A cold flow of air flowing over Lake Erie produced a prolonged period of snow showers and heavier lake effect snows over Warren County.
Every event with a place to put it; 1 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 cold flow of air flowing over Lake Erie produced a prolonged period of snow showers and heavier lake effect snows over Warren County.
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 Jan 19, 11:03 AM EST, 3 hours 57 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 306 AM EST FRI JAN 19 2007 PAZ004-005-200815- WARREN-MCKEAN- 306 AM EST FRI JAN 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT A LAKE EFFECT SNOW WARNING IS IN EFFECT FOR WARREN COUNTY FROM 10 AM TODAY THROUGH 11 AM SATURDAY...FOR 5 TO 7 INCHES OF SNOW. A LAKE EFFECT SNOW ADVISORY IS IN EFFECT FOR MCKEAN COUNTY FROM 10 A TODAY THROUGH 11 AM SATURDAY...FOR 3 TO 5 INCHES OF SNOW. SNOW SHOWERS WILL INCREASE TODAY AS INCREASING NORTHWEST WINDS BLOW COLD AIR OVER THE UNSEASONABLY WARM AND UNFROZEN WATERS OF THE EASTERN GREAT LAKES. SNOW SHOWERS WILL CONTINUE OVERNIGHT THROUGH SATURDAY MORNING BEFORE DECREASING SATURDAY AFTERNOON. NORTHWEST WINDS OF 15 TO 25 MPH WITH GUSTS OVER 35 MPH AT TIMES WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW LATER TODAY THROUGH EARLY SATURDAY MORNING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. PAZ006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-200815- 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- 306 AM EST FRI JAN 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT SNOW SHOWERS WILL AFFECT CENTRAL AND NORTHERN PORTIONS OF CENTRAL PENNSYLVANIA LATER TODAY AND TONIGHT. A FEW HEAVIER SNOW SHOWERS ARE POSSIBLE THIS AFTERNOON AND EVENING...WHICH MAY PRODUCE AREAS OF BLOWING SNOW AND REDUCED VISIBILITY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
1 lake-effect snow. Local standard time, as filed.
Lake effect snow showers and squalls produced heavy snow over portions of Warren County. This included 10 inches in Chandlers Valley and 8 inches in the city of Warren.
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, January 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 2026-09-30. Each event’s entry at NCEI: 7209.