Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 19, NWS Philadelphia/Mount Holly

April 1, 20235 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 1, 2023, 7:52 PM EDT for 5 counties in New Jersey. It was in force for 38 min. 6 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: Apr 1, 2023, 7:52 PM EDT (23:52 UTC)
Expired: Apr 1, 2023, 8:30 PM EDT
In force: 38 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ, Cumberland County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 23:55 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
Apr 1, 7:59 PM EDT	MARINE TSTM WIND 38	2 S Island Beach State, NJ
Apr 1, 8:04 PM EDT	TSTM WND GST 60	Atlantic City Internati, NJ
Apr 1, 8:05 PM EDT	TSTM WND GST 59	Surf City, NJ	WUNDERGROUND STATION KNJSURFC12.
Apr 1, 8:05 PM EDT	MARINE TSTM WIND 59	Surf City, NJ	WUNDERGROUND STATION KNJSURFC12.
Apr 1, 8:12 PM EDT	TSTM WND DMG	3 Ese Dennisville, NJ	MULTIPLE TREES DOWNED ON CORSON TAVERN ROAD AND ROUTE 9. TIME ESTIMATED VIA RADAR.
Apr 1, 8:12 PM EDT	MARINE TSTM WIND 45	1 Ssw North Cape May, 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
Apr 1, 5:30 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.9 hours before the alert went out and 182 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: 706 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 434 m²/s²
0-3 km storm-relative helicity: 376 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

565 
WUUS51 KPHI 012352
SVRPHI
NJC001-005-009-011-029-020030-
/O.NEW.KPHI.SV.W.0019.230401T2352Z-230402T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
752 PM EDT Sat Apr 1 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Atlantic County in southern New Jersey...
  Southeastern Cumberland County in southern New Jersey...
  Southeastern Ocean County in southern New Jersey...
  Cape May County in southern New Jersey...
  Southeastern Burlington County in southern New Jersey...

* Until 830 PM EDT.

* At 751 PM EDT, severe thunderstorms were located along a line
  extending from Barnegat to Mays Landing to near Fortesque, moving 
  east at 60 mph. This storm recently produced a 58 mph wind gust at 
  Millville.

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

  SOURCE...Trained weather spotters.

  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...
  Atlantic City, Millville, Ocean City, Cape May, Cumberland,
  Barnegat, Pleasantville, Somers Point, Ventnor City, Brigantine,
  Northfield, Absecon, Margate City, Egg Harbor City, North Wildwood,
  Laurel Lake, Tuckerton, Wildwood Crest, Woodbine and Sea Isle City.

This includes the following highways...
 Garden State Parkway between mile markers 0 and 74.
 Atlantic City Expressway between mile markers 0 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey.

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.

A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey.

&&

LAT...LON 3990 7400 3975 7404 3931 7437 3888 7488
      3890 7501 3914 7496 3919 7528 3946 7481
      3984 7426
TIME...MOT...LOC 2351Z 274DEG 52KT 3977 7424 3946 7474 3923 7513 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Staarmann

2 follow-up statements

552 
WWUS51 KPHI 020008
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
808 PM EDT Sat Apr 1 2023

NJC001-005-009-011-029-020030-
/O.CON.KPHI.SV.W.0019.000000T0000Z-230402T0030Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Cape May NJ-Burlington NJ-
808 PM EDT Sat Apr 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR ATLANTIC...SOUTHEASTERN CUMBERLAND...SOUTHEASTERN OCEAN...CAPE
MAY AND SOUTHEASTERN BURLINGTON COUNTIES...

At 807 PM EDT, severe thunderstorms were located along a line
extending from 12 miles northeast of Surf City to Absecon to near 
Eldora, moving east at 60 mph. The Atlantic City International 
Airport measured a 60 mph wind gust.

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

SOURCE...Trained weather spotters.

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...
Atlantic City, Millville, Ocean City, Cape May, Cumberland, Barnegat,
Pleasantville, Somers Point, Ventnor City, Brigantine, Northfield,
Absecon, Margate City, Egg Harbor City, North Wildwood, Laurel Lake,
Tuckerton, Wildwood Crest, Woodbine and Sea Isle City.

This includes the following highways...
 Garden State Parkway between mile markers 0 and 74.
 Atlantic City Expressway between mile markers 0 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey.

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.

&&

LAT...LON 3990 7400 3975 7404 3931 7437 3888 7488
      3890 7501 3914 7496 3919 7528 3946 7481
      3984 7426
TIME...MOT...LOC 0007Z 274DEG 52KT 3975 7397 3945 7447 3922 7486 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Staarmann

335 
WWUS51 KPHI 020022
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
822 PM EDT Sat Apr 1 2023

NJC001-005-009-011-029-020031-
/O.EXP.KPHI.SV.W.0019.000000T0000Z-230402T0030Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Cape May NJ-Burlington NJ-
822 PM EDT Sat Apr 1 2023

...THE SEVERE THUNDERSTORM WARNING FOR ATLANTIC...SOUTHEASTERN
CUMBERLAND...SOUTHEASTERN OCEAN...CAPE MAY AND SOUTHEASTERN
BURLINGTON COUNTIES WILL EXPIRE AT 830 PM EDT...
    
The storms which prompted the warning are moving offshore. 
Therefore, the warning will be allowed to expire. However gusty 
winds will continue into tonight.

A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey.

LAT...LON 3990 7400 3975 7404 3931 7437 3888 7488
      3890 7501 3914 7496 3919 7528 3946 7481
      3984 7426
TIME...MOT...LOC 0021Z 274DEG 52KT 3974 7374 3944 7424 3921 7463 

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	67 min
Apr 1, 6:18 PM EDT	Special Marine Warning	PHI		87 min
Apr 1, 6:18 PM EDT	Special Weather Statement	PHI	Morris	42 min
Apr 1, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	44 min
Apr 1, 6:37 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth	53 min
Apr 1, 6:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Cumberland, Gloucester, Salem	51 min
Apr 1, 6:45 PM EDT	Tornado Warning	PHI	Burlington, Mercer	30 min
Apr 1, 6:57 PM EDT	Tornado Warning	PHI	Burlington, Camden	33 min
Apr 1, 7:05 PM EDT	Special Marine Warning	PHI		55 min
Apr 1, 7:07 PM EDT	Tornado Warning	PHI	Burlington, Mercer, Monmouth, Ocean	38 min
Apr 1, 7:11 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Burlington, Camden, Gloucester, Mercer, Middlesex and 2 more	64 min
Apr 1, 7:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Cape May, Cumberland, Gloucester, Salem	51 min
Apr 1, 7:26 PM EDT	Special Marine Warning	PHI		64 min
Apr 1, 7:27 PM EDT	Special Marine Warning	PHI		93 min
Apr 1, 7:31 PM EDT	Tornado Warning	PHI	Monmouth, Ocean	29 min
Apr 1, 7:33 PM EDT	Tornado Warning	PHI	Burlington, Ocean	27 min
Apr 1, 7:47 PM EDT	Special Marine Warning	PHI		88 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023 Every severe thunderstorm warning in 2023

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.