A cold front swept across the region, setting up a period of snow showers and lake effect snow squalls across 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 front swept across the region, setting up a period of snow showers and lake effect snow squalls across 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 Dec 7, 3:46 AM EST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 346 AM EST THU DEC 7 2006 .SHORT TERM /TODAY THROUGH FRIDAY NIGHT/... PREVIOUS GRIDDED FIELDS NEEDED ONLY SOME MINOR ADJUSTMENTS...MAINLY WITH RESPECT TO TEMPS TODAY /WHICH WILL REACH THEIR MAXS THIS MORNING IN MOST AREAS/ AND THE LOCATION OF SNOW BANDS /DUAL LAKE HURON AND ERIE TRAJECTORY INTO THE LAUREL HIGHLANDS AND POSSIBLY EVEN INTO BEDFORD AND FRANKLIN COUNTIES/ FOR TONIGHT AND EARLY FRIDAY MORNING. INITIAL COLD FRONT IS CROSSING WRN PENN ATTM WITH ONLY MINOR TEMP DROPS BEHIND IT...AND WEAK CONVERGENCE WITH LIGHT SNOW SHOWERS AS THE WIND SHIFTS FROM THE SW TO WSW. THE MORE SIGNIFICANT...ARCTIC FRONT APPROACHING THE NORTH SHORE OF LAKE ERIE AND NRN OHIO WILL PLOW ACROSS THE REGION /LATE THIS MORNING OVER THE NW MTNS/ AND LATER THIS AFTERNOON AND EVENING ACROSS THE SUSQ VALLEY. STRONG 700 HPA COLD ADVECTION BETWEEN 18Z AND 00Z WILL HELP TO STEEPEN MID LVL LAPSE RATES AND SUPPORT HEAVIER SHSN AND LOCALIZED SQUALLS. THE STRONG UPPER TROUGH WITH MINIMUM 500 HPA TEMPS OF LESS THAN -35C WILL CROSS PENN TONIGHT ABOVE A WELL ALIGNED LLVL FLOW FROM 300-310 DEG AND DEEP COLD AIR WITH A SUBSIDENCE INVERSION OF 8-10 KFT AGL. THIS SHOULD SUPPORT A FEW INTENSE SNOW BANDS WITH DUAL LAKE FETCH ACROSS LAKE HURON AND WRN LAKE ERIE INTO THE LAURELS WITH 4-7 INCHES OF SNOW AND BLOWING SNOW OVER A 24-30 HOUR PERIOD. THE OTHER OBVIOUS AREA OF LOCALLY HEAVY LES WILL BE ACROSS WARREN AND MCKEAN COUNTIES WHERE A TOTAL OF 6-10 INCHES IS LIKELY. ACROSS THE CENTRAL VALLEY REGION...AND SUSQ VALLEY A COATING TO A FEW INCHES WILL FALL BY EARLY FRI. WIND CHILLS WILL BE ANOTHER NOTABLE FEATURE...AND WILL BOTTOM OUT BETWEEN ZERO TO 5 BELOW TONIGHT ACROSS THE WRN AND NRN MTNS...AND 5 TO 10F ELSEWHERE. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... MODERATING TEMPS BACK TO NEAR OR SLIGHTLY ABOVE NORMAL AND DRY WEATHER WILL OCCUR SATURDAY THROUGH MONDAY. 500 HPA HEIGHTS RISING ABOVE 570 DAM WILL GRADUALLY SLIDE DURING THE MIDWEEK AS ONE OR MORE TROUGHS APPROACH FROM THE SOUTHERN PLAINS AND A COLD FRONT EDGES EAST FROM THE MIDWESTERN STATES...BRINGING THE NEXT CHC FOR SHOWERS. && .AVIATION... INTENSE BANDS/SQUALLS EVIDENT ON RADAR NOW BETWEEN KDUJ AND KFIG EXTEND TO THE ENE AND WSW...AND ONLY MOVING SLOWLY EAST/SOUTH. REST OF AREA VFR WITH OCCNL MVFR FLURRIES/SPRINKLES...AS LOW MVFR OR LOWER CLOUDS PENT UP NORTH OF CWA. WILL SEE THE CONDITIONS CONTINUE TO DETERIORATE AT KBFD AND KJST EARLY THIS MORNING. REST OF AREA WILL HAVE TO WAIT UNTIL AN ARCTIC FRONT BLASTS THROUGH LATER THIS MORNING TO SEE THINGS REALLY GO DOWNHILL. LAKE EFFECT MACHINE CRANKS UP THEN...AS THE 8H TEMPS CRASH SOME 14 DEGS C BY 00Z. KMDT MAY ESCAPE ANYTHING LOWER THAN VFR THROUGH A GOOD PART OF THE DAY...AS DOWNSLOPE ALWAYS SEEMS TO HELP DRY THEM OUT. THE WINDS WILL BE SWRLY AHEAD OF THE SQUALLS OUT THERE NOW...AND W/NW BEHIND THEM. THEY SHOULD GET GUSTY...TOO...AS WINDS GET WELL ALIGNED LATER TODAY WITH THE CAA. WILL LEAVE IN MENTIONS OF LLWS FOR THE FIRST FEW HOURS THIS MORNING FOR THE EASTERN TAFS /KMDT/KIPT/ AS THEY ARE MORE CALM AT THE SFC RIGHT NOW. && .CTP WATCHES/WARNINGS/ADVISORIES... LAKE EFFECT SNOW WARNING FOR PAZ004 UNTIL 1 PM FRIDAY. LAKE EFFECT SNOW ADVISORY FOR PAZ005 UNTIL 1 PM FRIDAY. SNOW AND BLOWING SNOW ADVISORY FOR PAZ024-033 FROM 7 AM THURSDAY TO 1 PM FRIDAY. && SHORT TERM...LAMBERT LONG TERM...LAMBERT AVIATION...DANGELO
