSE RATES WILL CONTRIBUTE TO A
THREAT FOR ISOLATED HAIL AND GUSTY WINDS.

..DIAL.. 04/11/2010

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LUB...MAF...ABQ...

LAT...LON 32480301 31030255 30290304 30410368 31710457 32910459
33850375 34380301 34670234 34580199 34200204 33690262
32480301

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KMFL [111825]: Preliminary Local Storm Report

NWUS52 KMFL 111825
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
225 PM EDT SUN APR 11 2010

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

0140 PM WATER SPOUT 2 E DELRAY BEACH 26.46N 80.06W
04/11/2010 PALM BEACH FL PUBLIC

PUBLIC REPORTED WATERSPOUT 2 MILES EAST OF DELRAY BEACH

&&

$$

TMOSLEY

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 111720
SWODY2
SPC AC 111718

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1218 PM CDT SUN APR 11 2010

VALID 121200Z - 131200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

THE PRIMARY FEATURE OF INTEREST DURING THE DAY TWO PERIOD IS AN
INTENSE MID- AND UPPER-LEVEL TROUGH OVER THE INTER-MOUNTAIN WEST
WHICH WILL ASSUME A NEGATIVE-TILT IN RESPONSE TO THE NEWD
PROGRESSION OF A JET STREAK FROM SRN CA INTO THE CNTRL ROCKIES. AT
THE SURFACE...THE APPROACH OF THE UPPER TROUGH WILL ENHANCE LEE
CYCLONE FORMATION AND SUBSEQUENT DEEPENING OVER WY...ALONG THE WRN
EXTENSION OF A FRONTOGENETIC BAROCLINIC ZONE WHICH WILL SLOWLY LIFT
NWD THROUGH THE NRN PLAINS AND UPPER MIDWEST.

...NRN PLAINS INTO UPPER MS VALLEY...

THE DEEPENING SURFACE LOW WILL SERVE TO HASTEN THE POLEWARD
TRANSPORT OF AN INCREASINGLY MOIST AIR MASS WITH DEW POINTS RISING
THROUGH THE 50S MONDAY S OF FRONT. THE MAINTENANCE OF AN EML ATOP
THIS MOISTENING BOUNDARY LAYER WILL: 1) ENHANCE CONVECTIVE
INSTABILITY WITH AFTERNOON MLCAPE APPROACHING 1000-2000 J/KG OVER
CNTRL/ERN SD...AND 2) LIKELY CAP WARM SECTOR THROUGH THE DIURNAL
HEATING CYCLE.

DESPITE THE DYNAMIC NATURE OF THE UPPER TROUGH...12Z MODEL GUIDANCE
REMAINS CONSISTENT IN SUGGESTING THAT THE STRONGEST HEIGHT
FALLS/FORCING FOR ASCENT WILL REMAIN TO THE W OF DEVELOPING WARM
SECTOR THROUGH THE DIURNAL HEATING CYCLE. AS SUCH...STORM
INITIATION APPEARS MOST LIKELY MONDAY EVENING N OF SURFACE FRONT
OVER PARTS OF ND AS WAA INCREASES WITHIN EXIT REGION OF DEVELOPING
50+KT NOCTURNAL LLJ. WHILE SOME POTENTIAL WILL EXIST FOR
SURFACE-BASED STORM FORMATION INVOF BOUNDARY OVER NRN SD...THE
MAINTENANCE OF A CAP AROUND 750 MB /PER SREF ETA-KF CONTROL MEMBER
SOUNDINGS/ SUGGESTS THIS WOULD BE A LOW PROBABILITY OF OCCURRENCE.

GIVEN THE PRESENCE OF THE STEEP LAPSE RATES AND RELATIVELY COOL
THERMODYNAMIC PROFILES...THE STRONGEST ELEVATED STORMS FORMING TO
THE N OF SURFACE FRONT WILL BE CAPABLE OF HAIL MONDAY NIGHT INTO
TUESDAY MORNING. DUE TO THE LOW POTENTIAL FOR SURFACE-BASED STORM
DEVELOPMENT IN THE MORE STRONGLY UNSTABLE WARM SECTOR...AND
QUESTIONS REGARDING THE MAGNITUDE OF ELEVATED INSTABILITY TO THE N
OF SURFACE FRONT...FIVE PERCENT SEVERE WEATHER PROBABILITIES WILL BE
MAINTAINED IN THIS UPDATE TO THE INITIAL DAY TWO OUTLOOK.

