Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 66, NWS Philadelphia/Mount Holly

June 23, 2015Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 23, 2015, 7:58 PM EDT for Cape May County, Cumberland County, New Jersey. It was in force for 47 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
Jun 23, 2015, 7:58 PM EDT (23:58 UTC)
Expired
Jun 23, 2015, 8:45 PM EDT
In force
47 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 64 km from the middle of the area, began a volume at 00:02 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 23, 4:09 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 12.0 hours before the alert went out and 143 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, Wallops Is Stn, VA at 12:00Z on 2015-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 844 joules per kilogram.LCLLFCEL10008507005003002001001 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, Wallops Is Stn, VA at 12:00Z on 2015-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
844 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
1420 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

466 
WUUS51 KPHI 232358
SVRPHI
NJC009-011-240045-
/O.NEW.KPHI.SV.W.0066.150623T2358Z-150624T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
758 PM EDT TUE JUN 23 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 845 PM EDT

* AT 757 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED 7 MILES WEST OF GREEN CREEK...OR 11 MILES NORTHWEST OF
  CAPE MAY...AND MOVING SOUTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  OCEAN CITY...CAPE MAY...NORTH WILDWOOD...WILDWOOD CREST...
  WOODBINE...SEA ISLE CITY...AVALON...WEST CAPE MAY...STONE HARBOR...
  CAPE MAY COURT HOUSE...SCOTCH BONNET...MARMORA...NORTH CAPE MAY...
  RIO GRANDE...GOSHEN...DIAMOND BEACH...ELDORA...GREEN CREEK...
  BELLEPLAIN FOREST AND SEAVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

STORMS HAVE HAD A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.

&&

LAT...LON 3920 7466 3899 7479 3894 7486 3893 7497
      3896 7496 3897 7494 3897 7496 3916 7489
      3918 7491 3920 7503 3931 7497 3928 7462
      3926 7462 3928 7461 3928 7458
TIME...MOT...LOC 2357Z 294DEG 41KT 3907 7504 

$$
1 follow-up statement
447 
WWUS51 KPHI 240041
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
841 PM EDT TUE JUN 23 2015

NJC009-011-240050-
/O.EXP.KPHI.SV.W.0066.000000T0000Z-150624T0045Z/
CAPE MAY NJ-CUMBERLAND NJ-
841 PM EDT TUE JUN 23 2015

...THE SEVERE THUNDERSTORM WARNING FOR CAPE MAY AND SOUTHEASTERN
CUMBERLAND COUNTIES WILL EXPIRE AT 845 PM EDT...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING IS ABOUT TO
MOVE OUT OF THE COUNTIES. THEREFORE THE WARNING WILL BE ALLOWED TO 
EXPIRE.

LAT...LON 3920 7466 3899 7479 3894 7486 3893 7497
      3896 7496 3897 7494 3897 7496 3916 7489
      3918 7491 3920 7503 3931 7497 3928 7462
      3926 7462 3928 7461 3928 7458
TIME...MOT...LOC 0039Z 294DEG 41KT 3907 7504 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 9:10 AM EDTSpecial Weather StatementPHISussex35 min
Jun 23, 11:13 AM EDTSpecial Weather StatementPHIWarren32 min
Jun 23, 2:29 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex, Warren46 min
Jun 23, 5:38 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Cumberland, Gloucester, Salem52 min
Jun 23, 5:44 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Cumberland, Gloucester, Salem4 hr
Jun 23, 5:58 PM EDTTornado WarningPHIBurlington, Camden, Gloucester20 min
Jun 23, 6:02 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren43 min
Jun 23, 6:13 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more77 min
Jun 23, 6:14 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem4 hr
Jun 23, 6:18 PM EDTAreal Flood AdvisoryPHIMorris, Sussex, Warren4 hr
Jun 23, 6:24 PM EDTSpecial Marine WarningPHI2 hr
Jun 23, 6:41 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland, Ocean4 hr
Jun 23, 7:44 PM EDTSpecial Marine WarningPHI91 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2015Every severe thunderstorm warning in 2015

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; radar from the NEXRAD Level II archive.