Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 193, NWS Philadelphia/Mount Holly

July 24, 2011Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2011, 3:59 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 61 min. 1 report 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 24, 2011, 3:59 PM EDT (19:59 UTC)
Expired: Jul 24, 2011, 5:00 PM EDT
In force: 61 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 37 km from the middle of the area, began a volume at 20:01 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 24, 4:15 PM EDT	TSTM WND DMG	Washington, NJ	NUMEROUS TREES DOWN

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.0 hours before the alert went out and 186 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: 994 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

634 
WUUS51 KPHI 241959
SVRPHI
NJC001-005-029-242100-
/O.NEW.KPHI.SV.W.0193.110724T1959Z-110724T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
359 PM EDT SUN JUL 24 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 500 PM EDT

* AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR WHARTON STATE FOREST...OR
  25 MILES SOUTHWEST OF TOMS RIVER...AND MOVING SOUTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHATSWORTH AROUND 405 PM EDT...
  9 MILES NORTHEAST OF BATSTO AROUND 410 PM EDT...
  PENN STATE FOREST AROUND 425 PM EDT...
  6 MILES SOUTHWEST OF WARREN GROVE AND 6 MILES NORTHEAST OF WADING
  RIVER AROUND 440 PM EDT...
  BASS RIVER STATE FOREST AND NEW GRETNA AROUND 450 PM EDT...
  TUCKERTON AND 7 MILES WEST OF BEACH HAVEN WEST AROUND 500 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 3970 7414 3969 7417 3965 7416 3963 7424
      3961 7425 3960 7422 3959 7423 3960 7425
      3959 7430 3956 7431 3956 7426 3950 7432
      3953 7434 3953 7440 3951 7442 3960 7465
      3971 7476 3991 7460
TIME...MOT...LOC 2000Z 307DEG 13KT 3977 7459

$$

HAYES

3 follow-up statements

999 
WWUS51 KPHI 242023
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
423 PM EDT SUN JUL 24 2011

NJC001-005-029-242100-
/O.CON.KPHI.SV.W.0193.000000T0000Z-110724T2100Z/
OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
423 PM EDT SUN JUL 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHEASTERN BURLINGTON...NORTHEASTERN ATLANTIC AND SOUTHERN
OCEAN COUNTIES...

AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR PENN STATE FOREST...OR
25 MILES NORTH OF ATLANTIC CITY...MOVING SOUTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WADING RIVER AND 7 MILES SOUTHWEST OF WARREN GROVE BY 440 PM EDT...
  BASS RIVER STATE FOREST AND NEW GRETNA BY 455 PM EDT...
  TUCKERTON...MYSTIC ISLAND...9 MILES SOUTHWEST OF MANAHAWKIN AND 9
  MILES SOUTHWEST OF BEACH HAVEN WEST BY 500 PM EDT...

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 3970 7414 3969 7417 3965 7416 3963 7424
      3961 7425 3960 7422 3959 7423 3960 7425
      3959 7430 3956 7431 3956 7426 3950 7432
      3953 7434 3953 7440 3951 7442 3960 7465
      3971 7476 3991 7460
TIME...MOT...LOC 2023Z 307DEG 13KT 3970 7452

$$

HAYES

417 
WWUS51 KPHI 242037
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 PM EDT SUN JUL 24 2011

NJC001-005-029-242100-
/O.CON.KPHI.SV.W.0193.000000T0000Z-110724T2100Z/
OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
437 PM EDT SUN JUL 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHEASTERN BURLINGTON...EAST CENTRAL ATLANTIC AND SOUTHERN
OCEAN COUNTIES...

AT 436 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR BASS RIVER STATE FOREST...OR 22 MILES NORTH OF ATLANTIC CITY...
MOVING SOUTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BASS RIVER STATE FOREST AND NEW GRETNA BY 455 PM EDT...
  TUCKERTON...MYSTIC ISLAND...9 MILES SOUTHWEST OF MANAHAWKIN AND 9
  MILES SOUTHWEST OF BEACH HAVEN WEST BY 500 PM EDT...