..MEAD.. 04/11/2010

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 111618
SWODY1
SPC AC 111617

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1117 AM CDT SUN APR 11 2010

VALID 111630Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS PORTIONS OF THE SOUTHERN HIGH
PLAINS...

...THERE IS A SLGT RISK OF SVR TSTMS LOWER RIO GRANDE VALLEY...

...SRN HI PLAINS...
THE STEERING FLOW WILL REMAIN RATHER WEAK ACROSS THE SRN
PLAINS...OTRW CONDITIONS ARE BECOMING INCREASINGLY FAVORABLE FOR
DEVELOPMENT OF STRONG/SEVERE THUNDERSTORMS BEGINNING THIS AFTERNOON.
GULF MOISTURE CONTINUES TO SPREAD N/NNWWD UNDER AN EXTENSIVE EML
WHICH COVERS MUCH OF THE PLAINS.

MORNING CONVECTIVE CLOUDINESS SHOULD GRADUALLY DISSIPATE FROM THE W
ACROSS SWRN TX WHICH WILL ALLOW HEATING AND SURFACE INSTABILITY TO
INCREASE. WITH DEWPOINTS WELL INTO THE 50S BY LATE AFTERNOON AS
TEMPS CLIMB THRU THE 70S...MLCAPES AOA 2000 J/KG WILL DEVELOP ACROSS
THE SRN PANHANDLE SWWD TO THE ERN SLOPES OF THE DAVIS MTNS. WITH
THE STEEP LAPSE RATES AND RELATIVELY COOL MID LEVELS...HAIL WILL BE
COMMON WITH THE STRONGEST UPDRAFTS. WHILE OVERALL SHEAR NOT
SUPPORTIVE OF SUPERCELLS...THE UNSTABLE ENVIRONMENT FAVORS SOME
ROTATION IN STRONGEST STORMS WHICH WILL RAISE THE THREAT FOR BOTH
LARGE HAIL AND LOCALIZED DAMAGING DOWNBURSTS.

INITIATION EXPECTED TO OCCUR VICINITY DISSIPATING FRONTAL ZONE THAT
LIES FROM SRN TX PANHANDLE WWD INTO ERN NM. THE CINH SHOULD WEAKEN
FIRST NEAR THE WRN EDGE OF MOISTURE GRADIENT FROM SERN NM TO DAVIS
MTNS. STORMS WILL MOVE ONLY SLOWLY E/SEWD IN THE WEAK FLOW
ENVIRONMENT POSSIBLY CONTINUING A MARGINAL HAIL/WIND THREAT AFTER
SUNSET INTO W CENTRAL TX PRIOR TO WEAKENING TO BELOW SEVERE.

...LOWER RIO GRANDE VALLEY...
DEEP MOISTURE IS SPREADING UP THE LWR RIO GRANDE VALLEY AS OBSERVED
ON THE 12Z BRO SOUNDING WITH PW/S OF 1.8 INCHES. AGAIN AN EML
OVERLAYS S TX WITH A STOUT CAP NOTED ON THE DRT SOUNDING. HEATING
OF THE HIGHER TERRAIN W OF THE LOWER RIO GRANDE IN MEXICO EXPECTED
TO INITIATE STRONG THUNDERSTORMS DURING THE AFTERNOON. BY THIS
EVENING MODELS INDICATE LOW LEVEL SELY JET INCREASES TO 30-35 KTS
LWR RIO GRANDE VALLEY WHICH SUPPORTS THE STORMS IN MEXICO ORGANIZING
INTO CLUSTERS AND POSSIBLE BOWS AS THEY MOVE SEWD ACROSS THE RIVER
INTO SRN TX. WITH MLCAPES TO 2000 J/KG AND BULK SHEAR INCREASING TO
40-50KT IN CONCERT WITH THE LOW LEVEL JET...APPEARS THERE WILL BE A
THREAT OF DAMAGING WINDS ASSOCIATED WITH THE ACTIVITY MOVING ACROSS
LWR RIO GRANDE TONIGHT INTO S TX ALONG WITH LARGE HAIL. A SLIGHT
RISK HAS BEEN ADDED THIS AREA.

