KDLH [180210]: Preliminary Local Storm Report...summary

NWUS53 KDLH 180210
LSRDLH

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DULUTH MN
909 PM CDT SAT MAY 17 2008

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

0112 PM TSTM WND DMG 9 E PALISADE 46.71N 93.30W
05/17/2008 AITKIN MN LAW ENFORCEMENT

POWER LINES DOWN AROUND BIG SANDY LAKE...TIME ESTIMATED

0144 PM TSTM WND GST LITTLEFORK 48.40N 93.56W
05/17/2008 E60.00 MPH KOOCHICHING MN CO-OP OBSERVER

SHINGLES BLOWN OFF ROOF...WIND MEASURED USING HOME
WEATHER STATION

0300 PM TSTM WND DMG 5 SE GRAND RAPIDS 47.18N 93.45W
05/17/2008 ITASCA MN TRAINED SPOTTER

12 INCH DIAMETER SPRUCE SNAPPED BY THUNDERSTORM WINDS. 6
INCH DIAMETER MAPLE SNAPPED BY THUNDERSTORM WINDS.

0305 PM TSTM WND DMG WIRT 47.73N 93.96W
05/17/2008 ITASCA MN TRAINED SPOTTER

WIND ESTIMATED AT 50 MPH.

0400 PM NON-TSTM WND DMG 7 E FIFIELD 45.88N 90.28W
05/17/2008 PRICE WI TRAINED SPOTTER

SEVERAL 6-8 INCH DIAMETER TREES DOWN.

0441 PM TSTM WND DMG ASHLAND 46.58N 90.87W
05/17/2008 ASHLAND WI TRAINED SPOTTER

3 INCH DIA BRANCHES BLOWN OF TREES.

0455 PM NON-TSTM WND DMG WALKER 47.09N 94.58W
05/17/2008 NORTHERN CASS MN TRAINED SPOTTER

ON LEECH LAKE...BLEW A BOAT LIFT UP INTO A TREE.

0500 PM TSTM WND DMG HINCKLEY 46.01N 92.94W
05/17/2008 PINE MN TRAINED SPOTTER

8 INCH DIAMETER TREE TOP SNAPPED

0530 PM TSTM WND DMG 2 N HILL CITY 47.01N 93.60W
05/17/2008 AITKIN MN TRAINED SPOTTER

2 FOOT SPRUCE KNOCKED DOWN.

&&

$$

MELDE

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KCLE [172309]: Preliminary Local Storm Report

NWUS51 KCLE 172309
LSRCLE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CLEVELAND OH
709 PM EDT SAT MAY 17 2008

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

0410 PM HAIL WATERFORD 41.95N 79.99W
05/17/2008 E0.88 INCH ERIE PA PUBLIC

0505 PM HAIL 8 S LINESVILLE 41.54N 80.42W
05/17/2008 E0.75 INCH CRAWFORD PA PUBLIC

HAIL LASTED 10 MINUTES

&&

$$

MULLEN

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KDLH [172259]: Preliminary Local Storm Report

NWUS53 KDLH 172259
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
559 PM CDT SAT MAY 17 2008

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

0530 PM TSTM WND DMG 2 N HILL CITY 47.01N 93.60W
05/17/2008 AITKIN MN TRAINED SPOTTER

2 FOOT SPRUCE KNOCKED DOWN.

&&

$$

MELDE

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KMPX [172254]: Preliminary Local Storm Report

NWUS53 KMPX 172254
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
554 PM CDT SAT MAY 17 2008

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

0545 PM HAIL 5 S EAU CLAIRE 44.75N 91.49W
05/17/2008 M1.00 INCH EAU CLAIRE WI TRAINED SPOTTER

SPOTTER C1 INTERSECTION OF LOWES CREEK ROAD AND COUNTY
ROAD HH

0545 PM HAIL 5 S EAU CLAIRE 44.75N 91.49W
05/17/2008 M1.00 INCH EAU CLAIRE WI TRAINED SPOTTER

INTERSECTION OF LOWES CREEK ROAD AND COUNTY ROAD HH

&&

$$

BAP

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KDTX [172253]: Preliminary Local Storm Report

NWUS53 KDTX 172253
LSRDTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
652 PM EDT SAT MAY 17 2008

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

0647 PM NON-TSTM WND DMG 5 NE CORUNNA 43.04N 84.05W
05/17/2008 SHIAWASSEE MI TRAINED SPOTTER

SLIDING AND SHUTTERS BLOWN OFF HOUSE

&&
ESIMATED WIND 60 MPH.
$$

BNASH

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KDLH [172250]: Preliminary Local Storm Report

NWUS53 KDLH 172250
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
549 PM CDT SAT MAY 17 2008

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

0500 PM TSTM WND DMG HINCKLEY 46.01N 92.94W
05/17/2008 PINE MN TRAINED SPOTTER

8 INCH DIAMETER TREE TOP SNAPPED

&&

$$

TLONKA

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KGRR [172249]: Preliminary Local Storm Report

NWUS53 KGRR 172249
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
649 PM EDT SAT MAY 17 2008

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

0608 PM TSTM WND DMG 5 NE DE WITT 42.89N 84.51W
05/17/2008 CLINTON MI TRAINED SPOTTER

A 2 FOOT DIAMETER HEALTHY TREE KNOCKED DOWN

&&

$$

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KGRR [172230]: Preliminary Local Storm Report

NWUS53 KGRR 172230
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
630 PM EDT SAT MAY 17 2008

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

0603 PM TSTM WND DMG 4 S ST. JOHNS 42.94N 84.56W
05/17/2008 CLINTON MI TRAINED SPOTTER

1 LARGE TREE DOWN ACROSS ROAD

&&

$$

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KGRR [172225]: Preliminary Local Storm Report

NWUS53 KGRR 172225
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
625 PM EDT SAT MAY 17 2008

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

0541 PM TSTM WND DMG HUBBARDSTON 43.10N 84.87W
05/17/2008 IONIA MI LAW ENFORCEMENT

SEVERAL TREES DOWN

&&

$$

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KGRR [172225]: Preliminary Local Storm Report

NWUS53 KGRR 172225
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
625 PM EDT SAT MAY 17 2008

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

0617 PM TSTM WND GST 5 N LANSING 42.78N 84.55W
05/17/2008 M48 MPH CLINTON MI ASOS

CAPITAL CITY AIRPORT

&&

$$

WFELVER

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KGRR [172223]: Preliminary Local Storm Report

NWUS53 KGRR 172223
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
623 PM EDT SAT MAY 17 2008

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

0559 PM TSTM WND DMG PORTLAND 42.87N 84.90W
05/17/2008 IONIA MI LAW ENFORCEMENT

SEVERAL TREES DOWN

&&

$$

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KGRR [172219]: Preliminary Local Storm Report...corrected

NWUS53 KGRR 172219
LSRGRR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
618 PM EDT SAT MAY 17 2008

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

0539 PM TSTM WND DMG 1 N SHEPHERD 43.54N 84.69W
05/17/2008 ISABELLA MI BROADCAST MEDIA

US-27 CLOSED DUE TO POWER LINE ACROSS HIGHWAY AT US-27
AND WALTON RD.

