Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 62, NWS Philadelphia/Mount Holly

June 8, 2021Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 8, 2021, 4:12 PM EDT for Monmouth County, New Jersey. It was in force for 48 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 8, 2021, 4:12 PM EDT (20:12 UTC)
Expired
Jun 8, 2021, 5:00 PM EDT
In force
48 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 20:14 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, 8.2 hours before the alert went out and 122 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 2021-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 740 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 2021-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
740 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

764 
WUUS51 KPHI 082012
SVRPHI
NJC025-082100-
/O.NEW.KPHI.SV.W.0062.210608T2012Z-210608T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
412 PM EDT Tue Jun 8 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Eastern Monmouth County in central New Jersey...

* Until 500 PM EDT.

* At 411 PM EDT, severe thunderstorms were located along a line
  extending from Navesink to Allenwood, moving east at 10 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...
  Long Branch, Asbury Park, Sandy Hook, Middletown, Tinton Falls, Red
  Bank, Manasquan, Highlands, Point Pleasant Beach, Allenwood,
  Elberon, Ramtown, Navesink, Collingwood Park, Lincroft, Point
  Pleasant, Eatontown, West Long Branch, Rumson and Little Silver.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 32 and 34.
 Garden State Parkway between mile markers 95 and 112.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4036 7396 4007 7401 4008 7404 4010 7404
      4009 7407 4010 7410 4014 7411 4011 7414
      4012 7417 4045 7412 4041 7399 4048 7402
      4044 7397
TIME...MOT...LOC 2011Z 265DEG 10KT 4041 7405 4016 7410 

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

Staarmann
2 follow-up statements
989 
WWUS51 KPHI 082032
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
432 PM EDT Tue Jun 8 2021

NJC025-082100-
/O.CON.KPHI.SV.W.0062.000000T0000Z-210608T2100Z/
Monmouth NJ-
432 PM EDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN MONMOUTH COUNTY...

At 432 PM EDT, severe thunderstorms were located along a line
extending from Highlands to near Manasquan, moving east at 10 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...
Long Branch, Asbury Park, Sandy Hook, Highlands, Elberon, Navesink,
Allenwood, Eatontown, West Long Branch, Rumson, Little Silver,
Oceanport, Neptune City, Spring Lake Heights, Bradley Beach,
Shrewsbury, Spring Lake, Avon-By-the-sea, Sea Girt and Interlaken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4036 7396 4012 7400 4015 7410 4036 7404
      4041 7404 4041 7398 4044 7399 4048 7402
      4044 7398
TIME...MOT...LOC 2032Z 265DEG 10KT 4041 7399 4016 7404 

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

Staarmann
642 
WWUS51 KPHI 082051
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
451 PM EDT Tue Jun 8 2021

NJC025-082100-
/O.CON.KPHI.SV.W.0062.000000T0000Z-210608T2100Z/
Monmouth NJ-
451 PM EDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EAST CENTRAL MONMOUTH COUNTY...

At 450 PM EDT, severe thunderstorms were located along a line
extending from near Highlands to near Asbury Park, moving east at 10
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...
Long Branch, Asbury Park, Manasquan, Elberon, Neptune City, Spring
Lake Heights, Bradley Beach, Spring Lake, Avon-By-the-sea, Sea Girt,
Interlaken, Deal, Allenhurst, Loch Arbour, Ocean Grove, Shark River
Hills, West Belmar, South Belmar, Wanamassa and Oakhurst.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4027 7397 4014 7399 4012 7400 4012 7401
      4014 7408 4034 7397
TIME...MOT...LOC 2050Z 265DEG 10KT 4041 7394 4016 7399 

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

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 1:27 PM EDTAreal Flood AdvisoryPHIWarren3 hr
Jun 8, 1:49 PM EDTSpecial Weather StatementPHIWarren26 min
Jun 8, 1:54 PM EDTAreal Flood AdvisoryPHIMorris, Sussex95 min
Jun 8, 2:19 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer2 hr
Jun 8, 2:29 PM EDTSpecial Weather StatementPHIMorris16 min
Jun 8, 2:48 PM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset27 min
Jun 8, 3:13 PM EDTSpecial Weather StatementPHIHunterdon, Somerset32 min
Jun 8, 3:14 PM EDTAreal Flood AdvisoryPHIMiddlesex, Somerset74 min
Jun 8, 4:14 PM EDTSpecial Marine WarningPHI91 min
Jun 8, 4:44 PM EDTSpecial Weather StatementPHISalem31 min
Jun 8, 4:47 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem43 min
Jun 8, 4:54 PM EDTSpecial Marine WarningPHI96 min
Jun 8, 4:56 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden, Gloucester49 min
Jun 8, 4:58 PM EDTSevere Thunderstorm WarningPHIOcean47 min
Jun 8, 5:30 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem45 min
Jun 8, 5:43 PM EDTSpecial Weather StatementPHIOcean32 min
Jun 8, 6:01 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Ocean44 min
Jun 8, 6:22 PM EDTSpecial Marine WarningPHI83 min
Jun 8, 7:39 PM EDTSpecial Marine WarningPHI66 min
Jun 8, 7:52 PM EDTSpecial Weather StatementPHICape May38 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.