High winds brought down trees and wires during the afternoon and evening hours. The high winds were the result of a very tight pressure gradient following the departure of a significant winter storm.
Every event with a place to put it; 2 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 brought down trees and wires during the afternoon and evening hours. The high winds were the result of a very tight pressure gradient following the departure of a significant winter storm. The winds were non-convective in nature. Regional ASOS observations recorded peak gusts as high as 51 mph.
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 16, 1:34 PM EST, 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 134 PM EST SUN DEC 16 2007 .SYNOPSIS... COLDER AIR ALOFT RACED EAST ACROSS THE REGION DURING THE LATE MORNING...CHANGING MUCH OF THE PRECIP BACK TO SNOW (EXCEPT FOR THE FAR ERN COUNTIES OF PENN. LOW PRESSURE INTENSIFYING ALONG THE SOUTHERN NEW ENGLAND COAST LATE TODAY WILL COMBINE WITH HIGH PRESSURE OVER THE MIDWEST TO BRING STRONG GUSTY WIND TO THE REGION LATER TODAY AND TONIGHT WITH AREAS OF SNOW CONTINUING ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...BRINGING ANOTHER 2 TO 4 INCHES OF SNOW TO MANY LOCATIONS. HIGH PRESSURE WILL BUILD IN FOR MID WEEK BEFORE A SERIES OF WEAK FRONTS BRINGS SCATTERED LIGHT PRECIPITATION BACK TO THE REGION FOR LATE IN THE WEEK. && .NEAR TERM /UNTIL 7 PM THIS EVENING/... HAVE EXTENDED THE WINTER STORM WARNING THROUGH 4 PM TO ACCOUNT FOR ANOTHER ROUND OF SNOW ASSOCIATED WITH THE UPPER LOW HEADING EAST FROM OHIO. EMBEDDED AREAS OF MDT TO HEAVY SNOW WITHIN THE COMMA HEAD WILL BRING ANOTHER 2 TO 4 INCHES TO MANY LOCATIONS THROUGHOUT THE NORTHERN MTNS. 3 HOURLY PRESSURE CHANGE MAX OF 8-10 HPA CROSSES NRN PENN BETWEEN 00Z AND 03Z MONDAY...WITH RISES OF 6-7 HPA/3 HOURS FURTHER SOUTH. THIS WILL HELP TO PRODUCE AN AREA OF STRONG AND LIKELY DAMAGING WIND GUSTS (ESPECIALLY ACROSS SRN PENN...CONSIDERING MANY TREES IN THAT AREA ARE COATED WITH UP ONE QUARTER OF AN INCH OF ICE FROM THE OVERNIGHT FZRA) BEGINNING ACROSS THE LAUREL HIGHLANDS DURING THE MID AFTERNOON HOURS AND OVERSPREADING THE REMAINDER OF CENTRAL PENN AND THE SUSQ VALLEY LATE TODAY. ISSUED A HIGH WIND WARNING FOR 4 COUNTIES IN SW PENN WHERE SHORT RANGE MESOSCALE MODELS (AND BUFKIT NAM VERTICAL WIND PROFILE) SHOW A BELT OF 60 KT WIND JUST 2-3 KFT AGL. A SNOW AND BLOWING SNOW ADVISORY WAS ALSO ISSUED FOR THIS AFTERNOON AND TONIGHT ACROSS CAMBRIA AND SOMERSET COUNTIES WHERE ANOTHER 2-5 INCHES OF SNOW WILL ACCUMULATE BY DAYBREAK MONDAY. TEMPS MAY RISE A FEW MORE DEG ACROSS THE SE ZONES...BUT WILL STAY STEADY IN THE U20S TO LOWER 30S...OR SLOWLY FALL ACROSS THE CENTRAL AND WRN MTNS WHERE CLOUD COVER WILL THICKEN UP WITH PERIODS OF SNOW FALLING. && .SHORT TERM /7 PM THIS EVENING THROUGH 6 PM MONDAY/... AS THE CONSOLIDATING LOW PRESSURE AREAS LIFT NORTHEAST THRU NEW ENGLAND SUNDAY NIGHT...EXPECT LAKE EFFECT SNOWFALL TO DEVELOP ACROSS THE NORTHWEST MOUNTAINS. SREF 850MB TEMPS PLUMMET TO -12 TO -14C OR 1-2SD BELOW NORMAL BY 06Z MONDAY. THE COLD AND VERY BRISK OVER LAKE FETCH ON THE BACKSIDE OF THE DEPARTING SFC LOW SHOULD RESULT IN ADVISORY TYPE ACCUMS BASED ON FCST SOUNDINGS AND THE LATEST WWD GRAPHICS ACROSS PORTIONS OF THE W/NW MOUNTAINS...ESPECIALLY OVER THE SNOWBELT REGION OF WARREN CO. HAVE INCREASED POPS TO CATEGORICAL FOR SUNDAY NIGHT...WHICH IS MORE IN LINE WITH THE SREF AND ABOVE MET/MAV BLEND. WINDS WILL RELAX BY LATER MONDAY AS SURFACE HIGH NUDGES IN FROM THE TN VALLEY. WESTERLY FETCH SHOULD STILL SUPPORT BKN/OVC STRATO CU AND A FEW -SHSN ACROSS THE NW MTNS. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... ONCE AGAIN THE MAIN ACTION AND ATTENTION HAS BEEN IN THE VERY NEAR TERM. WE SEE A WEAK RIDGE INTO MID WEEK BEFORE A SERIES OF WEAK WAVES MAKE FOR MORE UNSETTLED CONDITIONS FOR LATE WEEK. TIMING MAY HAVE MUCH TO DO WITH PRECIP TYPES WITH AT LEAST THE LEAD WAVE HAVING SUGGESTIONS OF WARM AIR ALOFT OVER RIDING SOME COOL OVERNIGHT TEMPS WED NIGHT INTO THURS. QPF LOOKS MEAGER BUT WE COULD BE DEALING WITH ANOTHER LIGHT WINTRY MIX. FAR TOO EARLY FOR DETAILS AS WE STILL HAVE THE CURRENT STORM TO DEAL WITH. