Alert archive / New Jersey / Wind Advisories in 2008

Wind Advisory 13, NWS Philadelphia/Mount Holly

December 21, 20084 states

NWS Philadelphia/Mount Holly issued this wind advisory at Dec 21, 2008, 2:08 PM EST for 4 states. It took effect at Dec 21, 2008, 4:00 PM EST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Dec 21, 2008, 2:08 PM EST (19:08 UTC)
In effect from
Dec 21, 2008, 4:00 PM EST
Expired
Dec 22, 2008, 1:00 PM EST
In force
21 hr
Issued by
NWS Philadelphia/Mount Holly
All 31 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 19:12 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.1 hours before the alert went out and 219 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, Washington/Dulle, VA at 12:00Z on 2008-12-21Temperature 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, Washington/Dulle, VA at 12:00Z on 2008-12-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 400 square meters per square second.1939587897117136156Sfc1 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
554 m above ground
0-6 km bulk shear
107 kt
0-1 km storm-relative helicity
400 m²/s²
0-3 km storm-relative helicity
318 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 
WWUS71 KPHI 211908
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
208 PM EST SUN DEC 21 2008

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-067>071-221000-
/O.NEW.KPHI.WI.Y.0013.081221T2100Z-081222T1800Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-
SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-
GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-
NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...NEWTON...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
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...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...WEST CHESTER...
NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
208 PM EST SUN DEC 21 2008

...WIND ADVISORY IN EFFECT UNTIL 1 PM EST MONDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 1 PM EST MONDAY. 

THE DOUBLE BARREL LOW PRESSURE SYSTEMS AROUND THE AREA WILL MERGE
INTO ONE NEAR EASTERN MAINE OVERNIGHT AND CONTINUE TO INTENSIFY ON
ITS WAY THROUGH THE CANADIAN MARITIMES ON MONDAY.

WEST WINDS WILL CONTINUE TO INCREASE TONIGHT AND PROBABLY REACH
THEIR PEAK DURING THE FIRST HALF OF THE DAY ON MONDAY. SUSTAINED
WEST WINDS WILL INCREASE TO 20 TO 30 MPH WITH PEAK GUSTS REACHING
AROUND 45 MPH.

THESE WIND SPEEDS SHOULD KNOCK DOWN SOME WEAK TREES, TREE LIMBS
AND WIRES. THE TREES ARE GOING TO BE UNDER PRESSURE FROM SEPARATE
FORCES. FROM THE INTERSTATE 95 CORRIDOR AND NORTHWESTWARD THERE IS
STILL ICE ON SOME TREES. THIS WILL MAKE IT EASIER FOR THEM TO BE
SNAPPED. FARTHER TO THE SOUTHEAST, PRECIPITATION TOTALS SO FAR
THIS MONTH HAVE AVERAGED TWICE THE NORMAL DECEMBER AMOUNT ALREADY.
THE SUPERSATURATED SOIL WILL MAKE IT EASIER FOR SHALLOW ROOTED
TREES TO BE KNOCKED DOWN.

IN ADDITION TO THE WIND, THIS AIR MASS WILL BE THE COLDEST ONE OF
THE SEASON SO FAR. WIND CHILL FACTORS COME MONDAY MORNING WILL
AVERAGE AROUND ZERO WITH READINGS WELL BELOW ZERO OVER THE HIGHER
TERRAIN. PLEASE DRESS APPROPRIATELY IF YOU HAVE TO SPEND MUCH TIME
OUTDOORS. 

BE PREPARED FOR THE LIKELIHOOD OF SCATTERED POWER OUTAGES. ALSO
IF POSSIBLE DO NOT PARK VEHICLES UNDER TREES THAT ARE ENCASED IN
ICE OR ARE SHALLOW ROOTED SUCH AS WILLOWS. A WIND ADVISORY MEANS
THAT WIND GUSTS OF AROUND 45 MPH ARE EXPECTED. WINDS THIS STRONG
CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES
ESPECIALLY ON NORTH TO SOUTH OVERPASSES. USE EXTRA CAUTION. WINDS
WILL DIMINISH MONDAY AFTERNOON AS THE INTENSE LOW PRESSURE SYSTEM
SLOWLY MOVES FARTHER AWAY.

$$

STAUBER/GIGI
2 follow-up statements
000 
WWUS71 KPHI 220840
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
340 AM EST MON DEC 22 2008

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-067>071-221800-
/O.CON.KPHI.WI.Y.0013.000000T0000Z-081222T1800Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-
SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-
GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-
NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...NEWTON...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
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...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...WEST CHESTER...
NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
340 AM EST MON DEC 22 2008

...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 100 PM.

