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 30, 8:18 AM EST, 5 hours 27 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE PITTSBURGH PA 918 AM EDT MON AUG 30 2004 .SHORT TERM (REST OF TODAY THROUGH TUESDAY NIGHT)... WL UPDATE ZNS SHORTLY TO BUMP UP POPS TO LKLY TDA BASED ON CURRENT RADAR TREND. BACK EDGE OF RAIN AREA STILL HOLDING ACRS E CNTRL OH WITH LTL EWD MVMT. MORE SHWRS CONTG TO DVLP UPSTREAM AND THEN SLIDE NEWD ALG FNT. EXPECT PCPN TO BGN TO PUSH EWD MORE QUICKLY THIS AFTN. NO CHGS PLANNED FOR LTR PDS. && .PREVIOUS DISCUSSION... THE FOLLOWING WAS ORIGINALLY ISSUED AT 234 AM EDT MON AUG 30 2004 AVIATION ACTIVITY HAS QUIETED DOWN THIS EARLY MORNING AS FRONT HAS PUSHED THROUGH PORTIONS OF THE REGION AND HEATING IS LOST. FOR THE EARLY MORNING PERIOD AREAS EAST OF THE FRONT WILL EXPERIENCE IFR CONDITIONS WITH LOW VIS FROM FOG AND LOW CEILINGS. JUST WEST OF THE FRONT CEILINGS HAVE LIFTED IN DRIER AIR...HOWEVER LL MOISTURE WITH IFR TO MVFR CONDITIONS ARE MOVING IN ACROSS OH AND WOULD EXPECT THIS TREND TO CONTINUE EASTWARD BY DAWN. FORECAST TODAY WILL SHOW VERY GRADUAL IMPROVEMENT IN CEILINGS AS FRONTAL BOUNDARY GETS PHASED IN WITH REMNANTS OF GASTON. APPEARS BEST CHANCE FOR PCPN WILL BE EAST AHEAD OF FRONT. IFR TO MVFR CONDITIONS EXPECTED THROUGHOUT MOST OF THE MORNING WITH IMPROVEMENT FROM WEST TO EAST THIS AFTERNOON AND EVENING. DO NOT EXPECT WIDESPREAD RAIN FOR MOST OF THE AREA TODAY WITH ACTIVITY EXPECTED TO BE SCATTERED WEST OF THE RIDGES. SHORT TERM (TODAY THROUGH TUESDAY NIGHT)... BIGGEST FORECAST PROBLEM TODAY IS DETERMINING WHERE PCP WILL BE OCCURRING AND HOW HIGH TO GO WITH POPS. FRONTAL BOUNDARY HAS PASSED THROUGH THE OFFICE TEMPORARILY LIFTING CEILINGS AND IMPROVING VISIBILITIES...HOWEVER MORE CLOUDS AND SCATTERED RAIN AND DRIZZLE IS MOVING ACROSS OH AHEAD OF TROUGH. THINKING IS THE HIGHEST POPS TODAY WILL BE EAST OF BOUNDARY AS PLENTY OF MOISTURE CONTINUES TO BE PUMPED INTO MY EASTERN AREAS FROM REMNANTS OF GASTON. MOST OF THE ACTIVITY ACROSS THE AREA TODAY WILL BE SCATTERED. HOWEVER ALONG AND AHEAD OF BOUNDARY HEAVY DOWNPOURS STILL CONTINUE TO BE A POSSIBILITY. WITH THE HEAVIEST RAIN OVER THE PAST COUPLE OF DAYS OVER MY WESTERN ZONES WILL LET THE FFA EXPIRE AT 5AM. ATMOSPHERE SHOULD REMAIN STABLE FOR MOST OF CWA AS HIGHER TDS WILL BE PUSHED EASTWARD AND LITTLE SUNSHINE IS EXPECTED TODAY. MODELS PICKING UP PRETTY WELL ON A TRANSFER OF MOISTURE AND ENERGY TO GASTON LATER THIS AFTERNOON WHICH SHOULD BRING A QUICK END TO THE PRECIP ACROSS MOST OF THE CWA BY THIS EVENING. HIGH PRESSURE BUILDS IN ON TUESDAY SETTING UP QUIET WEATHER PATTERN WITH DRY AND COMFORTABLE CONDITIONS. LONG TERM (WEDNESDAY THROUGH SUNDAY)... STRONG RIDGE BUILDS INTO THE EAST WHICH WILL MEAN QUIET WEATHER FOR THE AREA FOR A GOOD PORTION OF THE WEEK. WEEKEND COULD CHANGE DEPENDING ON TROPICS. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 509 AM EDT MON AUG 30 2004 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-310908- 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- 509 AM EDT MON AUG 30 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN PENNSYLVANIA EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND. .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 114 PM EDT MON AUG 30 2004 MDZ001-301830- GARRETT MD- 114 PM EDT MON AUG 30 2004 ...THUNDERSTORMS WITH VERY HEAVY RAIN MOVING ACROSS GARRETT COUNTY... SLOW MOVING THUNDERSTORMS WITH HEAVY DOWNPOURS CONTINUE TO FORM AND MOVE VERY SLOWLY NORTHEAST ACROSS WESTERN PORTIONS OF GARRETT COUNTY. RAIN AMOUNTS OVER AN INCH ARE POSSIBLE IN A SHORT PERIOD OF TIME. THESE HEAVY DOWNPOURS WILL CAUSE PONDING OF WATER ON ROADS AND LOW LYING AREAS. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES.
The Pittsburgh radar (KPBZ), 137 km away, was scanning. The volume nearest the first event began at 18:43 UTC.
1 flash flood. Local standard time, as filed.
Post Office flooded in Grantsville. Route 219 flooded in Gortner. Several roads flooded in Oakland.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2004Every state in 2004This day in weather historyWarnings in Maryland, August 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: 5418490.