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... AN FEW HOUR WINDOW OF GENERALLY VFR FLYING CONDITIONS WILL OVERSPREAD SCENT PENN DURING THE MID TO LATE AFTERNOON HOURS WITHIN A FAIRLY DEEP DRY SLOT BETWEEN THE 2 AREAS OF LOW PRESSURE (ONE NEAR BUFFALO NEW YORK...AND THE SECOND JUST SOUTH OF NEW YORK CITY) ACROSS NRN AND WESTERN PENN...MVFR TO IFR CIGS AND VSBYS WILL BE WIDESPREAD THROUGH TONIGHT...WITH POCKETS OF LIFR IN MODERATE TO HEAVY SNOW/LAKE EFFECT SNOW. ELSEWHERE...WE SHOULD SEE MAINLY VFR CLOUDS AND CIGS WITH PERIODS OF MVFR CIGS AND VSBYS IN SNOW SHOWERS. AS THE SW TO WEST WINDS DEVELOP ACROSS THE LOWER SUSQ VALLEY LATE TODAY...THE CURRENT IFR/MVFR CIGS WILL IMPROVE TO MAINLY VFR CIGS AND VSBYS AND CONTINUE THROUGH MONDAY. CONDITIONS IMPROVE SIGNIFICANTLY IN ALL AREAS BY TUE. A FEW SNOW SHOWERS POSSIBLE ON WED...THEN MORE ADVERSE FLYING WEATHER RETURNS FOR THURSDAY INTO FRIDAY AS A MORE ORGANIZED AREA OF LOW PRESSURE MOVES NORTHEAST ACROSS THE OHIO RIVER VALLEY AND BRINGS RAIN OR SNOW TO THE SOUTHEAST HALF OF THE STATE...WITH SNOW LIKELY ACROSS THE NORTHERN PART OF PENNSYLVANIA. && .CTP WATCHES/WARNINGS/ADVISORIES... WINTER STORM WARNING UNTIL 4 PM EST THIS AFTERNOON FOR PAZ004>006-010>012-017-018-037-041-042. WIND ADVISORY FROM 4 PM THIS AFTERNOON TO 1 PM EST MONDAY FOR PAZ004>006-010>012-017>019-026>028-035>037-041-042-045-046- 049>053-056>059-063>066. HIGH WIND WARNING UNTIL 2 AM EST MONDAY FOR PAZ024-025-033-034. SNOW AND BLOWING SNOW ADVISORY UNTIL 7 AM EST MONDAY FOR PAZ024-033. WIND ADVISORY FROM 2 AM TO 1 PM EST MONDAY FOR PAZ024-025-033- 034. LAKE EFFECT SNOW AND BLOWING SNOW ADVISORY FROM 4 PM THIS AFTERNOON TO 7 AM EST MONDAY FOR PAZ004-005. && SYNOPSIS...LACORTE/LAMBERT NEAR TERM...LAMBERT SHORT TERM...LACORTE/LAMBERT LONG TERM...LACORTE AVIATION...LAMBERT/MARTIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1142 AM EST SUN DEC 16 2007 PAZ006-010>012-017-018-037-041-042-171645- POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE-TIOGA- NORTHERN LYCOMING-SULLIVAN- 1142 AM EST SUN DEC 16 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 PM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT SNOWFALL...ICE ACCUMULATION AND WIND DAMAGE TO THE NATIONAL WEATHER SERVICE IN STATE COLLEGE. PAZ024-033-171645- CAMBRIA-SOMERSET- 1142 AM EST SUN DEC 16 2007 ...HIGH WIND WARNING IN EFFECT UNTIL 2 AM EST MONDAY... ...SNOW AND BLOWING SNOW ADVISORY IN EFFECT UNTIL 7 AM EST MONDAY... ...WIND ADVISORY IN EFFECT FROM 2 AM TO 1 PM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON 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. SNOW AND BLOWING SNOW ADVISORY. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SNOW AND BLOWING SNOW ADVISORY. WIND ADVISORY. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT SNOWFALL...ICE ACCUMULATION AND WIND DAMAGE TO THE NATIONAL WEATHER SERVICE IN STATE COLLEGE. PAZ025-034-171645- BLAIR-BEDFORD- 1142 AM EST SUN DEC 16 2007 ...HIGH WIND WARNING IN EFFECT UNTIL 2 AM EST MONDAY... ...WIND ADVISORY IN EFFECT FROM 2 AM TO 1 PM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON 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. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT SNOWFALL...ICE ACCUMULATION AND WIND DAMAGE TO THE NATIONAL WEATHER SERVICE IN STATE COLLEGE. PAZ004-005-171645- WARREN-MCKEAN- 1142 AM EST SUN DEC 16 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... ...LAKE EFFECT SNOW AND BLOWING SNOW ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM EST MONDAY... ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 PM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WINTER STORM WARNING. WIND ADVISORY. LAKE EFFECT SNOW AND BLOWING SNOW ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. LAKE EFFECT SNOW AND BLOWING SNOW ADVISORY. