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 Nov 28, 2:50 PM EST, 3 hours 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 250 PM EST SUN NOV 28 2004 .AVIATION... SKIES VFR IN THE EAST (ALMOST CLEAR) AND CENTRAL WHERE THE DRY AIR AND WELL-MIXED ATMOSPHERE ARE KEEPING CIGS HIGH. WILL ONLY MENTION MVFR AND PERHAPS HIGHER-IFR CIGS IN THE FAR WESTERN TAFS (JST/BFD) AND VFR WITH TEMPO MVFR FOR AOO/UNV FOR THE NEXT FEW HRS. NO FOG RESTRICTIONS IN SIGHT (BAD PUN). REST OF FCST IS VFR...AS HIGH PRESSURE BUILDS INTO THE REGION...AND ONLY SOME MID/HIGH CLOUDS WILL BE IN THE FCST WITH LIGHT...ALMOST CALM WINDS FOR MONDAY. && .SHORT TERM (TONIGHT THROUGH TUESDAY)... NOT MUCH GOING ON...SOME FLURRIES EARLY NW PART OF CWA. PARTIAL CLEARING OVERNIGHT...SOME WIND...THUS TWEAK MIN TEMPS UP SOME. NOT A BAD DAY ON MONDAY. SOME HIGH CLDS LATER IN THE DAY. ETA MAY BE TOO FAR TO THE NORTH WITH THE NEXT SYSTEM...BUT TREND LATELY IS FOR NOT A LOT OF COLD AIR...AND MILD CONDITIONS TO COME BACK FAIRLY FAST. EITHER WAY...THINK MOST OF TUESDAY WILL BE DRY...BUT KEPT LOW POPS IN. MAY BE JUST COLD ENOUGH FOR A MIX OF RAIN AND SNOW. OVERALL...LOOKS LIKE A SPLIT FLOW SOME TIME TO COME...EVEN WITH A COOL DOWN LATER IN THE WEEK. MOST LOOKING AT A FAIRLY MILD PERIOD...EL-NINO TYPE PATTERN...BUT ALSO FAIRLY WET. && .LONG TERM (TUESDAY NIGHT THROUGH SUNDAY)... FCST FOR MID WEEK (TUE NIGHT AND WED) STILL LOOKING WET...WITH SRN STREAM SYSTEM TO RIDE JUST TO OUR SOUTH. FAST WSWRLY FLOW WILL MOVE THIS FEATURE ALONG QUICKLY...AND WE MAY NOT SEE THINGS LINGER TOO LONG IN THE DAY ON WEDNESDAY. PRECIP TYPE LESS OF A CONCERN THAN I HAD THOUGHT YSTDY...BUT STILL MAY BE COLD ENOUGH (ESP TUES NIGHT) TO PRODUCE SOME LIGHT SNOW OR FROZEN PRECIP OVER THE HIGHER TERRAIN. THE HEAVIER PRECIP SHOULD BE IN OUR SRN TIER...AND THAT SHOULD BE ALL RAIN. WL GO UP TO LIKELY POPS FOR THE SRN HALF OF CWA FOR TUES NITE AS THE EVENT LOOKS MORE CERTAIN...AND LINGER LIKLIES FOR THE SE WED AM...BUT THE AFTN SHOULD BEGIN TO DRY OUT. WRAP AROUND COULD MAKE SOME PCPN IN THE NW INTO THURS. THURS LOOKS COLDER THAN NORMS. AFTER A BRIEF BREAK IN PCPN CHCS...WE MAY GET A FAST MOVING SYSTEM TO DROP DOWN FROM THE GR8 LAKES ON FRIDAY...SO WILL HOLD ONTO CHCS THERE...TOO. THAT SHOT MAY RE-INFORCE OUR COLD AIR...SO WL GET PROGRESSIVELY COLDER ON THE MAXES FOR FRI (VS THURS). ON SATURDAY WE WILL ROLL WITH HPC PREFERENCE OF PREV (27/12Z) ECMWF SOLN AND MANUAL PROGS AND PLAY IT PARTLY CLOUDY AND DRY UNDER HIGH PRES. NEW DY7 LOOKING INCREASINGLY CLOUDY AND WET WITH A SYSTEM PERHAPS TAKING AIM AT US FROM THE SW AGAIN. PRECIP TYPE IN QUESTION (AS ALWAYS?). BUT...AT DY7 IT SHOULD BE ENOUGH JUST TO HAVE THE MENTION OF MIXED PRECIP IN THERE FOR NOW. && .CTP WATCHES/WARNINGS/ADVISORIES... PA...NONE. && AVIATION/LONG TERM...DANGELO SHORT TERM...MARTIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 506 AM EST SUN NOV 28 2004 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-291005- 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- 506 AM EST SUN NOV 28 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. RG
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rain caused flooding along Swatara Creek at Harper Tavern. The creek rose above flood stage of 9.0 feet at 18:30 EST on the 28th, crested at 9.56 feet at 23:30 EST on the 28th, then fell back below flood stage at 03:45 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, November 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: 5425769.