...S FL...
A SLOW MOVING MCS HAS DEVELOPED VICINITY THE SWRN FL COAST THIS AM
IN RESPONSE TO THE PASSAGE OF A MID LEVEL TROUGH FROM THE ERN GULF
AND AN INCREASINGLY UNSTABLE ENVIRONMENT S FL. COOL MID LEVEL
TEMPS...-12C AT 500 MB...SUPPORT HAIL WITH THE STRONGEST CORES AS
WELL AS STRONG WIND GUSTS. ACTIVITY EXPECTED TO REMAIN GENERALLY
BELOW SEVERE LEVELS...AS THE MCS CONTINUES SEWD ACROSS SRN FL TOWARD
THE UPPER KEYS THIS AFTERNOON.

..HALES/JEWELL.. 04/11/2010

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KMFR [111410]: Preliminary Local Storm Report

NWUS56 KMFR 111410
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
710 AM PDT SUN APR 11 2010

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

0710 AM HEAVY RAIN 6 SW MERLIN 42.46N 123.49W
04/11/2010 M0.70 INCH JOSEPHINE OR TRAINED SPOTTER

&&

$$

SUGDEN

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 111236
SWODY1
SPC AC 111234

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0734 AM CDT SUN APR 11 2010

VALID 111300Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE SRN HI
PLNS...

...SYNOPSIS...
STRONG E PACIFIC UPR LOW SHOULD CONTINUE GENERALLY E TO THE NRN CA
CST BY 12Z MON AS DOWNSTREAM RIDGE BUILDS N ACROSS THE PLNS.
FARTHER S...ZONAL SRN STREAM JET EXPECTED TO PERSIST FROM CNTRL/SRN
BAJA CA TO DEEP S TX.

AT LWR LVLS...ELONGATED HIGH PRESSURE WILL PERSIST FROM THE WRN
ATLANTIC AND THE SERN STATES INTO THE SRN PLNS. LEE TROUGH WILL
INTENSIFY OVER THE HI PLNS...S AND W OF STRENGTHENING FRONTAL ZONE
EXTENDING FROM THE DAKOTAS ESE INTO THE MID MS VLY.

...SRN HI PLNS...
S TO SELY LOW-LVL FLOW ASSOCIATED WITH AFOREMENTIONED LEE TROUGH/
SFC RIDGE WILL ALLOW MOISTURE TO GRADUALLY INCREASE OVER S TX AND
THE SRN HI PLNS THROUGH TONIGHT. EXTRAPOLATION OF CURRENT
SATELLITE/GPS DATA SUGGEST THAT PW SHOULD REACH 1 INCH OVER WRN
OK/NW TX BY LATE IN THE DAY...WITH VALUES ABOVE 1.5 INCHES OVER DEEP
S TX. COUPLED WITH RELATIVELY COOL MID-LVL TEMPERATURES/ BROAD
EML...SFC HEATING SHOULD BOOST AFTN SBCAPE TO NEAR 2000 J/KG OVER W
CNTRL TX...WITH SOMEWHAT LESSER VALUES EXTENDING NE INTO OK...AND S
TO THE RIO GRANDE.

CONVERGENCE AND SLIGHT UPSLOPE COMPONENT TO LOW-LVL FLOW SHOULD
SUPPORT SCTD STORM DEVELOPMENT BY MID TO LATE AFTN ALONG LEE
TROUGH/DRY LINE FROM W TX INTO WRN OK. THE MEAN FLOW WILL BE
WEAK...AS WILL LARGE SCALE FORCING FOR ASCENT. BUT GIVEN DEGREE OF
SFC-BASED INSTABILITY AND FOCI FOR LOW-LVL ASCENT...SOME STRONG
PULSE UPDRAFTS APPEAR LIKELY. THESE MAY YIELD SVR HAIL AND PERHAPS
AN ISOLD SVR WIND GUST OR TWO BEFORE THE STORMS MERGE INTO ONE OR
MORE SMALL SSE-MOVING CLUSTERS THIS EVE.

