1 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 Jul 12, 1:55 AM EST, 3 hours 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 255 AM EDT MON JUL 12 2004 .AVIATION... ACTIVITY CONTINUES TO FILL IN ACROSS THE AREA. TWO AREAS OF CONCERN THIS EARLY MORNING. FIRST AREA IS MOVING NORTHWARD ACROSS N WV INTO SW PA AND SECOND AREA IS MOVING ACROSS NW PA. CLOUD DECK REMAINS MAINLY VFR AND WOULD EXPECT THIS TREND TO CONTINUE FOR THE REST OF THE MORNING. IN AREAS OF TRW AND BR VISIBILITIES SHOULD FALL TO BETWEEN 3 TO 5 MILES WITH SOME DROPPING BELOW 3 IN STRONGER STORMS. HIT OR MISS ACTIVITY IS EXPECTED THROUGHOUT THE MORNING...THEN EASTERN FORECAST AREA BECOMES A CONCERN THIS AFTERNOON. && .SHORT TERM (TODAY THROUGH TUESDAY NIGHT)... MODELS RATHER SIMILAR THIS MORNING KEEPING FRONTAL BOUNDARY DRAPED ACROSS THE AREA AS 85H TROUGH SLIDES EASTWARD INTO THE AFTERNOON. WITH THIS MIDLEVEL FEATURE BEST TIME FOR WIDESPREAD COVERAGE WILL BE THIS MORNING WITH PRECIP AXIS MOVING SLOWLY EASTWARD. WITH TIME OF DAY AND ATMOSPHERE NOT OVERLY UNSTABLE PROBLEMS THIS MORNING WILL BE MORE TOWARD FLOODING RATHER THAN SEVERE. PRECIP ENDS OVERNIGHT AS TROUGH AXIS SETS UP TO THE EAST OF CWA INTO TUESDAY. NEITHER MODELS PUMPING OUT MUCH QPF ON TUESDAY...HOWEVER WITH FRONTAL BOUNDARY AND PLENTY OF MOISTURE FELT CHC POPS WAS NEEDED AS ACTIVITY COULD POP AT ANY TIME. && .LONG TERM (WEDNESDAY THROUGH SUNDAY)... STRONGER COLD FRONT WITH SFC LOW AND UL SUPPORT PUSHES THROUGH WEDNESDAY WITH QPF THROUGHOUT THE DAY. AT THIS POINT GFS SHOWING BLEAK PICTURE WED INTO THURSDAY NIGHT AS SFC LOW SLOWS OVER AREA AS DEEPENING TROUGH TAKES ITS TIMING MOVING EASTWARD. GFS SEEMS TO BE HAVING SOME FEEDBACK PROBLEMS WITH QPF BUT THIS WILL HAVE TO BE WATCHED AS THE WEEK PROGRESSES. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && AVIATION...99 SHORT TERM...22 LONG TERM...22
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 533 AM EDT MON JUL 12 2004 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-120932- ALLEGHENY PA-ARMSTRONG PA-BEAVER PA-BELMONT OH-BROOKE WV-BUTLER PA- CARROLL OH-CLARION PA-COLUMBIANA OH-COSHOCTON OH-FAYETTE PA- FOREST PA-GARRETT MD-GREENE PA-GUERNSEY OH-HANCOCK WV-HARRISON OH- INDIANA PA-JEFFERSON PA-JEFFERSON OH-LAWRENCE PA-MARION WV- MARSHALL WV-MERCER PA-MONONGALIA WV-MONROE OH-MUSKINGUM OH-NOBLE OH- OHIO WV-PRESTON WV-TUCKER WV-TUSCARAWAS OH-VENANGO PA-WASHINGTON PA- WESTMORELAND PA-WETZEL WV- 533 AM EDT MON JUL 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN PENNSYLVANIA EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND. .DAY ONE...TODAY SCATTERED SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS. PONDING OF WATER IS LIKELY IN LOW LYING SPOTS. A FLOOD WARNING IS IN EFFECT FOR VENANGO COUNTY UNTIL 8 AM MONDAY MORNING. SINCE MIDNIGHT HEAVY RAIN HAS ALSO FALLEN OVER PARTS OF THE FOLLOWING COUNTIES...FOREST, MERCER, BUTLER, ARMSTRONG, FAYETTE AND GREENE IN PENNSYLVANIA...MONONGALIA, PRESTON AND TUCKER IN WEST VIRGINIA...AND GARRETT COUNTY MARYLAND. BE ALERT FOR ADDITIONAL HEAVY RAIN TODAY ON ALREADY MOIST SOIL. .DAYS TWO THROUGH SEVEN... ON TUESDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER EAST CENTRAL OHIO. HEAVY RAIN IS LIKELY ALSO. ON WEDNESDAY THE SLIGHT RISK OF SEVERE THUNDERSTORMS COVERS SOUTHWEST PENNSYLVANIA, NORTHERN WEST VIRGINIA, EAST CENTRAL OHIO AND GARRETT COUNTY MARYLAND. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 259 AM EDT MON JUL 12 2004 PAZ029-031-032-WVZ003-004-021-022-120757- FAYETTE PA-GREENE PA-MARION WV-MARSHALL WV-MONONGALIA WV-OHIO WV- WASHINGTON PA- 259 AM EDT MON JUL 12 2004 ...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH... AN AREA OF SHOWERS AND THUNDERSTORMS WITH HEAVY DOWNPOURS WILL MOVE THROUGH BY 4AM. THESE STORMS WILL PROVIDE PLENTY OF LIGHTNING AND VERY HEAVY DOWNPOURS. AREAS THAT RECEIVE HEAVY RAIN SHOULD EXPECT PONDING OF WATER IN LOW LYING AREAS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 322 AM EDT MON JUL 12 2004 PAZ007>009-120820- FOREST PA-MERCER PA-VENANGO PA- 322 AM EDT MON JUL 12 2004 ...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH... AN AREA OF SHOWERS AND THUNDERSTORMS IS MOVING THROUGH. THESE STORMS WILL PROVIDE PLENTY OF LIGHTNING AND VERY HEAVY DOWNPOURS. THIS AREA SHOULD MOVE TO THE NORTHEAST BETWEEN 430 AM OR 5 AM. LOCATIONS THAT RECEIVE HEAVY DOWNPOURS SHOULD EXPECT PONDING OF WATER IN LOW LYING AREAS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 416 AM EDT MON JUL 12 2004 MDZ001-PAZ032-WVZ023-121000- FAYETTE PA-GARRETT MD-PRESTON WV- 416 AM EDT MON JUL 12 2004 ...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH THE AREA... AN AREA OF SHOWERS AND THUNDERSTORMS IS MOVING THROUGH. THESE STORMS WILL PROVIDE PLENTY OF LIGHTNING AND VERY HEAVY DOWNPOURS. THIS AREA IS MOVING NORTHEAST AND SHOULD PASS BY 6 AM. LOCATIONS THAT RECEIVE HEAVY DOWNPOURS WILL HAVE PONDING OF WATER IN LOW LYING AREAS AND ON ROADS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 504 AM EDT MON JUL 12 2004 PAZ014-022-121100- ARMSTRONG PA-BUTLER PA- 504 AM EDT MON JUL 12 2004 ...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH THE AREA... AN AREA OF SHOWERS AND THUNDERSTORMS IS MOVING THROUGH. THESE STORMS WILL PROVIDE PLENTY OF LIGHTNING AND VERY HEAVY DOWNPOURS. THIS AREA IS MOVING NORTHEAST AND SHOULD PASS BY 7 AM. LOCATIONS THAT RECEIVE HEAVY DOWNPOURS WILL HAVE PONDING OF WATER IN LOW LYING AREAS AND ON ROADS. THE HEAVIEST RAIN WILL MOVE ACROSS THE SOUTHERN HALF OF BUTLER COUNTY AND THE NORTHERN HALF OF ARMSTRONG COUNTY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 511 AM EDT MON JUL 12 2004 PAZ007>009-121100- FOREST PA-MERCER PA-VENANGO PA- 511 AM EDT MON JUL 12 2004 ...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH THE AREA... AN AREA OF SHOWERS AND THUNDERSTORMS IS MOVING THROUGH. THESE STORMS WILL PROVIDE PLENTY OF LIGHTNING AND VERY HEAVY DOWNPOURS. THIS AREA IS MOVING NORTHEAST AND SHOULD PASS BY 7 AM. LOCATIONS THAT RECEIVE HEAVY DOWNPOURS WILL HAVE PONDING OF WATER IN LOW LYING AREAS AND ON ROADS.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Low lying areas flooded in Cornplanter Twp, along Rte 8 near Rouseville and McClintock.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2004Every state in 2004This day in weather historyWarnings in Pennsylvania, July 2004
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: 5414239.