Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 211, NWS Philadelphia/Mount Holly

July 29, 2011Burlington County, Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2011, 7:27 PM EDT for Burlington County, Monmouth County, Ocean County, New Jersey. It was in force for 63 min. 6 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 29, 2011, 7:27 PM EDT (23:27 UTC)
Expired: Jul 29, 2011, 8:30 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 11 km from the middle of the area, began a volume at 23:29 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 29, 7:32 PM EDT	TSTM WND DMG	Marlton, NJ
Jul 29, 7:32 PM EDT	TSTM WND DMG	Mount Laurel, NJ
Jul 29, 7:40 PM EDT	TSTM WND DMG	Southampton Twp, NJ	60 MPH WIND AND DOWNED TREES.
Jul 29, 7:42 PM EDT	TSTM WND GST 54	Mcguire Afb, NJ	A THUNDERSTORM WIND GUST TO 54 MPH WAS MEASURED AT THE MCGUIRE AFB.
Jul 29, 7:50 PM EDT	MARINE TSTM WIND 48	Barnegat, NJ
Jul 29, 7:55 PM EDT	TSTM WND DMG	Southampton Twp, NJ	60 MPH WIND AND DOWNED TREES

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 29, 2:40 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 174 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: 81 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 19 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.

280 
WUUS51 KPHI 292327
SVRPHI
NJC005-025-029-300030-
/O.NEW.KPHI.SV.W.0211.110729T2327Z-110730T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
727 PM EDT FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL 830 PM EDT

* AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM LONG BRANCH TO MEDFORD...OR
  ALONG A LINE EXTENDING FROM 9 MILES SOUTH OF SANDY HOOK TO 13 MILES
  EAST OF CAMDEN...AND MOVING SOUTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  JACKSON...LEISURETOWNE AND ASBURY PARK AROUND 735 PM EDT...
  TABERNACLE...PRESIDENTIAL LAKES...LAKEWOOD AND LAKEHURST AROUND 740
  PM EDT...
  WHITING...SHAMONG AND ATSION AROUND 745 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY EVENING
FOR NORTHWEST NEW JERSEY AND NORTHEAST PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY
EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 3981 7407 3968 7412 3951 7426 3950 7432
      3974 7477 3978 7481 3982 7492 3987 7493
      3992 7499 4041 7403 4039 7396
TIME...MOT...LOC 2326Z 300DEG 30KT 4031 7402 3989 7485

$$

SZATKOWSKI

1 follow-up statement

176 
WWUS51 KPHI 300001
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
801 PM EDT FRI JUL 29 2011

NJC025-300010-
/O.CAN.KPHI.SV.W.0211.000000T0000Z-110730T0030Z/
MONMOUTH NJ-
801 PM EDT FRI JUL 29 2011

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY EVENING 
FOR NORTHWEST NEW JERSEY AND NORTHEAST PENNSYLVANIA. A SEVERE 
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY 
EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 3962 7455 3984 7483 4011 7430 4004 7403
      3981 7407 3968 7412 3951 7426 3950 7432
TIME...MOT...LOC 0000Z 300DEG 30KT 4000 7403 3981 7412
          3975 7461

$$

NJC005-029-300030-
/O.CON.KPHI.SV.W.0211.000000T0000Z-110730T0030Z/
OCEAN NJ-BURLINGTON NJ-
801 PM EDT FRI JUL 29 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHERN BURLINGTON AND OCEAN COUNTIES...

AT 759 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM LAVALLETTE TO FORKED RIVER
TO WHARTON STATE FOREST...OR ALONG A LINE EXTENDING FROM 8 MILES
NORTHEAST OF TOMS RIVER TO 10 MILES SOUTH OF TOMS RIVER TO 27 MILES
SOUTHWEST OF TOMS RIVER...MOVING SOUTHEAST AT 35 MPH.

DAMAGING WINDS IN EXCESS OF 60 MPH HAVE BEEN REPORTED WITH NUMEROUS 
TREES AND WIRES DOWN ACROSS THE AREA.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WARREN GROVE AND PENN STATE FOREST BY 805 PM EDT...
  OCEAN ACRES...BARNEGAT LIGHT AND BARNEGAT BY 810 PM EDT...
  WADING RIVER BY 815 PM EDT...
  MANAHAWKIN AND HARVEY CEDARS BY 820 PM EDT...
  NEW GRETNA AND BASS RIVER STATE FOREST BY 825 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY EVENING
FOR NORTHWEST NEW JERSEY AND NORTHEAST PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY
EVENING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 3962 7455 3984 7483 4011 7430 4004 7403
      3981 7407 3968 7412 3951 7426 3950 7432
TIME...MOT...LOC 0000Z 300DEG 30KT 4000 7403 3981 7412
          3975 7461

$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 2:42 AM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Cumberland, Middlesex, Monmouth and 1 more	63 min
Jul 29, 3:45 AM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Cumberland, Ocean	60 min
Jul 29, 5:12 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	108 min
Jul 29, 5:59 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	61 min
Jul 29, 6:17 PM EDT	Special Weather Statement	PHI	Monmouth	58 min
Jul 29, 6:23 PM EDT	Special Marine Warning	PHI		97 min
Jul 29, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	66 min
Jul 29, 6:25 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	20 min
Jul 29, 7:03 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	46 min
Jul 29, 7:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	42 min
Jul 29, 7:40 PM EDT	Special Marine Warning	PHI		95 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.