1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 Aug 9, 1:15 PM EST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 215 PM EDT SAT AUG 9 2003 HEAVY RAIN IS OCCURRING OVER MY MOUNTAIN COUNTIES TO THE SOUTHEAST. ADDITIONAL RAINFALL ALSO DEVELOPING ALONG THE RIDGES AND MOVING SLOWLY TO THE NORTH. FLOOD WATCH IN EFFECT FOR GENERALLY THE SOUTH AND EAST SECTIONS OF THE CWA WHERE FFG ARE JUST ABOUT AN INCH IN ONE HOUR. EXPECT SLOW MOVING THUNDERSTORMS TO POP UP FOR THE REST OF THE DAY WITH PLENTY OF RAINFALL AND FLOODING CONCERNS. THANKS TO LWX AND RLX FOR RADAR INFORMATION TO HELP IN RAINFALL ASSESSMENT. SHORT TERM FORECAST HEAVY ON PERSISTENCE. HOWEVER...THIS PATTERN SHOULD BREAK BY WEDNESDAY WHEN THE WESTERN RIDGE MOVES EASTWARD. THIS WILL FINALLY GIVE US A TASTE OF SUMMER DURING THE SECOND HALF OF NEXT WEEK. PIT 66 78 66 79 / 50 40 30 40 HLG 64 78 62 79 / 50 40 30 40 MGW 65 80 64 80 / 50 40 30 40 ZZV 66 79 65 78 / 30 30 30 40 PHD 66 79 66 78 / 30 30 30 40 FKL 63 76 61 78 / 50 40 30 40 DUJ 62 76 63 78 / 50 40 30 40 LBE 64 78 64 79 / 50 40 30 40 BTP 64 76 64 78 / 50 40 30 40 IDI 62 76 63 78 / 50 40 30 40 ODM 61 75 61 77 / 60 40 30 30 .PBZ... MD...FLOOD WATCH FOR THIS AFTERNOON AND EVENING FOR ZONE MDZ001. OH...NONE. PA...FLOOD WATCH FOR THIS AFTERNOON AND EVENING FOR ZONES PAZ021... PAZ029>032. WV...FLOOD WATCH FOR THIS AFTERNOON AND EVENING FOR ZONES WVZ002>004...WVZ012...WVZ021>023...WVZ041. TYBURSKI
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-090900- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 452 AM EDT SAT AUG 9 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN PENNSYLVANIA EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND. .DAY ONE...TODAY SHOWERS AND THUNDERSTORMS WILL ONCE AGAIN DEVELOP ACROSS THE AREA TODAY. THESE STORMS COULD PRODUCE VERY HEAVY RAIN AND WILL BE SLOW MOVING. THIS WILL CONTINUE TO PROVIDE THE THREAT FOR FLASH FLOODING ON AREA STREAMS. .DAYS TWO THROUGH SEVEN... MORE SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED INTO THE BEGINNING OF NEXT WEEK. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-091430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 924 AM EDT SAT AUG 9 2003 ...PATCHY DENSE FOG ACROSS THE AREA MAY MAKE TRAVEL DIFFICULT THIS MORNING... PATCHY DENSE FOG REMAINS ACROSS THE AREA THIS MORNING. WHILE MOST AREAS HAVE VISIBILITIES GREATER THAN ONE MILE...SOME RIVER AND MOUNTAIN VALLEY LOCATIONS CONTINUE TO REPORT FOG THAT IS LIMITING VISIBILITY TO 1/4 TO 1/2 MILE. VISIBILITIES ARE EXPECTED TO IMPROVE BY LATE MORNING AS THE FOG DISSIPATES. BE ALERT IF YOU ARE DRIVING THIS MORNING AS VISIBILITIES MAY LOWER RAPIDLY OVER A SHORT DISTANCE. MAINTAIN A SAFE DISTANCE BETWEEN OTHER VEHICLES AND USE YOUR LOW BEAMS. TYBURSKI
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1258 PM EDT SAT AUG 9 2003
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1255 PM STONEBORO PA FLASH FLOODS
08/09/03 MERCER FLOODING ON STONEBORO-LATERAL RD.911MDZ001-WVZ023-041-091800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 111 PM EDT SAT AUG 9 2003 ...THUNDERSTORMS WITH HEAVY RAINFALL MOVING THROUGH THE AREA... AT 1:10 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH HEAVY RAINFALL MOVING THROUGH TUCKER AND PRESTON COUNTIES IN WEST VIRGINIA AND GARRETT COUNTY IN MARYLAND. THESE STORMS ARE MOVING NORTH AT 15 MPH AND WILL AFFECT THE AREA BETWEEN 1:15 PM AND 2:00 PM. LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE... PARSONS... KINGWOOD AND OAKLAND. BE ALERT IF YOU ARE DRIVING AS HEAVY RAIN MAY CAUSE PONDING OF WATER ON ROADWAYS AND REDUCED VISIBILITY. IF YOU EXPERIENCE HIGH WATER...PLEASE CALL THE NATIONAL WEATHER SERVICE TOLL-FREE AT 1-877-633-6772. TYBURSKI
PAZ030-092000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 255 PM EDT SAT AUG 9 2003 ...THUNDERSTORMS WITH HEAVY RAIN DEVELOPING OVER THE AREA... AT 2:53 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH HEAVY RAINFALL MOVING THROUGH EASTERN WESTMORELAND COUNTY. THESE STORMS ARE MOVING TO THE NORTHWEST AT 10 MPH AND WILL CONTINUE TO AFFECT THE AREA BETWEEN THROUGH 4:00 PM. LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE...NEW ALEXANDRIA... PLEASANT UNITY...AND CRABTREE. DRIVING MAY ALSO BE DIFFICULT ALONG ROUTE 22. BE ALERT IF YOU ARE TRAVELING THIS AFTERNOON AS HEAVY RAIN MAY CAUSE PONDING OF WATER ON ROADWAYS AND REDUCED VISIBILITY. IF YOU EXPERIENCE HIGH WATER...PLEASE CALL THE NATIONAL WEATHER SERVICE TOLL-FREE AT 1-877-633-6772. TYBURSKI
The Pittsburgh radar (KPBZ), 137 km away, was scanning. The volume nearest the first event began at 19:00 UTC.
1 flash flood. Local standard time, as filed.
Basements flooded along Route 39.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2003Every state in 2003This day in weather historyWarnings in Maryland, August 2003
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: 5334174.