9 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. 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 22, 2:43 PM EST, 1 hour 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 343 PM EDT THU AUG 22 2002 FRONTAL BNDRY STRECHES FROM SFC LOW IN WRN NY WSWD ACROSS LWR GT LKS TO ERN IOWA AND WILL MOVE SLOWLY S/E TNGT AND STALL ACROSS CWA... PROBABLY IN SWRN PA-ECNTRL OHIO AND BE THE FOCUSING MECHANISM FOR STORMS/PSBL HVY PRECIP. MESOETA PREFERRED MDL...AT ANY RATE ATMS QUITE MOIST/UNSTABLE AND SERIES UPPR LVL IMPULSES WILL MOVE ACROSS REGION OVER NEXT 24-36 HRS BEFORE MAIN SYSTEM MOVES EWD OF CWA DURING SAT AFTN. MESOETA PAINTS 850 DWPNT NR 17C LTR TNGT MOVING INTO REGION WITH NEARLY UNDIRECTIONAL FLOW AND PWS APPROACH AOA 2.0. AVN STILL WISHES TO TAKE BNDRY JUST S OF DISTRICT OVNGT. WE ANTICIPITATE STORMS DURING EVE AS BNDRY MOVES S AND DIURNAL HEATING...GUSTY WINDS PSBL IN TSTMS(SLGT RISK CWA)...THEN AS BNDRY LAYS OUT ACROSS REGION BFR MIDN THE POSSIBILITY THAT STORMS MAY TRAIN NW-SE ACROSS REGION. YESTERDAY MESOETA WAS FAVORING I80 CNTYS AND NOW IT COULD PSBLY OCCUR ANYWHERE IN WRN PA/ECNTRL OHIO/XTREME NWVA. EVENING SHIFT WILL HAVE TO KEEP CLOSE WATCH AS SYSTEM/BNDRY DVLP EARLY TNGT AND CONSIDER AN FFA FOR SOME PORTION OF CWA AFTER CLOSER EXAMINATION. IF NOT TNGT...THEN ANOTHER POTENTIAL ROUND OF HVY PRECIP COULD OCCUR ACROSS CWA FRI/FRI NGT. HI PRES SHLD BRING DRY WX SAT NGT-MON BFR UPPER LOW/TROUGH DVLP TO OUR SOUTH IN TN VLY PROVIDING CHC POPS MID WEEK. .PBZ... MD...NONE. OH...NONE. PA...NONE. WV...NONE.
MDZ001-OHZ039>041-049-050-058-059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-222130- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1233 PM EDT THU AUG 22 2002 ...SLIGHT RISK OF SEVERE THUNDERSTORMS INTO TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT MAINLY FROM INTERSTATE 70 AND NORTHWARD. THE GREATEST THREAT FROM THESE STORMS WILL BE DAMAGING WINDS. ALSO SMALL HAIL AND FREQUENT LIGHTING STRIKES MAY ACCOMPANY THESE STORMS. POWER INTERRUPTIONS MAY OCCUR TOO. IN ADDITION...THESE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL RESULTING IN PONDING OF WATER ON ROADWAYS AND LOW LYING AREAS... ESPECIALLY TONIGHT.
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-222200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1245 PM EDT THU AUG 22 2002 ...SLIGHT RISK OF SEVERE THUNDERSTORMS INTO TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT MAINLY FROM INTERSTATE 70 AND NORTHWARD. THE GREATEST THREAT FROM THESE STORMS WILL BE DAMAGING WINDS. ALSO SMALL HAIL AND FREQUENT LIGHTING STRIKES MAY ACCOMPANY THESE STORMS. POWER INTERRUPTIONS MAY OCCUR TOO. IN ADDITION...THESE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL RESULTING IN PONDING OF WATER ON ROADWAYS AND LOW LYING AREAS... ESPECIALLY TONIGHT.
MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-222200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1247 PM EDT THU AUG 22 2002 ...SLIGHT RISK OF SEVERE THUNDERSTORMS INTO TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT MAINLY FROM INTERSTATE 70 AND NORTHWARD. THE GREATEST THREAT FROM THESE STORMS WILL BE DAMAGING WINDS. ALSO SMALL HAIL AND FREQUENT LIGHTING STRIKES MAY ACCOMPANY THESE STORMS. POWER INTERRUPTIONS MAY OCCUR TOO. IN ADDITION...THESE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL RESULTING IN PONDING OF WATER ON ROADWAYS AND LOW LYING AREAS... ESPECIALLY TONIGHT. SKYWARN ACTIVATION MAY BE NEEDED.
The Pittsburgh radar (KPBZ), 83 km away, was scanning. The volume nearest the first event began at 21:11 UTC.
9 thunderstorm wind. Local standard time, as filed.
A microburst passed across South Pymatuning Township, producing wind gusts estimated at 70 MPH. These winds downed over 100 trees and tore off an apartment building roof. The path of this microburst was approximately 1 mile long and 1/2 mile wide.
Thunderstorm winds downed numerous large trees in the Hermitage area.
Thunderstorm winds downed several large trees.
Thunderstorm winds downed several large trees.
Thunderstorm winds downed several trees and power lines.
Thunderstorm winds downed a few trees and power lines.
Thunderstorm winds downed several trees and power lines.
Thunderstorm winds downed a few large trees.
Thunderstorm winds downed several large trees and power lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2002Every state in 2002This day in weather historyWarnings in Pennsylvania, August 2002
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: 5312743, 5312823, 5312824, 5312825, 5312826, 5312827, 5312828, 5312829, 5312830.