Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 172, NWS Philadelphia/Mount Holly

August 5, 2012Middlesex County, Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 5, 2012, 7:38 PM EDT for Middlesex County, Monmouth County, Ocean County, New Jersey. It was in force for 67 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
Aug 5, 2012, 7:38 PM EDT (23:38 UTC)
Expired
Aug 5, 2012, 8:45 PM EDT
In force
67 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 23:38 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

TimeReportWhereRemark
Aug 5, 8:00 PM EDTTSTM WND DMGLong Branch, NJWIRES DOWN IN LONG BRANCH.
Aug 5, 8:05 PM EDTMARINE TSTM WIND 47Brick Twp, NJ

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.

IssuedProductOfficeLasted
Aug 5, 3:36 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.6 hours before the alert went out and 129 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, Brookhaven, NY at 12:00Z on 2012-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2201 joules per kilogram.LCLEL10008507005003002001001 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, Brookhaven, NY at 12:00Z on 2012-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
2201 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
477 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
3 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.

844 
WUUS51 KPHI 052338
SVRPHI
NJC023-025-029-060045-
/O.NEW.KPHI.SV.W.0172.120805T2338Z-120806T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
738 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF SANDY HOOK...
  EASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF PERTH AMBOY...
  NORTHERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL 845 PM EDT

* AT 734 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM PERTH AMBOY TO CEDAR GLEN LAKES...AND MOVING
  EAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WHITING...MARLBORO...JACKSONS MILLS AND CEDAR GLEN LAKES AROUND 745
  PM EDT...
  JACKSON...HOLMDEL...ADELPHIA AND LAKEHURST AROUND 750 PM EDT...
  FREEWOOD ACRES AND BAMBER LAKE AROUND 755 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 3987 7407 3986 7408 3986 7410 3992 7410
      3986 7413 3985 7443 4003 7452 4056 7431
      4057 7422 4057 7421 4054 7424 4047 7425
      4045 7420 4046 7412 4042 7401 4048 7402
      4048 7400 4044 7397 4029 7397
TIME...MOT...LOC 2338Z 266DEG 20KT 4048 7422 3993 7445

$$

IOVINO
1 follow-up statement
464 
WWUS51 KPHI 060012
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
812 PM EDT SUN AUG 5 2012

NJC023-060021-
/O.CAN.KPHI.SV.W.0172.000000T0000Z-120806T0045Z/
MIDDLESEX NJ-
812 PM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MIDDLESEX COUNTY IS
CANCELLED...

THE SEVERE THUNDERSTORMS HAVE MOVED TO THE EAST OF MIDDLESEX COUNTY.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3987 7407 3986 7408 3986 7410 3992 7410
      3986 7413 3985 7443 4046 7412 4042 7401
      4048 7402 4048 7400 4044 7397 4029 7397
TIME...MOT...LOC 0011Z 266DEG 20KT 4049 7398 3994 7421

$$

NJC025-029-060045-
/O.CON.KPHI.SV.W.0172.000000T0000Z-120806T0045Z/
MONMOUTH NJ-OCEAN NJ-
812 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHERN OCEAN AND EASTERN MONMOUTH COUNTIES...

AT 808 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED 
ALONG A LINE EXTENDING FROM SANDY HOOK TO TOMS RIVER...MOVING EAST 
AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WEST LONG BRANCH...WEST BELMAR...WANAMASSA AND SILVERTON BY 820 PM
  EDT...
  BRIELLE...ELBERON...SPRING LAKE HEIGHTS AND SPRING LAKE BY 825 PM
  EDT...
  SEASIDE PARK AND SEASIDE HEIGHTS BY 830 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 3987 7407 3986 7408 3986 7410 3992 7410
      3986 7413 3985 7443 4046 7412 4042 7401
      4048 7402 4048 7400 4044 7397 4029 7397
TIME...MOT...LOC 0011Z 266DEG 20KT 4049 7398 3994 7421

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 3:49 AM EDTFlash Flood WatchPHIHunterdon, Middlesex, Morris, Somerset, Sussex, Warren16 hr
Aug 5, 1:00 PM EDTSpecial Weather StatementPHIWarren30 min
Aug 5, 1:20 PM EDTSpecial Weather StatementPHISussex85 min
Aug 5, 5:13 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex, Warren77 min
Aug 5, 5:22 PM EDTSevere Thunderstorm WarningPHIGloucester, Hunterdon, Salem, Warren68 min
Aug 5, 5:38 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem82 min
Aug 5, 5:52 PM EDTSpecial Marine WarningPHI83 min
Aug 5, 6:16 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more74 min
Aug 5, 6:21 PM EDTSevere Thunderstorm WarningPHICumberland, Salem39 min
Aug 5, 7:09 PM EDTSpecial Weather StatementPHIAtlantic, Cumberland66 min
Aug 5, 7:30 PM EDTSpecial Weather StatementPHIAtlantic, Cumberland, Monmouth, Ocean60 min
Aug 5, 7:40 PM EDTSpecial Marine WarningPHI95 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012Every severe thunderstorm warning in 2012

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.