Alert archive / Pennsylvania / Ice Storm Warnings in 2007

Ice Storm Warning 2, NWS Philadelphia/Mount Holly

December 2, 2007Morris County, Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this ice storm warning at Dec 2, 2007, 11:03 PM EST for Morris County, Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 2, 2007, 11:03 PM EST (04:03 UTC)
Expired
Dec 3, 2007, 3:13 AM EST
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 122 km from the middle of the area, began a volume at 04:03 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

Brookhaven, NY (KOKX), launched 00:00Z, 4.1 hours before the alert went out and 202 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, Brookhaven, NY at 00:00Z on 2007-12-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2007-12-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 552 square meters per square second.1939587897117Sfc1 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
578 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
552 m²/s²
0-3 km storm-relative helicity
613 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.

000 
WWUS41 KPHI 030403
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1103 PM EST SUN DEC 2 2007

...ICY CONDITIONS EXPECTED OVERNIGHT...

NJZ001-PAZ054-055-031000-
/O.CAN.KPHI.WS.W.0004.000000T0000Z-071203T1100Z/
/O.NEW.KPHI.IS.W.0002.071203T0403Z-071203T1000Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
1103 PM EST SUN DEC 2 2007

...ICE STORM WARNING IN EFFECT UNTIL 5 AM EST MONDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN ICE
STORM WARNING, WHICH IS IN EFFECT UNTIL 5 AM EST MONDAY. THE
WINTER STORM WARNING HAS BEEN CANCELLED.

AN AREA OF MODERATE TO HEAVY RAIN WILL CONTINUE TO MOVE THROUGH
THE AREA, AND TEMPERATURES CONTINUE TO REMAIN BELOW FREEZING. MOST
ALL OF THE PRECIPITATION WILL END BY SUNRISE MONDAY, HOWEVER NOT
BEFORE AN ACCUMULATION OF ICE OF AROUND ONE HALF OF AN INCH
OCCURS.

ICE ACCUMULATIONS WILL LEAD TO FALLING TREE BRANCHES AND SNAPPED
POWER LINES, RESULTING IN POWER OUTAGES. THE FREEZING RAIN WILL
ALSO MAKE TRAVEL ON UNTREATED ROADS DANGEROUS OR IMPOSSIBLE. IF
YOU MUST TRAVEL, ALLOW EXTRA TIME TO REACH YOUR DESTINATION, AND
LET SOMEONE KNOW YOUR TRAVEL PLANS AND CARRY A CELLULAR PHONE.

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. 

$$

NJZ007-008-PAZ060>062-031000-
/O.UPG.KPHI.WW.Y.0014.000000T0000Z-071203T0600Z/
/O.NEW.KPHI.IS.W.0002.071203T0403Z-071203T1000Z/
WARREN-MORRIS-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...READING...
ALLENTOWN...BETHLEHEM...EASTON
1103 PM EST SUN DEC 2 2007

...ICE STORM WARNING IN EFFECT UNTIL 5 AM EST MONDAY...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN ICE
STORM WARNING, WHICH IS IN EFFECT UNTIL 5 AM EST MONDAY. THE
WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

AN AREA OF MODERATE TO HEAVY RAIN WILL CONTINUE TO MOVE THROUGH
THE AREA, AND TEMPERATURES CONTINUE TO REMAIN BELOW FREEZING. MOST
ALL OF THE PRECIPITATION WILL END BY SUNRISE MONDAY, HOWEVER NOT
BEFORE AN ACCUMULATION OF AROUND ONE HALF OF AN INCH OCCURS.

ICE ACCUMULATIONS WILL LEAD TO FALLING TREE BRANCHES AND SNAPPED
POWER LINES, RESULTING IN POWER OUTAGES. THE FREEZING RAIN WILL
ALSO MAKE TRAVEL ON UNTREATED ROADS DANGEROUS OR IMPOSSIBLE. IF
YOU MUST TRAVEL, ALLOW EXTRA TIME TO REACH YOUR DESTINATION, AND
LET SOMEONE KNOW YOUR TRAVEL PLANS AND CARRY A CELLULAR PHONE.

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. 

$$

NJZ009-010-PAZ067>069-030600-
/O.CON.KPHI.WW.Y.0014.000000T0000Z-071203T0600Z/
HUNTERDON-SOMERSET-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...
WEST CHESTER...NORRISTOWN...DOYLESTOWN
1103 PM EST SUN DEC 2 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
MONDAY. 

MODERATE TO OCCASIONALLY HEAVY RAIN POSSIBLY MIXED WITH SLEET
WILL CONTINUE FOR AWHILE OVERNIGHT WHERE TEMPERATURES IN MAY AREAS
ARE AT OR BELOW FREEZING. HOWEVER, WARMER AIR WILL ARRIVE
OVERNIGHT AND CHANGE THE PRECIPITATION OVER TO PLAIN RAIN. THE
RAIN WILL COME TO AN END MONDAY MORNING. ICE ACCUMULATION OF A
TENTH TO A QUARTER OF AN INCH IS EXPECTED ESPECIALLY IN THE COLDER
AREAS.

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.

$$

NJZ012-015-030600-
/O.CON.KPHI.WW.Y.0014.000000T0000Z-071203T0600Z/
MIDDLESEX-MERCER-
INCLUDING THE CITIES OF...NEW BRUNSWICK...TRENTON
1103 PM EST SUN DEC 2 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
MONDAY. 

