1 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 Aug 11, 3:00 PM EST, 1 hour earlier.
FXUS61 KCTP 111935 AFDCTP AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 400 PM EDT MON AUG 11 2003 .SHORT TERM... UPPER LOW PERSISTING FOR A FEW MORE FORECAST PERIODS...BRINGING A CHANCE FOR LOCALLY HEAVY RAINFALL AGAIN THIS EVENING BEFORE PRECIP TAPERS OFF. WILL KEEP FLOOD WATCH GOING THROUGH THE EVENING FOR MUCH OF CWA. ANOTHER ROUND OF SCATTERED TSTORMS DEVELOPS ON TUE. LOOKS LIKE BEST CHANCE WILL BE IN THE NORTH AS PRECIP LINE DEVELOPS E-W ACROSS NORTHERN TIER. BY TUE NIGHT...UPPER LOW FINALLY BEGINS TO CEDE. .EXTENDED... IT LOOKS LIKE A RUN OF DRY WEATHER MAY FINALLY REACH CENTRAL PA BY THE EXTENDED PERIODS AS DRIER AIR FINALLY ABLE TO PUSH INTO THE REGION IN THE WAKE OF EXCESSIVELY PERSISTENT UPPER TROUGH. TEMPS REMAIN NEAR SEASONAL. .PRELIMINARY POINT TEMPS/POPS... MDT 70 84 70 86 / 40 30 30 20 IPT 67 83 67 85 / 60 50 30 20 BFD 60 77 60 79 / 50 50 30 20 JST 62 77 62 79 / 50 30 30 20 AOO 64 80 64 82 / 50 30 30 20 UNV 67 82 67 84 / 50 40 30 20 SEG 68 83 68 85 / 50 40 30 20 LNS 70 84 70 86 / 40 30 30 20 THV 69 84 69 85 / 40 30 30 20 .CTP... PA...FLOOD WATCH FOR THIS EVENING FOR ZONES PAZ006...PAZ011>012... PAZ017>019...PAZ024>028...PAZ033>037...PAZ041>042...PAZ045>046... PAZ049>053...PAZ056>059...PAZ063>066. RXR
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-111000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 340 AM EDT MON AUG 11 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY A FLOOD WATCH IS IN EFFECT TODAY THROUGH LATE TONIGHT FOR ALL OF CENTRAL PENNSYLVANIA EXCEPT FOR WARREN...ELK AND MCKEAN COUNTIES. SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN WILL BECOME MORE NUMEROUS ACROSS CENTRAL PENNSYLVANIA THIS MORNING AND AFTERNOON... AND CONTINUE ON THROUGH THE EVENING HOURS. GIVEN RECENT HEAVY RAINS AND SATURATED SOILS...SIGNIFICANT FLOODING OF URBAN AND POOR DRAINAGE AREAS IS POSSIBLE DUE TO THE EXPECTED HEAVY RAINFALL. THE ADDITIONAL RAINFALL MAY ALSO PUSH MANY SMALLER CREEKS AND STREAMS OUT OF THEIR BANKS LATER TODAY. .DAYS TWO THROUGH SEVEN... LOCAL HEAVY RAIN FROM SCATTERED SHOWERS AND THUNDERSTORMS WILL STILL BE POSSIBLE ON TUESDAY AND WEDNESDAY. OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rain caused Swatara Creek at Harper Tavern to flood. The creek reached flood stage of 9.0 feet at 1600 EST, crested at 9.4 feet, then fell back below flood stage at 2015 EST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2003Every state in 2003This day in weather historyWarnings in Pennsylvania, August 2003
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: 5368875.