1 waterspout, 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 Cleveland, OH wrote its last area forecast discussion before the first event at Aug 12, 1:20 PM EST, 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CLEVELAND OH 220 PM EDT SUN AUG 12 2001 DRIER AIR NOW BEGINNING TO PUSH ACRS W OH. STILL A FEW SHOWERS ACRS SE PART OF FCST AREA AND NW PA. WL USE LEFTOVER EVENING WX FOR SHOWERS. NEXT ITEM IS CDFNT OVR NW GRTLKS. MODELS SEEM A BIT SLOWER TIMING FROPA ON MONDAY AND CUD BE DUE TO THE SLOWER MVMNT OF CURRENT OH VLY SYSTEM. AVN SLOWEST OF ALL WITH FROPA MON AFTRN WHILE ETA STILL HAS CDFNT S OF ENTIRE FCST AREA AROUND 18Z. PREFER FASTER SOLUTION BASED ON NW FLOW ALOFT AND CURRENT POSITION OF FNT ALREADY DROPPING TWRD CTNRL GRTLKS. OH VLY SFC LOW WL MOV TO E CST AND DRIER AIR BHND LOW AND LOW LVL DIVERGENT NW FLOW WL STEAL ANY OPPORTUNITY FOR MOISTURE TO POOL AHD OF CDFNT. SOME JET DYNAMICS ALOFT BUT PRIMARY WAVE LIFTS WELL NE OF FCST AREA. THIS AND TIMING OF MORNING FROPA SHUD KEEP SHOWERS AT A MINIMUM. A LITTLE NERVOUS NR LAKESHORE WHERE LGT LANDBREEZE AND VERY WARM WATER MAY ENHANCE CONVERGENCE AHD OF FNT. WL FCST A SMALL CHC OF SHOWERS THRU MIDDAY EXTREME NE OH/NW PA. SHOULD BE A BEAUTY ON TUESDAY WITH LOW DEWPOINTS AND TEMPS A CATEGORY OR TWO BLO NORMAL (70S). FWC/NGM GUIDANCE TEMPS MAY BE A BIT WARM. WL GO CLOSER TO MAV/AVN GUIDANCE. MISCLE ABT 315 PM. .CLE... OH...NONE. PA...NONE. KOSARIK
The Buffalo radar (KBUF), 145 km away, was scanning. The volume nearest the first event began at 19:13 UTC.
1 waterspout. Local standard time, as filed.
Several waterspouts were observed on Lake Erie just offshore from Erie. No damage was reported.
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: 5265715.