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 530 AM EST WED DEC 6 2006 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046- 049>053-056>059-063>066-071030- 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- 530 AM EST WED DEC 6 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT A LAKE EFFECT SNOW WATCH IS IN EFFECT FOR WARREN COUNTY IN NORTHWESTERN PENNSYLVANIA BEGINNING LATE TONIGHT...AND CONTINUING THROUGH FRIDAY MORNING. A STRONG COLD FRONT WILL MOVE ACROSS THE NORTHWEST CORNER OF THE STATE EARLY THURSDAY...ACCOMPANIED BY SNOW SHOWERS. 1 OR 2 INCHES OF SNOW IS POSSIBLE BY DAYBREAK THURSDAY IN THIS AREA. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY LAKE EFFECT SNOWS WILL INCREASE ACROSS THE NORTHWEST MOUNTAINS...WHILE SNOW SHOWERS DEVELOP ALONG AND IN THE WAKE OF THE COLD FRONT THAT WILL MOVE ACROSS CENTRAL AND SOUTHEASTERN PENNSYLVANIA DURING THE AFTERNOON AND EARLY EVENING HOURS. SEVERAL INCHES OF SNOW ARE LIKELY ACROSS THE NORTHWEST BY DUSK THURSDAY...WITH 1 TO 3 INCHES POSSIBLE ACROSS THE NORTH CENTRAL MOUNTAINS AND LAUREL HIGHLANDS. A COATING TO 2 INCHES IS POSSIBLE FROM SNOW SHOWERS AND A FEW HEAVY SQUALLS ELSEWHERE ACROSS THE CENTRAL RIDGE AND VALLEY REGION...ALONG WITH THE SUSQUEHANNA VALLEY. THE TIMING OF THE SNOW SQUALLS DURING THE MID TO LATE AFTERNOON ACROSS THE CENTRAL COUNTIES...AND LATE DAY TO EARLY EVENING COMMUTE HOURS IN THE GREATER HARRISBURG AND WILLIAMSPORT AREAS COULD CREATE VERY HAZARDOUS TRAVEL CONDITIONS AS TEMPERATURES FALL...AND ANY WET PAVEMENT FREEZES WITH A COATING OF BLACK ICE AND A LIGHT SNOW ACCUMULATION ON TOP. SNOW SHOWERS AND A FEW SQUALLS WILL CONTINUE THURSDAY NIGHT AND INTO FRIDAY...MAINLY ACROSS THE NORTHWEST HALF OF THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTERS...PLEASE REPORT ANY SNOWFALL OF 3 INCHES OR MORE. LAMBERT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 1026 PM EST WED DEC 6 2006 PAZ006-010>012-017>019-025>028-034>037-041-042-045-046-049>053- 056>059-063>066-071100- 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- 1026 PM EST WED DEC 6 2006 ...MUCH COLDER WEATHER WITH SNOW SHOWERS AND SQUALLS ON THE WAY FOR THURSDAY INTO FRIDAY... THE FIRST REAL ARCTIC AIR OF THE SEASON WILL MOVE INTO THE REGION ON THURSDAY...HELPING TO GENERATE SCATTERED SNOW SHOWERS AND LOCALLY HEAVIER SQUALLS. A BRIEF SNOW SQUALL WILL ACCOMPANY THE ARRIVAL OF ARCTIC AIR IN MANY PLACES THURSDAY AFTERNOON AND EVENING. ICY ROAD CONDITIONS MAY RESULT...AS THE SNOW IS FOLLOWED BY RAPIDLY FALLING TEMPERATURES. THE ARCTIC FRONT SHOULD ARRIVE OVER THE NORTHWEST MOUNTAINS EARLY IN THE AFTERNOON...THE CENTRAL MOUNTAINS DURING LATE AFTERNOON...AND THE SUSQUEHANNA VALLEY BY EARLY EVENING. SEVERAL INCHES OF SNOW ARE LIKELY ACROSS THE NORTHERN AND WESTERN MOUNTAINS OF PENNSYLVANIA...WHERE LAKE EFFECT SNOW SHOWERS WILL PERSIST THROUGH FRIDAY MORNING. LIGHTER AMOUNTS ARE EXPECTED EAST OF THE MOUNTAINS...WHERE UP TO AN INCH OR SO IS POSSIBLE FROM STATE COLLEGE EASTWARD INTO THE SUSQUEHANNA VALLEY. IF YOU PLAN TO TRAVEL ACROSS THE REGION BE AWARE OF THE POTENTIAL FOR RAPIDLY CHANGING WEATHER AND ROAD CONDITIONS. SNOW SQUALLS...ESPECIALLY DURING PEAK DRIVING TIMES...POSE ONE OF THE GREATEST HAZARDS TO TRAVEL...AS CONDITIONS CAN VARY GREATLY OVER A VERY SHORT DISTANCE. STAY TUNED TO NOAA WEATHER RADIO...OR OUR INTERNET SITE AT WEATHER.GOV/STATECOLLEGE FOR LATER STATEMENTS AND POSSIBLE WINTER WEATHER ADVISORIES.
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 snow squalls brought locally heavy snow to portions of Warren County. Russell received 6.0 inches from the event, while areas around Bear Lake received 6.5 inches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2006Every state in 2006This day in weather historyWarnings in Pennsylvania, December 2006
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: 5357.