Winter Storm in Pennsylvania, February 9 to 11, 2010

Name: Winter Storm in Pennsylvania, February 9 to 11, 2010
Start: 2010-02-09T17:00
End: 2010-02-11T00:00
Location: Pennsylvania

February 9 to 11, 2010 · NWS PHI · 10 events in 10 counties and zones

For the second time within a week a major winter storm affected Eastern Pennsylvania on the 10th and 11th and smashed seasonal snowfall records in the Philadelphia area. Snowfall averaged one to two feet with some locally higher amounts in the Philadelphia northwest suburbs.

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

Open the live radar over this ground

The toll

Deaths: 2
Injuries: 0
Property damage: $20 million
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.

Around the local Philadelphia area, snow began during the early evening on the 9th. As warmer air moved in aloft, the snow changed to sleet and freezing rain between 3 a.m. and 6 a.m. EST on the 10th. Surface temperatures responded slower and the sleet and freezing rain changed over to rain during the morning of the 10th. Some sleet mixed in from time to time. As the low pressure system moved northeast of the region, the rain changed back to snow by Noon EST on the 10th and fell heavy at times during the afternoon. Winds also increased and started to down snow laden tree limbs and trees. The snow ended late in the evening on the 10th. In the rest of Eastern Pennsylvania, snow began during the evening of the 9th and fell at its heaviest from the late morning into the afternoon of the 10th. The snow ended during the evening of the 10th.

Pennsylvania Governor Ed Rendell declared a state of disaster emergency. Many counties, cities and municipalities issued their own snow and/or states of emergencies. Even Pennsylvania Power and Light declared its own snow emergency. Many city, federal, social and county offices as well as courthouses were closed on the 10th and 11th. Many municipal meetings were postponed. Interstates 76, 176, 476, 676 and 78 were all closed on the afternoon of the 10th and reopened on the 11th. The Pennsylvania National Guard was activated to assist stranded motorists and to assist people without power in southeastern Pennsylvania with food and blankets. Schools were closed on the 10th and 11th, some even on the 12th. Many businesses were closed on the 10th. Philadelphia International Airport was closed on the 10th and reopened on the afternoon of the 11th. SEPTA regional rail and bus service was suspended in southeastern Pennsylvania on the 10th and 11th. Because the heavy snow clung to the trees first and then the winds increased, PECO Energy suffered its worst winter time power outage (9th highest overall) since the ice storm of January 1994. About 225,000 homes and businesses lost power. Several shelters were opened in the Philadelphia suburbs. Power was not fully restored until the 13th. About 8,500 Pennsylvania Power and light customers lost power, their power was fully restored by the 11th. Many school districts ran out of snow days and municipal snow removal budgets were exceeded. Trash collections were postponed. The combination of the two heavy snow events within a week started causing roof collapses in the Philadelphia suburbs. No injuries occurred.

The combination of heavy snow and then the increasing wind caused many pine trees to snap and/or be uprooted in and around Philadelphia. It was the 9th highest power outage in PECO Energy's history. They had 1,549 outage events and about 225,000 customers affected. Outages by county were 60,500 in Chester, 55,000 in Delaware, 47,650 Bucks, 44,700 in Montgomery and 17,000 in Philadelphia. All power was restored by the 13th. The utility replaced 56 miles of cable, 50 transformers, 51 poles, replaced or reconnected 8,000 fuses, and 1,550 pole top cross arms. Damage to the infrastructure was estimated at 15 million dollars.

In Philadelphia, a 65-year-old man and a 66-year-old man died from heart attacks shoveling snow. Schools remained closed through the 12th. In Bucks County, the mid section (Middletown, Northampton, Yardley, Bristol, Upper and Lower Makefield) of the county was hardest hit by the power outages. There were 220 separate outages. Three shelters were opened. A tin and wood storage building in Middletown collapsed. In Montgomery County, the outages were centered around Lower Merion, Abington, Cheltenham, Upper and Lower Moreland, Upper Dublin and Ambler. In Pottstown, the roof of a modular building collapsed. Porches collapsed in Narberth and Royersford. In Springfield Township, an ice skating rink was evacuated after the roof's trusses started to pop. In Chester County, a storage building collapsed in West Chester, a Farmer's Market Building collapsed in Caln Township.

