Hail, Westmoreland
- When
- May 14, 2:06 PM EST
- Where
- Westmoreland County, Jeanette
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 40.330, -79.620
Hail and Damaging Wind in Pennsylvania, May 14, 2010
Scattered severe thunderstorms developed across western Pennsylvania, northern West Virginia, and Garrett county Maryland ahead of a cold front moving east across the Ohio Valley. One long lived supercell produced large hail across northern West Virginia and Garrett county, Maryland.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $15,000
- Crop damage
- None recorded
- Events
- 13
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS PBZ wrote it up.
Scattered severe thunderstorms developed across western Pennsylvania, northern West Virginia, and Garrett county Maryland ahead of a cold front moving east across the Ohio Valley. One long lived supercell produced large hail across northern West Virginia and Garrett county, Maryland.
What forecasters said that day
The local office's own words before the first event, 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 the first event at May 14, 2:05 PM EST, 1 minute earlier.
Area forecast discussion, May 14, 2:05 PM EST, 1 minute before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 305 PM EDT FRI MAY 14 2010 .SYNOPSIS... A COLD FRONT ACROSS SOUTHWEST PENNSYLVANIA WILL PRODUCE SCATTERED THUNDERSTORMS THIS EVENING BEFORE MOVING SOUTH OF THE REGION TONIGHT. HIGH PRESSURE WILL BRING MUCH DRIER AIR INTO THE REGION TONIGHT AND REMAIN THROUGH THE WEEKEND. && .NEAR TERM /THROUGH SATURDAY/... COLD FRONT HAS PASSED KPIT AT 18Z AND WILL PASS SOUTHEAST PORTION OF CWA LATER THIS EVENING. SCATTERED STORMS ALONG THE BOUNDARY MAY BE SEVERE AND WATCH HAS BEEN ISSUED INTO THE EVENING. LEFTOVER SHOWERS ALONG BOUNDARY THIS EVENING THEN SHOWERS WILL END AND CLOUDS WILL BREAK OVERNIGHT AS MUCH DRIER AIR MOVES INTO REGION. DRY AND COOLER SURFACE HIGH WILL DOMINATE FOR SATURDAY. TEMPERATURES CLOSE TO MODEL MOS. && .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/... HIGH PRESSURE WILL REMAIN IN CONTROL INTO SUNDAY. BY SUNDAY NIGHT STORM SYSTEM MOVING OUT OF THE CENTRAL PLAINS TOWARD THE WESTERN GREAT LAKES WILL PUSH A WARM FRONT BACK ACROSS REGION WITH CLOUDS INCREASING BY LATER SUNDAY AND A LOW CHANCE OF SHOWERS LATE SUNDAY NIGHT. AS FRONT MOVES ACROSS REGION MONDAY EXPECT WIDESPREAD SHOWERS AND A CHANCE FOR THUNDERSTORMS AS DEEP MOISTURE RETURNS ACROSS REGION. MODEL MOS SEEMED REASONABLE AND WAS FOLLOWED. BUILD OVER THE AREA SATURDAY FOR DRY AND SEASONABLE CONDITIONS. THE RIDGE WILL FLATTEN SUNDAY...ALLOWING FOR A WEAK IMPULSE TO PERHAPS CLIP I-70 SOUTHWARD. WITH DEEP MOISTURE LACKING...WILL KEEP SUNDAY DRY...WITH SOME ENHANCED MID LEVEL CLOUDS SUNDAY AFTN. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... A LOW PRESSURE SYSTEM WILL TRACK SLOWLY FROM THE CENTRAL MS VALLEY TO THE EASTERN GREAT LAKES MONDAY NIGHT THROUGH WEDNESDAY. THIS SYSTEM WILL BRING THE LIKELIHOOD OF SHOWERS MONDAY NIGHT THROUGH LATE TUESDAY...WITH SCATTERED SHOWERS REMAINING OVER THE REGION WEDNESDAY. A HIGH PRESSURE RIDGE WILL BUILD IN FROM THE WEST THURSDAY...BRINGING DRY WEATHER FOR LATE IN THE WEEK. TEMPERATURES ARE EXPECTED TO BE NEAR NORMAL FOR THE EXTENDED PERIOD. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... A COLD FRONT WILL PUSH SOUTHEAST OF THE REGION BY THIS EVENING. WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO FORM MAINLY SOUTH OF A KZZV-KPIT-KIDI LINE THROUGH AROUND 23Z. BRIEF MVFR/IFR RESTRICTIONS ARE POSSIBLE IN STORMS...OTHERWISE SCATTERED TO BROKEN CUMULUS AROUND 4000 FEET WILL PREVAIL THROUGH 00Z. WEST SURFACE WINDS WILL GUST TO 25KT AT TIMES...THEN DIMINISH TO 5-8KT AFTER 01Z. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
