Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 201, NWS Philadelphia/Mount Holly

July 15, 2023Cumberland County, Salem County, New Jersey; Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2023, 3:40 PM EDT for Cumberland County, Salem County, New Jersey; Kent County, New Castle County, Delaware. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 15, 2023, 3:40 PM EDT (19:40 UTC)
Expired: Jul 15, 2023, 4:45 PM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kent County, DE, New Castle County, DE, Cumberland County, NJ, Salem County, NJ

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.7 hours before the alert went out and 160 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: 2037 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 544 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

122 
WUUS51 KPHI 151940
SVRPHI
DEC001-003-NJC011-033-152045-
/O.NEW.KPHI.SV.W.0201.230715T1940Z-230715T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
340 PM EDT Sat Jul 15 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  South central New Castle County in northern Delaware...
  North central Kent County in central Delaware...
  West central Cumberland County in southern New Jersey...
  Southwestern Salem County in southern New Jersey...

* Until 445 PM EDT.

* At 340 PM EDT, a severe thunderstorm was located over Woodland
  Beach, or 13 miles southeast of Middletown, moving northeast at 5
  mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Quinton, Greenwich, Shiloh, Hancocks Bridge, Newport Meadows,
  Woodland Beach and Chambersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3925 7552 3932 7560 3941 7562 3955 7542
      3946 7528 3932 7522
TIME...MOT...LOC 1940Z 246DEG 5KT 3936 7549 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

1 follow-up statement

875 
WWUS51 KPHI 152003
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
403 PM EDT Sat Jul 15 2023

DEC001-003-152012-
/O.CAN.KPHI.SV.W.0201.000000T0000Z-230715T2045Z/
New Castle DE-Kent DE-
403 PM EDT Sat Jul 15 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NEW CASTLE AND
NORTH CENTRAL KENT COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3952 7538 3949 7532 3945 7528 3932 7522
      3929 7539 3940 7550
TIME...MOT...LOC 2002Z 244DEG 6KT 3939 7541 

$$

NJC011-033-152045-
/O.CON.KPHI.SV.W.0201.000000T0000Z-230715T2045Z/
Cumberland NJ-Salem NJ-
403 PM EDT Sat Jul 15 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR WEST CENTRAL CUMBERLAND AND SOUTH CENTRAL SALEM COUNTIES...

At 402 PM EDT, a severe thunderstorm was located over Newport
Meadows, or 9 miles west of Bridgeton, moving northeast at 5 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Greenwich, Shiloh and Newport Meadows. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3952 7538 3949 7532 3945 7528 3932 7522
      3929 7539 3940 7550
TIME...MOT...LOC 2002Z 244DEG 6KT 3939 7541 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 8:05 PM EDT	Special Weather Statement	PHI	Morris	40 min
Jul 14, 8:29 PM EDT	Flash Flood Warning	PHI	Morris	4 hr
Jul 14, 9:13 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Warren	3 hr
Jul 14, 9:51 PM EDT	Special Weather Statement	PHI	Morris, Somerset	24 min
Jul 14, 9:57 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	41 min
Jul 14, 11:32 PM EDT	Special Weather Statement	PHI	Mercer, Monmouth	28 min
Jul 15, 3:44 AM EDT	Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	38 hr
Jul 15, 1:33 PM EDT	Special Marine Warning	PHI		57 min
Jul 15, 1:43 PM EDT	Special Weather Statement	PHI	Salem	32 min
Jul 15, 2:56 PM EDT	Special Weather Statement	PHI	Mercer	34 min
Jul 15, 3:08 PM EDT	Special Weather Statement	PHI	Hunterdon	37 min
Jul 15, 3:22 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	38 min
Jul 15, 3:29 PM EDT	Special Marine Warning	PHI		61 min
Jul 15, 3:30 PM EDT	Special Weather Statement	PHI	Salem	30 min
Jul 15, 4:08 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	67 min
Jul 15, 4:11 PM EDT	Special Weather Statement	PHI	Gloucester	34 min
Jul 15, 4:31 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer	106 min
Jul 15, 4:52 PM EDT	Special Weather Statement	PHI	Cumberland	23 min
Jul 15, 4:53 PM EDT	Special Weather Statement	PHI	Middlesex	37 min
Jul 15, 5:00 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Somerset	2 hr
Jul 15, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex	63 min
Jul 15, 5:18 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer, Middlesex, Somerset	4 hr
Jul 15, 5:27 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	99 min
Jul 15, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	45 min
Jul 15, 5:49 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	41 min
Jul 15, 6:09 PM EDT	Flash Flood Warning Considerable damage threat	PHI	Mercer	4 hr
Jul 15, 6:21 PM EDT	Special Weather Statement	PHI	Mercer	24 min
Jul 15, 1:48 PM EDT	Special Weather Statement	PHI	New Castle	27 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023 Severe Thunderstorm Warnings in Delaware, 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; the sounding from the Mesonet's radiosonde archive.