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT SNOWFALL...ICE ACCUMULATION AND WIND DAMAGE TO THE NATIONAL WEATHER SERVICE IN STATE COLLEGE. PAZ019-026>028-035-036-045-046-049>053-056>059-063>066-171645- SOUTHERN CENTRE-HUNTINGDON-MIFFLIN-JUNIATA-FULTON-FRANKLIN- SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND- ADAMS-YORK-LANCASTER- 1142 AM EST SUN DEC 16 2007 ...WIND ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 PM EST MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON 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 PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT SNOWFALL...ICE ACCUMULATION AND WIND DAMAGE TO THE NATIONAL WEATHER SERVICE IN STATE COLLEGE. STEINBUGL
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1237 PM EST SUN DEC 16 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1115 AM ICE STORM NEW OXFORD 39.86N 77.06W
12/16/2007 ADAMS PA TRAINED SPOTTER
NUMEROUS TREES AND WIRES DOWN.
1125 AM ICE STORM YORK 39.96N 76.73W
12/16/2007 YORK PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1130 AM ICE STORM MANHEIM 40.16N 76.40W
12/16/2007 LANCASTER PA TRAINED SPOTTER
NUMEROUS TREES AND WIRES DOWN.
1135 AM ICE STORM LEBANON 40.34N 76.42W
12/16/2007 LEBANON PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1140 AM ICE STORM HARRISBURG 40.28N 76.88W
12/16/2007 DAUPHIN PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE SOUTHERN HALF OF
THE COUNTY.
1145 AM ICE STORM POTTSVILLE 40.68N 76.21W
12/16/2007 SCHUYLKILL PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1150 AM ICE STORM CHAMBERSBURG 39.93N 77.66W
12/16/2007 FRANKLIN PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1155 AM ICE STORM CARLISLE 40.20N 77.20W
12/16/2007 CUMBERLAND PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1155 AM ICE STORM NEWPORT 40.48N 77.13W
12/16/2007 PERRY PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
&&
TYBURSKIPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1243 PM EST SUN DEC 16 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM ICE STORM 3 N NEW OXFORD 39.91N 77.06W
12/16/2007 ADAMS PA TRAINED SPOTTER
ONE QUARTER INCH OF ICE ON TREES.
0945 AM ICE STORM UPPER STRASBURG 40.02N 77.70W
12/16/2007 FRANKLIN PA TRAINED SPOTTER
ONE QUARTER INCH OF ICE ON TREES.
1115 AM ICE STORM NEW OXFORD 39.86N 77.06W
12/16/2007 ADAMS PA TRAINED SPOTTER
NUMEROUS TREES AND WIRES DOWN.
1125 AM ICE STORM YORK 39.96N 76.73W
12/16/2007 YORK PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1130 AM ICE STORM MANHEIM 40.16N 76.40W
12/16/2007 LANCASTER PA TRAINED SPOTTER
NUMEROUS TREES AND WIRES DOWN.
1135 AM ICE STORM LEBANON 40.34N 76.42W
12/16/2007 LEBANON PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1140 AM ICE STORM HARRISBURG 40.28N 76.88W
12/16/2007 DAUPHIN PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE SOUTHERN HALF OF
THE COUNTY.
1145 AM ICE STORM POTTSVILLE 40.68N 76.21W
12/16/2007 SCHUYLKILL PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1150 AM ICE STORM CHAMBERSBURG 39.93N 77.66W
12/16/2007 FRANKLIN PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1155 AM ICE STORM CARLISLE 40.20N 77.20W
12/16/2007 CUMBERLAND PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
1155 AM ICE STORM NEWPORT 40.48N 77.13W
12/16/2007 PERRY PA EMERGENCY MNGR
NUMEROUS TREES AND WIRES DOWN ACROSS THE COUNTY.
&&
TYBURSKIThe national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
Cambria County emergency management reported trees and wires down due to high winds. The Johnstown Airport ASOS reported a peak gust of 51 mph.
Blair County emergency management reported a tree down on a house in Martinsburg due to high winds. The Altoona ASOS at the Blair County Airport reported a peak gust of 48 mph.
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: 66769, 66770.