Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 217, NWS Philadelphia/Mount Holly

August 1, 2011Cumberland County, Gloucester County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2011, 2:44 PM EDT for Cumberland County, Gloucester County, Salem County, New Jersey. It was in force for 29 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: Aug 1, 2011, 2:44 PM EDT (18:44 UTC)
Expired: Aug 1, 2011, 3:13 PM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.7 hours before the alert went out and 82 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 307 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1512 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -192 m²/s²
0-3 km storm-relative helicity: -166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

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

404 
WUUS51 KPHI 011844
SVRPHI
NJC011-015-033-012000-
/O.NEW.KPHI.SV.W.0217.110801T1844Z-110801T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
244 PM EDT MON AUG 1 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
  SOUTH CENTRAL GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  EASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 400 PM EDT

* AT 240 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
  LOCATED NEAR ELMER...OR 14 MILES NORTHWEST OF VINELAND...AND MOVING 
  SOUTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OLIVET AROUND 305 PM EDT...
  SEABROOK FARMS AROUND 315 PM EDT...
  ROSENHAYN AROUND 330 PM EDT...
  BRIDGETON AROUND 340 PM EDT...
  FAIRTON...CEDARVILLE AND MILLVILLE AROUND 400 PM EDT...

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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3935 7492 3930 7533 3931 7533 3967 7527
      3968 7507
TIME...MOT...LOC 1842Z 354DEG 13KT 3960 7518

$$
 
TFG

2 follow-up statements

863 
WWUS51 KPHI 011901
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
301 PM EDT MON AUG 1 2011

NJC011-015-033-012000-
/O.CON.KPHI.SV.W.0217.000000T0000Z-110801T2000Z/
SALEM NJ-CUMBERLAND NJ-GLOUCESTER NJ-
301 PM EDT MON AUG 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR SOUTH CENTRAL GLOUCESTER...NORTH CENTRAL CUMBERLAND AND
SOUTHEASTERN SALEM COUNTIES...

AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS 
TO 60 MPH.  THIS STORM WAS LOCATED NEAR ELMER...OR 11 MILES
NORTHWEST OF VINELAND...MOVING SOUTHEAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MALAGA...ROSENHAYN...NEWFIELD...SOUTH VINELAND...MILLVILLE AND
CUMBERLAND

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO DAMAGING WINDS...LIGHTNING IS OCCURRING WITH THIS 
STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES 
NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU 
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3936 7513 3944 7520 3964 7522 3965 7506
      3964 7505 3937 7493
TIME...MOT...LOC 1900Z 317DEG 15KT 3957 7512

$$

TFG

267 
WWUS51 KPHI 011913
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
313 PM EDT MON AUG 1 2011

NJC011-015-033-011921-
/O.CAN.KPHI.SV.W.0217.000000T0000Z-110801T2000Z/
SALEM NJ-CUMBERLAND NJ-GLOUCESTER NJ-
313 PM EDT MON AUG 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GLOUCESTER...
NORTH CENTRAL CUMBERLAND AND SOUTHEASTERN SALEM COUNTIES IS
CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3936 7513 3944 7520 3964 7522 3965 7506
      3964 7505 3937 7493
TIME...MOT...LOC 1911Z 317DEG 15KT 3954 7508

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 10:13 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	62 min
Jul 31, 10:58 PM EDT	Special Weather Statement	PHI	Morris	62 min
Aug 1, 1:49 AM EDT	Special Marine Warning	PHI		56 min
Aug 1, 1:50 AM EDT	Special Weather Statement	PHI	Monmouth	55 min
Aug 1, 1:35 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	3 hr
Aug 1, 2:11 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	94 min
Aug 1, 4:09 PM EDT	Special Weather Statement	PHI	Camden	66 min
Aug 1, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	69 min
Aug 1, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	70 min
Aug 1, 6:03 PM EDT	Special Marine Warning	PHI		57 min
Aug 1, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	59 min
Aug 1, 6:17 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester	3 hr
Aug 1, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Aug 1, 6:47 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	73 min
Aug 1, 7:01 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cumberland, Gloucester, Salem	119 min
Aug 1, 7:07 PM EDT	Special Marine Warning	PHI		83 min
Aug 1, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	59 min
Aug 1, 7:17 PM EDT	Special Marine Warning	PHI		118 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011 Every 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.