...S TX...
MODERATE /30-40 KT/ DEEP WLY SHEAR WILL EXIST OVER THE RIO GRANDE
VLY REGION THOUGH THE PERIOD...BENEATH NRN FRINGE OF SRN STREAM JET.
WV IMAGERY SUGGESTS THE POSSIBLE PRESENCE OF SEVERAL UPSTREAM
DISTURBANCES THAT COULD ENHANCE LARGE SCALE FORCING FOR ASCENT. BUT
CONFIDENCE IS NOT GREAT REGARDING THE STRENGTH/TIMING OF THESE
FEATURES. NEVERTHELESS...GIVEN AVAILABILITY OF COMPARATIVELY RICH
MOISTURE OVER THE REGION...AND MORE SUBSTANTIAL UPSLOPE FLOW
RELATIVE TO POINTS FARTHER N...IT SEEMS LIKELY THAT A FEW SUPERCELLS
WILL FORM THIS AFTN OVER THE MOUNTAINS OF NE MEXICO. THESE SHOULD
MOVE MAINLY SE AND REMAIN PRIMARILY SW OF THE INTERNATIONAL BORDER.
BUT A LOW PROBABILISTIC THREAT WILL EXIST FOR SOME STORMS TO CROSS
THE LWR RIO GRANDE AND AFFECT PARTS OF S TX LATE THIS AFTN INTO
TONIGHT...WITH THE MAIN THREAT BEING LARGE HAIL.

...NRN/CNTRL CA...
WIND PROFILES WILL BECOME INCREASINGLY FAVORABLE FOR SUSTAINED
STORMS/SUPERCELLS OVER NRN PARTS OF THE CNTRL VLY AND ALONG THE
NRN/CNTRL CA CST LATE TODAY/TONIGHT AS SHORTWAVE IMPULSE ROUNDS BASE
OF OFFSHORE LOW...AND SWEEPS INLAND WITH A SLIGHTLY NEGATIVE TILT.
ATTM...TIMING BASED ON CURRENT CONDITIONS/SATELLITE DATA SUGGESTS
THAT CLOUDS/RAIN ASSOCIATED WITH SYSTEM WARM CONVEYOR BELT WILL
LIMIT LOW LVL DESTABILIZATION/POTENTIAL FOR STORMS. SHOULD IT
APPEAR THAT GREATER BOUNDARY LAYER DESTABILIZATION WILL OCCUR THAN
IS NOW EXPECTED...LOW TORNADO PROBABILITIES MAY BE REQUIRED IN LATER
OUTLOOKS.

..CORFIDI/GRAMS/JIRAK.. 04/11/2010

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 110833
SWOD48
SPC AC 110832

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0332 AM CDT SUN APR 11 2010

VALID 141200Z - 191200Z

...DISCUSSION...

LARGE SCALE CONDITIONS WILL REMAIN FAVORABLE FOR PERSISTENT SFC
RIDGING ACROSS THE GULF STATES THROUGH THE END OF THE WEEK. THIS
AIRMASS WILL BE SLOW TO MODIFY AND ULTIMATELY JUST SUPPRESS NWD
TRANSPORT OF MORE FAVORABLE MARITIME CONDITIONS INLAND WHERE
INSTABILITY COULD ULTIMATELY BE OVERTURNED WITHIN A PREDOMINATELY
WEAKLY SHEARED ENVIRONMENT. LARGE SCALE CONDITIONS DO NOT LOOK
FAVORABLE FOR ORGANIZED SEVERE THUNDERSTORMS.

..DARROW.. 04/11/2010

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 110709
SWODY3
SPC AC 110708

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0208 AM CDT SUN APR 11 2010

VALID 131200Z - 141200Z

...HIGH PLAINS...

