A major winter storm brought heavy snow to central Pennsylvania from the early morning hours of February 13th through the late afternoon of the 14th.
Every event with a place to put it; 11 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.
A major winter storm brought heavy snow to central Pennsylvania from the early morning hours of February 13th through the late afternoon of the 14th.
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 Feb 13, 3:50 AM EST, 3 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 350 AM EST TUE FEB 13 2007 .SHORT TERM /TODAY THROUGH WEDNESDAY NIGHT/... ANY WAY YOU SLICE IT...THIS WILL BE A STORM THAT WILL STICK IN OUR MEMORY FOR QUITE SOME TIME WITH RESPECT TO WIDESPREAD VERY HEAVY SNOW...AND PERHAPS SOME HEAVY ICE ACCUMULATION ACROSS OUR FAR SE ZONES NEAR KTHV AND KLNS. LOW PRESSURE /1002 HPA/ OVER THE SOUTHERN MISS VALLEY EARLY THIS MORNING...IS LINKED TO THE LEFT EXIT REGION OF A 135 KT SOUTHERN STREAM UPPER JET ACROSS THE LOWER RIO GRANDE VALLEY. THIS LOW WILL MOVE ENE THROUGH THE TENN VALLEY LATE TODAY BEFORE WEAKENING AS A STRONG COUPLED JET STRUCTURE AND NEG TILT UPPER TROUGH FOCUSES INTENSE UVVEL AND RAPID SFC CYCLOGENESIS NEAR THE VA/NC COAST EARLY WED MORNING. THIS STORM WILL QUICKLY DEEPEN TO BELOW 980 HPA OFF THE NEW JERSEY/LONG ISLAND COAST WED AFTERNOON. STEADY SNOW WILL OVERSPREAD THE SOUTHERN AND WESTERN ZONES DURING THE EARLY TO MID MORNING HOURS...AND LIKELY BEGIN ACROSS THE NE NEAR OF BEFORE THE NOON HOUR. VERY STRONG AND PERSISTENT 850-700 HPA FRONTOGENESIS AND CORRESPONDING UVVEL WILL OCCUR FROM LATER THIS AFTERNOON THROUGH WED MORNING...ESP ACROSS THE NRN HALF OF PENN. THIS AREA OF INTENSE UPWARD FORCING WILL SHIFT TO THE SUSQ VALLEY AND POINTS EAST WED AFTERNOON AND EVENING. THE BEST VERTICAL MOTION IS LOCATED NEAR OR JUST A FEW KFT BELOW THE MAX DENDRITIC SNOW GROWTH THERMAL RIBBON THROUGH THE FIRST HALF OF TONIGHT WHICH WILL SUPPORT WIDESPREAD MODERATE TO HEAVY SNOW. SNOWFALL RATES OF 1 TO 2 INCHES AREA LIKELY ACROSS THE CENTRAL AND NORTH LATE TODAY THROUGH TONIGHT. A WEDGE OF SLIGHTLY ABOVE FREEZING AIR WILL BE PUSHED NW BY AN IMPRESSIVE 60-65 KT SOUTH TO SE LLVL JET /RANKING 3-4 STANDARD DEVIATIONS FROM NORMAL IN BOTH THE U AND V COMPONENTS/...CAUSING A MIX OR CHANGE TO SLEET ACROSS SCENT PENN AND THE MIDDLE/LOWER SUSQ VALLEY LATER TONIGHT. 00Z MREF PLUME DIAGRAMS SHOW BETWEEN 1.25 AND 1.50 INCHES OF QPF FALLING ALMOST ENTIRELY IN THE FORM OF SNOW NORTHWEST OF A LINE FROM KIDI TO KUNV AND KELM WITH SNOW WATER RATIOS EXPECTED TO BE BETWEEN 14:1 AND 18:1. THIS LEADS TO 36 HOUR STORM TOTAL SNOWFALL OF ROUGHLY 16 TO 24 INCHES WITH THE NCENT MTNS COMING IN ON TOP AS SOME AREAS COULD SEE OVER 2 FEET IF COLD CONVEYOR BELT/TRAILING DEFORMATION SNOWS LINGER THROUGH MUCH OF WED AFTERNOON. NEAR AND TO THE SE OF A LINE FROM KJST TO KUNV AND KIPT...AROUND AN INCH OF QPF WILL FALL AS SNOW...WITH AROUND ONE HALF INCH FALLING AS A SLEET. THIS SHOULD HOLD DOWN ACCUMULATIONS A TAD...BUT STILL A HEFTY 12 TO 18 INCHES OF SNOW CAN BE EXPECTED BY WED AFTERNOON. ACROSS THE SE...AFTER SEVERAL INCHES OF SNOW TODAY INTO THIS EVENING...WE/RE LOOKING AT A PROBABLE CHANGEOVER TO ALL SLEET AND FREEZING RAIN TONIGHT AND WEDNESDAY MORNING...BEFORE A CHANGE BACK TO A PERIOD OF STEADY SNOW LATE WED MORNING THROUGH THE AFTERNOON HOURS. 