Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 299, NWS Philadelphia/Mount Holly

November 15, 2020Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 15, 2020, 8:43 PM EST for Monmouth County, New Jersey. It was in force for 47 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: Nov 15, 2020, 8:43 PM EST (01:43 UTC)
Expired: Nov 15, 2020, 9:30 PM EST
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 01:47 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
Nov 15, 8:48 PM EST	TSTM WND DMG	2 Ese Freehold Twp, NJ	REPORTS OF DOWNED TREES AND POWER LINES IN THE FREEHOLD AND ADELPHIA AREAS. TIME ESTIMATED FROM RADAR.
Nov 15, 9:00 PM EST	TSTM WND DMG	3 W Wanamassa, NJ	SEVERAL REPORTS OF DOWNED TREE LIMBS AND POWER LINES IN THE ASBURY PARK, DEAL, AND NEPTUNE CITY AREAS. TIME ESTIMATED FROM RADAR.
Nov 15, 9:05 PM EST	TSTM WND DMG	1 Wsw Neptune City, NJ	TREE INTO A HOME IN SHARK RIVER HILLS. TIME ESTIMATED.

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
Nov 15, 5:35 PM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 1.7 hours before the alert went out and 120 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 741 m²/s²
0-3 km storm-relative helicity: 834 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WUUS51 KPHI 160143
SVRPHI
NJC025-160230-
/O.NEW.KPHI.SV.W.0299.201116T0143Z-201116T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
843 PM EST Sun Nov 15 2020

The National Weather Service in Mount Holly NJ has issued a

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

* Until 930 PM EST.

* At 842 PM EST, intense showers and some embedded severe 
  thunderstorms were located along a line extending from near Crown 
  Heights to Six Flags Theme Park, moving east at 55 mph.

This line may contain little or no lightning. Do not wait until you 
hear thunder before taking cover.

  HAZARD...60 mph wind gusts.

  SOURCE...Trained weather spotters.

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

* Locations impacted include...
  Long Branch, Asbury Park, Sandy Hook, Middletown, Howell, Marlboro,
  Manalapan, Tinton Falls, Holmdel, Red Bank, Matawan, Highlands,
  Farmingdale, East Freehold, West Freehold, Adelphia, Clarksburg,
  Yorketown, Elberon and Navesink.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 14 and 15, and
between mile markers 27 and 34.
 Garden State Parkway between mile markers 98 and 120.

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 4015 7397 4017 7449 4031 7437 4040 7425
      4044 7424 4044 7420 4046 7418 4041 7399
      4044 7399 4048 7402 4047 7399 4043 7397
TIME...MOT...LOC 0142Z 261DEG 47KT 4070 7391 4013 7442 

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

Gorse

2 follow-up statements

139 
WWUS51 KPHI 160202
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
902 PM EST Sun Nov 15 2020

NJC025-160230-
/O.CON.KPHI.SV.W.0299.000000T0000Z-201116T0230Z/
Monmouth NJ-
902 PM EST Sun Nov 15 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EST
FOR EASTERN MONMOUTH COUNTY...

At 902 PM EST, intense showers and some embedded severe 
thunderstorms were located along a line extending from near Sandy 
Hook to Ramtown, moving east at 50 mph.

This line has a history of producing areas of wind damage.

This line may contain little or no lightning. Do not wait until you 
hear thunder before taking cover.

HAZARD...60 mph wind gusts.

SOURCE...Trained weather spotters.

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

Locations impacted include...
Long Branch, Asbury Park, Sandy Hook, Middletown, Howell, Tinton
Falls, Red Bank, Highlands, Farmingdale, Elberon, Navesink,
Collingwood Park, Lincroft, Freewood Acres, Allenwood, Eatontown,
West Long Branch, Rumson, Little Silver and Oceanport.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 27 and 34.
 Garden State Parkway between mile markers 98 and 113.

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 4015 7397 4016 7423 4017 7428 4018 7428
      4044 7409 4041 7399 4041 7398 4048 7402
      4047 7399 4043 7397
TIME...MOT...LOC 0202Z 276DEG 43KT 4045 7388 4012 7415 

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

Gorse

386 
WWUS51 KPHI 160222
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
922 PM EST Sun Nov 15 2020

NJC025-160232-
/O.EXP.KPHI.SV.W.0299.000000T0000Z-201116T0230Z/
Monmouth NJ-
922 PM EST Sun Nov 15 2020

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MONMOUTH COUNTY WILL
EXPIRE AT 930 PM EST...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 4015 7397 4016 7423 4017 7428 4018 7428
      4044 7409 4041 7399 4041 7398 4048 7402
      4047 7399 4043 7397
TIME...MOT...LOC 0222Z 261DEG 47KT 4049 7357 4016 7384 

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 15, 7:31 PM EST	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more	74 min
Nov 15, 7:50 PM EST	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	70 min
Nov 15, 8:12 PM EST	Special Marine Warning	PHI		63 min
Nov 15, 8:39 PM EST	Special Marine Warning	PHI		2 hr
Nov 15, 8:54 PM EST	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean	51 min
Nov 15, 9:53 PM EST	Small Craft Advisory	PHI		27 hr
Nov 15, 11:02 PM EST	Coastal Flood Statement	PHI	Ocean	3 hr
Nov 16, 3:20 PM EST	Gale Watch	PHI		13 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020 Every 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.