A late season snow storm brought 6 to 12 inches to most of central Pennsylvania.
Every event with a place to put it; 33 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 late season snow storm brought 6 to 12 inches to most of central Pennsylvania.
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 Mar 16, 2:55 AM EST, 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 355 AM EDT FRI MAR 16 2007 .SHORT TERM /TODAY THROUGH SATURDAY/... CLASSIC WINTER STORM SCENARIO SHAPING UP FOR CENTRAL PA...AS COLD HIGH PRES NORTH OF NEW ENG INTERACTS WITH LO TRACKING UP EAST COAST. RESULTING STRONG EASTERLY LL JET WILL SPREAD OVERRUNNING PRECIP ACROSS CENTRAL PA LATER TDY. ALTHOUGH LATEST SFC OBS CURRENTLY REPORTING RAIN ACROSS SOUTHERN PA...MODEL SOUNDINGS SUGGEST A RAPID CHANGE TO SNOW BY LATE AM. CHANGEOVER MAY NOT OCCUR UNTIL AFTN OVR PORTIONS OF YORK/LANCASTER COUNTIES. HOWEVER...HAVE DECIDED TO EXPAND WINTER STORM WARNINGS INTO THIS AREA...AS DEEPENING COASTAL LO LIKELY TO PRODUCE A PERIOD OF HVY SNOW LATE AFTN/EARLY EVENING. 00Z MODEL CROSS SECTIONS INDICATING A GOOD INSTABILITY SIGNATURE IN THIS REGION...WITH LYR OF NEG EPV LOCATED JUST ABV LOW LVL FRONTOGENESIS...SUGGESTING POSSIBILITY OF INTENSE BANDING LATE AFTN OR EARLY EVENING. LATEST ENSEMBLE CONSENSUS INDICATING STORM TOTAL QPF RANGING FROM ARND 0.5 OVR NW MTNS...TO ARND 2 INCHES OVER LANCASTER CO. MODEL DATA INDICATES SIG RIMING POTENTIAL IN 0 TO -10C LYR...WHICH COMBINED WITH HIGH MARCH SUN ANGLE...WILL LIKELY RESULT IN SNOW/WATER RATIOS SLIGHTLY LESS THAN 10:1. SNOW SHOULD TAPER OFF BY MIDNIGHT AS DRY SLOT ARRIVES. HOWEVER...OCCASIONAL LGT SNOW ASSOCIATED WITH UPPER LO APPEARS LIKELY SATURDAY. SREF DATA SUPPORTS AN ADDITIONAL INCH OR SO OVR MTNS. SUBSIDENCE EAST OF MTNS AND TEMPS NR OR ABOVE FREEZING SHOULD PRECLUDE ACCUMS THERE. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... BLUSTERY AND COLD CONDITIONS LIKELY TO LAST THRU SUNDAY. ENSEMBLE 850 TEMPS ARND -12C SUGGEST HIGHS MAINLY IN THE 30S. PLENTY OF CLOUDS/FLURRIES APPEAR LIKELY DOWNWIND OF LAKES. A CLIPPER SYSTEM COULD PRODUCE SCT -SHRASN MON/MON NITE. BUILDING RIDGE ALONG THE EAST COAST WILL SUPPORT DRY AND WARMING CONDITIONS TUE THRU THURSDAY. && .AVIATION /07Z-06Z/... PLENTY OF MID CLOUDS ACROSS CENTRAL PA EARLY THIS MORNING BUT MOST REMAINING ABOVE 3KFT. EXCEPTIONS INCLUDE MVFR CIGS IN HIGHER ELEVATION SITE KJST AND IN EXTREME SE COUNTIES AT KTHV/KLNS WHERE LIGHT RAIN CONTINUES. WEATHER WILL DEGRADE TODAY THROUGH SAT. SURFACE LOW WILL TRACK UP THE EAST COAST AS TROUGH WITH STRONG UPPER DYNAMICS DIGS OVER THE APPALACHIANS. LIGHT SNOW WILL SPREAD NORTHWARD ACROSS CWA /MIXING WITH LIGHT RAIN ALONG THE SOUTHERN PA BORDER/ AROUND SUNRISE AND INCREASE IN INTENSITY AS THE DAY WEARS ON. THIS WILL BRING WIDESPREAD IFR CONDITIONS TO MUCH OF THE REGION WITH MVFR/OCNL IFR IN THE NW AT KBFD FROM LATE MORNING INTO THE EVENING. AS STORM MOVES TO THE NE AWAY FROM PA...PRECIP SHIELD WILL GO WITH IT WITH HEAVIER PRECIP TAPERING OFF FROM WEST TO EAST BETWEEN 00Z-06Z SAT. BUT LOWER CLOUDS WILL LINGER WITH IFR/MVFR CONTINUING MUCH OF FRI NIGHT BEFORE GRADUAL IMPROVEMENT DURING THE DAY SAT TO MVFR IN THE NORTH/WEST WITH SCATTERED/NUMEROUS SNOW SHOWERS AND VFR IN THE SOUTHEAST WITH JUST SCATTERED SNOW SHOWERS. WINDS AT THE SURFACE WILL REMAIN NORTHEAST AROUND 10 KTS...WITH EAST WINDS ALOFT INCREASING IN SPEED TODAY AND TURNING MORE NORTHEASTERLY ALLOWING LLWS TO DEVELOP. WINDS WILL THEN TURN TO THE NORTH TONIGHT AND THEN NORTHWESTERLY ON SAT. SURFACE GUSTINESS WILL INCREASE BY LATE EVENING WITH SPEEDS INCREASING TO 10-15 KTS BEFORE INCREASING FURTHER ON SAT TO 15-20 KTS AND GUSTY. && .CTP WATCHES/WARNINGS/ADVISORIES... WINTER STORM WARNING FROM 6 AM THIS MORNING TO 8 AM EDT SATURDAY FOR PAZ004>006-010>012-017>019-024>028-033>035-037- 041-042-045-046-049>053-058. WINTER STORM WARNING FROM 10 AM THIS MORNING TO 8 AM EDT SATURDAY FOR PAZ036-056-057-059-063>066. && SHORT TERM...FITZGERALD LONG TERM...FITZGERALD AVIATION...RXR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 731 PM EDT THU MAR 