1 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 State College, PA wrote its last area forecast discussion before the first event at May 28, 8:45 AM EST, 4 hours 30 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE STATE COLLEGE PA 945 AM EDT SAT MAY 28 2005 .SHORT TERM (REST OF TODAY)... QUICK UPDATE TO ACCOUNT FOR SHORT TERM TRENDS AS AREA OF PRECIP - ALTHOUGH SLOWLY WEAKENING - CONTINUES TO ENCROACH ON WESTERN PORTION OF CWA. WILL RAISE POPS THERE FOR THE REMAINDER OF THE MORNING AND LEAVE THE AFTERNOON PORTION BASICALLY UNCHANGED WITH NUMEROUS SHOWERS ALONG WITH SCATTERED TSTORMS EXPECTED. && .PREVIOUS DISCUSSION... (ISSUED 222 AM EDT SAT MAY 28 2005) SHORT TERM (TODAY THROUGH MONDAY NIGHT)... NO BIG CHANGES FOR THE FORECAST IN STORE...AS THE UPPER LOWS DROPS THRU THE UPPER GREAT LAKES AND TIGHTENS THE JET OVERHEAD. THIS WILL ADD SOME EXCITEMENT TO THE DAY...IN THE FORM OF SHOWERS AND THUNDERSTORMS. THE MAIN SHORTWAVE FOR THE DAY IS OVER THE IN/OH BORDER ATTM...AND WILL PASS OVERHEAD DURING THE MIDDLE OF THE DAY AND HELP TO FIRE UP NUMEROUS SHOWERS AND THUNDERSTORMS. WILL HOLD ZFP ISSUANCE UNTIL THOSE SHOWERS OV TIOGA CO HAVE DIED/MOVED EAST. POPS WILL THEN BE NIL UNTIL THE SHOWERS MOVE IN FROM THE WEST LATER THIS MORNING. WILL UP POPS TO LIKELIES FOR MOST EVERYONE TODAY...AS FORCING THERE...BUT MOISTURE STILL LACKING (AS YESTERDAY). WE SHOULD SEE NUMEROUS SHOWERS AND THUNDERSTORMS...BUT THEY WILL BE FAIRLY WEAK. WITH CONTINUED DRY LOWER LAYERS (ALMOST INVERTED V SOUNDING) WE MAY STILL GET A FEW GUSTS TO 30-40 MPH...BUT SVR NOT LIKELY TODAY AS TIMING OF THE SHORT WAVE JUST A LITTLE TOO EARLY FOR PEAK HEATING TO ADD THAT MUCH MORE LIFT AND INSTAB. WILL KEEP SVR WORDING OUT OF THE ZFP...AND HOLD OFF ON ANY SPS...AS SPC SLIGHT RISK AREA RIGHT UP TO OUR SRN BORDER. ACTIVITY SHOULD DIE DOWN QUITE A BIT AFT SUNSET...BUT WILL LINGER A LOW CHC POP FOR MUCH OF THE NIGHT. THEN LOOKS DRY WITH BRIEF RIDGING FOR SUN MORNING. MOST OF THE AREA COULD ALSO STAY DRY ON SUNDAY...WITH HIGHEST CHCS IN THE NORTH/EAST SUN AFTN/EVENING. MONDAY IS THAT DAY THAT MORE PEOPLE ARE WORRYING ABOUT (FOR GOOD REASONS). MONDAY SHOULD BE A STELLAR START TO THE SUMMER...WITH CLIMO MAXES (67-74) ACROSS THE BOARD AND MOSTLY SUNNY SKIES. HOWEVER...I WILL BE ADDING SOME (HIDDEN FOR NOW) 20 POPS TO THE AFTERNOON FOR THE CWA...AND A 30 POP TO THE WESTERN ZNS...TAKING BABY STEPS TO ADD THE HINT OF SCT SHOWERS IN THE AFTN. GFS AND NAM GUIDANCE DIFFER GREATLY IN THE CHCS FOR PRECIP MONDAY AND MON NIGHT...BUT SEE ENUF SUPPORT NOW IN THE 18Z MREFS AND EXTRAPOLATION FROM MOST RECENT SREFS. JUST HATE TO RAIN ON THE PARADE(S)...SO WILL KEEP CHC POPS AWAY FROM MOST PLACES (ALL BUT THE WEST) UNTIL MON NIGHT PERIOD...AS WE HAVE THEM CURRENTLY. TAKE THE 20 POPS FOR WHAT THEY ARE WORTH AT THIS RANGE...THOUGH...NOT EVEN CLIMO (BFD 12 HR CLIMO POP FOR THIS TIME OF YEAR IS 33 PCT). LONG