High winds downed trees and utility lines across portions of Central Pennsylvania. Sporadic power outages were reported.
Every event with a place to put it; 3 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 episode as NWS CTP wrote it up.
High winds downed trees and utility lines across portions of Central Pennsylvania. Sporadic power outages were reported.
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 Dec 23, 7:29 AM EST, 2 hours 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 729 AM EST SUN DEC 23 2007 .SYNOPSIS... A STRONG COLD FRONT WILL RAIN AND WINDS TODAY. WINDS OVERNIGHT TONIGHT INTO EARLY CHRISTMAS EVE. THE LARGE SCALE PATTERN THEN SHOWS A SERIES OF STRONG PACIFIC WAVES DROPPING INTO THE WESTERN US AND HEIGHTS BUILDING OVER OUR REGION. ANTICYCLONES WILL DOMINATE OUR WEATHER FOR MOST OF THE COMING WEEK. && .NEAR TERM /UNTIL 11 AM THIS MORNING/... EXPOSED AREAS WILL BE BREEZY THIS MORNING. PROTECTED VALLEY LOCATIONS SHOW CALM CONDITIONS WHICH SHOULD ERODE LATER THIS MORNING. TEMPERATURES SHOULD RISE INTO THE 40S LATER THIS MORNING. A STRONG COLD FRONT TO OUR WEST WILL INCREASE THE CHANCE OF SHOWERS IN WESTERN AREAS BETWEEN 9 AND 11 AM. FOG AND PERIOD OF DRIZZLE ARE POSSIBLE IN EASTERN AREAS THROUGH 8-10 AM. THE THREAT OF LIGHT PASSING SHOWERS WILL INCREASE OVER EASTERN AREAS AS WILL THE SOUTH-SOUTHEASTERLY WINDS. TEMPERATURES COULD RISE TO NEAR 50 BY LATE MORNING IN SOME LOCATIONS. && .SHORT TERM /11 AM THIS MORNING THROUGH 6 PM MONDAY/... AS THE STRONG FRONT MOVES ACROSS THE REGION FROM WEST TO EAST...THE SOUTHEASTERLY WINDS WILL INCREASE. THERE COULD BE SOME GUSTS TO NEAR 30 MPH LATER THIS MORNING AND EARLY AFTERNOON. MOST AREAS AHEAD OF THE FRONT WILL SEE ONLY PATCH SHOWERS. TEMPERATURES WILL MAINLY BE IN THE 40S BUT COULD RISE TO THE 50S JUST AHEAD OF THE STRONGER SHOWERS AND THE COLD FRONT. A BAND OF STRONG RAIN SHOWERS...AND PERHAPS AN ISOLATED THUNDERSTORM..WILL MOVE FROM WEST TO EAST ACROSS THE STATE LATE THIS MORNING AND THIS AFTERNOON. A FEW HOURS OF MODERATE RAIN IS EXPECTED. A FEW THUNDERSTORMS COULD BRING SOME STRONG WINDS TO THE SURFACE. MOST AREAS WILL SEE 0.5 TO 1 INCH OF RAINFALL MAINLY WITH SHOWERS JUST AHEAD...ALONG AND BEHIND THE COLD FRONT. COLD AIR WILL RUSH IN BEHIND THE FRONT THIS AFTERNOON IN THE WEST AND THIS EVENING IN THE EAST. RESIDUAL SHOWERS SHOULD TURN TO SNOW SHOWERS IN THE WEST. IT WILL TURN SHARPLY COLDER THIS AFTERNOON AND TONIGHT. THERE WILL BE STRONG GUSTY WINDS. SOME OF THE RIDGE TOPS COULD SEE WIND GUSTS OVER 60 MPH LATER THIS EVENING. MOST AREAS WILL SEE THE POTENTIAL FOR ADVISORY CATEGORY WINDS WITH GUSTS IN THE 30 TO 40 MPH RANGE. WE CUT THE PRECIPITATION OFF FAST THIS EVENING. THE SREF PLUMES SHOW MOST MEMBERS WITH THE RAIN OVER BY 2100 UTC. MOST SHOW SOME SNOW IN WESTERN AREAS WITH A CHANCE OF SNOW SHOWERS IN CENTRAL AREAS. MOST AREAS SHOULD SEE ONLY SPRINKLES OR FLURRIES OVERNIGHT...EXCEPT FOR SNOW SHOWER PORTIONS OF NW PA AND THE HIGHER ELEVATIONS OF THE WESTERN MOUNTAINS. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... CHRISTMAS EVE SHOULD BE A BREEZY DAY WITH SEASONABLE TEMPERATURES. SNOW SHOWERS ARE POSSIBLE IN THE NORTHWESTERN COUNTIES DURING THE DAY AND INTO THE EVENING. THE WINDS SHOULD SLOWLY DIMINISH IN THE EVENING. HIGH PRESSURE SHOULD DOMINATE CHRISTMAS DAY WITH PARTLY SUNNY SKIES. TEMPERATURES MAINLY IN THE 30S AND 40S. THE HIGH PRESSURE WHICH WILL PROVIDE THE QUIET WEATHER FOR CHRISTMAS SHOULD DRIFT TO OUR EAST ALLOWING A WEAKENING PACIFIC FRONT INTO THE REGION WED-THUR. THIS COULD TRIGGER SOME LIGHT SNOW OR SNOW AND RAIN ACTIVITY. PRECIPITATION IN IN ABOUT 40 PERCENT OF THE ENSEMBLE MEMBERS. HIGH PRESSURE RAPIDLY BUILDS IN THU-FRI SO THESE TWO DAYS SHOULD BE RELATIVELY QUITE WEATHER WISE. THE NEXT BEST CHANCE OF RAIN OR