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 Sep 3, 1:20 PM EST, 3 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 220 PM EDT WED SEP 3 2003 ONGOING CONVECTION ON WARM FRONTAL BOUNDARY ACTING AS CONVERGENCE BOUNDARY THAT BISECTS THE FA. FOR THE REMAINDER OF THE AFTERNOON AND EVENING WILL MOVE ONLY SLOWLY NORTHWARD THEN BACK SOUTH AS FRONT APPROACHES. WITH HIGH PRECIPITABLE WATERS AND LOW FLASH FLOOD GUIDANCE PREVAILING THROUGH MUCH OF THE AREA FEEL IT IS PRUDENT TO ISSUE FLOOD WATCH THROUGH 10 PM FOR THE FA. CONVECTION SHOULD DIE DOWN AS SOLAR HEATING IS LOST SO ON GRIDS HAVE KEPT IN CHC AFTER MIDNIGHT. MODELS SLOWER THAN PREVIOUS RUNS IN MOVING FRONT THROUGH SO HAVE INSERTED A CHANCE FOR THURSDAY MORNING IN MOST ZNS EXCEPTING MUCH OF OUR OH ZNS. RIDGE BUILDS ACROSS ON THURSDAY EVENING AND FOR MUCH OF THE NEXT 5 DAYS WE REMAIN DRY. MODELS INDICATE FRONTAL BOUNDARY MOVING SOUTHWARD ON SUN BUT DYNAMICS EXPECTED TO REMAIN TO THE NORTH SO FOR NOW WILL NOT MENTION PRECIP. TEMPS SIMILAR TO MOS FIRST THREE PERIODS THEN A BLEND OF GFS AND FWC NOS. PIT 64 75 54 73 / 60 20 10 10 HLG 64 75 54 73 / 60 20 10 10 MGW 64 77 55 74 / 60 30 10 10 ZZV 63 74 52 74 / 60 20 10 10 PHD 63 74 52 74 / 60 20 10 10 FKL 60 71 50 69 / 60 30 10 10 DUJ 60 71 50 68 / 60 30 10 10 LBE 64 75 54 73 / 60 20 10 10 BTP 62 73 52 71 / 60 30 10 10 IDI 62 73 52 70 / 60 30 10 10 ODM 58 69 54 69 / 70 40 20 10 MD...FLOOD WATCH UNTIL 1000 PM EDT WEDNESDAY FOR ZONE MDZ001. OH...FLOOD WATCH UNTIL 1000 PM EDT WEDNESDAY FOR ZONES OHZ039>041... OHZ048>050...OHZ057>059...OHZ068>069. PA...FLOOD WATCH UNTIL 1000 PM EDT WEDNESDAY FOR ZONES PAZ007>009... PAZ013>016...PAZ020>023...PAZ029>032. WV...FLOOD WATCH UNTIL 1000 PM EDT WEDNESDAY FOR ZONES WVZ001>004... WVZ012...WVZ021>023...WVZ041.
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-031800- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1135 AM EDT WED SEP 3 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 OCCUR OFF AND ON THROUGH TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA INTO TONIGHT WITH THE MAIN THREATS BEING DAMAGING WINDS...LARGE HAIL...AS WELL AS HEAVY RAIN. DANGEROUS LIGHTNING IS ALSO POSSIBLE. A FLOOD WATCH REMAINS IN EFFECT INTO THIS EVENING FOR EXTREME NORTHERN WEST VIRGINIA...EXTREME SOUTHWEST PENNSYLVANIA AND GARRETT COUNTY MARYLAND. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THROUGH THIS EVENING.
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-032100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1134 AM EDT WED SEP 3 2003 SHOWERS AND THUNDERSTORMS WILL OCCUR OFF AND ON THROUGH TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA INTO TONIGHT WITH THE MAIN THREATS BEING DAMAGING WINDS...LARGE HAIL...AS WELL AS HEAVY RAIN. DANGEROUS LIGHTNING IS ALSO POSSIBLE. SKYWARN ACTIVATION MAY BE NEEDED LATER TODAY.
PAZ031-031600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1157 AM EDT WED SEP 3 2003 THIS IS A COMMUNICATIONS TEST MESSAGE. THIS IS ONLY A TEST.
