Alert archive / New Jersey / Winter Storm Watches in 2011

Winter Storm Watch 1, NWS Philadelphia/Mount Holly

January 7, 20118 counties in New Jersey

NWS Philadelphia/Mount Holly issued this winter storm watch at Jan 7, 2011, 3:34 PM EST for 8 counties in New Jersey. It took effect at Jan 8, 2011, 10:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 7, 2011, 3:34 PM EST (20:34 UTC)
In effect from
Jan 8, 2011, 10:00 AM EST
Expired
Jan 8, 2011, 3:22 AM EST
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 20:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.6 hours before the alert went out and 106 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2011-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2011-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
510 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

914 
WWUS41 KPHI 072034
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
334 PM EST FRI JAN 7 2011

DEZ001-002-NJZ009-010-012>015-PAZ060-067>071-081000-
/O.NEW.KPHI.WW.Y.0002.110108T1500Z-110109T0600Z/
NEW CASTLE-KENT-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-BERKS-CHESTER-MONTGOMERY-BUCKS-DELAWARE-
PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
READING...WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...
PHILADELPHIA
334 PM EST FRI JAN 7 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 1 AM
EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 AM
SATURDAY TO 1 AM EST SUNDAY.

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: TWO TO FOUR INCHES. 

* TIMING: BEGINNING OVER CENTRAL AND NORTHERN DELAWARE BY AROUND
  10 AM SATURDAY AND SPREADING NORTHEAST THROUGH SOUTHEASTERN
  PENNSYLVANIA AND NEW JERSEY BY EARLY AFTERNOON. ENDING EARLY IN
  THE EVENING OVER CENTRAL AND NORTHERN DELAWARE AND LATER IN THE
  EVENING ELSEWHERE.

* IMPACTS: SNOW WILL STICK TO ROADWAYS, ESPECIALLY UNTREATED ONES.
  SNOWFALL RATES WILL CAUSE THE VISIBILITY TO DROP TO OR BELOW
  ONE-HALF MILE ON OCCASION. DRIVING WILL BECOME DIFFICULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ003-004-MDZ008-012-015-019-020-081000-
/O.NEW.KPHI.WW.Y.0002.110108T1200Z-110109T0300Z/
INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-
INCLUDING THE CITIES OF...GEORGETOWN...REHOBOTH BEACH...ELKTON...
CHESTERTOWN...CENTREVILLE...EASTON...DENTON
334 PM EST FRI JAN 7 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TO 10 PM EST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 7 AM TO 10 PM
EST SATURDAY.

* PRECIPITATION TYPE: SNOW. 

* ACCUMULATIONS: ONE TO THREE INCHES. 

* TIMING: BEGINNING AROUND DAYBREAK AND LASTING THROUGH THE
  AFTERNOON.

* IMPACTS: SNOW WILL STICK TO UNTREATED ROADWAYS. SNOWFALL RATES
  WILL CAUSE THE VISIBILITY TO DROP TO OR BELOW ONE MILE ON
  OCCASION. DRIVING WILL BECOME DIFFICULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

NJZ016>027-081000-
/O.NEW.KPHI.WS.A.0001.110108T1500Z-110109T0600Z/
SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...PENNSVILLE...GLASSBORO...CAMDEN...
CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...
HAMMONTON...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST
334 PM EST FRI JAN 7 2011

...WINTER STORM WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
LATE SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH
LATE SATURDAY NIGHT. 

* PRECIPITATION TYPE: SNOW. 

* ACCUMULATIONS: FOUR INCHES OR MORE. 

* TIMING: BEGINNING OVER FAR SOUTHERN AND SOUTHWESTERN NEW JERSEY
  BY AROUND 10 AM SATURDAY AND SPREADING NORTHEAST TO NEAR
  INTERSTATE 195 BY AROUND NOON. ENDING IN THE EVENING.

* IMPACTS: SNOW WOULD STICK TO ROADWAYS, ESPECIALLY BUT NOT
  EXCLUSIVELY UNTREATED ONES. SNOWFALL RATES WOULD CAUSE THE
  VISIBILITY TO DROP TO OR BELOW ONE-HALF MILE FOR A PERIOD OF
  TIME. DRIVING WOULD BECOME HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

KRUZDLO/DELISI
1 follow-up statement
487 
WWUS41 KPHI 080822
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
322 AM EST SAT JAN 8 2011

NJZ020>027-082115-
/O.UPG.KPHI.WS.A.0001.110108T1500Z-110109T0600Z/
/O.NEW.KPHI.WS.W.0001.110108T1300Z-110109T0300Z/
OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...JACKSON...MILLVILLE...HAMMONTON...
CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY...
LONG BEACH ISLAND...WHARTON STATE FOREST
322 AM EST SAT JAN 8 2011

...WINTER STORM WARNING IN EFFECT FROM 8 AM THIS MORNING TO 10 PM
EST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM 8 AM THIS
MORNING TO 10 PM EST THIS EVENING. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: 3 TO 5 INCHES.

* TIMING: LIGHT SNOW MAY BEGIN BEFORE 8 AM ACROSS FAR SOUTHERN
  AREAS...AND MOVE NORTHEAST DURING THE MORNING. LOOK FOR THE SNOW
  TO BECOME STEADIER AND HEAVIER DURING THE LATE MORNING INTO THE
  AFTERNOON. THE SNOW WILL TAPER OFF TO FLURRIES IN THE EVENING.