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 3957 7455 3957 7457 3981 7439 3970 7414
      3969 7417 3965 7416 3963 7424 3961 7425
      3960 7422 3959 7423 3960 7425 3959 7430
      3956 7431 3956 7426 3950 7432 3953 7434
      3953 7440 3951 7442
TIME...MOT...LOC 2037Z 307DEG 13KT 3967 7447

$$

HAYES

933 
WWUS51 KPHI 242057
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
457 PM EDT SUN JUL 24 2011

NJC001-005-029-242106-
/O.EXP.KPHI.SV.W.0193.000000T0000Z-110724T2100Z/
OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
457 PM EDT SUN JUL 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BURLINGTON...EAST
CENTRAL ATLANTIC AND SOUTHERN OCEAN COUNTIES WILL EXPIRE AT 500 PM
EDT...

THE STRONGEST PART OF THE STORM THAT PROMPTED THE WARNING HAS 
WEAKENED AND WILL MOVE SOUTH OF THE AREA.

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 3957 7455 3957 7457 3981 7439 3970 7414
      3969 7417 3965 7416 3963 7424 3961 7425
      3960 7422 3959 7423 3960 7425 3959 7430
      3956 7431 3956 7426 3950 7432 3953 7434
      3953 7440 3951 7442
TIME...MOT...LOC 2056Z 307DEG 13KT 3963 7440

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 3:48 AM EDT	Heat Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean and 1 more	16 hr
Jul 24, 1:37 PM EDT	Special Marine Warning	PHI		53 min
Jul 24, 1:40 PM EDT	Special Weather Statement	PHI	Cape May	65 min
Jul 24, 1:49 PM EDT	Special Marine Warning	PHI		56 min
Jul 24, 2:02 PM EDT	Special Weather Statement	PHI	Cape May	58 min
Jul 24, 2:12 PM EDT	Special Marine Warning	PHI		63 min
Jul 24, 2:41 PM EDT	Special Weather Statement	PHI	Cape May	64 min
Jul 24, 3:01 PM EDT	Special Weather Statement	PHI	Morris	59 min
Jul 24, 3:12 PM EDT	Special Marine Warning	PHI		63 min
Jul 24, 3:14 PM EDT	Special Marine Warning	PHI		61 min
Jul 24, 3:17 PM EDT	Special Marine Warning	PHI		58 min
Jul 24, 3:17 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester	58 min
Jul 24, 3:30 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Ocean	60 min
Jul 24, 3:36 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	54 min
Jul 24, 4:13 PM EDT	Special Weather Statement	PHI	Atlantic, Gloucester, Salem	62 min
Jul 24, 4:14 PM EDT	Special Weather Statement	PHI	Cape May	61 min
Jul 24, 4:32 PM EDT	Special Weather Statement	PHI	Morris, Sussex	58 min
Jul 24, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic	64 min
Jul 24, 4:50 PM EDT	Special Marine Warning	PHI		85 min
Jul 24, 4:59 PM EDT	Special Marine Warning	PHI		61 min
Jul 24, 5:07 PM EDT	Special Weather Statement	PHI	Ocean	53 min
Jul 24, 5:08 PM EDT	Special Weather Statement	PHI	Atlantic	67 min
Jul 24, 5:10 PM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester, Salem	65 min
Jul 24, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	53 min
Jul 24, 5:27 PM EDT	Special Weather Statement	PHI	Mercer	63 min
Jul 24, 5:35 PM EDT	Special Weather Statement	PHI	Mercer	55 min
Jul 24, 5:56 PM EDT	Special Weather Statement	PHI	Warren	64 min
Jul 24, 6:02 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May	3 hr
Jul 24, 6:19 PM EDT	Special Weather Statement	PHI	Cape May, Cumberland	56 min
Jul 24, 7:28 PM EDT	Special Weather Statement	PHI	Burlington, Camden	62 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.