&&

$$

WFELVER

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KGRR [172213]: Preliminary Local Storm Report

NWUS53 KGRR 172213
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
612 PM EDT SAT MAY 17 2008

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

0611 PM TSTM WND DMG 1 N SHEPHERD 43.54N 84.69W
05/17/2008 ISABELLA MI BROADCAST MEDIA

US-27 CLOSED DUE TO POWER LINE ACROSS HIGHWAY AT US-27
AND WALTON RD.

&&

$$

WFELVER

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KGRR [172213]: Preliminary Local Storm Report

NWUS53 KGRR 172213
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
613 PM EDT SAT MAY 17 2008

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

0604 PM TSTM WND GST 2 NE RILEY 42.94N 84.64W
05/17/2008 E45 MPH CLINTON MI TRAINED SPOTTER

&&

$$

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KDLH [172205]: Preliminary Local Storm Report

NWUS53 KDLH 172205
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
505 PM CDT SAT MAY 17 2008

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

0455 PM NON-TSTM WND DMG WALKER 47.09N 94.58W
05/17/2008 NORTHERN CASS MN TRAINED SPOTTER

ON LEECH LAKE...BLEW A BOAT LIFT UP INTO A TREE.

&&

$$

MELDE

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KGRR [172204]: Preliminary Local Storm Report

NWUS53 KGRR 172204
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
603 PM EDT SAT MAY 17 2008

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

0546 PM TSTM WND GST BRECKENRIDGE 43.41N 84.48W
05/17/2008 M55 MPH GRATIOT MI MESONET

&&

$$

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KGRR [172159]: Preliminary Local Storm Report

NWUS53 KGRR 172159
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
559 PM EDT SAT MAY 17 2008

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

0527 PM TSTM WND DMG SUMNER 43.31N 84.82W
05/17/2008 GRATIOT MI LAW ENFORCEMENT

1 TREE KNOCKED DOWN

&&

$$

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KDLH [172157]: Preliminary Local Storm Report...corrected

NWUS53 KDLH 172157
LSRDLH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DULUTH MN
457 PM CDT SAT MAY 17 2008

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

0305 PM TSTM WND DMG WIRT 47.73N 93.96W
05/17/2008 ITASCA MN TRAINED SPOTTER

WIND ESTIMATED AT 50 MPH.

&&

$$

MELDE

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KDLH [172156]: Preliminary Local Storm Report

NWUS53 KDLH 172156
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
456 PM CDT SAT MAY 17 2008

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

0400 PM NON-TSTM WND DMG 7 E FIFIELD 45.88N 90.28W
05/17/2008 PRICE WI TRAINED SPOTTER

SEVERAL 6-8 INCH DIAMETER TREES DOWN.

&&

$$

MELDE

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KDLH [172154]: Preliminary Local Storm Report

NWUS53 KDLH 172154
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
454 PM CDT SAT MAY 17 2008

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

0305 PM TSTM WND DMG WIRT 47.73N 93.96W
05/17/2008 NORTHWEST ITASCA MN TRAINED SPOTTER

SEVERAL 6-8 INCH TREES BLOWN DOWN. WIND ESTIMATED AT 50
MPH.

&&

$$

MELDE

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KMQT [172148]: Preliminary Local Storm Report

NWUS53 KMQT 172148
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
547 PM EDT SAT MAY 17 2008

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

0503 PM TSTM WND GST 5 SSW CALUMET 47.18N 88.50W
05/17/2008 M54 MPH HOUGHTON MI ASOS

&&

$$

SRF

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KGRR [172145]: Preliminary Local Storm Report

NWUS53 KGRR 172145
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
545 PM EDT SAT MAY 17 2008

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

0514 PM TSTM WND DMG MCBRIDE 43.35N 85.04W
05/17/2008 MONTCALM MI LAW ENFORCEMENT

SEVERAL TREES DOWN

&&

$$

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KDLH [172142]: Preliminary Local Storm Report

NWUS53 KDLH 172142
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
442 PM CDT SAT MAY 17 2008

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

0441 PM TSTM WND DMG ASHLAND 46.58N 90.87W
05/17/2008 ASHLAND WI TRAINED SPOTTER

3 INCH DIA BRANCHES BLOWN OF TREES.

&&

$$

SWANNEBO

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KGRR [172136]: Preliminary Local Storm Report

NWUS53 KGRR 172136
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
536 PM EDT SAT MAY 17 2008

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

0456 PM TSTM WND DMG HOWARD CITY 43.40N 85.47W
05/17/2008 MONTCALM MI LAW ENFORCEMENT

SEVERAL TREES DOWN

&&

$$

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KGRR [172110]: Preliminary Local Storm Report...corrected

NWUS53 KGRR 172110
LSRGRR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
510 PM EDT SAT MAY 17 2008

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

0450 PM TSTM WND DMG ROSEBUSH 43.70N 84.77W
05/17/2008 ISABELLA MI LAW ENFORCEMENT

POWER POLES SNAPPED

&&

$$

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KGRR [172106]: Preliminary Local Storm Report

NWUS53 KGRR 172106
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
506 PM EDT SAT MAY 17 2008

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

0429 PM TSTM WND DMG ROSEBUSH 43.70N 84.77W
05/17/2008 ISABELLA MI LAW ENFORCEMENT

POWER POLES SNAPPED

&&

$$

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KDLH [172054]: Preliminary Local Storm Report

NWUS53 KDLH 172054
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
354 PM CDT SAT MAY 17 2008

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

0300 PM TSTM WND DMG 5 SE GRAND RAPIDS 47.18N 93.45W
05/17/2008 ITASCA MN TRAINED SPOTTER

12 INCH DIAMETER SPRUCE SNAPPED BY THUNDERSTORM WINDS. 6
INCH DIAMETER MAPLE SNAPPED BY THUNDERSTORM WINDS.

&&

$$

RBERDES

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KGRR [172052]: Preliminary Local Storm Report

NWUS53 KGRR 172052
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
452 PM EDT SAT MAY 17 2008

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

0429 PM TSTM WND DMG WHITE CLOUD 43.55N 85.77W
05/17/2008 NEWAYGO MI LAW ENFORCEMENT

SEVERAL TREES KNOCKED DOWN

&&

$$

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KGRR [172023]: Preliminary Local Storm Report

NWUS53 KGRR 172023
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
422 PM EDT SAT MAY 17 2008

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

0402 PM TSTM WND DMG 7 SW BALDWIN 43.83N 85.95W
05/17/2008 LAKE MI EMERGENCY MNGR

SEVERAL TREES KNOCKED DOWN NEAR BIG STAR LAKE.

