Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 152, NWS Philadelphia/Mount Holly

July 22, 2020Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2020, 3:04 PM EDT for Sussex County, New Jersey. It was in force for 30 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 22, 2020, 3:04 PM EDT (19:04 UTC)
Expired: Jul 22, 2020, 3:34 PM EDT
In force: 30 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 70.0 mph

County Sussex County, NJ

The radar

The Binghamton radar (KBGM), 146 km from the middle of the area, began a volume at 19:03 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 22, 3:15 PM EDT	HAIL 1.25	1 Se Montague, NJ
Jul 22, 3:16 PM EDT	TSTM WND DMG	1 Sse Montague, NJ	A LARGE TREE WAS SPLIT AT A RESIDENCE ON RED HILL RD. TIME ESTIMATED FROM RADAR.
Jul 22, 3:16 PM EDT	HAIL 1.25	1 Se Montague, NJ	HAIL UP TO HALF DOLLAR SIZE FELL. TIME ESTIMATED FROM RADAR.
Jul 22, 3:18 PM EDT	TSTM WND DMG	1 E Montague, NJ	SEVERAL REPORTS OF DOWNED TREES AND WIRES IN MONTAGUE TWP, INCLUDING NEAR CLOVE ROAD AND NEAR NEW ROAD. TIME ESTIMATED FROM RADAR.
Jul 22, 3:18 PM EDT	TSTM WND DMG	2 S Montague, NJ	TREE DOWN ON DECKERTON TPKE NEAR THE INTERSECTION WITH CR-675. TIME ESTIMATED FROM RADAR.
Jul 22, 3:24 PM EDT	TSTM WND DMG	High Point, NJ	REPORTS OF DOWNED TREE LIMBS AND WIRES NEAR LAKE MARCIA. TIME ESTIMATED FROM RADAR.
Jul 22, 3:30 PM EDT	HAIL 1.5	Montague, NJ	PING PONG BALL SIZED HAIL REPORTED IN MONTAGUE. PHOTOS VIA SOCIAL MEDIA.

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 22, 2:57 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.1 hours before the alert went out and 164 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: 15 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 1410 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

281 
WUUS51 KPHI 221904
SVRPHI
NJC037-221945-
/O.NEW.KPHI.SV.W.0152.200722T1904Z-200722T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
304 PM EDT Wed Jul 22 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northern Sussex County in northwestern New Jersey...

* Until 345 PM EDT.

* At 303 PM EDT, a severe thunderstorm was located over Dingmans
  Ferry, or 7 miles southwest of Montague, moving northeast at 30
  mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Montague, Sussex, Branchville, High Point, Crandon Lakes, Vernon
  Valley and Hainesville.

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 4123 7442 4112 7484 4118 7489 4121 7486
      4123 7487 4126 7484 4128 7484 4132 7479
      4133 7476 4135 7475 4135 7472 4136 7469
TIME...MOT...LOC 1903Z 234DEG 26KT 4124 7490 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

CMS

3 follow-up statements

316 
WWUS51 KPHI 221920
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
320 PM EDT Wed Jul 22 2020

NJC037-221945-
/O.CON.KPHI.SV.W.0152.000000T0000Z-200722T1945Z/
Sussex NJ-
320 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHEASTERN SUSSEX COUNTY...

At 319 PM EDT, a severe thunderstorm was located near Montague, 
moving northeast at 35 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Law enforcement.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Montague, Vernon Valley, High Point and Hainesville. 

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.

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 4123 7442 4121 7479 4126 7484 4128 7484
      4132 7479 4133 7476 4135 7475 4135 7472
      4136 7469
TIME...MOT...LOC 1919Z 238DEG 29KT 4131 7474 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

CMS

673 
WWUS51 KPHI 221929
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
329 PM EDT Wed Jul 22 2020

NJC037-221945-
/O.CON.KPHI.SV.W.0152.000000T0000Z-200722T1945Z/
Sussex NJ-
329 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHEASTERN SUSSEX COUNTY...

At 328 PM EDT, a severe thunderstorm was located near High Point, 
moving northeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Law enforcement.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
High Point.

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.

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 4126 7448 4126 7467 4133 7476 4135 7475
      4135 7472 4136 7469
TIME...MOT...LOC 1928Z 234DEG 26KT 4135 7466 

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

CMS

360 
WWUS51 KPHI 221934
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
334 PM EDT Wed Jul 22 2020

NJC037-221944-
/O.CAN.KPHI.SV.W.0152.000000T0000Z-200722T1945Z/
Sussex NJ-
334 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SUSSEX COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However, gusty winds are 
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northwestern New Jersey.

LAT...LON 4126 7448 4126 7467 4133 7476 4135 7475
      4135 7472 4136 7469
TIME...MOT...LOC 1934Z 234DEG 26KT 4138 7461 

$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 10:57 PM EDT	Special Marine Warning	PHI		63 min
Jul 22, 2:10 PM EDT	Severe Thunderstorm Warning	PHI	Warren	50 min
Jul 22, 3:18 PM EDT	Special Weather Statement	PHI	Morris, Warren	42 min
Jul 22, 3:50 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	29 min
Jul 22, 4:33 PM EDT	Special Weather Statement	PHI	Morris	57 min
Jul 22, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	49 min
Jul 22, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	59 min
Jul 22, 5:23 PM EDT	Areal Flood Advisory	PHI	Warren	3 hr
Jul 22, 5:33 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester	57 min
Jul 22, 5:40 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Somerset	65 min
Jul 22, 5:49 PM EDT	Special Marine Warning	PHI		86 min
Jul 22, 5:54 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	51 min
Jul 22, 6:04 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	60 min
Jul 22, 6:12 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Salem	48 min
Jul 22, 6:17 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	52 min
Jul 22, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	44 min
Jul 22, 6:47 PM EDT	Special Marine Warning	PHI		28 min
Jul 22, 6:52 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	113 min
Jul 22, 6:52 PM EDT	Special Marine Warning	PHI		41 min
Jul 22, 7:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 22, 7:23 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	52 min
Jul 22, 7:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	47 min
Jul 22, 7:59 PM EDT	Special Marine Warning	PHI		61 min

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.