00Z MREF AND 03Z SREF EACH SHOW A 2 INCH...36 HOUR QPF BULLSEYE OVER THE NORTH OR EASTERN PORTION OF OUR CWA /THE SREF ACROSS THE SUSQ VALLEY WITH THE MREF BETWEEN KUNV AND KELM/. THIS SUPPORTS ARE CURRENT PROJECTIONS AND TRENDS TOWARD HIGHER SNOW AMOUNTS...ESP FOR CENTRAL AND NRN PENN. CURRENT WINTER STORM...AND HEAVY SNOW WARNING LOOK IN GREAT SHAPE. WILL BE ADJUSTING TOTAL SNOWFALL UPWARD THOUGH...MAINLY ACROSS CENTRAL AND NORTHERN PENN. && .LONG TERM /THURSDAY THROUGH MONDAY/... A RETURN OF BITTERLY COLD AIR...AND BLOWING AND DRIFTING SNOW WILL PROLONG POOR TRAVEL CONDITIONS WEDNESDAY NIGHT INTO THURSDAY. NO CHANGES MADE AT THIS POINT TO THE EXTENDED/LATE WEEK AND WEEKEND PORTION OF THE FCST. && .AVIATION /09Z-06Z/... DETERIORATING WEATHER CONDITIONS WILL HAVE A SIGNIFICANT IMPACT ON AVIATION OVER THE NEXT 24-36 HOURS AS A WINTER STORM AFFECTS THE REGION. EARLY THIS MORNING CONDITIONS REMAIN VFR...BUT DEVELOPING STORM IN TENNESSEE VALLEY HAS LOWER CIGS AND LIGHT SNOW KNOCKING ON THE DOOR TO OUR SOUTHWEST. THESE WILL SPREAD FROM SW TO NE BETWEEN 10Z-13Z INITIALLY BRINGING MVFR CONDITIONS AND THEN DROPPING TO WIDESPREAD IFR EARLY THIS AFTERNOON IN THE WEST AND BY LATE AFTERNOON IN THE EAST. THE VERY LOW CIGS AND REDUCED VISIBILITIES FROM HEAVY SNOW AND SLEET /AND FREEZING RAIN IN THE LOWER SUSQ VALLEY INCLUDING KMDT/ WILL PERSIST THROUGH TONIGHT AS STORM REDEVELOPS OFF THE EAST COAST AND PUSHES NORTHWARD INTO NEW ENGLAND. PRECIP BEGINS TO TAPER OFF WED MORNING...AND IFR CONDITIONS WILL PERSIST THROUGH AROUND 18Z WED BEFORE AN IMPROVEMENT TO MVFR. CONDITIONS WILL IMPROVE FURTHER BY WED NIGHT IN THE CENTRAL MOUNTAINS AND SUSQ VALLEY...BUT MVFR WILL PERSIST IN THE HIGHER ELEVATIONS WITH SCATTERED SNOW SHOWERS. WINDS AT THE SURFACE WILL START OFF LIGHT FROM THE NORTHEAST AND BECOME EASTERLY AT 10-15 MPH THROUGH TONIGHT. IN THE WAKE OF THIS STORM SYSTEM ON WED...WINDS QUICKLY TURN NORTHWEST AND INCREASE TO 15-25 MPH WITH HIGHER GUSTS. 925MB WINDS /AROUND 1500-2000 FT/ WILL REMAIN FROM THE EAST...AND IN THE SUSQ VALLEY WILL INCREASE TO NEAR 40 KTS. A BIT HIGHER AT 850MB SOUTHEAST WINDS WILL DEVELOP TODAY AND INCREASE TO 40 KTS BY 00Z. BY 06Z IN THE SUSQ VALLEY THEY WILL INCREASE FURTHER TO 50-55 KTS. BECAUSE THESE WINDS WILL TRANSPORT SOME WARMER TEMPS INTO THE LOWER SUSQ...THIS REGION WILL ALSO BE THE MOST SUSCEPTIBLE TO ICING BELOW THIS WARM LAYER IN THE LOWER 3000-5000 FT OF THE ATMOSPHERE AS FREEZING RAIN AND SLEET FALL TO THE SURFACE. WINDS AT 925MB AND 850MB WILL ALSO BE TURNING NW BY WED AFTERNOON AND INCREASING. EXPECT WIND SPEEDS OF 30-50 KTS TO BRING A BUMPY RIDE. && .CTP WATCHES/WARNINGS/ADVISORIES... HEAVY SNOW WARNING FROM 9 AM THIS MORNING TO 4 PM EST WEDNESDAY FOR PAZ004>006-010>012-017-018-037-041-042. WINTER STORM WARNING FROM 9 AM THIS MORNING TO 4 PM EST WEDNESDAY FOR PAZ045-046-049>053-058. WINTER STORM WARNING UNTIL 4 PM EST WEDNESDAY FOR PAZ024-033. WINTER STORM WARNING UNTIL 4 PM EST WEDNESDAY FOR PAZ019- 025>028-034>036-056-057-059-063>066. && SHORT TERM...LAMBERT LONG TERM...LAMBERT AVIATION...RXR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 628 AM EST TUE FEB 13 2007 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046- 049>053-056>059-063>066-141130- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING- SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON- CUMBERLAND-ADAMS-YORK-LANCASTER- 628 AM EST TUE FEB 13 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT ...A HEAVY SNOW WARNING IS IN EFFECT ACROSS THE NORTHERN MOUNTAINS OF PENNSYLVANIA FROM 9 AM TODAY THROUGH WEDNESDAY AFTERNOON... ...WINTER STORM WARNINGS COVER THE