Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 60, NWS Philadelphia/Mount Holly

June 4, 2021Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 4, 2021, 5:12 PM EDT for Ocean County, New Jersey. It was in force for 18 min. 3 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
Jun 4, 2021, 5:12 PM EDT (21:12 UTC)
Expired
Jun 4, 2021, 5:30 PM EDT
In force
18 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 31 km from the middle of the area, began a volume at 21:16 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
Jun 4, 5:12 PM EDTTSTM WND DMG2 Ssw Lacey Twp, NJDOWNED WIRES NEAR CANTERBURY DRIVE. TIME ESTIMATED FROM RADAR.
Jun 4, 5:15 PM EDTMARINE TSTM WIND 391 Ese Lanoka Harbor, NJ
Jun 4, 5:17 PM EDTHAIL 0.7Forked River, NJHAIL UP TO DIME SIZE.

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
Jun 4, 3:09 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.2 hours before the alert went out and 138 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 2021-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 233 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897Sfc1 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
233 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

793 
WUUS51 KPHI 042112
SVRPHI
NJC029-042130-
/O.NEW.KPHI.SV.W.0060.210604T2112Z-210604T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
512 PM EDT Fri Jun 4 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Ocean County in southern New Jersey...

* Until 530 PM EDT.

* At 512 PM EDT, severe thunderstorms were located along a line
  extending from Point Pleasant Beach to near Brookville, moving east
  at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  Toms River, Barnegat, Beachwood, Manasquan, Point Pleasant Beach,
  Seaside Heights, Mantoloking, Brick Township, Dover Beaches North,
  Brookville, Dover Beaches South, Point Pleasant, Brielle, South
  Toms River, Sea Girt, Island Heights, Bay Head, Gilford Park,
  Waretown and Ocean Acres.

This includes Garden State Parkway between mile markers 67 and 81.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4013 7397 3997 7397 3974 7409 3975 7434
      4012 7409 4009 7407 4012 7405 4010 7403
      4012 7404
TIME...MOT...LOC 2112Z 256DEG 40KT 4008 7406 3980 7426 

HAIL...1.00IN
WIND...60MPH
 
$$

JEO
1 follow-up statement
840 
WWUS51 KPHI 042127
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
527 PM EDT Fri Jun 4 2021

NJC029-042137-
/O.EXP.KPHI.SV.W.0060.000000T0000Z-210604T2130Z/
Ocean NJ-
527 PM EDT Fri Jun 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OCEAN COUNTY WILL
EXPIRE AT 530 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central and southern New Jersey.

LAT...LON 4013 7397 3997 7397 3974 7409 3975 7434
      4012 7409 4009 7407 4012 7405 4010 7403
      4012 7404
TIME...MOT...LOC 2127Z 256DEG 40KT 4008 7406 3980 7426 

$$

JEO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 8:14 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth, Ocean19 min
Jun 3, 8:44 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth30 min
Jun 3, 8:55 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth10 min
Jun 4, 1:07 PM EDTSpecial Weather StatementPHISussex38 min
Jun 4, 1:45 PM EDTAreal Flood AdvisoryPHIWarren97 min
Jun 4, 1:49 PM EDTSevere Thunderstorm WarningPHISussex, Warren41 min
Jun 4, 2:43 PM EDTSevere Thunderstorm WarningPHIHunterdon, Middlesex, Morris, Somerset, Sussex, Warren62 min
Jun 4, 2:49 PM EDTAreal Flood AdvisoryPHIHunterdon, Middlesex, Morris, Somerset, Sussex, Warren70 min
Jun 4, 3:16 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more98 min
Jun 4, 3:18 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer42 min
Jun 4, 3:23 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Somerset67 min
Jun 4, 3:46 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer44 min
Jun 4, 4:12 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean63 min
Jun 4, 4:20 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester40 min
Jun 4, 4:22 PM EDTSpecial Marine WarningPHI53 min
Jun 4, 4:23 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean52 min
Jun 4, 4:30 PM EDTAreal Flood AdvisoryPHIMiddlesex, Monmouth, Ocean63 min
Jun 4, 5:09 PM EDTSpecial Marine WarningPHI2 hr
Jun 4, 5:32 PM EDTSpecial Marine WarningPHI58 min
Jun 4, 6:18 PM EDTSpecial Weather StatementPHIAtlantic42 min
Jun 4, 6:27 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland48 min
Jun 4, 7:13 PM EDTSpecial Marine WarningPHI62 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm warning in 2021

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.