&&

$$

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 172001
SWODY1
SPC AC 171958

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0258 PM CDT SAT MAY 17 2008

VALID 172000Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...GREAT LAKES REGION/UPPER OH VALLEY...
MID LEVEL IMPULSES AND ACCOMPANYING SURFACE FRONTS...CURRENTLY
TRACKING ESEWD THROUGH THE LOWER GREAT LAKES REGION TO NRN MN...WILL
CONTINUE TO BE THE FOCI FOR ADDITIONAL TSTM DEVELOPMENT INTO THE
EARLY EVENING AS THESE FEATURES REMAIN PROGRESSIVE. INSTABILITY IS
QUITE MEAGER DUE TO SURFACE DEWPOINTS GENERALLY IN THE 30S AND 40S.
HOWEVER...COLD MID LEVEL TEMPERATURES /H5 VALUES OF -22 TO -28C/
ATOP SURFACE HEATING WILL CONTINUE TO SUPPORT STEEP LAPSE RATES.
THIS COMBINED WITH STRONG DEEP LAYER SHEAR WILL RESULT IN ADDITIONAL
ISOLATED STRONG TO SEVERE STORMS PRODUCING HAIL AND STRONG WIND
GUSTS. THIS OUTLOOK WILL MAINTAIN LOW SEVERE PROBABILITIES SINCE
THE WEAK INSTABILITY SHOULD LIMIT THE OVERALL SEVERE WEATHER THREAT
AND COVERAGE OF SEVERE REPORTS.

...SERN NM AND ADJACENT PARTS OF W TX...
WATER VAPOR IMAGERY INDICATED A COMPACT CIRCULATION CENTER LOCATED
OVER WEST CENTRAL TX MOVING SWWD. MODELS SUGGEST THIS TREND WILL
CONTINUE THROUGH THE AFTERNOON AND THEN BECOME MORE SWD AND SEWD
TONIGHT AS HEIGHTS BEGIN TO RISE OVER THE SRN ROCKIES. ASCENT
ATTENDANT TO MID LEVEL IMPULSES ROTATING AROUND THE WRN AND ERN
PERIPHERIES OF THIS UPPER FEATURE COMBINED WITH WEAK INSTABILITY
WILL SUPPORT ADDITIONAL TSTM DEVELOPMENT THROUGH THE AFTERNOON INTO
THE EARLY EVENING. WIND PROFILERS AND WSR-88D VWP DATA INDICATED
STRONGER N-NELY MID LEVEL WINDS EXTENDING FROM ERN INTO SRN NM.
THIS WILL CONTINUE TO ENHANCE DEEP LAYER SHEAR TO SUPPORT SOME STORM
ORGANIZATION. ALTHOUGH INSTABILITY IS WEAK /MUCAPE AOB 500
J/KG/...COLD MID LEVEL TEMPERATURES /H5 AROUND -16 C/ AND SURFACE
HEATING HAVE RESULTED IN STEEP LAPSE RATES. THIS SHOULD SUPPORT A
THREAT FOR SMALL HAIL. GREATEST SEVERE WEATHER THREAT...THOUGH
STILL ISOLATED...IS EXPECTED TO BE FOR STRONGER WIND GUSTS...GIVEN
INCREASING SURFACE DEWPOINT DEPRESSIONS/INVERTED-V BOUNDARY LAYER
THERMODYNAMIC PROFILE AS SURFACE TEMPERATURES CONTINUE TO RISE.
THIS OUTLOOK HAS ADDED LOW SEVERE WIND PROBABILITIES TO ACCOUNT FOR
AN ISOLATED STRONG WIND GUST. TSTM ACTIVITY IS EXPECTED TO DIMINISH
THIS EVENING WITH THE ONSET OF BOUNDARY LAYER COOLING/STABILIZATION.

..PETERS.. 05/17/2008

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KDLH [171926]: Preliminary Local Storm Report...corrected

NWUS53 KDLH 171926
LSRDLH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DULUTH MN
226 PM CDT SAT MAY 17 2008

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

0112 PM TSTM WND DMG 9 E PALISADE 46.71N 93.30W
05/17/2008 AITKIN MN LAW ENFORCEMENT

POWER LINES DOWN AROUND BIG SANDY LAKE...TIME ESTIMATED

0144 PM TSTM WND GST LITTLEFORK 48.40N 93.56W
05/17/2008 E60.00 MPH KOOCHICHING MN CO-OP OBSERVER

SHINGLES BLOWN OFF ROOF...WIND MEASURED USING HOME
WEATHER STATION

&&

$$

TLONKA

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KDLH [171918]: Preliminary Local Storm Report

NWUS53 KDLH 171918
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
218 PM CDT SAT MAY 17 2008

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

0112 PM TSTM WND DMG 9 E PALISADE 46.71N 93.30W
05/17/2008 AITKIN MN LAW ENFORCEMENT

POWER LINES DOWN AROUND BIG SANDY LAKE...TIME ESTIMATED

0144 PM TSTM WND GST LITTLEFORK 48.40N 93.56W
05/17/2008 E60.00 MPH KOOCHICHING MN CO-OP OBSERVER

SHINGLES BLOWN OFF ROOF

&&

$$

TLONKA

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KMQT [171831]: Preliminary Local Storm Report

NWUS53 KMQT 171831
LSRMQT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
231 PM EDT SAT MAY 17 2008

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

1240 PM HAIL MENOMINEE 45.12N 87.62W
05/17/2008 E0.50 INCH MENOMINEE MI TRAINED SPOTTER

0150 PM HAIL GARDEN CORNERS 45.89N 86.54W
05/17/2008 E0.50 INCH DELTA MI TRAINED SPOTTER

0200 PM HAIL GULLIVER 45.98N 86.02W
05/17/2008 E1.00 INCH SCHOOLCRAFT MI TRAINED SPOTTER

&&

$$

TGREEN

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MESO: Mesoscale Discussion 0947

ACUS11 KWNS 171829
SWOMCD
SPC MCD 171828
MIZ000-WIZ000-MNZ000-172000-

MESOSCALE DISCUSSION 0947
NWS STORM PREDICTION CENTER NORMAN OK
0128 PM CDT SAT MAY 17 2008

AREAS AFFECTED...NRN LOWER MI...NRN WI

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 171828Z - 172000Z

A MARGINAL SEVERE THREAT WILL CONTINUE TO DEVELOP OVER THE NEXT 1 TO
3 HOURS ACROSS NRN WI AND NRN LOWER MI. THE STRONGER CELLS WILL HAVE
A POTENTIAL FOR HAIL AND STRONG GUSTY WINDS. A WW IS NOT ANTICIPATED
ATTM.

