Flooding and Hail in Pennsylvania, June 2 to 3, 2010

Name: Flooding and Hail in Pennsylvania, June 2 to 3, 2010
Start: 2010-06-02T13:50
End: 2010-06-03T03:00
Location: Pennsylvania

June 2 to 3, 2010 · NWS PBZ · 16 events in 3 counties and zones

As a cold front moved southeast across the upper Ohio Valley, scattered severe thunderstorms developed across eastern Ohio, western Pennsylvania, and northern West Virginia. A supercell thunderstorm produced an EF1 tornado in Carroll and Jefferson counties in Ohio, with numerous reports of wind damage and hail up to golf ball size elsewhere.

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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $275,000
Crop damage: None recorded
Events: 16

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.

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 Jun 2, 8:42 AM EST, 5 hours 8 minutes earlier.

Area forecast discussion, Jun 2, 8:42 AM EST, 5 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
942 AM EDT WED JUN 2 2010

.SYNOPSIS...
A SERIES OF LOW PRESSURE SYSTEMS WILL PROVIDE FOR UNSETTLED
WEATHER FROM THIS AFTERNOON THROUGH THIS WEEKEND.

&&

.NEAR TERM /THROUGH TONIGHT/...
UPDATE TO INCREASE CLOUDS TODAY AS DEBRIS FROM WEAKENING MCS IS
HOLDING TOGETHER.

OTHERWISE...THE REGION WILL BE IN A DESTABILIZING AIRMASS INTO
THE AFTERNOON WITH CU BUILDING. FORECAST SOUNDING ANALYSIS POINTS
TO ISOLATED TO SCATTERED STORMS DEVELOPING IN THE WEST BY
16Z...AND CLOSER TO 20Z EAST. WITH HIGH CAPES...AND INCREASING
MID LEVEL WINDS...ANTICIPATE THE 18Z TO 00Z TIMEFRAME LOOKS MOST
FAVORABLE FOR SEVERE STORMS...PERHAPS A LITTLE EARLIER IN
SOUTHEAST OHIO. RAIN SHOULD HOLD OFF LONG ENOUGH FOR TEMPS TO ONCE
AGAIN CLIMB ABOVE NORMAL TODAY...THEN DROP OFF GENERALLY INTO THE
60 TO 65 RANGE TONIGHT. MAX TEMPS COULD BE BUFFERED A LITTLE
TODAY...DEPENDING ON HOW MUCH RESIDUAL CLOUDS PASS OVER FROM
MIDWEST MCS.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
MODELS INDICATE A FAIRLY RAPIDLY MOVING WAVE THURSDAY...FOR
ANOTHER ROUND OF SHOWERS/STORMS. A WEAK HIGH PRESSURE RIDGE THEN
BUILDS IN FOR THURSDAY NIGHT INTO FRIDAY. WITH EXPECTED CLOUD
COVER AND RAIN THURSDAY...MAX TEMPS SHOULD BE LIMITED TO NEAR
NORMAL OR JUST BELOW. TEMPS SHOULD BE NEAR OR JUST ABOVE NORMAL
FOR FRIDAY.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
THE PERIOD BEGINS DRY WITH GFS/NAM AGREEMENT IN A ZONAL FLOW
FRIDAY NIGHT. THERE IS LITTLE MODEL AGREEMENT WITH A BROAD TROUGH
CROSSING THE REGION THIS WEEKEND. THUS...FORECAST AFTER THIS POINT
IS CLOSEST TO THE HPC/ECMWF SOLUTION WITH CHANCE POPS WITH
CONVECTION THROUGH SUNDAY NIGHT. TEMPERATURES OVER THE WEEKEND
WILL BE NEAR NORMAL VALUES ACROSS THE AREA. WITH THE TROUGH
ADVECTING EAST OF THE AREA MONDAY...SCHC POPS ARE FORECAST WITH
THE AREA STILL IN A NORTHWESTERLY LOW-LEVEL FLOW. IN THIS COOLER
FLOW...TEMPERATURES ARE FORECAST AROUND 5 DEGREES BELOW NORMAL ON
MONDAY.

&&

.AVIATION /14Z WEDNESDAY THROUGH SUNDAY/...
A LINE OF CONVECTION ACROSS OHIO WILL REDEVELOP AS IT MOVES INTO
EASTERN OHIO THIS AFTERNOON WITH STRONG TO SEVERE STORMS
POSSIBLE. AS THE LINE PROGRESSES EASTWARD...SHOWERS AND STORMS
WILL FIRST REACH KZZV AT 16Z...REACHING A KHLG-KFKL LINE BY 18Z
AND KMGW-KDUJ BY 20Z. TEMPO GROUPS ARE FORECAST TIMING THE SHOWERS
AND STORMS PASSAGE. WITH THE STORMS...THERE IS THE POSSIBILITY OF
HAIL AND GUSTY WINDS.

