Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 194, NWS Philadelphia/Mount Holly

August 2, 20207 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2020, 11:49 PM EDT for 7 counties in New Jersey. It was in force for 41 min. 1 report 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 2, 2020, 11:49 PM EDT (03:49 UTC)
Expired
Aug 3, 2020, 12:30 AM EDT
In force
41 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 03:52 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 2, 11:58 PM EDTTSTM WND DMG2 W Folsom, NJPOWER LINES DOWN NEAR COLLINGS LAKE. TIME ESTIMATED FROM RADAR AND UTILITY COMPANY REPORTS.

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

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.8 hours before the alert went out and 178 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 00:00Z on 2020-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2441 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 00:00Z on 2020-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.193958Sfc1 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
2441 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1213 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

974 
WUUS51 KPHI 030349
SVRPHI
NJC001-005-007-011-015-029-033-030430-
/O.NEW.KPHI.SV.W.0194.200803T0349Z-200803T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1149 PM EDT Sun Aug 2 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northern Atlantic County in southern New Jersey...
  Central Cumberland County in southern New Jersey...
  East central Salem County in southern New Jersey...
  South central Ocean County in southern New Jersey...
  Southeastern Camden County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Southeastern Burlington County in southern New Jersey...

* Until 1230 AM EDT.

* At 1149 PM EDT, a severe thunderstorm was located over Buena, or 7
  miles north of Vineland, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Vineland, Millville, Bridgeton, Cumberland, Hammonton, Buena, Egg
  Harbor City, Laurel Lake, Tuckerton, Weymouth, Estell Manor,
  Newfield, Port Republic, Shiloh, Elwood-Magnolia, Atsion, Wading
  River, Dorothy, Victory Lakes and Wharton State Forest.

This includes the following highways...
 Garden State Parkway between mile markers 45 and 57.
 Atlantic City Expressway between mile markers 14 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

&&

LAT...LON 3927 7515 3946 7532 3981 7462 3960 7431
TIME...MOT...LOC 0349Z 243DEG 45KT 3956 7495 

HAIL...<.75IN
WIND...60MPH
 
$$

JEO
2 follow-up statements
204 
WWUS51 KPHI 030406
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1206 AM EDT Mon Aug 3 2020

NJC001-005-007-011-015-029-033-030430-
/O.CON.KPHI.SV.W.0194.000000T0000Z-200803T0430Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Ocean NJ-Camden NJ-Gloucester NJ-
Burlington NJ-
1206 AM EDT Mon Aug 3 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHERN ATLANTIC...NORTHEASTERN CUMBERLAND...EAST CENTRAL
SALEM...SOUTH CENTRAL OCEAN...SOUTHEASTERN CAMDEN...SOUTHEASTERN
GLOUCESTER AND SOUTHEASTERN BURLINGTON COUNTIES...

At 1206 AM EDT, a severe thunderstorm was located near Batsto, or 20
miles northeast of Vineland, moving northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Vineland, Millville, Cumberland, Hammonton, Buena, Egg Harbor City,
Laurel Lake, Tuckerton, Weymouth, Estell Manor, Newfield, Port
Republic, Elwood-Magnolia, Atsion, Wading River, Victory Lakes,
Wharton State Forest, Mays Landing, Malaga and Bass River State
Forest.

This includes the following highways...
 Garden State Parkway between mile markers 47 and 57.
 Atlantic City Expressway between mile markers 14 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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

&&

LAT...LON 3932 7506 3951 7522 3981 7462 3960 7431
TIME...MOT...LOC 0406Z 243DEG 45KT 3966 7470 

HAIL...<.75IN
WIND...60MPH
 
$$

JEO
454 
WWUS51 KPHI 030424
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1224 AM EDT Mon Aug 3 2020

NJC001-005-007-011-015-029-033-030434-
/O.EXP.KPHI.SV.W.0194.000000T0000Z-200803T0430Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Ocean NJ-Camden NJ-Gloucester NJ-
Burlington NJ-
1224 AM EDT Mon Aug 3 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ATLANTIC...
NORTHEASTERN CUMBERLAND...EAST CENTRAL SALEM...SOUTH CENTRAL OCEAN...
SOUTHEASTERN CAMDEN...SOUTHEASTERN GLOUCESTER AND SOUTHEASTERN
BURLINGTON COUNTIES WILL EXPIRE AT 1230 AM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 3932 7506 3951 7522 3981 7462 3960 7431
TIME...MOT...LOC 0424Z 243DEG 45KT 3976 7444 

$$

JEO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 8:09 PM EDTSpecial Marine WarningPHI36 min
Aug 2, 8:53 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean51 hr
Aug 2, 8:53 PM EDTHigh Surf AdvisoryPHIAtlantic, Cape May, Monmouth, Ocean51 hr
Aug 2, 9:01 PM EDTSpecial Weather StatementPHIAtlantic44 min
Aug 2, 10:18 PM EDTSpecial Weather StatementPHIWarren42 min
Aug 2, 11:42 PM EDTSpecial Weather StatementPHICumberland33 min
Aug 3, 5:08 AM EDTTropical Storm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more39 hr
Aug 3, 4:26 PM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more38 hr
Aug 3, 6:03 PM EDTSpecial Marine WarningPHI12 min
Aug 3, 6:05 PM EDTSevere Thunderstorm WarningPHICumberland22 min
Aug 3, 6:19 PM EDTSpecial Weather StatementPHISalem26 min
Aug 3, 6:32 PM EDTSpecial Weather StatementPHICamden, Cumberland, Gloucester, Salem28 min
Aug 3, 6:48 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester27 min
Aug 3, 6:59 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester31 min
Aug 3, 7:02 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem28 min
Aug 3, 7:12 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Monmouth, Ocean48 min
Aug 3, 7:20 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer, Monmouth40 min
Aug 3, 7:43 PM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean62 min
Aug 3, 7:52 PM EDTSpecial Marine WarningPHI73 min
Aug 3, 7:56 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean, Somerset52 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020

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.