Winter Weather, Carbon
- When
- March 7, 3:00 AM EST to 5:00 PM EST
- Where
- Carbon forecast zone
- Injuries
- 0 direct, 3 indirect
- Reported by
- Trained Spotter
- Coordinates
- 40.918, -75.709 (the zone’s center; the record gives no point)
Winter Weather in Pennsylvania, March 7, 2007
An Alberta Clipper low pressure system dropped light snow across Eastern Pennsylvania during the day on the 7th. Accumulations averaged 1 to 3 inches.
Where it happened
Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 3
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 10
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.
What happened
The episode as NWS PHI wrote it up.
An Alberta Clipper low pressure system dropped light snow across Eastern Pennsylvania during the day on the 7th. Accumulations averaged 1 to 3 inches. The recent unseasonably cold weather made it easier for the snow to accumulate on roadways and bridges and overpasses during the early morning and also during heavier bursts of snow. Consequently untreated roadways were slippery and many accidents were reported, especially during the morning commute. Snow began falling between 3 a.m. and 5 a.m. EST on the 7th across Eastern Pennsylvania and ended between 3 p.m. and 5 p.m. EST later that day. |One of the worst reported accidents with injuries occurred in Towamensing Township (Carbon County) on Pennsylvania State Route 209. A pickup truck slid sideways into oncoming traffic where it crashed with another vehicle and then slammed into a pole. The oncoming car was then struck from behind by another vehicle which then skidded off the road into a tree. Three people were injured and hospitalized. Schools in Easton (Northampton County) and Catasauqua (Lehigh County) never opened. Several Bucks County school districts cancelled afternoon and evening activities. |Actual accumulations included 2.5 inches in Reading (Berks County) and Fricks (Bucks County), 2.3 inches in Boothwyn (Delaware County), 2.0 inches in Downingtown (Chester County), 1.8 inches in Trappe (Montgomery County), Boyertown (Berks County) and Levittown (Bucks County), 1.7 inches at the Philadelphia International Airport, 1.5 inches in Jim Thorpe (Carbon County), Roxborough (Philadelphia County) and Wynnewood (Montgomery County), 1.4 inches at the Lehigh Valley International Airport, 1.0 inch in Effort (Monroe County) and 0.8 inches in Martins Creek (Northampton County). | |The Alberta Clipper as it name implies moved rapidly southeast from southeastern Montana at 7 a.m. EST on March 6th, to near Saint Louis, Missouri at 7 a.m. EST on March 7th, to the Virginia/West Virginia border at 1 p.m. EST on March 7th, to about 150 miles east of Virginia Beach, Virginia at 7 p.m. EST on March 7th. The rapid movement of the low pressure system prevented heavier snow from falling.
What forecasters said that day
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 Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Mar 7, 12:50 AM EST, 2 hours 10 minutes earlier.
Area forecast discussion, Mar 7, 12:50 AM EST, 2 hours 10 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1250 AM EST WED MAR 7 2007
.AVIATION /06Z-06Z/...
AT 12:30 AM, MID LEVEL CLOUDS WERE BEGINNING TO APPROACH OUR REGION
FROM THE WEST. THEY SHOULD OVERSPREAD ALL EIGHT OF OUR TAF SITES BY
2:00 OR 2:30 WITH CEILINGS AROUND 8000 FEET EXPECTED TO PREVAIL
UNTIL AROUND 5:00 OR 6:00 AM.
THE SNOW IS EXPECTED TO BEGIN AFFECTING OUR REGION AROUND DAYBREAK.
IT IS FORECAST TO START OFF RATHER LIGHT BEING THAT IT HAS SOME VERY
DRY AIR TO OVERCOME. WERE EXPECTING THE SIGNIFICANT PERIOD OF SNOW
FOR KRDG AND KABE TO RUN FROM ABOUT 8:00 AM UNTIL AROUND NOON, AND
FOR KTTN IT SHOULD BE ABOUT AN HOUR LATER.
FOR LOCATIONS FARTHER TO THE SOUTH, A LONGER PERIOD OF SNOW IS
ANTICIPATED, ALONG WITH LOWER CEILING AND VSBY VALUES. FOR KPNE,
KPHL AND KILG, THERE SHOULD BE ABOUT A 5 HOURS PERIOD WITH
SIGNIFICANT SNOW, FROM ABOUT 9:00 AM UNTIL 2:00 PM. FOR KMIV AND
KACY, IT SHOULD RUN FROM ABOUT 10:00 AM UNTIL 4:00 PM.
FOLLOWING THE PERIOD OF SNOW, VSBY VALUES SHOULD IMPROVE RATHER
QUICKLY. HOWEVER, LOW CLOUDS MAY LINGERING FOR PERHAPS 3 TO 5 HOURS
AFTER THE MAIN SNOW STOPS, WITH LITTLE IN THE WAY OF WIND BEHIND THE
SYSTEM. EVEN SO, WITH VERY DRY AIR REMAINING JUST TO OUR NORTH, WE
SHOULD SEE A RETURN TO VFR CONDITIONS FOR THIS EVENING AT ALL EIGHT
OF OUR TAF SITES.
&&
.MARINE...
CONDITIONS ON OUR COASTAL WATERS FROM SANDY HOOK TO LITTLE EGG INLET
HAVE DROPPED BELOW SMALL CRAFT ADVISORY CRITERIA. AS A RESULT, THE
ADVISORY WILL BE ALLOWED TO EXPIRE AT 1:00 AM AND THE FORECAST WILL
BE UPDATED.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...SNOW ADVISORY FROM 7 AM THIS MORNING TO 6 PM EST THIS
AFTERNOON FOR PAZ070-071.
