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 Sep 28, 5:15 PM EST, 3 hours 45 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE STATE COLLEGE PA 615 PM EDT TUE SEP 28 2004 .SHORT TERM (REST OF TONIGHT)... IN COORDINATION WITH SPC...HAVE CANCELLED THE TORNADO WATCH FOR YORK AND LANCASTER COUNTIES. TOO STABLE THERE TO MAKE THUNDERSTORM ANYMORE. IT DID LOOK LIKE THERE WERE A FEW CELLS TRYING TO MOVE NORTH FROM MD EARLIER...BUT THEY DIED FAST AS THE CAME INTO THE STABLE AIR. WILL KEEP THE FLOOD WATCH RUNNING THRU 10 PM...ALTHOUGH MOST OF THAT AREA (EXCEPT PERRY CO) IS NOW UNDER A FLOOD WARNING THRU 1230 AM LOCAL TIME. RIVER FLOOD WARNINGS FOR 8 POINTS CONTINUE AS WELL. THE RAIN SHOULD BE ATPERING OFF BEFORE MIDNIGHT...EXCEPT IN THE FAR SE...WHERE IT MAY LINGER A BIT LONGER. WL LOOK CLOSER AT THE REST OF THE FORECAST LATER THIS EVENING. && .PREVIOUS DISCUSSION... THE FOLLOWING WAS ORIGINALLY ISSUED AT 320 PM EDT TUE SEP 28 2004 AVIATION... REMNANTS OF JEANNE WILL CONTINUE IFR/MVFR CONDS THROUGH THIS EVENING AND INTO THE OVERNIGHT WITH ISOLD LIFR IN HEAVIER DOWNPOURS. FAIRLY SOLID SW-NE ORIENTED RAINSHIELD ACROSS ALL TERMINALS EXCEPT KBFD ATTM. AS OF 18Z...HEAVIEST RAINFALL LOCATED OVER THE LOWER SUSQ VALLEY WITH TROPICAL AIRMASS EVIDENT BY 70+ DEWPOINTS. THIS AREA WILL BE MONITORED FOR POTENTIAL TSRA ACTIVITY. OTHERWISE...STEADY LIGHT/MODERATE RAIN TO PERSIST THROUGH 03-06Z...TAPERING FROM WEST TO EAST. AS SFC LOW SLIDES TOWARD THE DELMARVA...LOW LEVEL WINDS COULD BECOME GUSTY. COLD FRONT BEHIND JEANNE REMNANTS QUICKLY RACES EASTWARD...AND ASSOCIATED SHORTWAVE LAGGING BACK INTO THE OHIO VALLEY. THIS WILL PROVIDE A COOL POOL ALOFT DURING THE DAY WED. HOWEVER...THIS FEATURE APPEARS TO LACK MOISTURE AND THUS NO MENTION OF PCPN IN TAFS. OVERALL...IMPROVING CONDITIONS FROM MID-DAY TOM. SHORT TERM (TONIGHT THROUGH THURSDAY)... REMNANTS OF JEANNE STILL PRODUCING RAIN ACROSS MUCH OF CENTRAL PA AS CENTER OF CIRCULATION TRACKS ENE ACROSS VIRGINIA. STILL A 2-4 HOUR PERIOD OF HEAVIER RAIN TO AFFECT THE LOWER SUSQ VALLEY WITH STORM TOTALS REACHING THE 2-4 INCH RANGE ACROSS THE SOUTHER TIER. SO FLOOD WATCH EXTENDED THROUGH MID EVENING FOR LOWER SUSQ VALLEY. IN ADDITION...TORNADO WATCH HAS BEEN ISSUED TO OUR SE - TOUCHING YORK AND LANCASTER COUNTIES. A FEW STORMS EXHIBITING SIGNS OF ROTATION IN THIS REGION AND DAMAGING WINDS REMAIN A THREAT ALONG FEEDER BANDS LINED UP NEAR THE CHESAPEAKE AS THEY ENTER SC PA. WHOLE SYSTEM WILL CONTINUE TO MOVE EAST THIS EVENING...AND PRECIP ALREADY ENDING OR BEGINNING TO TAPER OFF IN MANY OF THE W AND C COUNTIES. MOST AREAS WILL BE RAINFREE BY MID/LATE EVENING...WITH