Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 28, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at May 22, 2014, 12:31 AM EDT for 6 counties in Pennsylvania. It was in force for 44 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 22, 2014, 12:31 AM EDT (04:31 UTC)
- Expired
- May 22, 2014, 1:15 AM EDT
- In force
- 44 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
Counties Armstrong County, PA, Butler County, PA, Clarion County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA
The nearest sounding before it
Pittsburgh, PA (KAGC), launched 00:00Z, 4.5 hours before the alert went out and 80 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
- 819 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 785 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.1
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 21, 9:40 PM EDT, 2 hours 51 minutes earlier.
Area forecast discussion, May 21, 9:40 PM EDT, 2 hours 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 940 PM EDT WED MAY 21 2014 .SYNOPSIS... SHOWER AND THUNDERSTORM CHANCES WILL CONTINUE UNTIL A COLD FRONT CROSSES THE REGION LATE TONIGHT INTO THURSDAY MORNING. && .NEAR TERM /THROUGH THURSDAY/... A SHRTWV MOVG ACRS NRN OH/LK ERIE WL CROSS THE AREA TNGT. MESO DATA/EVE RAOBS SHOW THE BEST INSTBY IS OVR NRN OH. EXPG ONGOING TSTMS IN OH TO WKN SOME AS THEY MOVE INTO OUR RGN TNGT WHERE INSTBY IS DCRG. KEPT HIGHEST POPS FOR SCT SHWRS/TSTMS N OF PIT...WITH ISOLD ACTIVITY EXP ELSW. A CDFNT WL APCH TWD MRNG...KEEPING A CHANCE OF SHWRS AND PSBLY A TSTM UNTIL FROPA. HIGH PRES RIDGING IS EXPD LTR THU. && .SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/... HIGH PRESSURE IS EXPECTED TO DROP FROM MINNESOTA THURSDAY NIGHT TOWARDS CHICAGO AND REMAIN NEARLY STATIONARY THROUGH SATURDAY. AN UPPER LEVEL LOW WILL REMAIN ACROSS NEW ENGLAND...AND SEPARATE SHORTWAVES ARE EXPECTED TO ROTATE ACROSS THE WEST SIDE OF THE LOW DURING THE DAY ON FRIDAY AND AGAIN ON SATURDAY. THIS WILL KEEP A CHANCE OF RAIN IN LOCATIONS EAST OF INTERSTATE 79 ON FRIDAY...AND A LESSER CHANCE ON SATURDAY. ALTHOUGH RAIN CHANCES WILL BE CONFINED TO EASTERN PORTIONS OF THE FORECAST AREA...AT LEAST PARTLY CLOUDY SKIES IN ALL LOCATIONS WILL RESULT IN TEMPERATURE SLIGHTLY BELOW NORMAL. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... RIDGING WL BLD IN SUN/MON WITH DRY WEA AND A WRMG TREND. A LOW CHANCE OF SHOWERS IS EXPD LATER TUESDAY AND WEDNESDAY WITH INCREASING LOW LEVEL MOISTURE AND INSTABILITY. && .AVIATION /02Z THURSDAY THROUGH MONDAY/... SWATH OF MID LVL CLDINESS...WITH SOME ISOLD SHWRS AND TSTMS...WL PERSIST OVR AREAS SURROUNDING MGW THIS EVE AS SHRTWV IN WNW FLOW ALOFT WORKS SEWD. OTHERWISE...SOME MVFR FOG...AND POSSIBLY SOME LATE STRATOCU ARE EXPECTED TO PLAGUE THE AREA TNGT AS WIND DIMINISHES AND A CDFNT SAGS TWD THE REGION. THAT FRONT WL COMPLETE PASSAGE ON THURSDAY AND ENSURE GENL VFR FOR THE WEEKEND. .OUTLOOK.../THURSDAY NIGHT THROUGH MONDAY/... THE NXT CHC FOR GENL RESTRICTIONS IS EXPECTED WITH A LATE MONDAY CDFNT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && 07/15
Hazardous weather outlook, May 21, 9:12 PM EDT, 3 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PITTSBURGH PA 912 PM EDT WED MAY 21 2014 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-230115- 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-GREENE-WESTMORELAND-WESTMORELAND RIDGES- FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA-PRESTON-TUCKER- 912 PM EDT WED MAY 21 2014 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...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. 07
In the hours before
Special weather statement, May 21, 6:33 PM EDT, 5 hours 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 633 PM EDT WED MAY 21 2014 OHZ058-068-212300- GUERNSEY OH-NOBLE OH- 633 PM EDT WED MAY 21 2014 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN NOBLE AND SOUTHWESTERN GUERNSEY COUNTIES... AT 631 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES WEST OF BYESVILLE...MOVING SOUTHEAST AT 30 MPH. WIND GUSTS TO 50 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THIS STORM. HEAVY RAIN WILL POND WATER ON ROADS AND QUICKLY FILL SMALL STREAMS. LOCATIONS IMPACTED INCLUDE... BYESVILLE... SENECAVILLE... SENECA LAKE PARK... PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH. LAT...LON 3990 8131 3980 8157 3995 8170 4005 8154 15
Special weather statement, May 21, 7:10 PM EDT, 5 hours 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
710 PM EDT WED MAY 21 2014
OHZ058-068-069-220000-
GUERNSEY OH-MONROE OH-NOBLE OH-
710 PM EDT WED MAY 21 2014
...A STRONG THUNDERSTORM WILL AFFECT NOBLE...SOUTH CENTRAL GUERNSEY
AND SOUTHWESTERN MONROE COUNTIES...
AT 705 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
SHOWED A STRONG THUNDERSTORM LOCATED NEAR SARAHSVILLE...MOVING
SOUTHEAST AT 20 MPH.
WIND GUSTS TO 50 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
WOLF RUN STATE PARK... SENECA LAKE PARK...
BELLE VALLEY... SARAHSVILLE... CALDWELL...
SUMMERFIELD... DUDLEY... HARRIETTSVILLE...
GRAYSVILLE...
PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH
FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH.
LAT...LON 3994 8144 3965 8108 3957 8121 3957 8126
3960 8128 3959 8129 3959 8139 3963 8143
3963 8145 3983 8163
07Special weather statement, May 21, 11:25 PM EDT, 1 hour 6 minutes before
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</html>Local storm report, May 22, 12:30 AM EDT, 1 minute before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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<p id="message2">
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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 21, 9:46 PM EDT | Areal Flood Warning | PBZ | Forest, Venango | 12 hr |
| May 21, 10:28 PM EDT | River Flood Warning | PBZ | Armstrong, Clarion | 22 hr |
| May 21, 10:28 PM EDT | River Flood Warning | PBZ | Allegheny | 29 hr |
| May 21, 10:34 PM EDT | River Flood Advisory | PBZ | Allegheny | 41 hr |
| May 21, 11:25 PM EDT | Special Weather Statement | PBZ | Mercer | 50 min |
| May 21, 11:31 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 59 min |
| May 22, 1:45 AM EDT | Special Weather Statement | PBZ | Armstrong, Indiana | 45 min |
| May 22, 2:04 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Westmoreland | 41 min |
| May 22, 5:37 AM EDT | Special Weather Statement | PBZ | Muskingum | 38 min |
| May 22, 8:14 AM EDT | Special Weather Statement | PBZ | Muskingum | 46 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2014Every severe thunderstorm warning in 2014
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.