In Berks County, two separate tractor-trailer jackknifes initiated the closure of Interstate 78. This also led to the chain reaction closing of Interstates 176, 76, 476 and 676 in southeastern Pennsylvania. About 200 motorists and 180 tractor-trailers were stranded for up to 12 hours on a five mile stretch of Interstate 78 as large drifts occurred. While most of the interstates were opened on the morning of the 11th, westbound I78 was not reopened until that afternoon. About 3,000 homes and businesses lost power in Berks County, 2,100 in Boyerstown and 900 in Reading. Power was restored on the 11th. Ironically in Spring Township, the roof of a commercial building collapsed and damaged twenty snow throwers. In Boyertown, the entire roof of a two story commercial building collapsed on East Philadelphia Avenue. In Lower Alsace Township, the roof of a two car garage collapsed. In Reading, the third floor of a large brick building on Buttonwood Street collapsed. Several canopies, awnings and overhangs also collapsed. In the Lehigh Valley, about 4,500 homes and businesses lost power in Bethlehem, Upper Saucon, Coopersburg, Easton and Bangor. A porch collapsed in Emmaus (Northampton County).

Representative snowfall included 26.8 inches in East Nantmeal (Chester County), 26.1 inches in South Coventry (Chester County), 23.3 inches in Boyertown (Berks County), 23.0 inches in Eagleville (Montgomery County), 21.0 inches in Perkasie (Bucks County), 20.0 inches in Reading (Berks County), Collegeville (Montgomery County) and Boothwyn (Delaware County), 19.5 inches in Rockledge (Philadelphia County), 19.3 inches in Furlong (Bucks County), 19.0 inches in Nazareth (Northampton County), 18.0 inches in Lehighton (Carbon County) and Caln (Chester County), 17.8 inches at the Lehigh Valley International Airport, 17.5 inches in Albrightsville (Carbon County), 17.1 inches in Bethlehem (Northampton County), 17.0 inches in Drexel Hill (Delaware County), Blue Bell (Montgomery County) and Pine Valley (Philadelphia County), 16.5 inches in West Chester (Chester County), 16.1 inches in Stroudsburg (Monroe County), 15.8 inches at the Philadelphia International Airport, 15.6 inches in Easton (Northampton County), 15.1 inches in Schnecksville (Lehigh County), 15.0 inches in Emmaus (Lehigh County), 14.0 inches in Honey Brook (Chester County), 13.9 inches in Green Lane (Montgomery County), 11.0 inches in Langhorne (Bucks County) and 9.0 inches in Tobyhanna (Monroe County).

Only 10 days into February and the 44.9 inches of snow that already fallen within the month at the Philadelphia International Airport established a new snowfall record for February. The seasonal total of 72.1 inches of snow to date already made it the snowiest season on record surpassing the previous record of 65.5 inches set in 1995-6.

Peak wind gusts included 46 mph in Mount Pocono (Monroe County), 41 mph at the Lehigh Valley International Airport and Doylestown (Bucks County), 37 mph at Willow Grove (Montgomery County) and the Philadelphia International Airport and 36 mph in Reading (Berks County).

The low pressure system responsible for the latest winter storm emerged from the Big Bend of Texas on the morning of the 8th. It moved northeast and reached the Tennessee Valley on the morning of the 9th. At 7 p.m. EST on the 9th, it was located near Charleston, South Carolina. It then moved northnortheast and was near Norfolk, Virginia at 1 a.m. EST on the 10th, Georgetown, Delaware at 7 a.m. EST on the 10th, Atlantic City, New Jersey at 10 a.m. EST on the 10th and just east of Seaside Heights, New Jersey at 4 p.m. EST on the 10th. The low pressure system then drifted slowly east the rest of the afternoon into the overnight of the 10th. The pass of the low pressure system into New Jersey permitted warmer air aloft and at the surface to make it into the local Philadelphia area during the first half of the day on the 10th, before the heavier snow and then the stronger winds returned. The heaviest snow occurred just to the north and west of this changeover in the Philadelphia northwest suburbs.

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 Feb 9, 3:51 PM EST, 1 hour 9 minutes earlier.