PAZ021-030-031800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1220 PM EDT WED SEP 3 2003 SHOWERS AND THUNDERSTORMS MOVING THROUGH EASTERN ALLEGHENY AND WESTERN WESTMORELAND COUNTY MAY PRODUCE RAINS OF ONE HALF TO NEAR ONE INCH IN A SHORT PERIOD OF TIME. MOTORISTS SHOULD BE ALERT FOR PONDING OF WATER ON ROADWAYS.
PAZ014-020-031915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 231 PM EDT WED SEP 3 2003 AT 2:20 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING THROUGH BEAVER COUNTY. THESE STORMS ARE MOVING TO THE NORTHEAST AT 35 MPH AND WILL MOVE INTO BUTLER COUNTY BETWEEN 2:30 PM AND 3:20 PM. LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE FOMBELL...ZELIENOPLE...MIDDLE LANCASTER...AND BEAVER FALLS. BE ALERT FOR HEAVY RAIN...GUSTY WINDS TO 40 MPH AND DANGEROUS LIGHTNING. RECENT RAIN HAS SATURATED THE SOIL AND POOR DRAINAGE AND RUNOFF FLOODING MAY OCCUR. IF YOU ARE DRIVING...THERE MAY BE REDUCED VISIBILITY IN HEAVY RAIN AND PONDING OF WATER ON ROADWAYS. IF YOU EXPERIENCE HIGH WATER OR STORM-RELATED DAMAGE...PLEASE CONTACT THE NATIONAL WEATHER SERVICE TOLL-FREE AT 1-877-633-6772. TYBURSKI
OHZ049-050-032100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 339 PM EDT WED SEP 3 2003 AT 3:35 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING THROUGH HARRISON COUNTY. THESE STORMS ARE MOVING TO THE NORTHEAST AT 35 MPH AND WILL MOVE INTO JEFFERSON COUNTY BETWEEN 3:55 PM AND 5:00 PM. LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE JEWETT...ANNAPOLIS...RICHMOND...AND TORONTO. BE ALERT FOR HEAVY RAIN...GUSTY WINDS TO 40 MPH AND DANGEROUS LIGHTNING. RECENT RAIN HAS SATURATED THE SOIL AND POOR DRAINAGE AND RUNOFF FLOODING MAY OCCUR. IF YOU ARE DRIVING...THERE MAY BE REDUCED VISIBILITY IN HEAVY RAIN AND PONDING OF WATER ON ROADWAYS. IF YOU EXPERIENCE HIGH WATER OR STORM-RELATED DAMAGE...PLEASE CONTACT THE NATIONAL WEATHER SERVICE TOLL-FREE AT 1-877-633-6772. TYBURSKI
PAZ020-021-032215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 509 PM EDT WED SEP 3 2003 AT 5:00 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING THROUGH SOUTHERN BEAVER COUNTY. THESE STORMS ARE MOVING TO THE NORTHEAST AT 35 MPH AND WILL MOVE INTO NORTHERN ALLEGHENY COUNTY THROUGH 6:00 PM. LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE ALIQUIPPA...WEXFORD...LEETSDALE...HOPEWELL...AND CENTER TOWNSHIP. BE ALERT FOR HEAVY RAIN...GUSTY WINDS TO 40 MPH AND DANGEROUS LIGHTNING. RECENT RAIN HAS SATURATED THE SOIL AND POOR DRAINAGE AND RUNOFF FLOODING MAY OCCUR. IF YOU ARE DRIVING...THERE MAY BE REDUCED VISIBILITY IN HEAVY RAIN AND PONDING OF WATER ON ROADWAYS. IF YOU EXPERIENCE HIGH WATER OR STORM-RELATED DAMAGE...PLEASE CONTACT THE NATIONAL WEATHER SERVICE TOLL-FREE AT 1-877-633-6772. TYBURSKI
The Pittsburgh radar (KPBZ), 78 km away, was scanning. The volume nearest the first event began at 21:29 UTC.
1 flash flood. Local standard time, as filed.
State Route 151 flooded at several locations between Scio, Conotton, and Bowerston.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2003Every state in 2003This day in weather historyWarnings in Ohio, September 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: 5374121.