Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 121, NWS Philadelphia/Mount Holly

July 6, 2020Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2020, 3:36 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 54 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
Jul 6, 2020, 3:36 PM EDT (19:36 UTC)
Expired
Jul 6, 2020, 4:30 PM EDT
In force
54 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 19:38 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
Jul 6, 3:44 PM EDTHAIL 0.54 W Wading River, NJ
Jul 6, 3:53 PM EDTMARINE TSTM WIND 454 Se Mystic Island, NJWEATHERFLOW GAUGE XTUK.
Jul 6, 4:06 PM EDTMARINE TSTM WIND 524 Se Mystic Island, NJCORRECTS PREVIOUS MARINE TSTM WIND REPORT FROM 4 SE MYSTIC ISLAND TO REFLECT NEW HIGHER WIND GUST. WEATHERFLOW GAUGE XTUK.

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
Jul 6, 1:38 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.6 hours before the alert went out and 186 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 2020-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 100 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 2020-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
100 J/kg
Mixed-layer CIN
-192 J/kg
Mixed-layer LCL
1959 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

878 
WUUS51 KPHI 061936
SVRPHI
NJC001-005-029-062030-
/O.NEW.KPHI.SV.W.0121.200706T1936Z-200706T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
336 PM EDT Mon Jul 6 2020

The National Weather Service in Mount Holly NJ has issued a

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

* Until 430 PM EDT.

* At 336 PM EDT, severe thunderstorms were located along a line
  extending from near Barnegat to near Bass River State Forest to
  near Egg Harbor City to near Elwood-Magnolia, moving southeast at
  20 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...
  Atlantic City, Barnegat, Pleasantville, Ventnor City, Brigantine,
  Absecon, Egg Harbor City, Tuckerton, Surf City, Port Republic,
  Pomona, Elwood-Magnolia, Wading River, Brookville, Warren Grove,
  Bass River State Forest, New Gretna, Beach Haven West, Mystic
  Island and Ocean Acres.

This includes the following highways...
 Garden State Parkway between mile markers 36 and 73.
 Atlantic City Expressway between mile markers 0 and 24.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3982 7405 3957 7420 3944 7431 3932 7443
      3956 7484 3968 7450 3984 7435
TIME...MOT...LOC 1936Z 296DEG 19KT 3978 7425 3963 7437 3957 7455 3954
7472

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

Gorse
1 follow-up statement
902 
WWUS51 KPHI 061959
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
359 PM EDT Mon Jul 6 2020

NJC001-005-029-062030-
/O.CON.KPHI.SV.W.0121.000000T0000Z-200706T2030Z/
Atlantic NJ-Ocean NJ-Burlington NJ-
359 PM EDT Mon Jul 6 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR SOUTHEASTERN ATLANTIC...SOUTHEASTERN OCEAN AND SOUTHEASTERN
BURLINGTON COUNTIES...

At 359 PM EDT, severe thunderstorms were located along a line
extending from 7 miles east of Barnegat to 6 miles southeast of
Tuckerton to near Port Republic to near Pomona, moving southeast at
25 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...
Atlantic City, Barnegat, Pleasantville, Brigantine, Absecon,
Tuckerton, Surf City, Port Republic, Pomona, Bass River State Forest,
New Gretna, Beach Haven West, Mystic Island, Ocean Acres, Manahawkin
and Waretown.

This includes the following highways...
 Garden State Parkway between mile markers 40 and 72.
 Atlantic City Expressway between mile markers 0 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3982 7405 3957 7420 3944 7431 3932 7443
      3952 7460 3983 7422
TIME...MOT...LOC 1959Z 308DEG 22KT 3978 7409 3954 7424 3948 7442 3945
7459

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

Gorse

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:16 AM EDTHeat AdvisoryPHIBurlington, Camden, Gloucester, Mercer12 hr
Jul 6, 12:45 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden60 min
Jul 6, 12:52 PM EDTFlash Flood WatchPHIBurlington, Camden, Gloucester, Mercer, Salem8 hr
Jul 6, 12:57 PM EDTAreal Flood AdvisoryPHIBurlington, Camden2 hr
Jul 6, 1:08 PM EDTFlash Flood WarningPHIBurlington, Camden4 hr
Jul 6, 1:15 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth60 min
Jul 6, 1:43 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden62 min
Jul 6, 1:52 PM EDTSpecial Weather StatementPHIOcean23 min
Jul 6, 2:00 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean75 min
Jul 6, 2:02 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Mercer, Middlesex, Monmouth, Ocean118 min
Jul 6, 2:39 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester, Ocean66 min
Jul 6, 2:41 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer49 min
Jul 6, 2:46 PM EDTSpecial Marine WarningPHI89 min
Jul 6, 2:48 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Gloucester, Ocean4 hr
Jul 6, 2:51 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth39 min
Jul 6, 2:57 PM EDTFlash Flood Warning EmergencyCatastrophic damage threatPHIBurlington, Camden, Gloucester4 hr
Jul 6, 3:00 PM EDTSevere Thunderstorm WarningPHIHunterdon, Warren45 min
Jul 6, 3:14 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean46 min
Jul 6, 3:18 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Somerset42 min
Jul 6, 3:34 PM EDTAreal Flood AdvisoryPHIMiddlesex, Monmouth, Somerset116 min
Jul 6, 3:36 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset39 min
Jul 6, 3:38 PM EDTSevere Thunderstorm WarningPHIHunterdon, Warren52 min
Jul 6, 3:44 PM EDTSpecial Marine WarningPHI61 min
Jul 6, 3:44 PM EDTSpecial Marine WarningPHI61 min
Jul 6, 3:47 PM EDTFlash Flood WarningPHIMiddlesex, Morris, Somerset4 hr
Jul 6, 3:47 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden, Cumberland, Gloucester, Salem58 min
Jul 6, 4:41 PM EDTSpecial Marine WarningPHI64 min
Jul 6, 4:45 PM EDTSpecial Marine WarningPHI41 min
Jul 6, 4:45 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland, Salem60 min
Jul 6, 4:58 PM EDTSpecial Marine WarningPHI62 min
Jul 6, 5:24 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more4 hr
Jul 6, 5:39 PM EDTSpecial Marine WarningPHI66 min
Jul 6, 5:43 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland47 min
Jul 6, 5:57 PM EDTSpecial Marine WarningPHI63 min
Jul 6, 6:00 PM EDTSevere Thunderstorm WarningPHISalem60 min
Jul 6, 6:43 PM EDTSpecial Marine WarningPHI44 min
Jul 6, 6:56 PM EDTSpecial Marine WarningPHI47 min
Jul 6, 7:18 PM EDTSevere Thunderstorm WarningPHISussex, Warren36 min
Jul 6, 7:55 PM EDTSpecial Weather StatementPHISussex50 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.