WATER VAPOR IMAGERY AND RUC ANALYSIS SHOW AN UPPER-LEVEL LOW OVER
CNTRL ONTARIO WITH A 70 TO 80 KT MID-LEVEL JET LOCATED IN NORTHWEST
FLOW OVER THE UPPER-MS VALLEY. SEVERAL VORTICITY MAXIMA ASSOCIATED
WITH THE MID-LEVEL JET WILL MOVE ACROSS THE MCD AREA PROVIDING LIFT
COMBINED WITH SFC HEATING FOR SCATTERED THUNDERSTORM DEVELOPMENT
THIS AFTERNOON. ALTHOUGH INSTABILITY WILL REMAIN WEAK...STRONG
VERTICAL SHEAR EVIDENT ASSOCIATED WITH THE JET MAX AND STEEP LAPSE
RATES EVIDENT ON FORECAST SOUNDINGS SUGGEST A THREAT FOR HAIL WILL
EXIST WITH THE STRONGER CELLS. THE DRY BOUNDARY LAYER AND HIGH SFC
TEMP-DEWPOINT SPREADS MAY ALSO RESULT IN GUSTY WINDS WITH A FEW OF
THE STORMS.

..BROYLES.. 05/17/2008

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

ATTN...WFO...APX...GRR...MQT...GRB...DLH...ARX...MPX...

45608405 44598409 43878695 44218960 45259226 46159283
46549249 46739165 46259008 45628823 45528678 45908537

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 171734
SWODY2
SPC AC 171732

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1232 PM CDT SAT MAY 17 2008

VALID 181200Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
COLD UPPER LOW...CURRENTLY LOCATED OVER NRN ONTARIO...WILL CONTINUE
A SEWD MOVEMENT TODAY THROUGH SUNDAY...AND SHOULD REACH THE LOWER
GREAT LAKES/NERN STATES BY 12Z MONDAY. SEVERAL JET AND ATTENDANT
VORTICITY MAXIMA WILL ROTATE THROUGH THE ERN U.S. UPPER TROUGH.
MEANWHILE...THE WRN U.S. RIDGE WILL REMAIN ANCHORED ALONG AND JUST W
OF THE CA COAST ON SUNDAY...WITH HEIGHT FALLS PERSISTING ACROSS ORE
TO WRN CANADA AS ONE PACIFIC TROUGH TOPS THE RIDGE EARLY SUNDAY AND
A STRONGER TROUGH APPROACHES BC LATE IN THE FORECAST PERIOD.
DOWNSTREAM HEIGHT RISES OVER THE SRN ROCKIES/HIGH PLAINS WILL
SUPPORT AN EWD PROGRESSION OF THE SRN HIGH PLAINS TROUGH DURING THE
DAY 1 PERIOD REACHING E TX/LOWER MS VALLEY BY 12Z SUNDAY. THIS
SYSTEM WILL WEAKEN SUNDAY AS IT MOVES THROUGH CONFLUENT FLOW REGIME
WITHIN BASE OF DEVELOPING ERN U.S. LONGWAVE TROUGH.

AT THE SURFACE...A TROUGH IN LEE OF THE ROCKIES SHOULD SHIFT EWD
INTO THE PLAINS/CANADIAN PRAIRIE SUNDAY NIGHT. MEANWHILE...A
WEAK/REINFORCING COLD FRONT IS EXPECTED TO CROSS THE APPALACHIANS BY
AFTERNOON...AND THEN CONTINUE EWD/OFF THE ATLANTIC COAST THROUGH THE
END OF THE PERIOD. WRN EXTENT OF THIS BOUNDARY WILL MOVE SWD
THROUGH THE TN VALLEY AND REACH SRN PARTS OF GA TO MS BY 12Z MONDAY.

...MID-ATLANTIC REGION WSWWD INTO NRN GA/PARTS OF NRN AL/MS...
MODELS CONTINUE TO INDICATE MINIMAL DESTABILIZATION ACROSS THE
MID-ATLANTIC REGION AND WSWWD ACROSS THE CAROLINAS INTO NRN GA.
SLIGHTLY STRONGER INSTABILITY IS POSSIBLE FARTHER W ALONG THE COLD
FRONT INTO PARTS OF NRN AL/MS WHERE MLCAPE SHOULD APPROACH 500 J/KG
GIVEN GREATER SURFACE MOISTURE THAN EXPECTED FARTHER E. FORCING FOR
ASCENT ATTENDANT TO PROGRESSIVE OH VALLEY SHORT WAVE TROUGH SHOULD
BE STRONGEST FROM PA SWD TO THE CAROLINAS... SUPPORTING SHOWERS AND
TSTMS ALONG THE FAST MOVING COLD FRONT. WEAK INSTABILITY SHOULD
LIMIT THE THREAT FOR SEVERE. HOWEVER...STRONG/GENERALLY
UNIDIRECTIONAL DEEP-LAYER WIND FIELD SUGGESTS A THREAT FOR
LOCALLY-DAMAGING WINDS DURING THE AFTERNOON...WITH ANY STRONGER LINE
SEGMENTS.

FARTHER W INTO NRN AL/MS...MODELS SUGGEST A WEAK IMPULSE WILL TRACK
SEWD INTO THE LOWER TN VALLEY REGION SUNDAY AFTERNOON SUPPORTING
CONVECTIVE DEVELOPMENT ALONG WRN EXTENT OF THE FRONT.
ALTHOUGH DEEP LAYER SHEAR IS EXPECTED TO BE WEAKER ACROSS THE LOWER
TN VALLEY THAN LOCATIONS FARTHER E...STRONGER INSTABILITY MAY OFFSET
THIS LIMITING FACTOR AND SUPPORT A FEW STRONG TO SEVERE TSTMS INTO
PARTS OF NRN MS SUNDAY AFTERNOON. THE AREA OF LOW SEVERE
PROBABILITIES HAS BEEN EXTENDED W TO INCLUDE NRN MS FOR THIS REASON
COMBINED WITH MODEL CONSENSUS INDICATING TSTM DEVELOPMENT ACROSS
THIS REGION.

...PARTS OF NRN AND CENTRAL FL...
ALTHOUGH A WARM/MOIST AIR MASS WILL EXIST ACROSS THIS REGION...
POINT FORECAST SOUNDINGS INDICATE A WARM LAYER BETWEEN 850-700 MB
WHICH MAY TEND TO LIMIT UPDRAFT ACCELERATIONS AND THE OVERALL
DEVELOPMENT OF MORE ROBUST STORMS. HOWEVER...STRONG DEEP LAYER
WESTERLIES SUGGEST THAT STRONGER CORES THAT CAN DEVELOP WILL HAVE
THE POTENTIAL TO PRODUCE BRIEF GUSTY WINDS.

..PETERS.. 05/17/2008

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KGRB [171701]: Preliminary Local Storm Report

NWUS53 KGRB 171701
LSRGRB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
1200 PM CDT SAT MAY 17 2008

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

1156 AM HAIL EGG HARBOR 45.04N 87.28W
05/17/2008 M0.25 INCH DOOR WI FIRE DEPT/RESCUE

&&

$$

DC

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 171629
SWODY1
SPC AC 171626

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1126 AM CDT SAT MAY 17 2008

VALID 171630Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
BROAD UPPER-LEVEL LOW OVER NRN ONTARIO WILL SLIDE SLOWLY SEWD
TOWARDS LAKE HURON/ERN ONTARIO BY EARLY SUN. A SERIES OF MID-LEVEL
IMPULSES ROTATING AROUND THE BASE OF THE TROUGH FROM THE UPPER MS
RIVER VALLEY TO THE NORTHEAST WILL PROVIDE THE IMPETUS FOR AN
ISOLATED/MARGINAL SEVERE THREAT THROUGH EARLY EVENING.