PRECIP HOLDING ON THE LONGEST IN THE MID AND LOWER SUSQ VALLEY. THEN SKIES WILL GRADUALLY CLEAR OVERNIGHT WITH PATCHY FOG DEVELOPING IN THE MOIST SURFACE AIR. FOR WED INTO THU...HIGH PRESSURE ATTEMPTS TO BUILD IN AT THE SURFACE...BUT AN UPPER LEVEL DISTURBANCE WILL SLIDE NE OUT OF THE OHIO VALLEY WED NIGHT. THIS COOL POOL ALOFT SHOULD BE ENOUGH TO GENERATE A FEW SHOWERS WED NIGHT INTO THU...AND MENTIONED 20-30 POPS IN THE ZONES. LONG TERM (THURSDAY NIGHT THROUGH TUESDAY)... DRY WEATHER FOR MUCH OF THE EXTENDED AS HIGH PRESSURE DOMINATES THU AND FRI. COLD FRONT MOVES THROUGH SAT/SAT NIGHT BRINGING A CHANCE OF RAIN...THEN COLDER AND DRIER AIR MOVES IN BEHIND FOR THE BEGINNING OF NEXT WEEK. && .CTP WATCHES/WARNINGS/ADVISORIES... PA...FLOOD WATCH FOR ZONES PAZ036-056-057-059-063>066 UNTIL 10 PM EDT. && SHORT TERM (UPDATE)...DANGELO
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 526 AM EDT TUE SEP 28 2004 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-290924- ADAMS PA-BEDFORD PA-BLAIR PA-CAMBRIA PA-CAMERON PA-CLEARFIELD PA- COLUMBIA PA-CUMBERLAND PA-DAUPHIN PA-ELK PA-FRANKLIN PA-FULTON PA- HUNTINGDON PA-JUNIATA PA-LANCASTER PA-LEBANON PA-MCKEAN PA- MIFFLIN PA-MONTOUR PA-NORTHERN CENTRE PA-NORTHERN CLINTON PA- NORTHERN LYCOMING PA-NORTHUMBERLAND PA-PERRY PA-POTTER PA- SCHUYLKILL PA-SNYDER PA-SOMERSET PA-SOUTHERN CENTRE PA- SOUTHERN CLINTON PA-SOUTHERN LYCOMING PA-SULLIVAN PA-TIOGA PA- UNION PA-WARREN PA-YORK PA- 526 AM EDT TUE SEP 28 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY: THE REMNANTS OF HURRICANE JEANNE WILL SPREAD HEAVY RAIN OVER SOUTHEASTERN PARTS OF THE REGION. SOME FLOODING WILL BE POSSIBLE...MAINLY ALONG SMALLER STREAMS AND CREEKS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 607 PM EDT TUE SEP 28 2004 PAZ065-066-282300- LANCASTER PA-YORK PA- 607 PM EDT TUE SEP 28 2004 ...THE TORNADO WATCH HAS BEEN CANCELED FOR THE FOLLOWING COUNTIES... LANCASTER AND YORK. THE TORNADO WATCH FOR LANCASTER AND YORK COUNTIES HAS BEEN CANCELED...AS THE AREA IS COOL AND RAINY. THESE CONDITIONS MEAN IT IS NO LONGER FAVORABLE FOR THUNDERSTORMS OR TORNADOES TO DEVELOP. DANGELO
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rain caused the Swatara Creek at Harper Tavern to exceed its flood stage of 9 feet. The river rose above flood stage at 21:00 EST on the 28th, crested at 10.09 feet at 05:00 EST on the 29th, and fell below flood stage at 13:15 EST on the 29th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2004Every state in 2004This day in weather historyWarnings in Pennsylvania, September 2004
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: 5422858.