Area forecast discussion, Feb 9, 3:51 PM EST, 1 hour 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
351 PM EST TUE FEB 9 2010

.SYNOPSIS...
COMPLEX LOW PRESSURE WILL APPROACH FROM THE SOUTHWEST TONIGHT AND
CONSOLIDATE AND BEGIN TO INTENSIFY OFF THE NORTHERN MID ATLANTIC
COAST BY WEDNESDAY MORNING. THE LOW WILL LIFT AWAY WEDNESDAY NIGHT
AND THURSDAY, AND HIGH PRESSURE WILL APPROACH FOR THE END OF THE
WORK WEEK.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
THE MESOSCALE AND LARGE SCALE FEATURES OF THIS SYSTEM HAVE BEEN
DISCUSSED REPEATEDLY IN PREVIOUS DISCUSSIONS, AND WE WILL NOT
REPEAT THEM HERE. THE SAME IS TRUE OF THE CHANGE IN SNOW TO LIQUID
RATIOS AS WE TRANSITION FROM ENHANCED WARM AIR ADVECTION
PRECIPITATION TO DEFORMATION PRECIPITATION. OF NOTE THIS MODEL
RUN WAS THE NAM TREND TOWARD A SLIGHTLY SLOWER AND MORE NORTHERLY
SOLUTION THAT WOULD HAVE A SIGNIFICANT IMPACT ON THE PRECIPITATION
TYPE FOR ALL BUT THE NORTHWESTERN ZONES WERE IT TO VERIFY. THE NAM
HAS BECOME THE MODEL ON THE NORTHWESTERN EDGE OF THE GUIDANCE
ENVELOPE BECAUSE OF THIS TREND, AND WE HAVE ONLY SLIGHTLY
INCORPORTATED IT INTO THIS PACKAGE.

WE MADE LITTLE IN THE WAY OF CHANGES TO CONTINUITY WITH REGARD TO
TEMPERATURES, AS THIS GENERALLY FAVORED THE MAV OVER THE MET
VALUES. WE DID MAKE TEMPERATURES RISE A BIT, ESPECIALLY DOWN
SOUTH, OVERNIGHT TONIGHT.

WE EXPECT THE BULK OF THE SNOW TO FALL TOMORROW. PEOPLE WAKING UP
IN THE MORNING MAY NOT BE TERRIBLY IMPRESSED BY WHAT THEY FIND.
MOREOVER, THE MID LEVEL DRY SLOT MAY MAKE PRECIPITATION FROM
PRIOR TO DAYBREAK UNTIL MID-MORNING RATHER MEAGER. IF OUR FORECAST
IS CORRECT, THAT WILL CHANGE /MORE AS ONE MOVES NORTHWEST THROUGH
THE FORECAST AREA/ AS THE DAY PROGRESSES.

WE MAINTAIN THE WIND ADVISORY WHERE IT IS. THIS CONCEIVABLY COULD
END UP BEING UPGRADED TO A HIGH WIND WARNING ALONG THE IMMEDIATE
COASTLINE. AS THE PREVIOUS FORECASTER NOTED, WE WILL ADDRESS
WHETHER THIS SYSTEM WILL REQUIRE A BLIZZARD WARNING ONCE THERE IS
CERTAINTY ABOUT WHETHER WE WILL MEET THE CRITERIA.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
A BIT OF LINGERING EVENING SNOW IS EXPECTED WEDNESDAY EVENING, THEN
HIGH PRESSURE WILL BEGIN TO BUILD IN AND WE ARE GOING WITH A DRY
FORECAST. WINDS WILL DIMINISH GRADUALLY. A BLEND OF GUIDANCE AND
CONTINUITY WERE USED FOR TEMPERATURES.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
THE UPPER AIR PATTERN CONTINUES TO SHOW A DEEP UPPER CLOSED LOW OFF
THE CANADIAN MARITIME PROVINCES AND WEAK RIDGING OVER THE ROCKY
MOUNTAINS. THE UPPER LOW SLOWLY RETROGRADES BACK ACROSS NORTHERN
QUEBEC WHILE THE UPPER RIDGE OUT WEST SHARPENS. THESE FEATURES ALONG
WITH PLENTIFUL SNOW COVER ACROSS THE AREA WILL ENSURE BELOW NORMAL
TEMPERATURES THROUGH THE EXTENDED PERIOD. HIGH TEMPERATURES SHOULD
ONLY REACH THE LOW TO MID 30S EACH DAY.

