Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 272, NWS Philadelphia/Mount Holly

August 27, 2021Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 27, 2021, 2:37 PM EDT for Ocean County, New Jersey. It was in force for 38 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
Aug 27, 2021, 2:37 PM EDT (18:37 UTC)
Expired
Aug 27, 2021, 3:15 PM EDT
In force
38 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 30 km from the middle of the area, began a volume at 18:39 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.6 hours before the alert went out and 163 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 2021-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 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, Brookhaven, NY at 12:00Z on 2021-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1159 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1043 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

544 
WUUS51 KPHI 271837
SVRPHI
NJC029-271915-
/O.NEW.KPHI.SV.W.0272.210827T1837Z-210827T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
237 PM EDT Fri Aug 27 2021

The National Weather Service in Mount Holly NJ has issued a

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

* Until 315 PM EDT.

* At 235 PM EDT, a severe thunderstorm was located over Beach Haven
  West, or 21 miles south of Toms River, moving northeast at 5 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Barnegat, Beachwood, Surf City, Brookville, Warren Grove, Beach
  Haven West, South Toms River, Manahawkin, Holiday Heights, Ocean
  Acres and Waretown.

This includes Garden State Parkway between mile markers 60 and 80.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3990 7397 3977 7397 3967 7404 3957 7421
      3969 7439 3974 7439 3995 7425
TIME...MOT...LOC 1835Z 226DEG 6KT 3970 7428 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BAH
2 follow-up statements
043 
WWUS51 KPHI 271856 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
256 PM EDT Fri Aug 27 2021

NJC029-271915-
/O.CON.KPHI.SV.W.0272.000000T0000Z-210827T1915Z/
Ocean NJ-
256 PM EDT Fri Aug 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR EAST CENTRAL OCEAN COUNTY...

At 256 PM EDT, a severe thunderstorm was located near Beachwood, or 7
miles south of Toms River, and is nearly stationary.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Beachwood, Holiday City South, South Toms River, Holiday Heights and
Waretown.

This includes Garden State Parkway between mile markers 69 and 80.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3980 7407 3977 7424 3984 7433 3986 7432
      3995 7425 3992 7405
TIME...MOT...LOC 1856Z 246DEG 4KT 3989 7424 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BAH
599 
WWUS51 KPHI 271911
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
311 PM EDT Fri Aug 27 2021

NJC029-271920-
/O.EXP.KPHI.SV.W.0272.000000T0000Z-210827T1915Z/
Ocean NJ-
311 PM EDT Fri Aug 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OCEAN COUNTY WILL
EXPIRE AT 315 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty 
winds and heavy rain are still possible with this thunderstorm and 
therefore severe thunderstorm warning 275 is in effect.

LAT...LON 3980 7407 3977 7424 3984 7433 3986 7432
      3995 7425 3992 7405
TIME...MOT...LOC 1910Z 226DEG 6KT 3990 7422 

$$

BAH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 1:33 PM EDTAreal Flood AdvisoryPHIBurlington, Camden83 min
Aug 27, 2:18 PM EDTSmall Craft AdvisoryPHI44 hr
Aug 27, 2:28 PM EDTSpecial Weather StatementPHIAtlantic47 min
Aug 27, 2:33 PM EDTAreal Flood AdvisoryPHIWarren109 min
Aug 27, 2:38 PM EDTSevere Thunderstorm WarningPHIWarren35 min
Aug 27, 2:59 PM EDTSevere Thunderstorm WarningPHIOcean46 min
Aug 27, 3:07 PM EDTSevere Thunderstorm WarningPHIWarren24 min
Aug 27, 3:16 PM EDTSpecial Weather StatementPHIBurlington44 min
Aug 27, 3:30 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean45 min
Aug 27, 3:38 PM EDTSpecial Weather StatementPHICamden52 min
Aug 27, 3:45 PM EDTSpecial Weather StatementPHIOcean30 min
Aug 27, 3:54 PM EDTSpecial Weather StatementPHIAtlantic51 min
Aug 27, 3:59 PM EDTSpecial Weather StatementPHIOcean46 min
Aug 27, 4:06 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester39 min
Aug 27, 4:37 PM EDTAreal Flood AdvisoryPHIGloucester106 min
Aug 27, 4:46 PM EDTSpecial Marine WarningPHI43 min
Aug 27, 4:56 PM EDTSpecial Weather StatementPHIAtlantic34 min
Aug 27, 5:02 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland29 min
Aug 27, 5:09 PM EDTAreal Flood AdvisoryPHIAtlantic, Cape May, Cumberland2 hr
Aug 27, 5:21 PM EDTSpecial Weather StatementPHIMiddlesex39 min
Aug 27, 5:29 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset3 hr
Aug 27, 5:44 PM EDTFlash Flood WarningPHIMiddlesex4 hr
Aug 27, 6:52 PM EDTAreal Flood AdvisoryPHISalem98 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.