Scattered severe thunderstorms developed across eastern Ohio, western Pennsylvania, and northern West Virginia ahead of an approching cold front.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS PBZ wrote it up.
Scattered severe thunderstorms developed across eastern Ohio, western Pennsylvania, and northern West Virginia ahead of an approching cold front.
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 Jun 23, 12:54 PM EST, 4 hours 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 154 PM EDT WED JUN 23 2010 .SYNOPSIS... A FRONTAL BOUNDARY MOVING ACROSS THE OHIO VALLEY WILL BE THE FOCUS FOR SHOWERS AND THUNDERSTORMS THROUGH THURSDAY. THE FRONT WILL PUSH SOUTH BY THURSDAY NIGHT WITH A DRY START TO THE WEEKEND. && .NEAR TERM /THROUGH THURSDAY/... WARM/MOIST FRONT EXTENDING FROM GREAT LAKES TROUGH WILL BE PULLED NORTHWARD THIS EVENING AND ISOLATED TO SCATTERED THUNDERSTORM FORMATION WAS ONGOING AS OF ISSUANCE TIME. INITIAL FOCUS WAS FOR THE EAST CENTRAL OHIO, AND EXTREME NORTHWESTERN PA ZONES AS THE SHORTWAVE WHICH IS SUPPORTING TODAYS GREAT LAKES MCS HAS MADE SUFFICIENT EASTWARD PROGRESS TO ERODE THE CAP AND INCREASE DEEP LAYER SHEAR FOR A MODERATE THREAT OF SEVERE WEATHER IN THE VERY MOIST AND UNSTABLE ATMOSPHERE. THE FULL ARRAY OF SEVERE WEATHER IS POSSIBLE INCLUDING THE ISOLATED TORNADO, BUT THE PRIMARY THREAT WILL COME FROM DAMAGING WIND GUSTS. THE CHANCE OF THUNDERSTORMS WILL FURTHER INCREASE TONIGHT AS A MESOSCALE CONVECTIVE COMPLEX REFORMS IN THE CENTRAL GREAT LAKES AND MOVES SOUTHEASTWARD ACROSS THE UPPER OHIO VALLEY. A COLD FRONT, CURRENTLY TIMED FOR A MORNING, TO EARLY AFTERNOON PASSAGE SHOULD END RAIN CHANCES FOR THE CLOSE OF THE WORK WEEK. && .SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/... SURFACE HIGH PRESSURE WILL BUILD UNDER NORTHWEST FLOW AND PROVIDE A DRY THURSDAY NIGHT AND FRIDAY. HOWEVER, TRAILING AIRMASS IS NOT PROGGED TO REPRESENT A DRAMATIC CHANGE AND TEMPERATURE FORECAST WILL BE CLOSER TO, BUT STILL ABOVE NORMAL. SHORTWAVE IN NORTHWEST FLOW IS PROGGED TO CROSS THE NORTHEASTERN U.S. ON SATURDAY. AS BOUNDARY LAYER MOISTURE SHOULD BE, OR SHOULD HAVE SUFFICIENT TIME TO RECOVER WITH THE ADVANCE OF THAT SYSTEM, WILL INTRODUCE A SLIGHT, TO CHANCE THUNDERSTORM PROBABILITY FOR THE REGION ON SATURDAY, ALTHOUGH CONFIDENCE IN TIMING MUST REMAIN MINIMAL IN THAT FLOW PATTERN. SATURDAY TEMPERATURES ARE PROJECTED 5 TO 10 DEGREES ABOVE NORMAL USING MODERATED GUIDANCE. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... THE PROGNOSIS FOR THE LONG TERM PERIOD FEATURES THE DEVELOPMENT OF AN EAST COAST TROUGH AS DEPICTED VIA GFS/ECMWF MODELS. FORECAST WILL THUS INCLUDE EARLY WEEK CHANCE PRECIP PROBABILITIES FOR THE ADVANCE AND IMMEDIATE PASSAGE OF THE SURFACE FRONT AND TROUGH AXIS, FOLLOWED BY A DRYING TREND INTO MIDWEEK. HAVE ASSUMED A SLIGHTLY LESS AMPLIFIED SCENARIO AND ACCORDINGLY TWEAKED HPC GUIDANCE TEMPERATURES AND MOISTURE PROG UPWARD A BIT FOR THE LAST COUPLE DAYS OF THE PERIOD. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... WIDELY SCATTERED CONVECTION BEGINNING TO FORM NEAR SURFACE BOUNDARY OVER CENTRAL OH EARLY THIS AFTERNOON WHILE LEADING EDGE OF CONVECTIVE COMPLEX PUSHES ACROSS NORTHERN OH. ATMOSPHERE WILL CONTINUE TO DESTABILIZE THROUGH THE AFTERNOON. GREATEST PROBABILITY OF THUNDERSTORMS EXPECTED TO BE IN 22Z-04Z TIME FRAME AND INCLUDED TEMPO GROUPS FOR ALL TAFS FOR MVFR RESTRICTIONS IN STORMS. COLD FRONT WILL PUSH THROUGH THE REGION 10Z-14Z THURSDAY WITH ANOTHER LINE OF CONVECTION AND MVFR RESTRICTIONS AHEAD OF AND ALONG FRONTAL BOUNDARY. CONDITIONS SHOULD IMPROVE TO VFR BY MIDDAY THURSDAY. HIGH PRESSURE ON FRIDAY AND SATURDAY SHOULD BRING THE RETURN OF GENERALLY VFR WEATHER. THE NEXT APPROACHING LOW PRESSURE SYSTEM WILL PUSH A WARM FRONT THROUGH THE UPPER OHIO VALLEY REGION SUNDAY WITH A COLD FRONTAL PASSAGE ON MONDAY. THIS SYSTEM WILL BRING SCATTERED SHOWERS AND STORMS WITH POSSIBLE MVFR/IFR RESTRICTIONS. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && 15/14