BEHIND THE INITIAL CONVECTION THIS AFTERNOON...ANOTHER ROUND OF
SCATTERED THUNDERSTORMS WITH POTENTIAL RESTRICTIONS WILL BEGIN
TO MOVE EASTWARD ACROSS THE UPPER OHIO VALLEY LATE DURING THE
EVENING. A SLIGHT RISK OF DAMAGING WIND AND HAIL WITH THE STORMS
CONTINUES TONIGHT.

SHOWERS AND THUNDERSTORMS WILL THEN BE POSSIBLE THROUGH THURSDAY
NIGHT ACROSS THE UPPER OHIO VALLEY UNTIL THE NEXT COLD FRONT
PASSAGE.

VFR CONDITIONS WILL RETURN FRIDAY INTO FRIDAY NIGHT AS HIGH PRESSURE
BUILDS IN FROM THE NORTHWEST. SHOWERS AND THUNDERSTORMS WITH
RESTRICTIONS WILL BE POSSIBLE OVER THE WEEKEND AS AN UPPER LEVEL
DISTURBANCE CROSSES THE REGION.

&&

.EQUIPMENT...
THE WSR 88D AT PITTSBURGH...KPBZ...IS OPERATIONAL BUT IN DEGRADED
MODE DUE TO LOW POWER OUTPUT. ADDITIONAL PARTS ARE ON ORDER AND
MORE MAINTENANCE WILL BE COMPLETED DURING THE NEXT COUPLE OF DAYS.

ALTERNATE RADARS INCLUDE KRLX...KILN...KCLE...AND KCCX.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

Hazardous weather outlook, Jun 2, 12:47 PM EST, 1 hour 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
147 PM EDT WED JUN 2 2010

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029>032-WVZ001>004-031200-
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-
147 PM EDT WED JUN 2 2010

...SEVERE THUNDERSTORM WATCH 245 IN EFFECT UNTIL 8 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...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...THURSDAY THROUGH TUESDAY.

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THURSDAY WITH
DAMAGING WINDS AND HAIL THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MDZ001-WVZ012-021>023-041-031200-
GARRETT-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER-
147 PM EDT WED JUN 2 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND AND NORTHERN
WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON
THROUGH THIS EVENING. THE MAIN HAZARDS WILL BE LARGE HAIL AND
DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THURSDAY WITH
DAMAGING WINDS AND HAIL THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Jun 2, 11:41 AM EST, 2 hours 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1241 PM EDT WED JUN 2 2010

OHZ048-021730-
COSHOCTON OH-
1241 PM EDT WED JUN 2 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTY...
COSHOCTON...

AT 1235 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 12 MILES NORTHWEST OF NELLIE...OR
ABOUT 11 MILES NORTHWEST OF NEW GUILFORD...MOVING EAST AT 25 MPH.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  NELLIE...             WARSAW...             BLISSFIELD...
  LAYLAND...

THIS STORM IS CAPABLE OF PRODUCING WINDS GUSTING UP TO 50 MPH ALONG
WITH SMALL HAIL. 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...

THERE IS INTENSE LIGHTNING WITH THIS STORM. IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE.
WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING
TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

&&

LAT...LON 4045 8219 4046 8217 4046 8210 4045 8175
      4035 8174 4033 8219

WOODRUM

Local storm report, Jun 2, 1:10 PM EST, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
210 PM EDT WED JUN 02 2010

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

0146 PM     HAIL             DOVER                   40.53N 81.48W
06/02/2010  E0.75 INCH       TUSCARAWAS         OH   PUBLIC

            PUBLIC REPORTED PENNY 0.75 INCH HAIL IN DOVER OH.

&&

Local storm report, Jun 2, 1:25 PM EST, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
225 PM EDT WED JUN 02 2010

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

0202 PM     TSTM WND DMG     3 SE NEW PHILADELPHIA   40.46N 81.40W
06/02/2010                   TUSCARAWAS         OH   LAW ENFORCEMENT

            TREES WERE REPORTED DOWN 3 MILES SOUTHEAST OF NEW
            PHILADELPHIA OH BY LAW ENFORCEMENT.

&&

Local storm report, Jun 2, 1:29 PM EST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
229 PM EDT WED JUN 02 2010

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

0202 PM     HAIL             ESE SHERRODSVILLE       40.49N 81.24W
06/02/2010  E1.00 INCH       CARROLL            OH   TRAINED SPOTTER

            QUARTER SIZED HAIL REPORTED BY A TRAINED SPOTTER.
            NUMEROUS TREES AND POWER LINES WERE REPORTED DOWN.

&&

Local storm report, Jun 2, 1:49 PM EST, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
249 PM EDT WED JUN 02 2010

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

0240 PM     HAIL             6 NE BOWERSTON          40.49N 81.11W
06/02/2010  E0.88 INCH       CARROLL            OH   TRAINED SPOTTER

            NICKEL SIZED HAIL AND SMALL TREES DOWN IN PERRYSVILLE
            OHIO.

