Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 168, NWS Philadelphia/Mount Holly

July 12, 2021Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2021, 4:33 PM EDT for Monmouth County, Ocean County, New Jersey. It was in force for 42 min. 7 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 12, 2021, 4:33 PM EDT (20:33 UTC)
Expired: Jul 12, 2021, 5:15 PM EDT
In force: 42 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 70.0 mph

Counties Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 19 km from the middle of the area, began a volume at 20:35 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

Time	Report	Where	Remark
Jul 12, 4:45 PM EDT	TSTM WND DMG	1 N Ocean Gate, NJ	SEVERAL REPORTS OF DOWNED WIRES AND POWER OUTAGES IN THE ISLAND HEIGHTS AREA. TIME ESTIMATED FROM RADAR.
Jul 12, 4:45 PM EDT	TSTM WND DMG	2 Nne Toms River, NJ	DOWNED POWER LINES NEAR OAK AVENUE. TIME ESTIMATED FROM RADAR.
Jul 12, 4:52 PM EDT	TSTM WND DMG	1 Nnw Lakewood, NJ	WIRES DOWN ON OCEAN AVE IN LAKEWOOD. TIME ESTIMATED FROM RADAR.
Jul 12, 4:55 PM EDT	TSTM WND DMG	1 Ssw Leisure Village E, NJ	NUMEROUS REPORTS OF DOWNED WIRES BETWEEN LAKEWOOD AND TOMS RIVER.
Jul 12, 4:55 PM EDT	TSTM WND DMG	Brick, NJ	SEVERAL TREES DOWN IN BRICK TWP. TIME ESTIMATED FROM RADAR.
Jul 12, 4:56 PM EDT	TSTM WND DMG	Brick, NJ	NUMEROUS DOWNED WIRE REPORTS IN BRICK TWP. TIME ESTIMATED FROM RADAR.
Jul 12, 5:06 PM EDT	HAIL 1	3 N Ocean Gate, NJ

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.

Issued	Product	Office	Lasted
Jul 12, 3:34 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.6 hours before the alert went out and 148 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 857 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

149 
WUUS51 KPHI 122033
SVRPHI
NJC025-029-122115-
/O.NEW.KPHI.SV.W.0168.210712T2033Z-210712T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
433 PM EDT Mon Jul 12 2021

The National Weather Service in Mount Holly NJ has issued a

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

* Until 515 PM EDT.

* At 432 PM EDT, a severe thunderstorm was located over Pleasant
  Plains, or over Toms River, moving east at 15 mph.

  HAZARD...70 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Toms River, Lakewood, Jackson, Beachwood, Manasquan, Point Pleasant
  Beach, Seaside Heights, Lakehurst, Mantoloking, Leisure Village,
  Allenwood, Dover Beaches North, Holiday City South, Pleasant
  Plains, Cedar Glen West, Leisure Village East, Dover Beaches South,
  Holiday City-Berkeley, Ramtown and Brick Township.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 31 and 34.
 Garden State Parkway between mile markers 78 and 98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 3992 7434 4014 7430 4020 7399 3986 7407
TIME...MOT...LOC 2032Z 276DEG 12KT 4000 7423 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
 
$$

CMS

3 follow-up statements

158 
WWUS51 KPHI 122046
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
446 PM EDT Mon Jul 12 2021

NJC025-029-122115-
/O.CON.KPHI.SV.W.0168.000000T0000Z-210712T2115Z/
Ocean NJ-Monmouth NJ-
446 PM EDT Mon Jul 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHEASTERN OCEAN AND SOUTHEASTERN MONMOUTH COUNTIES...

