Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly

April 1, 20235 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 1, 2023, 7:24 PM EDT for 5 counties in New Jersey. It was in force for 51 min. 2 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, 7:24 PM EDT (23:24 UTC)
Expired: Apr 1, 2023, 8:15 PM EDT
In force: 51 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, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 74 km from the middle of the area, began a volume at 23:28 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, 7:42 PM EDT	TORNADO	2 Sse Richland, NJ	A TORNADO FORMED ALONG A LINE OF THUNDERSTORMS AND MADE AN INITIAL TOUCHDOWN JUST EAST OF LLEWELLYN AVENUE AND SOUTH OF US HWY 40 IN THE RICHLAND SECTION OF BUENA VISTA TOWNSHIP. THIS WAS A HEAVILY FORESTED AREA WITH LARGE BRANCHES SNAPPED. THE TORNADO CONTINU
Apr 1, 7:44 PM EDT	TSTM WND GST 58	Millville Municipal Air, 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, 11.4 hours before the alert went out and 167 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.

021 
WUUS51 KPHI 012324
SVRPHI
NJC001-009-011-015-033-020015-
/O.NEW.KPHI.SV.W.0016.230401T2324Z-230402T0015Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Atlantic County in southern New Jersey...
  Cumberland County in southern New Jersey...
  Central Salem County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Northwestern Cape May County in southern New Jersey...

* Until 815 PM EDT.

* At 724 PM EDT, severe thunderstorms were located along a line
  extending from near Elmer to Seabrook Farms to near Newport
  Meadows, moving east at 45 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...
  Vineland, Millville, Bridgeton, Cumberland, Glassboro, Clayton,
  Buena, Laurel Lake, Woodstown, Alloway, Weymouth, Estell Manor,
  Newfield, Elmer, Greenwich, Shiloh, Corbin City, Newport,
  Franklinville and Leesburg.

This includes Atlantic City Expressway between mile markers 11 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 3948 7456 3915 7499 3915 7516 3942 7551
      3973 7525
TIME...MOT...LOC 2324Z 290DEG 38KT 3965 7517 3952 7519 3940 7540 

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

$$

Staarmann

2 follow-up statements

557 
WWUS51 KPHI 012342
SVSPHI

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

NJC033-012352-
/O.CAN.KPHI.SV.W.0016.000000T0000Z-230402T0015Z/
Salem NJ-
742 PM EDT Sat Apr 1 2023

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SALEM COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

LAT...LON 3915 7499 3915 7510 3927 7531 3933 7539
      3943 7511 3946 7509 3946 7508 3947 7508
      3963 7498 3948 7456
TIME...MOT...LOC 2342Z 294DEG 39KT 3953 7488 3940 7497 3926 7520 

$$

NJC001-009-011-015-020015-
/O.CON.KPHI.SV.W.0016.000000T0000Z-230402T0015Z/
Atlantic NJ-Cumberland NJ-Gloucester NJ-Cape May NJ-
742 PM EDT Sat Apr 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN ATLANTIC...CUMBERLAND...SOUTHEASTERN GLOUCESTER AND
NORTHWESTERN CAPE MAY COUNTIES...

At 742 PM EDT, severe thunderstorms were located along a line
extending from near Buena to near Cumberland to near Fortesque,
moving southeast at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Vineland, Millville, Cumberland, Buena, Laurel Lake, Weymouth, Estell
Manor, Newfield, Corbin City, Newport, Leesburg, Dorothy, Bricksboro,
Fortesque, Eldora, Mauricetown, Belleplain Forest, Mays Landing, Port
Norris and Dividing Creek.

This includes Atlantic City Expressway between mile markers 11 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 3915 7499 3915 7510 3927 7531 3933 7539
      3943 7511 3946 7509 3946 7508 3947 7508
      3963 7498 3948 7456
TIME...MOT...LOC 2342Z 294DEG 39KT 3953 7488 3940 7497 3926 7520 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Staarmann

757 
WWUS51 KPHI 012353
SVSPHI

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

NJC015-020003-
/O.CAN.KPHI.SV.W.0016.000000T0000Z-230402T0015Z/
Gloucester NJ-
753 PM EDT Sat Apr 1 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GLOUCESTER COUNTY
IS CANCELLED...

The storms which prompted the warning have weakened. moved out of 
the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 3915 7499 3915 7510 3927 7531 3933 7539
      3943 7511 3945 7502 3959 7486 3948 7456
TIME...MOT...LOC 2353Z 270DEG 38KT 3949 7475 3936 7484 3922 7507 

$$

NJC001-009-011-020015-
/O.CON.KPHI.SV.W.0016.000000T0000Z-230402T0015Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
753 PM EDT Sat Apr 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN ATLANTIC...CUMBERLAND AND NORTHWESTERN CAPE MAY
COUNTIES...

At 753 PM EDT, severe thunderstorms were located along a line
extending from near Weymouth to near Dorothy to near Bivalve, moving 
east at 45 mph. This storm recently produced a 58 mph wind gust at 
Millville.

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

SOURCE...Trained weather spotters.

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

Locations impacted include...
Vineland, Millville, Cumberland, Buena, Laurel Lake, Weymouth, Estell
Manor, Corbin City, Newport, Leesburg, Dorothy, Bricksboro,
Fortesque, Eldora, Mauricetown, Belleplain Forest, Mays Landing, Port
Norris, Dividing Creek and Fairton.

This includes Atlantic City Expressway between mile markers 11 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 3915 7499 3915 7510 3927 7531 3933 7539
      3943 7511 3945 7502 3959 7486 3948 7456
TIME...MOT...LOC 2353Z 270DEG 38KT 3949 7475 3936 7484 3922 7507 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

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, 7:26 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
Apr 1, 7:52 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	38 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.