* IMPACTS: SNOW WOULD STICK TO ROADWAYS... ESPECIALLY BUT NOT
  EXCLUSIVELY UNTREATED ONES. SNOWFALL RATES WOULD CAUSE THE
  VISIBILITY TO DROP TO OR BELOW ONE-HALF MILE FOR A PERIOD OF
  TIME. DRIVING WOULD BECOME HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

NJZ016>019-082115-
/O.UPG.KPHI.WS.A.0001.110108T1500Z-110109T0600Z/
/O.EXB.KPHI.WW.Y.0002.110108T1300Z-110109T0300Z/
SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
INCLUDING THE CITIES OF...PENNSVILLE...GLASSBORO...CAMDEN...
CHERRY HILL...MOORESTOWN...MOUNT HOLLY
322 AM EST SAT JAN 8 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO
10 PM EST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 8 AM THIS
MORNING TO 10 PM EST THIS EVENING. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: 2 TO 4 INCHES.

* TIMING: BEGINNING BY 8 AM...SPREADING NORTHEAST DURING THE
  MORNING. THE SNOW IS EXPECTED TO TAPER TO FLURRIES IN THE
  EVENING.

* IMPACTS: SNOW WOULD STICK TO ROADWAYS... ESPECIALLY BUT NOT
  EXCLUSIVELY UNTREATED ONES. SNOWFALL RATES WOULD CAUSE THE
  VISIBILITY TO DROP TO OR BELOW ONE-HALF MILE FOR A PERIOD OF
  TIME. DRIVING WOULD BECOME HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

PAZ061-082115-
/O.EXB.KPHI.WW.Y.0002.110108T1300Z-110109T0300Z/
LEHIGH-
INCLUDING THE CITY OF...ALLENTOWN
322 AM EST SAT JAN 8 2011

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO
10 PM EST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR...WHICH IS IN EFFECT FROM 8 AM THIS MORNING
TO 10 PM EST THIS EVENING.

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: 2 TO 4 INCHES.

* TIMING: THE SNOW WILL BEGIN BY 8 AM...AND BECOME STEADIER DURING
  THE LATE MORNING AND AFTERNOON. THE SNOW WILL TAPER OFF TO
  FLURRIES DURING THE EVENING.

* IMPACTS: SNOW WILL STICK TO ROADWAYS... ESPECIALLY UNTREATED 
  ONES. SNOWFALL RATES WILL CAUSE THE VISIBILITY TO DROP TO OR 
  BELOW ONE-HALF MILE ON OCCASION. DRIVING WILL BECOME 
  DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ001-002-NJZ009-010-012>015-PAZ060-067>071-082115-
/O.EXT.KPHI.WW.Y.0002.110108T1300Z-110109T0300Z/
NEW CASTLE-KENT-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-BERKS-CHESTER-MONTGOMERY-BUCKS-DELAWARE-
PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
READING...WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...
PHILADELPHIA
322 AM EST SAT JAN 8 2011

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING
TO 10 PM EST THIS EVENING...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 8 AM THIS
MORNING TO 10 PM EST THIS EVENING. 

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: 2 TO 4 INCHES.

* TIMING: THE SNOW WILL BEGIN BY 8 AM ACROSS DELAWARE AND
  SOUTHEAST PENNSYLVANIA...AND BECOME STEADIER DURING THE LATE
  MORNING INTO THE AFTERNOON. THE SNOW WILL TAPER TO FLURRIES
  DURING THE EVENING.

* IMPACTS: SNOW WILL STICK TO ROADWAYS... ESPECIALLY UNTREATED 
  ONES. SNOWFALL RATES WILL CAUSE THE VISIBILITY TO DROP TO OR 
  BELOW ONE-HALF MILE ON OCCASION. DRIVING WILL BECOME 
  DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ003-004-MDZ008-012-015-019-020-082115-
/O.EXT.KPHI.WW.Y.0002.110108T1200Z-110109T0100Z/
INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-
INCLUDING THE CITIES OF...GEORGETOWN...REHOBOTH BEACH...ELKTON...
CHESTERTOWN...CENTREVILLE...EASTON...DENTON
322 AM EST SAT JAN 8 2011

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 7 AM THIS MORNING
TO 8 PM EST THIS EVENING...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 7 AM THIS
MORNING TO 8 PM EST THIS EVENING. 

* PRECIPITATION TYPE: SNOW.

* ACCUMULATIONS: 1 TO 3 INCHES.

* TIMING: BEGINNING AROUND DAYBREAK AND LASTING THROUGH THE 
  AFTERNOON. 

* IMPACTS: SNOW WILL STICK TO UNTREATED ROADWAYS. SNOWFALL RATES 
  WILL CAUSE THE VISIBILITY TO DROP TO OR BELOW ONE MILE ON 
  OCCASION. DRIVING WILL BECOME DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 7, 3:34 PM ESTWinter Weather AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more27 hr
Jan 7, 4:04 PM ESTGale WatchPHI11 hr

Nearby

Winter Storm Watches in New Jersey, 2011Every winter storm watch in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.