Hazardous weather outlook, May 14, 1:33 PM EST, 33 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 233 PM EDT FRI MAY 14 2010 OHZ039>041-048>050-057-058-PAZ007>009-013>016-020-022-WVZ001>003- 151845- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH- MUSKINGUM-GUERNSEY-MERCER-VENANGO-FOREST-LAWRENCE-BUTLER-CLARION- JEFFERSON PA-BEAVER-ARMSTRONG-HANCOCK-BROOKE-OHIO- 233 PM EDT FRI MAY 14 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. 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. MDZ001-OHZ059-068-069-PAZ021-023-029>032-WVZ004-012-021>023-041- 151845- GARRETT-BELMONT-NOBLE-MONROE-ALLEGHENY-INDIANA-WASHINGTON- WESTMORELAND-GREENE-FAYETTE-MARSHALL-WETZEL-MARION-MONONGALIA- PRESTON-TUCKER- 233 PM EDT FRI MAY 14 2010 ...SEVERE THUNDERSTORM WATCH 173 IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST CENTRAL OHIO...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. 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
Local storm report, May 14, 8:42 AM EST, 5 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
942 AM EDT FRI MAY 14 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 AM TSTM WND DMG SHARON 41.23N 80.50W
05/14/2010 MERCER PA EMERGENCY MNGR
NUMEROUS TREES REPORTED DOWN IN THE SHARON, FARRELL AND
HERMITAGE AREAS.
0535 AM TSTM WND DMG OIL CITY 41.43N 79.70W
05/14/2010 VENANGO PA EMERGENCY MNGR
LGE TREES DOWN ON CARS AT CAR DEALERSHIP AT RIVERSIDE
DRIVE AND US ROUTE 62 IN CRANBERRY TOWNSHIP.
&&Special weather statement, May 14, 1:22 PM EST, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 222 PM EDT FRI MAY 14 2010 PAZ021>023-030-141915- ALLEGHENY PA-ARMSTRONG PA-INDIANA PA-WESTMORELAND PA- 222 PM EDT FRI MAY 14 2010 ...THUNDERSTORMS... THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES... ARMSTRONG...ALLEGHENY...WESTMORELAND AND INDIANA... AT 218 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED STRONG THUNDERSTORMS OVER OAKDALE...MOVING EAST AT 50 MPH. SOME OF THESE STORMS WILL BE ACCOMPANIED BY DANGEROUS LIGHTNING... SMALL HAIL...WIND GUSTS TO 50 MPH AND HEAVY DOWNPOURS THAT MAY CAUSE PONDING OF WATER ON ROADS. SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE... SEWICKLEY... OAKDALE... CARNEGIE... FRANKLIN PARK... MCKEES ROCKS... PERRYSVILLE... NORTH SIDE... DOWNTOWN PITTSBURGH... SOUTH SIDE... WILKINSBURG... WEST MIFFLIN... FOX CHAPEL... 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 14, 1:41 PM EST, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 241 PM EDT FRI MAY 14 2010 OHZ050-PAZ021-029-WVZ002-003-141945- ALLEGHENY PA-BROOKE WV-JEFFERSON OH-OHIO WV-WASHINGTON PA- 241 PM EDT FRI MAY 14 2010 ...THUNDERSTORMS... THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES... JEFFERSON...WASHINGTON...ALLEGHENY...OHIO AND BROOKE... AT 239 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH INDICATED STRONG THUNDERSTORMS 3 MILES WEST OF DILLONVALE...OR ABOUT 2 MILES SOUTHEAST OF ADENA...MOVING EAST AT 65 MPH. SOME OF THESE STORMS WILL BE ACCOMPANIED BY DANGEROUS LIGHTNING... SMALL HAIL...WIND GUSTS TO 50 MPH...AND HEAVY DOWNPOURS THAT MAY CAUSE PONDING OF WATER ON ROADS. SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE... NEWELL... DILLONVALE... SMITHFIELD... JUG RUN... TILTONSVILLE... RAYLAND... WINDSOR HEIGHTS... BRILLIANT... WELLSBURG... WEST LIBERTY... BETHANY... FRANKLIN... 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 900 PM EDT FRIDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND SOUTHWESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA. &&
The radar
The Pittsburgh radar (KPBZ), 55 km away, was scanning. The volume nearest the first event began at 19:04 UTC.