THERE ARE NO SIGNIFICANT WEATHER SYSTEMS IN THE EXTENDED
PERIOD...BUT A SHORT WAVE ROTATING SE ALONG THE SRN PERIPHERY OF THE
CANADIAN UPPER LOW WILL CAUSE LOW PRESSURE AND A FRONTAL SYSTEM TO
CROSS THE AREA MONDAY AND MONDAY NIGHT. THE POPS HAVE BEEN RAISED
SLIGHTLY FROM THE PREVIOUS FCST WITH SLIGHT CHC AND CHC POPS IN THE
NORTHERN AND CENTRAL SECTIONS OF OUR FORECAST AREA.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY AND SURROUNDING AREAS.

VFR CONDITIONS WILL REMAIN FOR A FEW MORE HOURS THIS AFTERNOON INTO
THIS EVENING AHEAD OF AN APPROACHING WINTER STORM. HOWEVER, THINGS
WILL BEGIN TO DETERIORATE THIS EVENING AS SNOW BEGINS TO MOVE INTO
THE AREA. AS WE MOVE THROUGH THE OVERNIGHT HOURS, ESPECIALLY AROUND
AND AFTER MIDNIGHT, SNOW IS EXPECTED TO INCREASE IN INTENSITY. BY
AROUND SUNRISE ON WEDNESDAY, OUR SOUTHERN TAFS, ACY/MIV, ARE
EXPECTED TO GET A PERIOD OF MIXING PRECIP OF RAIN, SLEET, AND/OR
SNOW. OUR ILG/PHL/PNE TAFS MAY GET A MIX OF SLEET WITH THE SNOW,
WHILE OUR ABE/RDG TAFS SHOULD RECEIVE ALL SNOW. THERE IS THE
POSSIBILITY THAT THE PRECIPITATION MAY END FOR A BRIEF PERIOD DURING
THIS TIME, HOWEVER, WE EXPECT SNOW TO PICK UP AGAIN AND INCREASE IN
INTENSITY BY MID-MORNING, AND LAST THROUGH MID-LATE AFTERNOON. SNOW
SHOULD BEGIN TO DISSIPATE AS WE APPROACH SUNDOWN WEDNESDAY, WHICH
SHOULD ALLOW CIGS AND VSBYS TO BEGIN TO IMPROVE. WE EXPECT THE SNOW
TO END BY MIDNIGHT, AND VFR CONDITIONS TO RETURN.

ON TOP OF THE SNOW, WINDS WILL BEGIN TO INCREASE THROUGH THE DAY
WEDNESDAY AND INTO WEDNESDAY NIGHT. WE EXPECT WIND GUSTS OF 25 TO 35
KNOTS, WHICH COULD PRODUCE SOME BLOWING AND DRIFTING SNOW LATE IN
THE DAY WEDNESDAY INTO WEDNESDAY NIGHT.

OUTLOOK...
GENERALLY VFR CONDITIONS ARE EXPECTED FOR THE REST OF THE WEEK AND
INTO THE EARLY WEEKEND. EACH DAY THERE MAY BE SOME GUSTY WINDS
DURING THE AFTERNOON, ESPECIALLY THURSDAY, ALONG WITH SOME AFTERNOON
CLOUDS WHICH MAY DEVELOP AROUND 2500-3500 FEET.