&&

The radar

The Pittsburgh radar (KPBZ), 11 km away, was scanning. The volume nearest the first event began at 18:49 UTC.

Open the radar archive at this moment

Event by event

8 hail, 6 thunderstorm wind, 2 flood. Local standard time, as filed.

Hail, Beaver

When: June 2, 1:50 PM EST
Where: Beaver County, 3.47 mi SW of Bocktown
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 40.510, -80.340

Thunderstorm Wind, Allegheny

When: June 2, 3:30 PM EST
Where: Allegheny County, 1.5 mi W of Pittsburgh
Measured: 50 kt (58 mph) estimated gust
Property damage: $75,000
Reported by: Law Enforcement
Coordinates: 40.430, -80.008

Law enforcement reported large trees down and spotty roof damage.

Hail, Beaver

When: June 2, 5:45 PM EST
Where: Beaver County, 3.95 mi SE of Harshaville
Measured: 1.25 in hail
Reported by: Public
Coordinates: 40.510, -80.366

Hail, Allegheny

When: June 2, 6:07 PM EST
Where: Allegheny County, 0.53 mi W of Oakdale
Measured: 0.88 in hail
Reported by: Public
Coordinates: 40.400, -80.190

Thunderstorm Wind, Beaver

When: June 2, 6:08 PM EST
Where: Beaver County, 2.14 mi SSW of Hookstown
Measured: 50 kt (58 mph) estimated gust
Property damage: $25,000
Reported by: Public
Coordinates: 40.571, -80.496

The public reported large trees down south of Hookstown.

Hail, Allegheny

When: June 2, 6:10 PM EST
Where: Allegheny County, 1.05 mi E of Cliff Mine
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 40.450, -80.180

Hail, Allegheny

When: June 2, 6:10 PM EST
Where: Allegheny County, 0.53 mi E of Imperial
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 40.450, -80.240

Hail, Allegheny

When: June 2, 6:31 PM EST
Where: Allegheny County, 1.72 mi WSW of Gayly
Measured: 1 in hail
Reported by: Amateur Radio
Coordinates: 40.440, -80.160

Hail, Allegheny

When: June 2, 6:38 PM EST
Where: Allegheny County, 1.26 mi ESE of East Carnegie
Measured: 1 in hail
Reported by: Amateur Radio
Coordinates: 40.410, -80.050

Thunderstorm Wind, Allegheny

When: June 2, 6:55 PM EST
Where: Allegheny County, 1.26 mi WSW of Option
Measured: 50 kt (58 mph) estimated gust
Property damage: $25,000
Reported by: Amateur Radio
Coordinates: 40.420, -80.000

Amateur radio reported trees down near Mt Oliver.

Thunderstorm Wind, Allegheny

When: June 2, 6:58 PM EST
Where: Allegheny County, 1.26 mi ESE of Munhall
Measured: 50 kt (58 mph) estimated gust
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 40.390, -79.900

A trained spotter reported numerous trees down in Munhall.

Thunderstorm Wind, Allegheny

When: June 2, 7:15 PM EST
Where: Allegheny County, 0.87 mi SE of Riverton
Measured: 50 kt (58 mph) estimated gust
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 40.340, -79.840

A trained spotter reported trees down in Mckeesport.

Hail, Beaver

When: June 2, 9:01 PM EST
Where: Beaver County, New Brighton
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 40.750, -80.320

Thunderstorm Wind, Beaver

When: June 2, 9:03 PM EST
Where: Beaver County, 1.38 mi S of Homewood
Measured: 50 kt (58 mph) estimated gust
Property damage: $50,000
Reported by: Law Enforcement
Coordinates: 40.800, -80.320

Law enforcement reported trees down north of Beaver Falls.

Flood, Beaver

When: June 2, 11:00 PM EST to June 3, 3:00 AM EST
Where: Beaver County, 1.47 mi SSW of Hookstown to 1.23 mi S of Hookstown
Cause: Heavy Rain
Property damage: $25,000
Reported by: County Official
Coordinates: 40.581, -80.493

A county official reported U.S. 30 closed between SR 168 and Long Road due to flooding.

Flood, Butler

When: June 2, 11:00 PM EST to June 3, 3:00 AM EST
Where: Butler County, 0.91 mi N of Butler Jct to 0.96 mi NNW of Butler Jct
Cause: Heavy Rain
Property damage: $25,000
Reported by: County Official
Coordinates: 40.883, -79.873

A county official reported SR 38 flooded.

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.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 2010 Every state in 2010 This day in weather history Warnings in Pennsylvania, June 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: 230190, 230202, 230192, 230193, 230204, 230194, 230196, 230197, 230198, 230205, 230206, 230207, 230200, 230208, 230188, 230189.