MODELS ARE IN GENERAL AGREEMENT REGARDING THE EVOLUTION OF EJECTING
LEAD SPEED MAX DURING THE DAY3 PERIOD. WHILE THERE ARE SOME MODEL
DIFFERENCES REGARDING SOME LARGE SCALE TIMING/DISPLACEMENT
ISSUES...OVERALL IDEA OF STRONG CYCLOGENESIS IN THE LEE OF THE NRN
ROCKIES IS CONSISTENT. MID LEVEL FLOW WILL INCREASE MARKEDLY ACROSS
THE NRN/CNTRL HIGH PLAINS REGION AS LEAD TROUGH EJECTS IN A NEGATIVE
TILTED FASHION INTO THE WRN DAKOTAS LATE. RESULTANT LARGE SCALE
FORCING WILL BE MAXIMIZED ACROSS THE HIGH PLAINS WHERE MERIDIONAL
DEEP LAYER FLOW WILL BE QUITE STRONG...BUT THERMODYNAMICALLY NOT
PARTICULARLY UNSTABLE. GIVEN THE QUASI-PERSISTENT ANTICYCLONIC FLOW
REGIME OVER THE GULF STATES BOUNDARY LAYER MOISTURE RETURN WILL BE
QUITE LIMITED AND NARROW IMMEDIATELY AHEAD OF LEE TROUGH/FRONTAL
SURGE. EVEN SO...DEW POINTS IN THE 40S/50S ACROSS THE HIGHER PLAINS
SHOULD YIELD SUFFICIENT INSTABILITY FOR ROBUST CONVECTION FROM NERN
NM/ERN CO...NWD INTO THE WRN DAKOTAS. GIVEN THE MEAGER
MOISTURE/INSTABILITY WILL ONLY INTRODUCE 5% PROBS ACROSS THIS
REGION...ALTHOUGH DEEP LAYER SHEAR WOULD OTHERWISE SUPPORT FAST
NNEWD-MOVING SUPERCELL STRUCTURES OR LINE SEGMENTS CAPABLE OF
GENERATING STRONG WINDS.

..DARROW.. 04/11/2010

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 110523
SWODY2
SPC AC 110522

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1222 AM CDT SUN APR 11 2010

VALID 121200Z - 131200Z

...NO SVR TSTM AREAS FORECAST...

...NRN PLAINS...

GFS CONTINUES EARLIER TRENDS OF BEING MORE AGGRESSIVE THAN THE NAM
WITH EJECTING SPEED MAX/SHORTWAVE TROUGH ACROSS THE CNTRL ROCKIES
LATE IN THE PERIOD. EVEN A SLOWER NAM SOLUTION RESULTS IN A
SUBSTANTIAL NWD SHIFT TO A MODIFYING WARM SECTOR AS SFC WARM FRONT
RETREATS TO NEAR THE ND/SD BORDER BY THE END OF THE PERIOD. MODELS
ARE IN GENERAL AGREEMENT THAT WARM ADVECTION WILL BE THE PRIMARY
FORCING MECHANISM FOR CONVECTIVE DEVELOPMENT THROUGH THE PERIOD AS
HEIGHT FALLS DON'T REALLY APPROACH THE NRN HIGH PLAINS UNTIL AFTER
MIDNIGHT. WITH 50S DEW POINTS EXPECTED TO SPREAD ACROSS THE CNTRL
PLAINS AND OVERSPREAD THE FRONTAL BOUNDARY EPISODIC ELEVATED
CONVECTION WILL LIKELY DEVELOP ACROSS MUCH OF THE DAKOTAS. FORECAST
SOUNDINGS SUGGEST THUNDERSTORM ACTIVITY MAY BECOME QUITE ROBUST AS
MODEST VEERING PROFILES WITH HEIGHT WOULD SEEM TO FAVOR ROTATING
UPDRAFTS. GIVEN THE RECOVERING AIRMASS AND BROAD RIDGING THAT
STUBBORNLY SHIFTS EAST LATE IN THE PERIOD...WILL MAINTAIN 5%
PROBABILITIES FOR WARM FRONTAL CONVECTION...MUCH OF WHICH SHOULD BE
JUST NORTH OF THE BOUNDARY. GIVEN THE LIKELY ELEVATED NATURE HAIL
SHOULD BE THE PRIMARY THREAT. EVEN SO SHEAR PROFILES COULD SUPPORT
SUPERCELL-LIKE STRUCTURES IF UPDRAFTS CAN ROOT NEAR THE WIND SHIFT.
THE GREATEST CHANCE FOR NEAR-WARM SECTOR DEVELOPMENT WILL BE ACROSS
SWRN SD WHERE STRONG DIURNAL HEATING...ALONG WITH BLACK HILLS
TOPOGRAPHY COULD VERY WELL INITIATE SFC BASED ACTIVITY. THIS REGION
MAY NEED TO BE UPGRADED IN LATER OUTLOOKS.