...ERN GREAT LAKES...
LEAD SHORT WAVE TROUGH /NOW CROSSING SERN ONTARIO PER WATER VAPOR
IMAGERY/ AND ASSOCIATED COLD FRONT FROM SRN ONTARIO THROUGH NWRN OH
WILL AID IN AT LEAST ISOLATED TSTM PRODUCTION TODAY. ANTECEDENT
CLOUD COVERAGE/SHOWERS WILL CONTINUE TO SLOW SURFACE HEATING...AND
WITH SURFACE DEW POINTS IN THE 40S...ONLY POCKETS OF WEAK
INSTABILITY ARE EXPECTED TO DEVELOP. NEVERTHELESS...STRONG
LOW/MID-LEVEL WLYS SHOULD FAVOR LOCALIZED DAMAGING WINDS/MARGINAL
SEVERE HAIL.

...WRN GREAT LAKES...
AN INTENSE MID/UPPER-LEVEL JET DIVING SWD ON THE BACKSIDE OF
LARGER-SCALE TROUGH WILL PROMOTE ISOLATED/SCATTERED LOW-TOPPED TSTMS
MAINLY ACROSS WI INTO MI/NRN IL. DESPITE SURFACE DEW POINTS
GENERALLY ONLY IN THE 30S TO MIDDLE 40S...SURFACE HEATING AND 500 MB
TEMPS DROPPING TO AOB -26C WILL RESULT IN VERY STEEP LOW/MID-LEVEL
LAPSE RATES WITH MLCAPES APPROACHING 500 J/KG. THIS WILL SUPPORT
STRONG/LOCALLY SEVERE WIND GUSTS AND MARGINALLY SEVERE HAIL.

..GRAMS.. 05/17/2008

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 171229
SWODY1
SPC AC 171226

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0726 AM CDT SAT MAY 17 2008

VALID 171300Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...GREAT LAKES INTO PA/NY...
BROAD MID/UPPER LEVEL LOW WILL DEEPEN OVER ONTARIO TODAY WITH A
SERIES OF SHORTWAVE TROUGHS AND SURFACE COLD FRONTS/TROUGHS ROTATING
SWD OVER THE NRN PLAINS AND THEN EWD INTO THE NORTHEAST. OVERALL
SETUP UP WILL FAVOR POCKETS OF WEAK TO MARGINAL INSTABILITY AS
AFTERNOON HIGHS RISE THROUGH THE MID 60S UNDER VERY COLD AIR ALOFT.
ALTHOUGH...OVERALL LIMITED LOW LEVEL MOISTURE AND ATTENDANT
INSTABILITY WILL INHIBIT SEVERE THREAT ACROSS THE REGION.

SECONDARY ENERGY ALOFT IS FORECAST TO DIG SSEWD ACROSS THE NRN MS
RIVER VALLEY/WI WHICH SHOULD FOCUS A CLUSTER OF LOW TOPPED
THUNDERSTORMS THIS AFTERNOON. H5 TEMPS SHOULD DROP TO AOB -26C OVER
THE WRN/CENTRAL GREAT LAKES AS STRONG MID LEVEL JET SETTLES SWD
ACROSS THE OH RIVER VALLEY/MID ATLANTIC. THUS...DESPITE DRY LOW
LEVELS IN PLACE...SBCAPE NEAR 500 J/KG IS EXPECTED OVER PORTIONS OF
THE NRN MS RIVER VALLEY INTO LOWER MI THIS AFTERNOON. THIS SHOULD
SUPPORT HAIL AND STRONGER GUSTS...SOME OF EACH COULD APPROACH OR
BRIEFLY EXCEED SEVERE LEVELS...INTO THE EARLY EVENING.

ANOTHER...BROADER AREA OF LOW TOPPED THUNDERSTORMS IS EXPECTED TO
DEVELOP NEAR LEADING SHORTWAVE TROUGH AND ASSOCIATED SURFACE COLD
FRONT MOVING INTO FAR ERN OH/WRN PA INTO NY. VERY STRONG WLY LOW TO
MID LEVEL WINDS SHOULD FAVOR ISOLATED STRONG/DAMAGING WINDS...GIVEN
DIURNAL STEEPENING OF LOW LEVEL LAPSE RATES.

..EVANS/CROSBIE.. 05/17/2008

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KLCH [171206]: Preliminary Local Storm Report...summary

NWUS54 KLCH 171206
LSRLCH

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LAKE CHARLES LA
706 AM CDT SAT MAY 17 2008

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

0520 AM TORNADO 4 SW GUEYDAN 29.99N 92.56W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

EF0 TORNADO CAUSED MINOR DAMAGE TO TREES AND BLEW DOWN
ONE BARN ON RAOUL ROAD. PATH LENGTH 1/4 MILE. PATH WIDTH
25 YARDS.

0615 AM TORNADO 4 W MAURICE 30.11N 92.19W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

A TORNADO BEGAN SW OF HWY 92/HWY 343 INTERSECTION AND
MOVED NORTHEAST. MOBILE HOME ON BLOCKS DESTROYED AND
HOUSE MOVED OFF FOUNDATION NEAR START OF PATH. MINOR
DAMAGE TO HOMES IN ADOLA SUBDIVISION. SEVERAL TREES AND
POWER LINES BLOWN DOWN. ONLY EF0 DAMAGE NOTED IN
VERMILION PARISH. TORNADO CONTINUED INTO LAFAYETTE
PARISH.

0618 AM TORNADO 7 SSW SCOTT 30.14N 92.14W
05/15/2008 F2 LAFAYETTE LA NWS STORM SURVEY

THIS IS A CONTINUATION OF THE TORNADO THAT BEGAN WEST OF
MAURICE IN VERMILION PARISH. TORNADO CONTINUED NORTHEAST
WITH MINOR DAMAGE TO HOMES AND TREES NOTED. THE TORNADO
STRENGTHENED AS IT APPROACHED HWY 724/BREAUX RD CAUSING
EF1/LOW-END EF2 DAMAGE. ONE HOME HAD ITS ROOF COMPLETELY
BLOWN OFF WITH OTHER HOMES AND BUILDINGS DAMAGED.
NUMEROUS TREES AND POWER LINES WERE BLOWN DOWN. THE
TORNADO LIFTED 1 MILE WEST OF THE MALL OF ACADIANA AT 630
AM. TOTAL PATH LENGTH 9 MILES AND PATH WIDTH 200 YARDS.