&&

.MARINE...
THE FORECAST IS STILL FOCUSING ON A MAJOR COASTAL STORM DEVELOPING
OFF THE MID-ATLANTIC COAST AND MOVING NORTHEAST ALONG THE EAST
COAST. CONDITIONS ARE RELATIVELY QUIET TO START THE FORECAST OFF
WITH GENERALLY LIGHT AND VARIABLE WINDS AND LOW SEAS AROUND 2 FEET.
HOWEVER, AS THE STORM BEGINS TO TAKE SHAPE OFF THE MID-ATLANTIC
COAST TONIGHT, WINDS WILL BEGIN TO INCREASE ACROSS OUR AREA, AND
SEAS WILL BE BUILDING AS WELL. AS THE STORM APPROACHES THE DELAWARE
AND NEW JERSEY COASTAL WATERS, WINDS WILL REALLY BEGIN TO INCREASE,
REACHING GALE FORCE EARLY ON WEDNESDAY AND EVENTUALLY STORM FORCE
LATER DURING THE DAY AND INTO WEDNESDAY EVENING. THEREFORE WE HAVE
ISSUED A STORM WATCH FOR THE COASTAL WATERS AND LOWER DELAWARE BAY,
AND WE STARTED IT AT 6AM /11Z/, THE SAME STARTING TIME THAT THE GALE
WARNING WAS FOR. A GALE WARNING REMAINS FOR THE LOWER DELAWARE BAY
SINCE WE THINK THERE MAY BE ENOUGH FRICTION OF THE LAND TO KNOCK
DOWN THE GUSTS IN THE NORTHERN BAY. THE WINDS WILL LIKELY DIMINISH
BACK TO GALE FORCE OVERNIGHT WEDNESDAY, AND POSSIBLY LAST INTO
THURSDAY, BUT WE WILL LET SUBSEQUENT SHIFTS DOWN GRADE TO GALE
WARNING WHEN THE TIME COMES. HIGH PRESSURE TRIES TO BUILD INTO THE
REGION LATE IN THE WEEK AND INTO THE WEEKEND, BUT DOES NOT MAKE IT
AS AN AREA OF LOW PRESSURE REMAINS ACROSS EASTERN CANADA. THIS WILL
KEEP A STEADY NORTHWEST FLOW FOR THE END OF THE WEEK AND INTO THE
WEEKEND, WHICH COULD KEEP SMALL CRAFT ADVISORY CRITERIA ACROSS THE
WATERS.

&&

.TIDES/COASTAL FLOODING...
TIDAL DEPARTURES WITH THE APPROACHING COASTAL STORM WILL BE
INCREASING. IT LOOKS LIKE THE STRONGEST WINDS WILL BE INCREASING
LATE IN THE DAY WEDNESDAY INTO WEDNESDAY NIGHT. THEREFORE, IT LOOKS
LIKE WEDNESDAY MORNING'S HIGH TIDE AND WEDNESDAY AFTERNOON'S HIGH
TIDE BOTH LOOK LIKE THEY SHOULD REMAIN BELOW MINOR FLOODING.
HOWEVER, THE HIGH TIDE ON THURSDAY MORNING STILL LOOKS LIKE IT COULD
REACH MINOR TIDAL FLOODING, SO WE MAY NEED AN ADVISORY IN LATER
SHIFTS.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...WINTER STORM WARNING FROM 7 PM THIS EVENING TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR PAZ054-055-060>062-067>071.
NJ...WINTER STORM WARNING FROM 7 PM THIS EVENING TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR NJZ001-007>010-012>022-026-027.
     WIND ADVISORY FROM 10 AM WEDNESDAY TO MIDNIGHT EST WEDNESDAY
     NIGHT FOR NJZ013-014-020>027.
     WINTER WEATHER ADVISORY FROM 7 PM THIS EVENING TO 7 AM EST
     WEDNESDAY FOR NJZ023>025.
     WINTER STORM WARNING FROM 7 AM WEDNESDAY TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR NJZ023>025.
DE...WINTER STORM WARNING FROM 7 PM THIS EVENING TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR DEZ001-002.
     WIND ADVISORY FROM 10 AM WEDNESDAY TO MIDNIGHT EST WEDNESDAY
     NIGHT FOR DEZ002>004.
     WINTER WEATHER ADVISORY FROM 7 PM THIS EVENING TO 7 AM EST
     WEDNESDAY FOR DEZ003-004.
     WINTER STORM WARNING FROM 7 AM WEDNESDAY TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR DEZ003-004.
MD...WINTER STORM WARNING FROM 7 PM THIS EVENING TO MIDNIGHT EST
     WEDNESDAY NIGHT FOR MDZ008-012-015-019-020.
MARINE...STORM WARNING FROM 6 AM WEDNESDAY TO 6 AM EST THURSDAY FOR
     ANZ431-450>455.
     GALE WARNING FROM 6 AM WEDNESDAY TO 6 AM EST THURSDAY FOR
     ANZ430.

&&

SYNOPSIS...DELISI
NEAR TERM...DELISI
SHORT TERM...DELISI
LONG TERM...O'HARA
AVIATION...ROBERTSON
MARINE...ROBERTSON
TIDES/COASTAL FLOODING...ROBERTSON

Hazardous weather outlook, Feb 9, 3:54 PM EST, 1 hour 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
354 PM EST TUE FEB 9 2010

DEZ001-MDZ008-012-015-019-020-NJZ001-007>010-012-015>019-PAZ054-055-
060>062-067>071-102100-
NEW CASTLE-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-
MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
354 PM EST TUE FEB 9 2010

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO MIDNIGHT
EST WEDNESDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST
MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW
JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL
PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA.