TERM (TUESDAY THROUGH FRIDAY)... NO CHANGES TO THIS FRAME OF THE FCST...AS NEW DETAILS ARE TOUGH TO COME BY. SUFFICE IT TO SAY THAT THINGS LOOK SEASONABLY MILD AND FAIRLY DRY AFTER TUESDAY...WHICH JUST HAPPENS TO BE AN HISTORICALLY SIGNIFICANT MODAL DAY FOR SEVERE WEATHER IN CENTRAL PA (JOHNSTOWN FLOOD OF 1889, AND THE SIGNIFICANT TORNADO OUTBREAKS OF 1985 AND 1998, ETC). SO...IS IT EVER TOO EARLY TO THINK THAT SVR WX MAY HAPPEN ON THE 31ST?? AVIATION... ONCE AGAIN TODAY...VFR CONDS WILL BE THE RULE...WITH THE ONLY EXCEPTION A FEW HOUR PERIOD OF MVFR POSSIBLE AT KJST ASSOC WITH SHOWER ACTIVITY LATER THIS MORNING. OTHERWISE...SHOWERS EXPECTED TO BE MORE WIDESPREAD THAN YESTERDAY...WITH ADDITIONAL MID-LEVEL CLOUD COVER AS WELL. FOR 06Z TAFS...TRIED TO PINPOINT BEST 4-HOUR CHANCE FOR SHOWERS IN TEMPOS...WHICH LOOKS LIKE MID MORNING TO EARLY AFTN WEST AND LATE MORNING TO MID AFTN EAST. THEREAFTER...TAPERING TO SCT SHOWERS. DID NOT MENTION ANY THUNDER IN THE TAFS...AS ATMOS A BIT MORE STABLE TODAY. HOWEVER...A STRAY TSRA CANNOT BE COMPLETELY RULED OUT. WINDS WILL BE WEAKER THAN YESTERDAY...BUT WILL STILL LIKELY GUST TO AROUND 15 KTS DURING THE DAYLIGHT HOURS. && .CTP WATCHES/WARNINGS/ADVISORIES... PA...NONE. && SHORT TERM...RXR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 311 AM EDT SAT MAY 28 2005 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-290710- 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- 311 AM EDT SAT MAY 28 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY: NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. DANGELO
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 132 PM EDT SAT MAY 28 2005 PAZ065-066-281830- LANCASTER-YORK- 132 PM EDT SAT MAY 28 2005 ...STRONG THUNDERSTORMS WILL AFFECT YORK AND LANCASTER COUNTIES... AT 130 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING LINE OF STRONG THUNDERSTORMS EXTENDING FROM HANOVER TO YORK TO MOUNT JOY...MOVING EAST AT 30 MPH. THE THUNDERSTORMS WILL AFFECT MUCH OF YORK AND LANCASTER COUNTIES BETWEEN 130 PM AND 3 PM. BRIEF WIND GUSTS UP TO 40 MPH...ALONG WITH BRIEF HEAVY RAINFALL AND DANGEROUS CLOUD TO GROUND LIGHTNING ARE POSSIBLE WITH THESE STORMS. IF YOU ARE OUTDOORS...MOVE INDOORS UNTIL THIS STORM PASSES. RXR
The Dover AFB radar (KDOX), 136 km away, was scanning. The volume nearest the first event began at 18:15 UTC.
1 thunderstorm wind. Local standard time, as filed.
A thunderstorm produced downburst wind damage in southeast York County in Lower Chanceford Township. Between 40 and 50 trees were blown down in a damage swath about 100 yards wide and 300 yards long. Damage was concentrated near the Lock 12 historic area, just to the south of Holtwood Dam.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2005Every state in 2005This day in weather historyWarnings in Pennsylvania, May 2005
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: 5446097.