LOW PRESSURE WILL CONTINUE TO INTENSIFY AS IT MOVES ACROSS
CANADAS ATLANTIC PROVINCES TODAY.

SUSTAINED WEST WINDS OF 20 TO 30 MPH WITH PEAK GUSTS REACHING
AROUND 45 MPH ARE EXPECTED FOR THIS MORNING. WINDS WILL BEGIN TO
DIMINISH GRADUALLY THIS AFTERNOON.

WIND GUSTS OF 45 MPH ARE CAPABLE OF KNOCKING DOWN WEAK TREES,
TREE LIMBS AND WIRES. THE TREES ARE GOING TO BE UNDER PRESSURE
FROM SEPARATE FORCES. FROM THE INTERSTATE 95 CORRIDOR
NORTHWESTWARD, THERE IS STILL ICE ON SOME TREES, MAKING THEM
EASIER TO SNAP. TO THE SOUTHEAST, PRECIPITATION TOTALS SO FAR
THIS MONTH HAVE AVERAGED TWICE THE NORMAL AMOUNT. THE
SUPERSATURATED SOIL WILL MAKE IT EASIER FOR SHALLOW ROOTED TREES
TO BE KNOCKED DOWN.

IN ADDITION TO THE WIND, THIS AIR MASS WILL BE THE COLDEST ONE OF
THE SEASON, SO FAR. WIND CHILL VALUES WILL AVERAGE AROUND ZERO
THIS MORNING, WITH READINGS WELL BELOW ZERO IN THE HIGHER TERRAIN.
PLEASE DRESS APPROPRIATELY IF YOU HAVE TO SPEND MUCH TIME
OUTDOORS.

BE PREPARED FOR THE LIKELIHOOD OF SCATTERED POWER OUTAGES. ALSO,
IF POSSIBLE, DO NOT PARK VEHICLE UNDER TREES THAT ARE ENCASED IN
ICE OR ARE SHALLOW ROOTED, SUCH AS WILLOWS.

A WIND ADVISORY MEANS THAT WIND GUSTS OF AROUND 45 MPH ARE EXPECTED.
DRIVING MAY BECOME DIFFICULT, ESPECIALLY FOR HIGH PROFILE VEHICLES.
USE EXTRA CARE.

WINDS WILL DIMINISH ON MONDAY NIGHT, AS THE INTENSE LOW PRESSURE
SYSTEM MOVES FARTHER AWAY FROM OUR REGION.

$$
000 
WWUS71 KPHI 221757
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1257 PM EST MON DEC 22 2008

DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-
055-060>062-067>071-221900-
/O.EXP.KPHI.WI.Y.0013.000000T0000Z-081222T1800Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-
SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-
GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-
ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-
NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON...NEWTON...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...SANDY HOOK...TRENTON...
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...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...WEST CHESTER...
NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
1257 PM EST MON DEC 22 2008

...WIND ADVISORY WILL EXPIRE AT 1 PM EST THIS AFTERNOON...

THE WIND ADVISORY WILL EXPIRE AT 1 PM EST THIS AFTERNOON. 

RECENT OBSERVATIONS INDICATE THAT WINDS HAVE STARTED TO SUBSIDE.
WITH THE GUSTY WINDS STARTING TO DECREASE, THE WIND ADVISORY WILL
BE ALLOWED TO EXPIRE AT 1PM.

$$

HEAVENER

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 21, 2:07 PM ESTWind Chill AdvisoryPHICarbon, Monroe23 hr

Nearby

Wind Advisories in New Jersey, 2008Wind Advisories in Pennsylvania, 2008Wind Advisories in Maryland, 2008Every wind advisory in 2008

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.