Thunderstorm Wind, Mercer
- When
- July 4, 1:05 PM EST
- Where
- Mercer County, 3 mi W of Greenville
- Measured
- 50 kt (58 mph) estimated gust
- Property damage
- $1,000
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 41.420, -80.433
Large trees down.
Damaging Wind in Pennsylvania, July 4, 2003
1 thunderstorm wind, as filed by the National Weather Service.
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
- $1,000
- Crop damage
- None recorded
- Events
- 1
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 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 Jul 4, 10:43 AM EST, 2 hours 22 minutes earlier.
Area forecast discussion, Jul 4, 10:43 AM EST, 2 hours 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 1140 EDT FRI JUL 4 2003 UPDATED ZONE FORECASTS PER SEVERE THUNDERSTORM WATCH. RECENT RADAR DATA SHOWS LINEAR MCS NEAR OHIO-INDIANA BORDER, MOVING EAST-SOUTHEAST AT 40 KNOTS. THIS MOVEMENT, COUPLED WITH RUC SHOWING INCREASED INSTABILITY PER DEW POINTS AROUND 70, WILL PUT STORMS AS FAR AS THE OHIO-PENNSYLVANIA BORDER BY 4-5 PM. SO, ADDED WORDING ABOUT STRONG WIND GUSTS AND HEAVY RAIN WITH STORMS LATE THIS AFTERNOON. ...REST UNCHANGED. ...GIORDANO .PBZ... MD...NONE. OH...SEVERE THUNDERSTORM WATCH FOR TODAY FOR ZONES OHZ039>041. PA...NONE. WV...NONE. LAG
Hazardous weather outlook, Jul 4, 4:50 AM EST, 8 hours 15 minutes before
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-031150- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 550 AM EDT FRI JUL 4 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN PENNSYLVANIA EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND. .DAY ONE...TODAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS THE NORTHERN HALF OF WESTERN PENNSYLVANIA...MAINLY NORTH OF PITTSBURGH...AND IN NORTHERN PORTIONS OF EAST CENTRAL OHIO FROM COSHOCTON TO CARROLLTON TO EAST PALESTINE. THE GREATEST THREAT FROM THESE STORMS WILL BE STRONG DAMAGING WINDS AND HEAVY RAIN. DANGEROUS LIGHTNING AND HAIL ARE ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS SATURDAY AND SATURDAY NIGHT...MAINLY SOUTH OF INTERSTATE 80 IN WESTERN PENNSYLVANIA...AND FOR ALL OF EAST CENTRAL OHIO...EXTREME NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND. AGAIN THE MAIN THREAT FROM THESE STORMS WILL BE STRONG DAMAGING WINDS AND HEAVY RAIN. ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS WILL AFFECT THE REGION AGAIN TUESDAY AS A COLD FRONT MOVES INTO THE AREA. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY FOR TONIGHT.
In the hours before
Special weather statement, Jul 4, 7:36 AM EST, 5 hours 29 minutes before
MDZ001-OHZ048>050-057>059-068-069-PAZ009-014>016-020>023-029>032- WVZ001>004-012-021>023-041-041530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 836 AM EDT FRI JUL 4 2003 ...THUNDERSTORMS MOVING ACROSS THE REGION... THUNDERSTORMS ARE DEVELOPING AND MOVING ACROSS THE REGION THIS HOLIDAY MORNING. THE STRONGEST ACTIVITY IS MOVING THROUGH EASTERN OHIO INTO WEST CENTRAL PENNSYLVANIA. ADDITIONAL THUNDERSTORMS ARE DEVELOPING NEAR THE RIDGES. THUNDERSTORMS MAY DEVELOP AT ANY TIME OVER THE ENTIRE REGION TODAY. IF YOUR HOLIDAY PLANS INCLUDE OUTDOOR ACTIVITIES...PLEASE BE PREPARED FOR THE POSSIBILITY OF RAPIDLY DETERIORATING CONDITIONS. IN ADDITION TO HEAVY RAINFALL WHICH MAY APPROACH ONE INCH IN AN HOURS TIME...GUSTY WINDS TO 35 MPH...DANGEROUS LIGHTNING...AND SMALL HAIL ARE ALSO POSSIBLE. BE ESPECIALLY CAREFUL IF YOU ARE DRIVING AS THERE MAY BE PONDING OF WATER ON THE ROADWAYS AND REDUCED VISIBILITY IN HEAVY RAIN. IF YOU EXPERIENCE HIGH WATER OR HAIL...PLEASE REPORT THESE CONDITIONS BY CALLING 1-877-633-6772. TYBURSKI
Special weather statement, Jul 4, 7:59 AM EST, 5 hours 6 minutes before
