Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 7, NWS Philadelphia/Mount Holly

February 25, 2011Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 25, 2011, 2:09 PM EST for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 25, 2011, 2:09 PM EST (19:09 UTC)
Expired
Feb 25, 2011, 3:00 PM EST
In force
51 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 58 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 25, 12:19 PM ESTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.2 hours before the alert went out and 140 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, Wallops Is Stn, VA at 12:00Z on 2011-02-25Temperature 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, Wallops Is Stn, VA at 12:00Z on 2011-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 468 square meters per square second.1939587897Sfc1 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
514 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
468 m²/s²
0-3 km storm-relative helicity
449 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.

224 
WUUS51 KPHI 251909
SVRPHI
NJC001-009-011-252000-
/O.NEW.KPHI.SV.W.0007.110225T1909Z-110225T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
209 PM EST FRI FEB 25 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAPE MAY...
  SOUTHEASTERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 300 PM EST

* AT 204 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 16 MILES SOUTHWEST OF BIVALVE...
  OR 13 MILES EAST OF DOVER...AND MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GOSHEN AND ELDORA AROUND 225 PM EST...
  DENNISVILLE AND WOODBINE AROUND 230 PM EST...
  SEAVILLE...STRATHMERE AND SEA ISLE CITY AROUND 235 PM EST...
  OCEAN CITY...MARMORA AND BEESLEYS POINT AROUND 240 PM EST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3925 7459 3912 7470 3907 7471 3902 7479
      3899 7479 3893 7488 3892 7495 3892 7497
      3899 7497 3911 7490 3916 7491 3918 7503
      3920 7505 3920 7510 3917 7514 3920 7519
      3923 7518 3930 7486 3934 7444
TIME...MOT...LOC 1909Z 258DEG 54KT 3912 7519

$$
 
TFG
1 follow-up statement
293 
WWUS51 KPHI 251936
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
236 PM EST FRI FEB 25 2011

NJC011-251945-
/O.CAN.KPHI.SV.W.0007.000000T0000Z-110225T2000Z/
CUMBERLAND NJ-
236 PM EST FRI FEB 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUMBERLAND COUNTY
IS CANCELLED...

THE SEVERE THUNDERSTORM WAS BEARING DOWN ON CAPE MAY COUNTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3925 7459 3912 7470 3907 7471 3902 7479
      3899 7479 3893 7488 3892 7495 3892 7497
      3899 7497 3911 7490 3916 7491 3921 7489
      3926 7489 3928 7487 3929 7485 3930 7486
      3934 7444
TIME...MOT...LOC 1935Z 258DEG 54KT 3913 7491

$$

NJC001-009-252000-
/O.CON.KPHI.SV.W.0007.000000T0000Z-110225T2000Z/
CAPE MAY NJ-ATLANTIC NJ-
236 PM EST FRI FEB 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EST
FOR SOUTH CENTRAL ATLANTIC AND CAPE MAY COUNTIES...

AT 234 PM EST...A SEVERE THUNDERSTORM WAS REPORTED.  THIS STORM WAS
LOCATED NEAR GOSHEN...OR 13 MILES NORTH OF CAPE MAY...MOVING EAST AT
50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILDWOOD CREST...WEST WILDWOOD...WILDWOOD...CAPE MAY COURT HOUSE...
NORTH WILDWOOD...BELLEPLAIN FOREST...DENNISVILLE...SCOTCH BONNET...
WOODBINE...STONE HARBOR...AVALON...CORBIN CITY...SEA ISLE CITY...
SEAVILLE...STRATHMERE...MARMORA...BEESLEYS POINT...OCEAN CITY...
SOMERS POINT...LONGPORT AND MARGATE CITY

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD 
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A 
SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.


A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3925 7459 3912 7470 3907 7471 3902 7479
      3899 7479 3893 7488 3892 7495 3892 7497
      3899 7497 3911 7490 3916 7491 3921 7489
      3926 7489 3928 7487 3929 7485 3930 7486
      3934 7444
TIME...MOT...LOC 1935Z 258DEG 54KT 3913 7491

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 25, 4:56 AM ESTFreezing Rain AdvisoryPHISussex5 hr
Feb 25, 7:53 AM ESTSpecial Weather StatementPHIAtlantic, Cape May, Cumberland82 min
Feb 25, 9:15 AM ESTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more90 min
Feb 25, 12:44 PM ESTSpecial Weather StatementPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Salem and 1 more61 min
Feb 25, 1:04 PM ESTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester56 min
Feb 25, 1:11 PM ESTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem64 min
Feb 25, 1:16 PM ESTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean59 min
Feb 25, 1:23 PM ESTSpecial Marine WarningPHI67 min
Feb 25, 1:25 PM ESTSpecial Marine WarningPHI65 min
Feb 25, 1:48 PM ESTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more57 min
Feb 25, 1:57 PM ESTSpecial Marine WarningPHI63 min
Feb 25, 2:16 PM ESTSpecial Marine WarningPHI89 min
Feb 25, 3:39 PM ESTSpecial Marine WarningPHI41 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011Every severe thunderstorm warning 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.