At 446 PM EDT, a severe thunderstorm was located over Toms River,
moving east at 15 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Law enforcement.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Toms River, Lakewood, Beachwood, Manasquan, Point Pleasant Beach,
Seaside Heights, Mantoloking, Leisure Village, Allenwood, Dover
Beaches North, Holiday City South, Pleasant Plains, Leisure Village
East, Dover Beaches South, Ramtown, Brick Township, Leisure Village
West-Pine Lake Park, Holiday City-Berkeley, Point Pleasant and
Neptune City.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 31 and 34.
 Garden State Parkway between mile markers 78 and 98.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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. 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 3986 7407 3990 7426 4015 7426 4020 7399
TIME...MOT...LOC 2046Z 276DEG 12KT 4000 7417 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
 
$$

CMS

177 
WWUS51 KPHI 122100
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
500 PM EDT Mon Jul 12 2021

NJC025-029-122115-
/O.CON.KPHI.SV.W.0168.000000T0000Z-210712T2115Z/
Ocean NJ-Monmouth NJ-
500 PM EDT Mon Jul 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHEASTERN OCEAN AND SOUTHEASTERN MONMOUTH COUNTIES...

At 459 PM EDT, a severe thunderstorm was located over Dover Beaches
North, or near Toms River, moving east at 15 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Law enforcement. Several reports of power outages and wires 
         down have been received from the Lakewood and Toms River 
         areas.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Toms River, Lakewood, Beachwood, Manasquan, Point Pleasant Beach,
Seaside Heights, Mantoloking, Leisure Village, Allenwood, Dover
Beaches North, Leisure Village East, Dover Beaches South, Ramtown,
Brick Township, Point Pleasant, Neptune City, Brielle, Spring Lake
Heights, Bradley Beach and South Toms River.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 31 and 34.
 Garden State Parkway between mile markers 86 and 99.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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. 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 3986 7407 3989 7421 4017 7417 4020 7399
TIME...MOT...LOC 2059Z 276DEG 12KT 4000 7411 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...70MPH
 
$$

CMS

687 
WWUS51 KPHI 122117
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
517 PM EDT Mon Jul 12 2021

NJC025-029-122127-
/O.EXP.KPHI.SV.W.0168.000000T0000Z-210712T2115Z/
Ocean NJ-Monmouth NJ-
517 PM EDT Mon Jul 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OCEAN AND
SOUTHEASTERN MONMOUTH COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However, gusty 
winds are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central and southern New Jersey.

LAT...LON 3986 7407 3989 7421 4017 7417 4020 7399
TIME...MOT...LOC 2117Z 276DEG 12KT 3999 7404 

$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 1:59 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	3 hr
Jul 12, 2:12 PM EDT	Flash Flood Warning Emergency	PHI	Burlington	7 hr
Jul 12, 2:20 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Monmouth	3 hr
Jul 12, 2:37 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Monmouth	93 min
Jul 12, 3:08 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	67 min
Jul 12, 3:31 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	41 min
Jul 12, 4:26 PM EDT	Special Marine Warning	PHI		2 hr
Jul 12, 4:52 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	98 min
Jul 12, 5:08 PM EDT	Areal Flood Advisory	PHI	Sussex	5 hr
Jul 12, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer	67 min
Jul 12, 5:26 PM EDT	Areal Flood Advisory	PHI	Camden	2 hr
Jul 12, 5:36 PM EDT	Special Weather Statement	PHI	Sussex	24 min
Jul 12, 5:41 PM EDT	Areal Flood Advisory	PHI	Burlington	83 min
Jul 12, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	63 min
Jul 12, 6:01 PM EDT	Flash Flood Warning	PHI	Camden	102 min
Jul 12, 6:08 PM EDT	Areal Flood Advisory	PHI	Morris	98 min
Jul 12, 6:43 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	93 min
Jul 12, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	34 min
Jul 12, 7:00 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	112 min
Jul 12, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	Salem	69 min
Jul 12, 7:11 PM EDT	Flash Flood Warning	PHI	Morris, Sussex	35 min
Jul 12, 7:33 PM EDT	Special Marine Warning	PHI		58 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021 Every 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.