0635 AM TORNADO 4 SSW LAFAYETTE 30.16N 92.05W
05/15/2008 F0 LAFAYETTE LA NWS STORM SURVEY

EF0 TORNADO TOUCHED DOWN JUST WEST OF AMBASSADOR CAFFERY
PKWY/SETTLERS TRACE BLVD INTERSECTION IN LAFAYETTE AND
MOVED NORTHEAST THROUGH THE BEAULLIEU PLACE AND RIVER
RANCH SUBDIVISIONS. SCATTERED TREES WERE BLOWN DOWN WITH
MINOR DAMAGE TO SOME HOMES. PATH LENGTH OF 1/2 MILE AND
PATH WIDTH OF 25 YARDS.

0635 AM TORNADO 8 SW ABBEVILLE 29.89N 92.22W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

EF0 TORNADO BEGAN IN THE THEALL COMMUNITY AND MOVED EAST
CROSSING THE HWY 82/HWY 690 INTERSECTION. TORNADO THEN
MOVED EAST ALONG HWY 690 AND STRUCK THE GRAND ISLE
SHIPYARD NORTH OF THE BANCKER COMMUNITY. NUMEROUS TREES
WERE BLOWN DOWN AND DAMAGED ALONG THE PATH...WITH MINOR
DAMAGE TO HOMES AND THE SHIPYARD. PATH LENGTH 7 MILES AND
PATH WIDTH OF 50 YARDS.

0640 AM TORNADO 1 S LAFAYETTE 30.20N 92.03W
05/15/2008 F1 LAFAYETTE LA NWS STORM SURVEY

EF1 TORNADO BEGAN SW OF COLLEGE RD/BENDEL RD INTERSECTION
AND MOVED NORTHEAST ACROSS OIL CENTER AREA OF LAFAYETTE.
SEVERAL BUILDINGS HAD SIGNIFICANT ROOF DAMAGE WITH DEBRIS
FROM ROOFS KNOCKING OUT WINDOWS IN NEIGHBORING BUILDINGS.
TREES AND POWER POLES WERE DOWNED WITH SOME TREES FALLING
ON CARS. TORNADO LIFTED NE OF PINHOOK RD/UNIVERSITY AVE
INTERSECTION. PATH LENGTH OF 1 MILE AND PATH WIDTH OF 100
YARDS.

0645 AM TORNADO BREAUX BRIDGE 30.28N 91.90W
05/15/2008 F1 ST. MARTIN LA NWS STORM SURVEY

*** 1 INJ *** EF1 TORNADO BEGAN ALONG I-10 NEAR THE
WALMART AND MOVED SOUTH THROUGH THE CITY. SEVERAL HOMES
AND BUSINESSES WERE SIGNIFICANTLY DAMAGED ALONG HWY 328
AND HWY 94 WITH TREES DOWNED. TORNADO CROSSED HWY 31 AND
TURNED SOUTHEAST WITH CONTINUED DAMAGE TO HOMES AND
TREES. TORNADO CONTINUED SOUTHEAST AND AGAIN CROSSED HWY
31 WITH MORE DAMAGE TO HOMES AND TREES. ONE MINOR INJURY
OCCURRED WHEN HOME SHIFTED OFF FOUNDATION NEAR END OF
PATH ALONG HUVAL RD. PATH LENGTH OF 5 MILES AND PATH
WIDTH OF 50 YARDS.

&&

$$

SHAMBURGER

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KLCH [171205]: Preliminary Local Storm Report...corrected

NWUS54 KLCH 171205
LSRLCH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
705 AM CDT SAT MAY 17 2008

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

0645 AM TORNADO BREAUX BRIDGE 30.28N 91.90W
05/15/2008 F1 ST. MARTIN LA NWS STORM SURVEY

*** 1 INJ *** EF1 TORNADO BEGAN ALONG I-10 NEAR THE
WALMART AND MOVED SOUTH THROUGH THE CITY. SEVERAL HOMES
AND BUSINESSES WERE SIGNIFICANTLY DAMAGED ALONG HWY 328
AND HWY 94 WITH TREES DOWNED. TORNADO CROSSED HWY 31 AND
TURNED SOUTHEAST WITH CONTINUED DAMAGE TO HOMES AND
TREES. TORNADO CONTINUED SOUTHEAST AND AGAIN CROSSED HWY
31 WITH MORE DAMAGE TO HOMES AND TREES. ONE MINOR INJURY
OCCURRED WHEN HOME SHIFTED OFF FOUNDATION NEAR END OF
PATH ALONG HUVAL RD. PATH LENGTH OF 5 MILES AND PATH
WIDTH OF 50 YARDS.

&&

$$

SHAMBURGER

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KLCH [171144]: Preliminary Local Storm Report...corrected

NWUS54 KLCH 171144
LSRLCH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
644 AM CDT SAT MAY 17 2008

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

0640 AM TORNADO 1 S LAFAYETTE 30.20N 92.03W
05/15/2008 F1 LAFAYETTE LA NWS STORM SURVEY

EF1 TORNADO BEGAN SW OF COLLEGE RD/BENDEL RD INTERSECTION
AND MOVED NORTHEAST ACROSS OIL CENTER AREA OF LAFAYETTE.
SEVERAL BUILDINGS HAD SIGNIFICANT ROOF DAMAGE WITH DEBRIS
FROM ROOFS KNOCKING OUT WINDOWS IN NEIGHBORING BUILDINGS.
TREES AND POWER POLES WERE DOWNED WITH SOME TREES FALLING
ON CARS. TORNADO LIFTED NE OF PINHOOK RD/UNIVERSITY AVE
INTERSECTION. PATH LENGTH OF 1 MILE AND PATH WIDTH OF 100
YARDS.

&&

$$

SHAMBURGER

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KLCH [171138]: Preliminary Local Storm Report

NWUS54 KLCH 171138
LSRLCH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
638 AM CDT SAT MAY 17 2008

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

0635 AM TORNADO 4 SSW LAFAYETTE 30.16N 92.05W
05/15/2008 F0 LAFAYETTE LA NWS STORM SURVEY

EF0 TORNADO TOUCHED DOWN JUST WEST OF AMBASSADOR CAFFERY
PKWY/SETTLERS TRACE BLVD INTERSECTION IN LAFAYETTE AND
MOVED NORTHEAST THROUGH THE BEAULLIEU PLACE AND RIVER
RANCH SUBDIVISIONS. SCATTERED TREES WERE BLOWN DOWN WITH
MINOR DAMAGE TO SOME HOMES. PATH LENGTH OF 1/2 MILE AND
PATH WIDTH OF 25 YARDS.

&&

$$

SHAMBURGER

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KLCH [171131]: Preliminary Local Storm Report...corrected

NWUS54 KLCH 171131
LSRLCH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
631 AM CDT SAT MAY 17 2008

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

0635 AM TORNADO 8 SW ABBEVILLE 29.89N 92.22W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

EF0 TORNADO BEGAN IN THE THEALL COMMUNITY AND MOVED EAST
CROSSING THE HWY 82/HWY 690 INTERSECTION. TORNADO THEN
MOVED EAST ALONG HWY 690 AND STRUCK THE GRAND ISLE
SHIPYARD NORTH OF THE BANCKER COMMUNITY. NUMEROUS TREES
WERE BLOWN DOWN AND DAMAGED ALONG THE PATH...WITH MINOR
DAMAGE TO HOMES AND THE SHIPYARD. PATH LENGTH 7 MILES AND
PATH WIDTH OF 50 YARDS.