15 2007 PAZ036-056-057-059-063>066-162345- FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 731 PM EDT THU MAR 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A WINTER STORM WILL SPREAD A MIX OF SNOW AND SLEET OVER THE REGION FRIDAY AND LAST INTO FRIDAY NIGHT. SEVERAL INCHES OF SNOW AND SLEET ARE POSSIBLE AND A WINTER STORM WATCH IS IN EFFECT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046- 049>053-058-162345- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN- SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-SCHUYLKILL- 731 PM EDT THU MAR 15 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A WINTER STORM WILL SNOW OVER THE REGION FRIDAY. THE SNOW WILL CONTINUE INTO FRIDAY NIGHT. WINTER STORM WARNINGS ARE IN EFFECT FOR SNOWFALL IN EXCESS OF 6 INCHES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. JL
The national radar mosaic for the moment the first event began.
33 heavy snow. Local standard time, as filed.
A late season winter storm brought 8 inches of heavy snow to Cambria County.
A late season winter storm brought 6 to 8 inches of heavy snow to Somerset county.
A late season winter storm brought 6 to 8 inches of heavy snow to Franklin County.
A late season winter storm brought 7 to 8 inches of heavy snow to Huntingdon County.
A late season winter storm brought 8 to 10 inches of heavy snow to Adams County.
A late season winter storm brought 8 to 12 inches of heavy snow to Northumberland county.
A late season winter storm brought 8 to 10 inches of heavy snow to Perry county.
A late season winter storm brought 8 to 12 inches of heavy snow to Schuylkill county.
A late season winter storm brought 8 to 10 inches of heavy snow to Snyder county.
A late season winter storm brought 6 to 8 inches of heavy snow to Clearfield County.
A late season winter storm brought 8 to 10 inches of heavy snow to Columbia County.
A late season winter storm brought 8 inches of heavy snow to Cumberland County.
A late season winter storm brought 8 to 10 inches of heavy snow to Southern Centre county.
A late season winter storm brought 7 to 10 inches of heavy snow to Dauphin County.
A late season winter storm brought 8 inches of heavy snow to Juniata County.
A late season winter storm brought 6 to 9 inches of heavy snow to Lancaster County.
A late season winter storm brought 8 to 12 inches of heavy snow to Lebanon County.
A late season winter storm brought 8 to 10 inches of heavy snow to Union county.
A late season winter storm brought 6 to 8 inches of heavy snow to Mifflin County.
A late season winter storm brought 7 to 9 inches of heavy snow to Montour County.
A late season winter storm brought 10 to 11 inches of heavy snow to Northern Centre County.
A late season winter storm brought 6 to 10 inches of heavy snow to York county.
A late season winter storm brought 8 to 10 inches of heavy snow to Northern Clinton county.
A late season winter storm brought 9 to 10 inches of heavy snow to Cameron County.
A late season winter storm brought 8 to 10 inches of heavy snow to Northern Lycoming county.
A late season winter storm brought 8 to 12 inches of heavy snow to Potter county.
A late season winter storm brought 8 to 10 inches of heavy snow to Southern Clinton county.
A late season winter storm brought 6 inches of heavy snow to Elk County.
A late season winter storm brought 8 to 10 inches of heavy snow to Southern Lycoming county.
A late season winter storm brought 10 to 12 inches of heavy snow to Sullivan county.
A late season winter storm brought 8 to 10 inches of heavy snow to Tioga county.
A late season winter storm brought 6 to 12 inches of heavy snow to McKean County.
A late season winter storm brought 6 to 8 inches of heavy snow to Warren county.
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, March 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: 12363, 12379, 12389, 12391, 12358, 12369, 12370, 12373, 12375, 12376, 12378, 12380, 12381, 12384, 12392, 12394, 12396, 12397, 12399, 12401, 12403, 12404, 12362, 12366, 12368, 12372, 12385, 12386, 12388, 12393, 12395, 12398, 12400.