Alert archive / West Virginia / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 19, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at May 16, 2009, 4:02 PM EDT for Preston County, West Virginia. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 16, 2009, 4:02 PM EDT (20:02 UTC)
- Expired
- May 16, 2009, 4:23 PM EDT
- In force
- 21 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
County Preston County, WV
The radar
The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 20:04 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 8.0 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 88 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 3:01 PM EDT, 1 hour 1 minute earlier.
Area forecast discussion, May 16, 3:01 PM EDT, 1 hour 1 minute before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 301 PM EDT SAT MAY 16 2009 .SYNOPSIS... A COLD FRONT WILL MOVE THROUGH THE REGION THIS EVENING BRINGING SHOWERS AND THUNDERSTORMS. SOME STORMS MAY BE SEVERE. HIGH PRESSURE WILL BRING DRIER AND COOLER AIR INTO THE UPPER OHIO VALLEY BEGINNING LATER TONIGHT. && .NEAR TERM /THROUGH TONIGHT/... A COLD FRONT WILL CONTINUE TO PUSH EAST ACROSS THE FORECAST AREA THIS EVENING. SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AHEAD OF AND ALONG FRONT WITH POTENTIAL FOR SOME STORMS TO PRODUCE DAMAGING WINDS EARLY THIS EVENING. PRECIPITATION WILL QUICKLY END BEHIND FRONT LATER TONIGHT AS SURFACE HIGH BUILDS INTO REGION. TEMPERATURES WILL DROP INTO THE 40S BY DAWN. && .SHORT TERM /SUNDAY THROUGH MONDAY/... SURFACE HIGH WILL DRIFT EAST ALONG THE OHIO VALLEY SUNDAY THROUGH MONDAY. MUCH COOLER AND DRIER AIR WILL HOLD ACROSS THE REGION. WENT CLOSE TO GFS MOS TEMPERATURES WITH HIGHS IN THE MID 50S NORTH TO LOWER 60S SOUTH SUNDAY. LIGHT WINDS AND CLEAR SKIES WILL ALLOW FOR GOOD RADIATIONAL COOLING SUNDAY NIGHT. WILL INCLUDE MENTION OF AREAS OF FROST IN WORDING FOR ZONES WITH LOW TEMPERATURES IN THE LOWER TO MID 30S. TEMPERATURES SHOULD REMAIN A FEW DEGREES BELOW NORMAL FOR MONDAY WITH HIGHS IN THE 60S. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... RIDGING WILL CONTINUE OVER THE REGION THROUGH MIDWEEK. GFS DOES HINT AT SOME FLATTENING OF THE RIDGE FOR MIDWEEK...BUT WILL KEEP CONDITIONS DRY WITH SOME INCREASE IN CLOUDS. THE NEXT BEST CHANCE AT PRECIP LOOKS TO BE NEXT WEEKEND AS LOW PRESSURE IS PROGGED TO AFFECT THE AREA. SEASONAL TEMPERATURES WILL PREVAIL FOR TUE/WED...WARMING TO ABOVE NORMAL FOR THE LATTER HALF OF THE WEEK. && .AVIATION /19Z SATURDAY THROUGH THURSDAY/... SCT SHWRS/TSTMS CONTINUE TO DEVELOP ACROSS EASTERN OHIO/WESTERN PA IN ADVANCE OF THE COLD FRONT WHICH IS CROSSING CENTRAL OHIO. ACTIVITY WILL CONTINUE TO INCREASE WITH THE FRONTAL APPROACH...WITH THE PERIOD OF GREATEST ACTIVITY ALONG A ZZV/FKL LINE FROM 18-20Z...20-22Z HLG/PIT/DUJ...AND 22-01Z MGW/LBE. EXPECT PREVAILING MVFR CONDITIONS ALONG THE FRONT...WITH AREAS OF IFR IN THE HEAVIER SHWRS/TSTMS. WILL INCLUDE SOME HIGHER GUSTS WITH THE STRONGER TSTMS LATE THIS AFTN. SFC WINDS WILL GUST TO 20 TO 25 MPH OUT OF THE SW AHEAD OF FRONT SHIFTING TO WEST-NORTHWEST BEHIND THE BOUNDARY. SFC FRONT WILL STREAK TO THE EAST TONIGHT...WITH CONDITIONS RETURNING TO VFR BY LATE THIS EVENING. HIGH PRESSURE WILL BUILD ACROSS THE AREA SUNDAY THROUGH EARLY NEXT WEEK WITH MOSTLY CLEAR SKIES. MEDIUM RANGE MODELS CONTINUE TO SHOW THE RIDGE FLATTENING TOWARD MIDWEEK...WITH THE GFS HINTING AT SOME POTENTIAL FOR SHWRS TUE NIGHT/WED. WILL KEEP CONDITIONS DRY AND VFR WITH PERHAPS SOME INCREASE IN MID DECK CLOUDS FOR MIDWEEK. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
Hazardous weather outlook, May 16, 12:20 PM EDT, 3 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1220 PM EDT SAT MAY 16 2009 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-171630- GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO- FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY- ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE-FAYETTE-HANCOCK- BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER- 1220 PM EDT SAT MAY 16 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING AS A COLD FRONT MOVES ACROSS THE REGION. THE PRIMARY SEVERE THREAT WILL BE DAMAGING WIND GUSTS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, May 16, 2:14 PM EDT, 1 hour 48 minutes before
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SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 239 PM EDT SAT MAY 16 2009 PAZ008-009-161930- FOREST PA-VENANGO PA- 239 PM EDT SAT MAY 16 2009 ...THUNDERSTORMS... MORE THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES... FOREST... AT 237 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED STRONG THUNDERSTORMS MOVING OUT OF VENANGO COUNTY AND INTO FOREST COUNTY. THE STORMS WERE MOVING TO THE NORTHEAST AT ABOUT 40 MPH. BE ALERT FOR GUSTY WINDS TO NEAR 40 MPH...DIME SIZE HAIL...DANGEROUS LIGHTNING...AND VERY HEAVY DOWNPOURS. KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS APPROACH. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772. PRECAUTIONARY/PREPAREDNESS ACTIONS... $$ A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SATURDAY EVENING FOR EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA. &&
Special weather statement, May 16, 3:06 PM EDT, 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 306 PM EDT SAT MAY 16 2009 PAZ008-009-015-016-022-162000- ARMSTRONG PA-CLARION PA-FOREST PA-JEFFERSON PA-VENANGO PA- 306 PM EDT SAT MAY 16 2009 ...THUNDERSTORMS... THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES... ARMSTRONG...JEFFERSON...VENANGO...FOREST AND CLARION... AT 303 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED STRONG THUNDERSTORMS 5 MILES NORTHEAST OF VAN...MOVING EAST AT 35 MPH. SOME OF THESE STORMS WILL BE ACCOMPANIED BY DANGEROUS LIGHTNING... SMALL HAIL AND WIND GUSTS TO 50 MPH. SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE... VAN... SENECA... OIL CITY... KNOX... CLARION... FRYBURG... LIMESTONE... TIONESTA... WEST HICKORY... SUMMERVILLE... COOK FOREST STATE PARK... KELLETTVILLE... KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS APPROACH. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.
Special weather statement, May 16, 3:13 PM EDT, 49 minutes before
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</html>Special weather statement, May 16, 3:49 PM EDT, 13 minutes before
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</html>Local storm report, May 16, 3:51 PM EDT, 11 minutes before
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 3:31 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia | 44 min |
Nearby
Severe Thunderstorm Warnings in West Virginia, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.