REMAINDER OF CENTRAL PENNSYLVANIA THROUGH 4 PM WEDNESDAY... SNOW WILL GRADUALLY OVERSPREAD THE REGION FROM THE SOUTHWEST THIS MORNING...AND BECOME HEAVIER THIS AFTERNOON. ACCUMULATIONS BY DUSK WILL LIKELY RANGE FROM 3 OR 4 INCHES NORTHEAST OF WILLIAMSPORT...TO AS MUCH AS 8 INCHES ACROSS THE LAUREL HIGHLANDS NEAR JOHNSTOWN AND SOMERSET. A LAYER OF SLIGHTLY ABOVE FREEZING AIR WILL PUSH INTO THE STATE FROM THE SOUTH OVERNIGHT...LIKELY CAUSING THE SNOW TO CHANGE TO SLEET AND FREEZING RAIN ACROSS THE SOUTHERN TIER COUNTIES AND LOWER SUSQUEHANNA RIVER VALLEY. SIGNIFICANT ICE ACCUMULATION OF OVER ONE QUARTER OF AN INCH IS POSSIBLE LATE TONIGHT AND WEDNESDAY MORNING ON TOP OF SEVERAL INCHES OF SNOW FROM HARRISBURG...SOUTH AND EAST. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ANY MIXED PRECIPITATION ACROSS THE SOUTH CENTRAL MOUNTAINS AND SUSQUEHANNA VALLEY EARLY WEDNESDAY WILL CHANGE BACK TO ALL SNOW BY THE AFTERNOON AS THE LOW PRESSURE AREA INTENSIFIES OFF THE NEW JERSEY COAST. ADDITIONAL SIGNIFICANT ACCUMULATION OF SNOW IS LIKELY ACROSS THE CENTRAL SUSQUEHANNA VALLEY AND NORTH CENTRAL MOUNTAINS OF PENNSYLVANIA ON WEDNESDAY. STORM TOTAL SNOWFALL WILL RANGE FROM 6 TO 10 INCHES ACROSS THE SOUTHERN TIER COUNTIES...AND LOWER SUSQUEHANNA VALLEY...WITH A GENERAL 12 TO 18 INCHES OF SNOW FALLING ACROSS MUCH OF CENTRAL PENNSYLVANIA TO THE NORTH OF ROUTE 22. THE HEAVIEST SNOW WILL FALL ACROSS THE NORTHERN MOUNTAINS WHERE 18 TO 24 INCHES IS LIKELY. AS EASTERLY WINDS INCREASE TONIGHT...THEN SWITCH TO THE NORTH AND NORTHWEST ON WEDNESDAY...SIGNIFICANT BLOWING AND DRIFTING OF THE SNOW WILL OCCUR. NEAR BLIZZARD CONDITIONS COULD OCCUR LATER TONIGHT ACROSS THE RIDGES...AND IN MANY AREAS OF CENTRAL AND NORTHERN PENNSYLVANIA ON WEDNESDAY WITH WIND GUSTS OVER 30 MPH. .SPOTTER INFORMATION STATEMENT... SPOTTERS...PLEASE RELAY REPORTS OF SNOW ACCUMULATION AND ICE ACCUMULATION VIA OUR WEBSITE AT WEATHER.GOV/STATECOLLEGE /ALL LOWER CASE/. LAMBERT
The national radar mosaic for the moment the first event began.
11 heavy snow. Local standard time, as filed.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Clearfield County, snow accumulated 9 to 11 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Northern Centre County, snow accumulated 11 to 12 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Cameron County, snow accumulated 9 to 14 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Elk County, snow accumulated about 9 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Northern Clinton County, snow accumulated 10 to 13 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In McKean County, snow accumulated 11 to 14 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Warren County, snow accumulated 12 to 17 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Northern Lycoming County, snow accumulated 10 to 12 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Potter County, snow accumulated about 14 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Sullivan County, snow accumulated about 14 inches.
A major winter storm, the first of the season, struck central Pennsylvania from the early morning hours of the 13th through the afternoon hours of the 14th bringing heavy snow to the region. In Tioga County, snow accumulated 12 to 14 inches.
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, February 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: 11677, 11682, 11676, 11678, 11683, 11680, 11693, 11684, 11690, 11691, 11692.