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 10, 2:58 PM EST, 1 hour 42 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 358 PM EDT FRI AUG 10 2001 FRONT SAGGING SOUTH ACROSS SOUTHWEST PA AND SE OHIO EARLY THIS EVENING. HEAVY RAINS DEVELOPING ON A WEST TO EAST LINE FROM NOBLE COUNTY OH ACROSS NORTHERN W VA. PWS SOUTH OF THE FRONT APPROACHING 2.00 INCHES AND FFG ONLY 1.5 INCHES IN AN HOUR WITH POSSIBLE TRAINING WILL ISSUE FLASH FLOOD WATCH FOR NOBLE AND MONROE COUNTIES IN EAST CENTRAL OHIO...THE NORTHERN WV COUNTIES EXCEPT THE PANHANDLE...AND GARRETT COUNTY MD. FRONT WILL DROP FAR ENOUGH SOUTH BY SATURDAY TO KEEP SHOWERS AND TSTMS SOUTH OF MOST OF CWA EXCEPT NORTHERN WV WHERE THERE STILL BE A CHANCE OF SHOWERS AND TSTMS. WEAK IMPULSE MOVING ALONG FRONT WILL PRODUCE CHANCE OF SHOWERS SATURDAY NIGHT. SHOWERS COULD LINGER INTO SUNDAY MORNING...BUT WITH LOW MOS POPS WILL NOT CONTINUE CHANCE OF SHOWERS FOR ANOTHER PD. HIGH PRESSURE FINALLY SETTLES OVER REGION FOR BEGINNING OF THE WEEK. NEXT FRONT MOVES INTO CWA THURSDAY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS. WJD .PBZ... MD...FLASH FLOOD WATCH UNTIL 1000 PM EDT FRIDAY FOR ZONE MDZ001. OH...FLASH FLOOD WATCH UNTIL 1000 PM EDT FRIDAY FOR ZONES OHZ068>069. PA...NONE. WV...FLASH FLOOD WATCH UNTIL 1000 PM EDT FRIDAY FOR ZONES WVZ012... WVZ021>023...WVZ041.
The Pittsburgh radar (KPBZ), 38 km away, was scanning. The volume nearest the first event began at 21:39 UTC.
1 flash flood. Local standard time, as filed.
Several thunderstorms passing over the area produced basement and parking lot flooding in the California area. Pike Run Creek overflowed and flooded sections of California Drive.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2001Every state in 2001This day in weather historyWarnings in Pennsylvania, August 2001
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: 5265465.