&&

$$

SHAMBURGER

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KLCH [171113]: Preliminary Local Storm Report...corrected

NWUS54 KLCH 171113
LSRLCH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
612 AM CDT SAT MAY 17 2008

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

0615 AM TORNADO 4 W MAURICE 30.11N 92.19W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

A TORNADO BEGAN SW OF HWY 92/HWY 343 INTERSECTION AND
MOVED NORTHEAST. MOBILE HOME ON BLOCKS DESTROYED AND
HOUSE MOVED OFF FOUNDATION NEAR START OF PATH. MINOR
DAMAGE TO HOMES IN ADOLA SUBDIVISION. SEVERAL TREES AND
POWER LINES BLOWN DOWN. ONLY EF0 DAMAGE NOTED IN
VERMILION PARISH. TORNADO CONTINUED INTO LAFAYETTE
PARISH.

0618 AM TORNADO 7 SSW SCOTT 30.14N 92.14W
05/15/2008 F2 LAFAYETTE LA NWS STORM SURVEY

THIS IS A CONTINUATION OF THE TORNADO THAT BEGAN WEST OF
MAURICE IN VERMILION PARISH. TORNADO CONTINUED NORTHEAST
WITH MINOR DAMAGE TO HOMES AND TREES NOTED. THE TORNADO
STRENGTHENED AS IT APPROACHED HWY 724/BREAUX RD CAUSING
EF1/LOW-END EF2 DAMAGE. ONE HOME HAD ITS ROOF COMPLETELY
BLOWN OFF WITH OTHER HOMES AND BUILDINGS DAMAGED.
NUMEROUS TREES AND POWER LINES WERE BLOWN DOWN. THE
TORNADO LIFTED 1 MILE WEST OF THE MALL OF ACADIANA AT 630
AM. TOTAL PATH LENGTH 9 MILES AND PATH WIDTH 200 YARDS.

&&

$$

SHAMBURGER

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KLCH [171027]: Preliminary Local Storm Report...corrected

NWUS54 KLCH 171027
LSRLCH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LAKE CHARLES LA
526 AM CDT SAT MAY 17 2008

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

0520 AM TORNADO 4 SW GUEYDAN 29.99N 92.56W
05/15/2008 F0 VERMILION LA NWS STORM SURVEY

EF0 TORNADO CAUSED MINOR DAMAGE TO TREES AND BLEW DOWN
ONE BARN ON RAOUL ROAD. PATH LENGTH 1/4 MILE. PATH WIDTH
25 YARDS.

&&

$$

SHAMBURGER

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 170830
SWOD48
SPC AC 170829

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0329 AM CDT SAT MAY 17 2008

VALID 201200Z - 251200Z

...DISCUSSION...
GFS AND ECMWF IN SLIGHTLY BETTER AGREEMENT THIS FORECAST...THOUGH
LARGE DIFFERENCES CONTINUE TO EXIST BETWEEN THE TWO MODELS. BOTH
MODELS FORECAST SIGNIFICANT AMPLIFICATION OF THE UPPER PATTERN
THROUGH THE FORECAST PERIOD...WITH A LARGE TROUGH EVOLVING OVER THE
WEST AND A SECOND TROUGH PERSISTING ACROSS THE EAST...SEPARATED BY A
SHARP RIDGE.

THE ECMWF REMAINS MUCH MORE PERSISTENT WITH THE ERN FEATURE...AND
THUS MAINTAINS A RIDGE OVER THE CENTRAL U.S. BETWEEN TWO
HIGHLY-AMPLIFIED TROUGHS -- A CLASSIC OMEGA BLOCK.

MEANWHILE...THE GFS IS MUCH WEAKER WITH THE ERN TROUGH/UPPER
LOW...ALLOWING THIS FEATURE TO PROGRESS SLOWLY EWD INTO THE WRN
ATLANTIC. AS THIS OCCURS...THE CENTRAL U.S. RIDGE SHIFTS SLOWLY EWD
INTO THE ERN U.S. THROUGH THE END OF THE PERIOD...THUS FACILITATING
THE EVENTUAL DEAMPLIFICATION OF THE LARGE WRN U.S. TROUGH BY DAY 8.

WHILE BOTH MODELS DEPICT DEEP SLY FLOW ACROSS THE CENTRAL U.S.
THROUGH THE FIRST HALF OF THE PERIOD -- AND THUS A RETURN OF GULF
MOISTURE WHICH SUGGESTS AN INCREASE IN CONVECTIVE POTENTIAL WITH
TIME...TIMING AND LOCATION OF ANY SEVERE EVENTS REMAINS DIFFICULT TO
DISCERN AT THIS TIME. THUS...WILL NOT ATTEMPT TO OUTLOOK ANY THREAT
AREAS ATTM.

..GOSS.. 05/17/2008

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 170731
SWODY3
SPC AC 170728

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 AM CDT SAT MAY 17 2008

VALID 191200Z - 201200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
LARGE-SCALE PATTERN EXPECTED TO CHANGE LITTLE DAY 3...ASIDE FROM A
SHORT-WAVE TROUGH WHICH SHOULD MOVE SLOWLY EWD/ONSHORE ACROSS THE
PAC NW...FORCING THE DOWNSTREAM RIDGE EWD ACROSS THE ROCKIES.
OTHERWISE...THE MEAN LARGE-SCALE ERN TROUGH WILL REMAIN ACROSS THE
EAST...AND A BROAD ZONE OF NWLY FLOW FROM THE NRN ROCKIES SEWD INTO
THE SOUTHEAST.

AT THE SURFACE...A VERY WEAK LOW/FRONTAL SYSTEM WILL MOVE SEWD
ACROSS THE CENTER OF THE COUNTRY...WHILE A DEEP LOW REMAINS ACROSS
FAR NRN NEW ENGLAND/ERN CANADA.

...OZARKS EWD INTO THE MID MS/LOWER OH/TN VALLEYS...
WHILE MODELS DIFFER WITH RESPECT TO TIMING AND PLACEMENT...ALL AGREE
THAT A WEAK SURFACE LOW AND ASSOCIATED FRONTAL SYSTEM WILL MOVE SEWD
OUT OF THE CENTRAL PLAINS AND INTO THE OZARKS/MID MS/LOWER OH VALLEY
REGION...WITHIN DEEP NWLY FLOW AT MID/UPPER LEVELS.