NJ...SNOW ADVISORY FROM 7 AM THIS MORNING TO 6 PM EST THIS
AFTERNOON FOR NJZ016>027.
DE...SNOW ADVISORY FROM 7 AM THIS MORNING TO 6 PM EST THIS
AFTERNOON FOR DEZ001>004.
MD...SNOW ADVISORY FROM 7 AM THIS MORNING TO 6 PM EST THIS
AFTERNOON FOR MDZ008-012-015-019-020.
MARINE...NONE.
&&
AVIATION/MARINE...IOVINOHazardous weather outlook, Mar 6, 3:10 PM EST, 11 hours 50 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 310 PM EST TUE MAR 6 2007 PAZ054-055-071000- CARBON-MONROE- 310 PM EST TUE MAR 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NJZ001-007>010-012-015-PAZ060>062-068-069-071000- SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-BERKS- LEHIGH-NORTHAMPTON-MONTGOMERY-BUCKS- 310 PM EST TUE MAR 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SNOW MAY ACCUMULATE AN INCH OR TWO WEDNESAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SNOW THEY MAY HAVE. DEZ001-MDZ008-012-NJZ016>022-026-027-PAZ070-071-071000- NEW CASTLE-CECIL-KENT MD-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA- 310 PM EST TUE MAR 6 2007 ...SNOW ADVISORY IN EFFECT FROM 7 AM TO 6 PM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST MARYLAND...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SNOW ADVISORY WEDNESDAY FOR 1 TO 2 INCHES WITH LOCAL AMOUNTS OF 3 INCHES TO THE SOUTH OF PHILADELPHIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ARE ENCOURAGED TO REPORT ANY SNOW THEY MAY HAVE. NJZ013-014-PAZ067-071000- WESTERN MONMOUTH-EASTERN MONMOUTH-CHESTER- 310 PM EST TUE MAR 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SNOW MAY ACCUMULATE AN INCH OR TWO WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SNOW THEY MAY HAVE. ANZ450-451-071000- COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM- COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM- 310 PM EST TUE MAR 6 2007 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. LOW WATER ADVISORY THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ002>004-MDZ015-019-020-NJZ023>025-071000- KENT DE-INLAND SUSSEX-DELAWARE BEACHES-QUEEN ANNES-TALBOT-CAROLINE- CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- 310 PM EST TUE MAR 6 2007 ...SNOW ADVISORY IN EFFECT FROM 7 AM TO 6 PM EST WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...EASTERN MARYLAND...NORTHEAST MARYLAND AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SNOW ADVISORY FOR 2 TO 4 INCHES OF SNOW ACCUMULATION. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY SNOW THEY MAY HAVE. ANZ430-431-452>455-071000- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM- COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM- COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM- 310 PM EST TUE MAR 6 2007 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EST THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. LOW WATER ADVISORY THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. STAUBER
The radar
The national radar mosaic for the moment the first event began.
Event by event
10 winter weather. Local standard time, as filed.
Winter Weather, Monroe
- When
- March 7, 3:00 AM EST to 4:30 PM EST
- Where
- Monroe forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 41.058, -75.339 (the zone’s center; the record gives no point)
Winter Weather, Lehigh
- When
- March 7, 3:30 AM EST to 3:30 PM EST
- Where
- Lehigh forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 40.613, -75.592 (the zone’s center; the record gives no point)
Winter Weather, Northampton
- When
- March 7, 3:30 AM EST to 3:30 PM EST
- Where
- Northampton forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 40.754, -75.307 (the zone’s center; the record gives no point)
Winter Weather, Berks
- When
- March 7, 4:00 AM EST to 4:00 PM EST
- Where
- Berks forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 40.416, -75.926 (the zone’s center; the record gives no point)
Winter Weather, Bucks
- When
- March 7, 4:00 AM EST to 4:00 PM EST
- Where
- Bucks forecast zone
- Reported by
- Trained Spotter
Winter Weather, Chester
- When
- March 7, 4:00 AM EST to 4:00 PM EST
- Where
- Chester forecast zone
- Reported by
- Trained Spotter
Winter Weather, Montgomery
- When
- March 7, 4:00 AM EST to 4:00 PM EST
- Where
- Montgomery forecast zone
- Reported by
- Trained Spotter
Winter Weather, Delaware
- When
- March 7, 5:00 AM EST to 5:00 PM EST
- Where
- Delaware forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 39.917, -75.399 (the zone’s center; the record gives no point)
Winter Weather, Philadelphia
- When
- March 7, 5:00 AM EST to 5:00 PM EST
- Where
- Philadelphia forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 40.008, -75.134 (the zone’s center; the record gives no point)
What these are
- Winter Weather
- Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Winter Weather in New Jersey, March 7, 2007
- Winter Weather in Delaware, March 7, 2007
- Winter Storm and Winter Weather in Maryland, March 7, 2007
- Winter Storm and Winter Weather in West Virginia, March 7, 2007
- Winter Weather in Virginia, March 7, 2007
- Winter Weather in Maryland, March 7, 2007
- Winter Weather in West Virginia, March 7, 2007
- Winter Weather in Maryland, March 7, 2007
- Heavy Snow in Pennsylvania, March 7, 2007
- Blizzard in Alaska, March 7 to 9, 2007
- Blizzard in Alaska, March 7 to 8, 2007
- Heavy Snow in Pennsylvania, March 7, 2007
More
Every storm in Pennsylvania in 2007Every state in 2007This day in weather historyWarnings in Pennsylvania, March 2007
Sources
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: 21219, 21224, 21222, 21223, 21217, 21218, 21220, 21225, 21221, 21226.