SNOW AND RAIN IN THE ENSEMBLES IS FOR THE WEEKEND. MOST MEMBERS SHOW SOME CHANCE OF PRECIPITATION. MOST LIKELY SCENARIO IS A LOW MOVING UP FROM THE WEST AND INTO THE GREAT LAKES. TEMPERATURES APPEAR TO BE CLOSE TO NORMAL DURING THE COURSE OF THE WEEK UNTIL LATE IN THE WEEK WHEN THE ENSEMBLES HINT AT SLIGHTLY ABOVE NORMAL TEMPERATURES AHEAD OF THE POTENTIAL RAIN OR RAIN/SNOW EVENT AROUND THE WEEKEND. && .AVIATION /12Z SUNDAY THROUGH THURSDAY/... FORECAST CONTINUES TO MAINTAIN CONSISTENCY AND THUS THE DISCUSSIONS REMAIN SIMILAR. RELATIVELY WARMER SOUTHERLY WINDS WILL CONTINUE TO INCREASE THROUGH MID MORNING AS A FRONT APPROACHES THE AREA. NEAR THE SURFACE...SOUTHEAST WINDS WILL KEEP COOLER AIR TRAPPED SO LLWS WILL BE COMMON. WINDS FROM 170-180 DEGREES UP TO 40KTS ARE POSSIBLE FROM FL020 AND UP THROUGH FROPA. SOME OF THESE WINDS WILL MIX DOWN DURING THE FIRAT HALF OF THE DAY SUNDAY AS THE FRONT APPROACHES MAKING FOR QUITE A TURBULENT DAY. IFR CLOUDS WILL CONTINUE AS LOW LEVEL MOIST AIR IS TRAPPED UNDER THE BRISK WINDS ALOFT. CIGS COULD RISE BRIEFLY AHEAD OF THE FRONT MAINLY IN THE SW AS WINDS ARE JUST A BIT MORE SOUTHWESTERLY. ALSO...AS MILDER AIR DOES MAKE ITS WAY TO THE SURFACE...IT WILL OVERRUN LINGERING SLEET AND SNOW COVER...SO FOG IS POSSIBLE OVER THE HIGHER ELEVATION FIELDS. MOST OF THE RAIN TODAY SHOULD BE CONFINED TO THE FEW HOURS CLOSEST TO THE COLD FRONTAL PASSAGE...WHICH SHOULD BE AROUND 18-19Z IN THE WEST AND 22-23Z IN THE FAR EASTERN COUNTIES. BEHIND THE FRONT LATER TODAY INTO TONIGHT...THE SFC WINDS WILL TURN WESTERLY...INCREASE AND BECOME QUITE GUSTY. THE WESTERLY UPSLOPE FLOW WILL KEEP LOWER CIGS AND PERHAPS SOME -SHSN IN THE HIGHER TERRAIN SITES OF KBFD/KJST BUT REMAINDER OF CWA WILL TRANSITION BACK TO VFR FOR MONDAY AND TUESDAY. HIGH PRESSURE FOR WED...THEN A WEAKENING FRONT FOR THUR COULD TRIGGER SOME LIGHT SNOW AND RAIN ACTIVITY AND REDUCE VSBY/CIGS. && .CTP WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY FROM NOON TODAY TO 2 AM EST MONDAY FOR PAZ004>006-010>012-017>019-025>028-034>037-041-042-045-046- 049>053-056>059-063>066. HIGH WIND WARNING FROM NOON TODAY TO 2 AM EST MONDAY FOR PAZ024-033. && SYNOPSIS...GRUMM NEAR TERM...RXR SHORT TERM...GRUMM LONG TERM...GRUMM AVIATION...RXR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 324 AM EST SUN DEC 23 2007 PAZ004>006-010>012-017>019-025>028-034>037-041-042-045-046-049>053- 056>059-063>066-240830- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA- BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-SULLIVAN- SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND- ADAMS-YORK-LANCASTER- 324 AM EST SUN DEC 23 2007 ...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 2 AM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED DURING THIS PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ024-033-240830- CAMBRIA-SOMERSET- 324 AM EST SUN DEC 23 2007 ...HIGH WIND WARNING IN EFFECT FROM NOON TODAY TO 2 AM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HIGH WIND WARNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED DURING THIS PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
3 high wind. Local standard time, as filed.
Somerset County 911 center reported trees and wires down across the northern part of the County.
Dauphin County emergency management reported trees and wires down in the Middletown area. The high winds were non-convective in nature.
Cumberland County emergency management reported trees and wires down in Carlisle, Camp Hill and Lower Allen. The high winds were non-convective in nature.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2007Every state in 2007This day in weather historyWarnings in Pennsylvania, December 2007
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: 66774, 66773, 66772.