WITH SURFACE FLOW FORECAST TO BECOME SLY WITH TIME AS THE SURFACE
SYSTEM MOVES SEWD...SOME NWD RETURN OF MOISTURE IS EXPECTED. MODELS
SUGGEST THAT MOISTENING/DESTABILIZATION AND A WEAKENING CAP COULD
ALLOW ISOLATED CONVECTIVE DEVELOPMENT TO OCCUR BY LATE
AFTERNOON...NEAR THE SURFACE SYSTEM. WITH MODERATE NWLY FLOW
ALOFT...A LIMITED THREAT FOR LOCALLY-DAMAGING WINDS AND/OR HAIL
COULD EVOLVE. THUS...WILL INTRODUCE 5% SEVERE THREAT ACROSS THIS
REGION. ANY THREAT SHOULD DIMINISH THROUGH THE EVENING WITH THE
ONSET OF DIURNAL COOLING.

..GOSS.. 05/17/2008

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 170559
SWODY2
SPC AC 170557

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1257 AM CDT SAT MAY 17 2008

VALID 181200Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
LARGE-SCALE UPPER TROUGH TO PREVAIL ACROSS THE ERN CONUS THIS
PERIOD...AS THE UPPER VORTEX DRIFTS ESEWD ACROSS SERN CANADA AND THE
GREAT LAKES REGION. MEANWHILE...A LARGE RIDGE -- CENTERED JUST OFF
THE CA COAST WILL PREVAIL ACROSS THE WRN HALF OF THE U.S. THROUGH
THE PERIOD.

AT THE SURFACE...TROUGHING IN LEE OF THE ROCKIES DURING THE FIRST
HALF OF THE PERIOD SHOULD SHIFT EWD INTO THE PLAINS/CANADIAN
PRAIRIE. MEANWHILE...A WEAK/REINFORCING COLD FRONT IS EXPECTED TO
CROSS THE APPALACHIANS BY AFTERNOON...AND THEN CONTINUE EWD/OFF THE
ATLANTIC COAST AND SEWD ACROSS GA AND INTO FL THROUGH THE END OF THE
PERIOD.

...MID-ATLANTIC REGION WSWWD INTO NRN GA/PARTS OF NRN AL...
MINIMAL DESTABILIZATION IS FORECAST ACROSS THE MID-ATLANTIC REGION
AND WSWWD ACROSS THE CAROLINAS INTO NRN GA/NERN AL AHEAD OF A
FAST-MOVING COLD FRONT. THOUGH A LINE OF SHOWERS AND STORMS MAY
DEVELOP DURING THE AFTERNOON ALONG/AHEAD OF THE FRONT...LIMITED
INSTABILITY SUGGESTS THAT MOST STORMS SHOULD REMAIN BELOW SEVERE
LEVELS. NONETHELESS...STRONG/ROUGHLY UNIDIRECTIONAL DEEP-LAYER WIND
FIELD WOULD SUGGEST A THREAT FOR LOCALLY-DAMAGING WINDS DURING THE
AFTERNOON...WITH ANY STRONGER LINE SEGMENT. THUS...WILL INTRODUCE
LOW /5%/ SEVERE PROBABILITY ACROSS THIS REGION.

...PARTS OF NRN AND CENTRAL FL...
WEAK LAPSE RATES/MINIMAL INSTABILITY BUT RELATIVELY STRONG MID-LEVEL
WLYS SHOULD CHARACTERIZE THE THERMODYNAMIC AND KINEMATIC ENVIRONMENT
ACROSS THE NRN 2/3 OF THE FL PENINSULA DURING THE AFTERNOON. WHILE
WEAK INSTABILITY SUGGESTS THAT STORMS SHOULD REMAIN GENERALLY
WEAK...A STRONGER CELL OR TWO CAPABLE OF BRIEF GUSTY WINDS CANNOT BE
RULED OUT.

..GOSS.. 05/17/2008

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 170510
SWODY1
SPC AC 170508

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1208 AM CDT SAT MAY 17 2008

VALID 171200Z - 181200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

BLOCKING SYNOPTIC PATTERN WILL PREVAIL SATURDAY WITH HIGH AMPLITUDE
UPPER RIDGE OVER THE WRN U.S. ALONG WITH AN UPPER TROUGH OVER THE
ERN STATES. SEVERAL JET AND ATTENDANT VORTICITY MAXIMA WILL ROTATE
THROUGH THE ERN U.S. UPPER TROUGH. CUTOFF UPPER LOW OVER NRN MEXICO
IS FORECAST TO SHIFT ESEWD AND INTO SRN TX. A COLD FRONT WILL MOVE
SWD THROUGH FL...WHILE SEVERAL SURFACE TROUGHS ADVANCE SWD AND EWD
THROUGH THE UPPER MS AN OH VALLEYS IN ASSOCIATION WITH VORTICITY
MAXIMA ROTATING THROUGH LARGER SCALE UPPER TROUGH.

...GREAT LAKES AND OH VALLEY REGION...

UPPER JET MAX NOW MOVING INTO WI WILL CONTINUE SEWD THROUGH BASE OF
UPPER TROUGH AND INTO THE OH VALLEY AND LOWER GREAT LAKES REGION...
WHILE AN UPSTREAM SPEED MAX DROPS SEWD INTO THE UPPER MS VALLEY. IN
SITU MOISTURE WILL BE SOMEWHAT LIMITED WITH SURFACE DEWPOINTS IN THE
30S AND 40S. HOWEVER...COLD AIR ALOFT NORTH OF JET MAXIMA WITH
TEMPERATURES AOB -18C AT 500 MB AND STEEP MID LEVEL LAPSE RATES WILL
RESULT IN MLCAPE AOB 500 J/KS AS THE BOUNDARY LAYER WARMS. SCATTERED
THUNDERSTORMS WILL DEVELOP AS THE ATMOSPHERE DESTABILIZES WITH
STORMS MORE NUMEROUS WITHIN ZONES OF ASCENT ASSOCIATED WITH THE
MIGRATING JET AND ATTENDANT VORTICITY MAXIMA. GIVEN STRONG LARGELY
UNIDIRECTIONAL DEEP LAYER KINEMATIC PROFILES...STEEP LAPSE RATES AND
DRY BOUNDARY LAYERS...THREAT WILL EXIST FOR ISOLATED
STRONG-DAMAGING WIND GUSTS AND MARGINALLY SEVERE HAIL.

...CNTRL FL...

WITH RICH LOW LEVEL MOISTURE IN PLACE THE ATMOSPHERE WILL
DESTABILIZE AS THE BOUNDARY LAYER WARMS DURING THE AFTERNOON.
HOWEVER...WEAK MID LEVEL LAPSE RATES RESULTING FROM WARM MID LEVEL
TEMPERATURES WILL LIMIT DEGREE OF INSTABILITY WITH MLCAPE AOB 1000
J/KG. A FEW STORMS MAY DEVELOP ALONG AND AHEAD OF THE FRONT AND IN
ASSOCIATION WITH SEA BREEZE BOUNDARIES. THE STRONGER STORMS MAY
BECOME CAPABLE OF PRODUCING ISOLATED WET MICROBURSTS THROUGH EARLY
EVENING.

..DIAL.. 05/17/2008

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