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 435 PM EDT WED JUN 23 2010 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020-WVZ001- 242045- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH- MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-FOREST- LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-HANCOCK- 435 PM EDT WED JUN 23 2010 ...SEVERE THUNDERSTORM WATCH 395 IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...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...THURSDAY THROUGH TUESDAY. 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-PAZ031-032-WVZ004-012-021>023-041-242045- GARRETT-GREENE-FAYETTE-MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON- TUCKER- 435 PM EDT WED JUN 23 2010 ...SEVERE THUNDERSTORM WATCH 395 IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...SOUTHWEST PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...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...THURSDAY THROUGH TUESDAY. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THURSDAY. THE PRIMARY SEVERE THREAT WILL COME FROM DAMAGING WIND. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. PAZ021>023-029-030-WVZ002-003-242045- ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-BROOKE-OHIO- 435 PM EDT WED JUN 23 2010 ...SEVERE THUNDERSTORM WATCH 395 IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...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...THURSDAY THROUGH TUESDAY. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THURSDAY. THE PRIMARY SEVERE THREAT WILL COME FROM DAMAGING WIND. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
521 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0510 PM TSTM WND DMG 1 SW FAIRMONT 39.47N 80.16W
06/23/2010 MARION WV TRAINED SPOTTER
SEVERAL TREES DOWN
&&
RCCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
529 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0520 PM TSTM WND DMG COLUMBIANA 40.89N 80.69W
06/23/2010 COLUMBIANA OH LAW ENFORCEMENT
TREES DOWN COUNTY WIDE
&&
RCCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
540 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0525 PM TSTM WND DMG 5 W MORGANTOWN 39.64N 80.04W
06/23/2010 MONONGALIA WV LAW ENFORCEMENT
MULTIPLE TREES DOWN
&&
RCCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
600 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0420 PM TSTM WND DMG BRIDGEPORT 40.07N 80.75W
06/23/2010 BELMONT OH LAW ENFORCEMENT
SEVERAL TREES DOWN ALONG SR 250 IN BRIDGEPORT
&&
RCCSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
602 PM EDT WED JUN 23 2010
MDZ001-PAZ032-WVZ021>023-232300-
FAYETTE PA-GARRETT MD-MARION WV-MONONGALIA WV-PRESTON WV-
602 PM EDT WED JUN 23 2010
...THUNDERSTORMS...
THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
GARRETT...FAYETTE...MARION...PRESTON AND MONONGALIA...
AT 555 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM LAUREL RUN
TO 3 MILES SOUTHWEST OF BROWNS CHAPEL...MOVING EAST AT 30 MPH. THESE
STORMS COULD PRODUCE GUSTY WINDS TO 45 MPH AND HAIL.
SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
NEEL... MASONTOWN... LAUREL RUN...
BRUCETON MILLS... BROWNS CHAPEL... GLADESVILLE...
CLIFTON MILLS... VALLEY POINT... NEWBURG...
HAZELTON... KINGWOOD... TUNNELTON...
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
WEDNESDAY EVENING FOR WESTERN MARYLAND AND EAST CENTRAL OHIO AND
WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.
&&
LAT...LON 3963 7897 3941 7914 3941 7916 3939 7916
3934 7926 3929 7930 3929 7935 3924 7941
3937 7992 3944 7991 3945 7993 3944 7997
3940 8003 3942 8011 3972 7968 3972 7893PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
617 PM EDT WED JUN 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM TSTM WND DMG 3 N KIMBOLTON 40.20N 81.57W
06/23/2010 GUERNSEY OH LAW ENFORCEMENT
TREES AND POWER LINES DOWN
&&
RCCThe national radar mosaic for the moment the first event began.
4 thunderstorm wind. Local standard time, as filed.
A trained spotter reported trees down northeast of Gibsonia.
The public reported trees down in Sarver.
The public reported trees down in Saltsburg.
The public reported numerous large trees uprooted or topped off near Armagh.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2010Every state in 2010This day in weather historyWarnings in Pennsylvania, June 2010
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: 230664, 230665, 230666, 230667.