...SRN HIGH PLAINS...

FARTHER SOUTH ACROSS THE HIGH PLAINS OF NM AND FAR WEST TX...STRONG
HEATING WILL CONTRIBUTE TO DESTABILIZATION WITHIN WEAK UPSLOPE
REGIME AHEAD OF UPPER TROUGH. STRONGER MID LEVEL FLOW WILL NOT
OVERSPREAD THIS REGION DURING THE DIURNAL CYCLE HENCE WEAK VEERING
PROFILES WILL EXIST DURING THE COURSE OF GREATEST INSTABILITY.
FORECAST SOUNDINGS DO FAVOR THE POSSIBILITY FOR WEAK/SLOW MOVING
SUPERCELL STRUCTURES WHICH COULD PRODUCE HAIL DURING THE MATURE
PHASES OF STRONGER UPDRAFTS.

..DARROW.. 04/11/2010

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 110450
SWODY1
SPC AC 110448

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1148 PM CDT SAT APR 10 2010

VALID 111200Z - 121200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
THE UPPER FLOW FIELD ACROSS THE U.S. IS PROGGED TO AMPLIFY THIS
PERIOD...AS A LARGE LOW/TROUGH OVER THE ERN PACIFIC MOVES INTO THE W
COAST STATES. AS THIS OCCURS...A DOWNSTREAM RIDGE WILL BUILD ACROSS
THE CENTRAL U.S. WHILE INCREASINGLY-CYCLONIC FLOW EXPANDS ACROSS THE
EAST.

AT THE SURFACE...HIGH PRESSURE WILL PREVAIL ACROSS THE EAST...WITH A
LARGE/BROAD AREA OF LOW PRESSURE OVER THE WEST. IN BETWEEN...SLYS
AT LOW LEVELS WILL EXPAND ACROSS MUCH OF THE CENTRAL CONUS.

...KS/WRN OK/WRN AND CENTRAL TX...
WHILE LOW-LEVEL SLYS WILL ALLOW NWD ADVECTION OF MODEST
BOUNDARY-LAYER MOISTURE...WEAK RIDGING ALOFT COMBINED WITH SOME EWD
ADVECTION OF AN ELEVATED MIXED LAYER INTO THE CENTRAL AND SRN PLAINS
WILL ALLOW CAPPING TO PERSIST INTO THE AFTERNOON. ATTM...IT APPEARS
THAT WITH ONLY WEAK LARGE-SCALE ASCENT...CAPPING WILL HINDER STORM
INITIATION...WITH DEVELOPMENT LIKELY TO REMAIN ISOLATED AT BEST IN
MOST PORTIONS OF THIS AREA.

WHERE STORMS DO DEVELOP...RELATIVELY WEAK DEEP-LAYER WIND FIELD
SUGGESTS PRIMARILY MULTICELLULAR STORM MODE. HOWEVER...GIVEN STEEP
MID-LEVEL LAPSE RATES...LARGE HAIL WILL BE POSSIBLE. IN
ADDITION...A DRIER BOUNDARY LAYER OVER THE HIGH PLAINS MAY SUPPORT
EVAPORATIVELY ENHANCED DOWNDRAFTS.

WHILE MODELS SEEM TO BE HINTING THAT SOMEWHAT MORE WIDESPREAD
DEVELOPMENT MAY OCCUR OVER THE HIGH PLAINS OF TX...WILL REFRAIN FROM
INTRODUCING SLIGHT RISK/15% ATTM. HOWEVER...UPGRADE MAY BECOME
NECESSARY IN LATER OUTLOOKS IF CONFIDENCE THAT A CLUSTER OF STORMS
WILL EVOLVE ACROSS THIS AREA INCREASES.

..GOSS/STOPPKOTTE.. 04/11/2010

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