MODERATE TO OCCASIONALLY HEAVY RAIN POSSIBLY MIXED WITH SLEET
WILL CONTINUE FOR AWHILE OVERNIGHT WHERE TEMPERATURES IN MAY AREAS
ARE AT OR BELOW FREEZING. HOWEVER, WARMER AIR WILL ARRIVE
OVERNIGHT AND CHANGE THE PRECIPITATION OVER TO PLAIN RAIN. THE
RAIN WILL COME TO AN END MONDAY MORNING. ICE ACCUMULATION OF A
TENTH TO A QUARTER OF AN INCH IS EXPECTED ESPECIALLY IN THE COLDER
AREAS.

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.

$$

GORSE
2 follow-up statements
000 
WWUS41 KPHI 030556
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1256 AM EST MON DEC 3 2007

...ICY CONDITIONS EXPECTED OVERNIGHT...

NJZ009-010-012-015-PAZ067>069-030700-
/O.CAN.KPHI.WW.Y.0014.000000T0000Z-071203T0600Z/
HUNTERDON-SOMERSET-MIDDLESEX-MERCER-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...TRENTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
1256 AM EST MON DEC 3 2007

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
WINTER WEATHER ADVISORY. 

TEMPERATURES HAVE SLOWLY WARMED OVER THE AREA AND MUCH OF THE
PRECIPITATION HAS CHANGED TO ALL RAIN. THE RAINS WILL GRADUALLY
TAPER OFF FROM WEST TO EAST BETWEEN 3 AM AND 6 AM.

$$

NJZ001-007-008-PAZ054-055-060>062-031000-
/O.CON.KPHI.IS.W.0002.000000T0000Z-071203T1000Z/
SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...
EASTON
1256 AM EST MON DEC 3 2007

...ICE STORM WARNING REMAINS IN EFFECT UNTIL 5 AM EST EARLY THIS
MORNING...

AN ICE STORM WARNING REMAINS IN EFFECT UNTIL 5 AM EST EARLY THIS
MORNING. 

AN AREA OF MODERATE TO HEAVY RAIN WILL CONTINUE TO MOVE THROUGH
THE AREA... AND TEMPERATURES CONTINUE TO REMAIN BELOW FREEZING.
MOST ALL OF THE PRECIPITATION WILL TAPER OFF BY 5 AM... HOWEVER
NOT BEFORE AN ACCUMULATION OF AROUND ONE HALF OF AN INCH OCCURS.

ICE ACCUMULATIONS WILL LEAD TO FALLING TREE BRANCHES AND SNAPPED
POWER LINES... RESULTING IN POWER OUTAGES. THE FREEZING RAIN WILL
ALSO MAKE TRAVEL ON UNTREATED ROADS DANGEROUS OR IMPOSSIBLE. IF
YOU MUST TRAVEL... ALLOW EXTRA TIME TO REACH YOUR DESTINATION...
AND LET SOMEONE KNOW YOUR TRAVEL PLANS AND CARRY A CELLULAR
PHONE.

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED.

$$

OHARA
000 
WWUS41 KPHI 030813
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
313 AM EST MON DEC 3 2007


NJZ001-007-031300-
/O.CAN.KPHI.IS.W.0002.000000T0000Z-071203T1000Z/
/O.NEW.KPHI.ZR.Y.0003.071203T0813Z-071203T1300Z/
SUSSEX-WARREN-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON
313 AM EST MON DEC 3 2007

...FREEZING RAIN ADVISORY IN EFFECT UNTIL 8 AM EST THIS MORNING...
...ICE STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM EST THIS MORNING.
THE ICE STORM WARNING HAS BEEN CANCELLED. 

ALTHOUGH THE WIDESPREAD FREEZING RAIN HAS TAPERED OFF AND ENDED,
TEMPERATURES IN MANY AREAS REMAIN BELOW FREEZING. TEMPERATURES
WILL BE SLOW TO RISE EARLY THIS MORNING AND SOME AREAS COULD STILL
BE BELOW FREEZING AS OF 8 AM. IN ADDITION, THERE WAS AN AREA OF
RAIN SHOWERS AND FREEZING RAIN ASSOCIATED WITH A COLD FRONT THAT
WILL MOVE THROUGH THE REGION EARLY THIS MORNING. THIS MEANS
ANOTHER PERIOD OF FREEZING RAIN IS POSSIBLE UNTIL 8 AM, AFTER
WHICH, TEMPERATURES SHOULD MOVE ABOVE FREEZING AND PRECIPITATION
TEMPORARILY ENDS.

ADDITIONAL LIGHT FREEZING RAIN ACCUMULATIONS WILL KEEP UNTREATED
ROADWAYS SLIPPERY. MOTORISTS SHOULD BE PREPARED FOR THE ICY CONDITIONS.

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

$$

NJZ008-PAZ054-055-060>062-030915-
/O.CAN.KPHI.IS.W.0002.000000T0000Z-071203T1000Z/
MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...MORRISTOWN...JIM THORPE...STROUDSBURG...
READING...ALLENTOWN...BETHLEHEM...EASTON
313 AM EST MON DEC 3 2007

...ICE STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE ICE
STORM WARNING. 

TEMPERATURES HAVE MOVED ABOVE FREEZING AND FREEZING RAIN IS NO
LONGER EXPECTED.

$$

STAUBER

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 3, 3:13 AM ESTFreezing Rain AdvisoryPHISussex, Warren5 hr
Dec 3, 2:31 PM ESTMarine Weather StatementPHI21 hr

Nearby

Ice Storm Warnings in Pennsylvania, 2007Ice Storm Warnings in New Jersey, 2007Every ice storm warning in 2007

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.