Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 186, NWS Philadelphia/Mount Holly

July 22, 20114 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2011, 2:31 PM EDT for 4 counties in New Jersey. It was in force for 59 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 22, 2011, 2:31 PM EDT (18:31 UTC)
Expired: Jul 22, 2011, 3:30 PM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 21 km from the middle of the area, began a volume at 18:34 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 2:41 PM EDT	TSTM WND GST 60	Mcguire Afb, NJ	RUNWAY ANEMOMETER AT AFB FROM AFB FORECASTER
Jul 22, 3:15 PM EDT	HAIL 0.75	Brown Mills, NJ	RELAYED BY AFB FORECASTER

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.5 hours before the alert went out and 147 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: 2345 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 46 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.

528 
WUUS51 KPHI 221831
SVRPHI
NJC005-021-025-029-221930-
/O.NEW.KPHI.SV.W.0186.110722T1831Z-110722T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
231 PM EDT FRI JUL 22 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 330 PM EDT

* AT 222 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BORDENTOWN...OR 8 MILES SOUTH OF TRENTON...AND MOVING EAST AT 15
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GEORGETOWN AROUND 240 PM EDT...
  WRIGHTSTOWN AROUND 250 PM EDT...
  CREAM RIDGE AROUND 305 PM EDT...
  WOODRUFF AROUND 325 PM EDT...
  6 MILES SOUTHWEST OF CASSVILLE AROUND 330 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.

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 3987 7437 4008 7480 4012 7476 4014 7473
      4016 7473 4024 7466 4019 7418
TIME...MOT...LOC 1831Z 288DEG 11KT 4010 7469

$$

PO

2 follow-up statements

241 
WWUS51 KPHI 221849
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
249 PM EDT FRI JUL 22 2011

NJC021-221900-
/O.CAN.KPHI.SV.W.0186.000000T0000Z-110722T1930Z/
MERCER NJ-
249 PM EDT FRI JUL 22 2011

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

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 3987 7437 4003 7469 4009 7465 4012 7463
      4013 7454 4010 7442 4006 7427
TIME...MOT...LOC 1850Z 180DEG 0KT 4011 7472

$$

NJC005-025-029-221930-
/O.CON.KPHI.SV.W.0186.000000T0000Z-110722T1930Z/
MONMOUTH NJ-OCEAN NJ-BURLINGTON NJ-
249 PM EDT FRI JUL 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTH CENTRAL BURLINGTON...WEST CENTRAL OCEAN AND EXTREME
SOUTHWESTERN MONMOUTH COUNTIES...

AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR GEORGETOWN...OR 8 MILES SOUTH OF TRENTON. THIS STORM WAS
NEARLY STATIONARY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND 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 3987 7437 4003 7469 4009 7465 4012 7463
      4013 7454 4010 7442 4006 7427
TIME...MOT...LOC 1850Z 180DEG 0KT 4011 7472

$$

PO

669 
WWUS51 KPHI 221909
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
309 PM EDT FRI JUL 22 2011

NJC025-221919-
/O.CAN.KPHI.SV.W.0186.000000T0000Z-110722T1930Z/
MONMOUTH NJ-
309 PM EDT FRI JUL 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN MONMOUTH
COUNTY IS CANCELLED...

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 4004 7456 4006 7453 4008 7448 4009 7443
      4003 7430 3987 7437 3998 7460
TIME...MOT...LOC 1909Z 180DEG 0KT 4011 7472

$$

NJC005-029-221930-
/O.CON.KPHI.SV.W.0186.000000T0000Z-110722T1930Z/
OCEAN NJ-BURLINGTON NJ-
309 PM EDT FRI JUL 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR CENTRAL BURLINGTON AND WEST CENTRAL OCEAN COUNTIES...

AT 305 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED 12 MILES NORTHWEST OF BROWNS MILLS...OR 8
MILES SOUTH OF TRENTON. THIS STORM WAS NEARLY STATIONARY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4004 7456 4006 7453 4008 7448 4009 7443
      4003 7430 3987 7437 3998 7460
TIME...MOT...LOC 1909Z 180DEG 0KT 4011 7472

$$

PO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 3:22 PM EDT	Special Weather Statement	PHI	Burlington	53 min
Jul 22, 3:33 PM EDT	Special Weather Statement	PHI	Ocean	57 min
Jul 22, 3:35 PM EDT	Special Marine Warning	PHI		55 min
Jul 22, 4:15 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.