OHZ039>041-PAZ007-008-013-041530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 859 AM EDT FRI JUL 4 2003 ...THUNDERSTORMS MOVING ACROSS THE REGION... THUNDERSTORMS ARE DEVELOPING AND MOVING ACROSS THE REGION THIS HOLIDAY MORNING. THE STRONGEST ACTIVITY IS MOVING THROUGH EASTERN OHIO INTO WEST CENTRAL PENNSYLVANIA. THUNDERSTORMS MAY DEVELOP AT ANY TIME OVER THE ENTIRE REGION TODAY. IF YOUR HOLIDAY PLANS INCLUDE OUTDOOR ACTIVITIES...PLEASE BE PREPARED FOR THE POSSIBILITY OF RAPIDLY DETERIORATING CONDITIONS. IN ADDITION TO HEAVY RAINFALL WHICH MAY APPROACH ONE INCH IN AN HOURS TIME...GUSTY WINDS TO 35 MPH...DANGEROUS LIGHTNING...AND SMALL HAIL ARE ALSO POSSIBLE. BE ESPECIALLY CAREFUL IF YOU ARE DRIVING AS THERE MAY BE PONDING OF WATER ON THE ROADWAYS AND REDUCED VISIBILITY IN HEAVY RAIN. IF YOU EXPERIENCE HIGH WATER OR HAIL...PLEASE REPORT THESE CONDITIONS BY CALLING 1-877-633-6772. TYBURSKI
Special weather statement, Jul 4, 10:09 AM EST, 2 hours 56 minutes before
OHZ039>041-042000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1109 AM EDT FRI JUL 4 2003 SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 400 PM EDT FRIDAY AFTERNOON FOR THE FOLLOWING COUNTIES... IN OHIO... CARROLL COLUMBIANA TUSCARAWAS
Special weather statement, Jul 4, 10:41 AM EST, 2 hours 24 minutes before
PAZ029-031-032-WVZ003-004-041645- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1141 AM EDT FRI JUL 4 2003 ...THUNDERSTORMS MOVING ACROSS THE REGION... THUNDERSTORMS ARE DEVELOPING AND MOVING ACROSS THE REGION THIS HOLIDAY. THE STRONGEST ACTIVITY IS MOVING THROUGH EASTERN OHIO INTO THE SOUTHWEST CORNER OF PENNSYLVANIA. THUNDERSTORMS MAY DEVELOP AT ANY TIME OVER THE ENTIRE REGION TODAY. IF YOUR HOLIDAY PLANS INCLUDE OUTDOOR ACTIVITIES...PLEASE BE PREPARED FOR THE POSSIBILITY OF RAPIDLY DETERIORATING CONDITIONS. IN ADDITION TO HEAVY RAINFALL WHICH MAY APPROACH ONE INCH IN AN HOURS TIME...GUSTY WINDS TO 35 MPH...DANGEROUS LIGHTNING...AND HAIL ARE ALSO POSSIBLE. BE ESPECIALLY CAREFUL IF YOU ARE DRIVING AS THERE MAY BE PONDING OF WATER ON THE ROADWAYS AND REDUCED VISIBILITY IN HEAVY RAIN. IF YOU EXPERIENCE HIGH WATER OR HAIL...PLEASE REPORT THESE CONDITIONS BY CALLING 1-877-633-6772. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES.
Local storm report, Jul 4, 11:45 AM EST, 1 hour 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1245 PM EDT FRI JUL 4 2003
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1240 PM REPUBLIC PA WIND DAMAGE
07/04/03 FAYETTE LARGE TREES BLOWN DOWN.
REPORTED BY EMERGENCY
MANAGEMENTSpecial weather statement, Jul 4, 12:44 PM EST, 21 minutes before
PAZ007-008-041845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 144 PM EDT FRI JUL 4 2003 ...THUNDERSTORMS MOVING ACROSS THE REGION... THUNDERSTORMS ARE DEVELOPING AND MOVING ACROSS THE REGION THIS HOLIDAY AFTERNOON. THE STRONGEST ACTIVITY IS MOVING THROUGH NORTH EASTERN OHIO INTO NORTH WESTERN PENNSYLVANIA. THUNDERSTORMS MAY DEVELOP AT ANY TIME OVER THE ENTIRE REGION TODAY. IF YOUR HOLIDAY PLANS INCLUDE OUTDOOR ACTIVITIES...PLEASE BE PREPARED FOR THE POSSIBILITY OF RAPIDLY DETERIORATING CONDITIONS. IN ADDITION TO HEAVY RAINFALL WHICH MAY APPROACH ONE INCH IN AN HOURS TIME...GUSTY WINDS TO 35 MPH...DANGEROUS LIGHTNING...AND HAIL ARE ALSO POSSIBLE. BE ESPECIALLY CAREFUL IF YOU ARE DRIVING AS THERE MAY BE PONDING OF WATER ON THE ROADWAYS AND REDUCED VISIBILITY IN HEAVY RAIN. IF YOU EXPERIENCE HIGH WATER OR HAIL...PLEASE REPORT THESE CONDITIONS BY CALLING 1-877-633-6772. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES.
The radar
The Pittsburgh radar (KPBZ), 100 km away, was scanning. The volume nearest the first event began at 18:03 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- 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
- Heat in Pennsylvania, July 4 to 9, 2003
- Flash Flood and Flooding in Ohio, July 4 to 5, 2003
- Hail and Damaging Winds in Indiana, July 4, 2003
- Heat in Missouri, July 4 to 5, 2003
- Rip Currents in California, July 4 to 5, 2003
- Flash Flooding and Hail in Indiana, July 4 to 5, 2003
- Hail and Damaging Winds in Ohio, July 4, 2003
- Damaging Winds in Michigan, July 4, 2003
- Hail and Damaging Winds in Iowa, July 4 to 5, 2003
- Hail and Damaging Winds in Michigan, July 4, 2003
- Heat in California, July 4 to 5, 2003
- Hail and Damaging Winds in South Dakota, July 4, 2003
More
Every storm in Pennsylvania in 2003Every state in 2003This day in weather historyWarnings in Pennsylvania, July 2003
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: 5370633.