Event by event
12 hail, 1 thunderstorm wind. Local standard time, as filed.
Hail, Westmoreland
- When
- May 14, 2:24 PM EST
- Where
- Westmoreland County, 0.53 mi W of Loyalhanna
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 40.320, -79.390
Hail, Westmoreland
- When
- May 14, 2:26 PM EST
- Where
- Westmoreland County, 0.53 mi SSW of New Alexandria
- Measured
- 1.25 in hail
- Reported by
- Trained Spotter
- Coordinates
- 40.393, -79.425
Hail, Westmoreland
- When
- May 14, 2:26 PM EST
- Where
- Westmoreland County, 0.53 mi E of Hannastown
- Measured
- 1.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 40.350, -79.490
Hail, Westmoreland
- When
- May 14, 2:29 PM EST
- Where
- Westmoreland County, 0.53 mi W of Greenwald
- Measured
- 1.75 in hail
- Reported by
- Public
- Coordinates
- 40.370, -79.460
Thunderstorm Wind, Westmoreland
- When
- May 14, 2:40 PM EST
- Where
- Westmoreland County, Derry
- Measured
- 50 kt (58 mph) estimated gust
- Property damage
- $15,000
- Reported by
- Trained Spotter
- Coordinates
- 40.330, -79.300
A trained spotter reported trees down in Derry.
Hail, Allegheny
- When
- May 14, 2:44 PM EST
- Where
- Allegheny County, 0.69 mi N of Homestead
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 40.390, -79.950
Hail, Allegheny
- When
- May 14, 2:44 PM EST
- Where
- Allegheny County, 0.87 mi NE of Turtle Creek
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 40.429, -79.808
Hail, Westmoreland
- When
- May 14, 2:48 PM EST
- Where
- Westmoreland County, Derry
- Measured
- 0.88 in hail
- Reported by
- Public
- Coordinates
- 40.330, -79.300
Hail, Westmoreland
- When
- May 14, 2:48 PM EST
- Where
- Westmoreland County, 0.69 mi S of West Newton
- Measured
- 0.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 40.210, -79.770
Hail, Westmoreland
- When
- May 14, 3:07 PM EST
- Where
- Westmoreland County, 0.69 mi S of Loyalhanna
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 40.310, -79.380
Hail, Westmoreland
- When
- May 14, 3:13 PM EST
- Where
- Westmoreland County, 0.87 mi SE of Hutchinson
- Measured
- 0.88 in hail
- Reported by
- Public
- Coordinates
- 40.220, -79.720
Hail, Westmoreland
- When
- May 14, 3:14 PM EST
- Where
- Westmoreland County, 0.87 mi NE of Central
- Measured
- 0.75 in hail
- Reported by
- Public
- Coordinates
- 40.190, -79.570
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flash Flooding in Texas, May 14, 2010
- Flash Flooding in Texas, May 14 to 15, 2010
- Hail and Damaging Wind in Maryland, May 14, 2010
- Flash Flooding and Hail in Texas, May 14 to 15, 2010
- Hail and Damaging Winds in Pennsylvania, May 14, 2010
- Flash Flooding and Hail in Tennessee, May 14, 2010
- Hail and Damaging Winds in Ohio, May 14, 2010
- Flash Flooding and Hail in Texas, May 14 to 15, 2010
- Hail and Damaging Winds in New Jersey, May 14, 2010
- Hail and Damaging Winds in Pennsylvania, May 14, 2010
- Lightning Strike in Arkansas, May 14, 2010
- Flash Flood and Hail in Kentucky, May 14, 2010
More
Every storm in Pennsylvania in 2010Every state in 2010This day in weather historyWarnings in Pennsylvania, May 2010
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 221798, 221799, 221800, 221801, 221802, 221807, 221803, 221804, 221808, 221809, 221812, 221811, 221810.