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 State College, PA wrote its last area forecast discussion before the first event at Jul 25, 8:00 PM EST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 900 PM EDT WED JUL 25 2001 ...WILL REVISE ZONES TO REFLECT FLASH FLOOD WATCH IN THE EAST... 22Z SURFACE ANALYSIS SHOWS THE COLD FRONT INTO NORTHERN PENNSYLVANIA...WITH A WEAK WAVE DEVELOPING NORTH OF STATE COLLEGE ALONG THE FRONT. SEVERAL OUTFLOW BOUNDARIES WERE ALSO FOUND...ALL OF WHICH ARE THE FOCUS OF HEAVY RAIN. AS OF 01Z WE ARE HAVING MINOR FLOODING PROBLEMS IN THE SOUTH WITH MORE SIGNIFICANT PROBLEMS IN SCHUYLKILL COUNTY. THIS TREND IS LIKELY TO CONTINUE OVER THE EASTERN PARTS OF MY CWA LATER TONIGHT. THE CITY OF POTTSVILLE REMAINS UNDER A STATE OF EMERGENCY AS OF 9PM. RADAR SHOWS SOME ECHOES IN VIRGINIA ASSOCIATED WITH A SHORTWAVE MOVING NORTH INTO THE AREA AT A HIGH RATE OF SPEED. THIS MAY RESULT IN ADDED CONVERGENCE OVERNIGHT. MESO-ETA LOOKS ON THE BALL TONIGHT. THE SURFACE LOW THAT HAS FORMED IS AHEAD OF A SHORTWAVE...PROGGED TO STRENGTHEN OVERNIGHT...AS IT HEADS INTO NORTHEAST PENNSYLVANIA. MESO-ETA SHOWS PRECIPITATION BECOMING HEAVY THROUGH TONIGHT IN THIS REGION...IN RESPONSE TO THE SHORTWAVE. THIS WILL SERVE TO STOP THE SOUTHWARD PROGRESSION EAST OF THE WAVE ALONG THE SURFACE FRONT AS UNSTABLE AIR IS LIFTED ABOVE IT. BEHIND THE SHORTWAVE...THE FRONT WILL LIKELY CONTINUE PROGRESSING FURTHER SOUTH. WILL JUST TWEAK RAIN WORDING IN THE FORECAST TO REFLECT THE FLASH FLOOD WATCH...REST OF TH]E FORECAST LOOKS OKAY. THANKS FOR COORD PHI AND BGM. .CTP...FFA FOR EASTERN THIRD OF CWA UNTIL 5AM THURSDAY. ROGOWSKI/HEAD
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Widespread urban flooding was reported with many roads closed in Harrisburg. Over 3 inches of rain was reported over portions of the Harrisburg metropolitan area.
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, July 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: 5256890.