.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.

   WINTER STORM WARNING.

.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.

   WINTER STORM WARNING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

DEZ002-NJZ013-014-020>022-026-027-102100-
KENT-WESTERN MONMOUTH-EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
354 PM EST TUE FEB 9 2010

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO MIDNIGHT
EST WEDNESDAY NIGHT...
...WIND ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO MIDNIGHT EST
WEDNESDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...CENTRAL
NEW JERSEY AND SOUTHERN NEW JERSEY.

.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.

   WINTER STORM WARNING.

.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.

   WINTER STORM WARNING.
   WIND ADVISORY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

DEZ003-004-NJZ023>025-102100-
INLAND SUSSEX-DELAWARE BEACHES-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-
354 PM EST TUE FEB 9 2010

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
EST WEDNESDAY...
...WINTER STORM WARNING IN EFFECT FROM 7 AM WEDNESDAY TO MIDNIGHT
EST WEDNESDAY NIGHT...
...WIND ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO MIDNIGHT EST
WEDNESDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE AND
SOUTHERN NEW JERSEY.

.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.

   WINTER WEATHER ADVISORY.

.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.

   WINTER WEATHER ADVISORY.
   WINTER STORM WARNING.
   WIND ADVISORY.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

ANZ431-450>455-102100-
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
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-
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-
354 PM EST TUE FEB 9 2010

...STORM WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 AM EST
THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND
DELAWARE BAY WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT 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.

   STORM WARNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-102100-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
354 PM EST TUE FEB 9 2010

...GALE WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 AM EST THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DELAWARE BAY WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT 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.

   GALE WARNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

10 winter storm. Local standard time, as filed.

Winter Storm, Chester

When: February 9, 5:00 PM EST to February 10, 10:00 PM EST
Where: Chester forecast zone
Property damage: $5.0 million
Reported by: Trained Spotter

Winter Storm, Berks

When: February 9, 6:00 PM EST to February 10, 10:00 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 Storm, Montgomery

When: February 9, 6:00 PM EST to February 10, 10:00 PM EST
Where: Montgomery forecast zone
Property damage: $5.0 million
Reported by: Trained Spotter

Winter Storm, Bucks

When: February 9, 7:00 PM EST to February 11, 12:00 AM EST
Where: Bucks forecast zone
Property damage: $5.0 million
Reported by: Trained Spotter

Winter Storm, Delaware

When: February 9, 7:00 PM EST to February 10, 11:30 PM EST
Where: Delaware forecast zone
Property damage: $2.5 million
Reported by: Trained Spotter
Coordinates: 39.917, -75.399 (the zone’s center; the record gives no point)

Winter Storm, Philadelphia

When: February 9, 7:20 PM EST to February 10, 11:30 PM EST
Where: Philadelphia forecast zone
Deaths: 0 direct, 2 indirect
Property damage: $2.5 million
Reported by: Trained Spotter
Coordinates: 40.008, -75.134 (the zone’s center; the record gives no point)

Winter Storm, Lehigh

When: February 9, 7:30 PM EST to February 10, 8:30 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 Storm, Northampton

When: February 9, 7:30 PM EST to February 10, 8:30 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 Storm, Carbon

When: February 9, 10:00 PM EST to February 10, 11:30 PM EST
Where: Carbon forecast zone
Reported by: Trained Spotter
Coordinates: 40.918, -75.709 (the zone’s center; the record gives no point)

Winter Storm, Monroe

When: February 9, 10:00 PM EST to February 10, 11:30 PM EST
Where: Monroe forecast zone
Reported by: Trained Spotter
Coordinates: 41.058, -75.339 (the zone’s center; the record gives no point)

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Winter Storm, Philadelphia	2010-02-10	65	Male	Outside/Open Areas	Indirect
Winter Storm, Philadelphia	2010-02-10	66	Male	Outside/Open Areas	Indirect

What these are

Winter Storm: A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Pennsylvania in 2010 Every state in 2010 This day in weather history Warnings in Pennsylvania, February 2010

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: 212812, 212806, 212822, 212808, 212814, 212815, 212818, 212819, 212809, 212821.