Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 28, NWS Philadelphia/Mount Holly

April 15, 2023Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2023, 1:49 PM EDT for Sussex County, New Jersey. It was in force for 26 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: Apr 15, 2023, 1:49 PM EDT (17:49 UTC)
Expired: Apr 15, 2023, 2:15 PM EDT
In force: 26 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Sussex County, NJ

The radar

The Binghamton radar (KBGM), 147 km from the middle of the area, began a volume at 17:52 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 5.8 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: 26 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

160 
WUUS51 KPHI 151749
SVRPHI
NJC037-151815-
/O.NEW.KPHI.SV.W.0028.230415T1749Z-230415T1815Z/

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

The National Weather Service in Mount Holly NJ has issued a

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

* Until 215 PM EDT.

* At 149 PM EDT, a severe thunderstorm was located near Sussex, or 8
  miles southeast of Montague, moving north at 10 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible.

* Locations impacted include...
  Sussex and High Point. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4135 7468 4127 7451 4118 7457 4120 7476
      4134 7477 4135 7475 4135 7472 4136 7469
TIME...MOT...LOC 1749Z 191DEG 11KT 4124 7465 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MLB

2 follow-up statements

143 
WWUS51 KPHI 151803
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
203 PM EDT Sat Apr 15 2023

NJC037-151815-
/O.CON.KPHI.SV.W.0028.000000T0000Z-230415T1815Z/
Sussex NJ-
203 PM EDT Sat Apr 15 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR NORTH CENTRAL SUSSEX COUNTY...

At 203 PM EDT, a severe thunderstorm was located over High Point, or
near Matamoras, moving north at 15 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible.

Locations impacted include...
Sussex and High Point. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4135 7468 4127 7451 4118 7457 4120 7476
      4134 7477 4135 7475 4135 7472 4136 7469
TIME...MOT...LOC 1803Z 191DEG 11KT 4128 7464 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MLB

826 
WWUS51 KPHI 151814
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
214 PM EDT Sat Apr 15 2023

NJC037-151824-
/O.EXP.KPHI.SV.W.0028.000000T0000Z-230415T1815Z/
Sussex NJ-
214 PM EDT Sat Apr 15 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SUSSEX COUNTY
WILL EXPIRE AT 215 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

LAT...LON 4135 7468 4127 7451 4118 7457 4120 7476
      4134 7477 4135 7475 4135 7472 4136 7469
TIME...MOT...LOC 1814Z 191DEG 11KT 4131 7463 

$$

MLB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 4:29 AM EDT	Marine Dense Fog Advisory	PHI		54 hr
Apr 15, 1:09 PM EDT	Special Weather Statement	PHI	Sussex	36 min
Apr 15, 1:34 PM EDT	Severe Thunderstorm Warning	PHI	Warren	26 min
Apr 15, 1:55 PM EDT	Areal Flood Advisory	PHI	Sussex	6 hr
Apr 15, 1:58 PM EDT	Severe Thunderstorm Warning	PHI	Warren	32 min
Apr 15, 2:06 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Somerset	6 hr
Apr 15, 3:28 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	3 hr
Apr 15, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	31 min
Apr 15, 3:58 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Apr 15, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	25 min
Apr 15, 4:19 PM EDT	Flash Flood Warning	PHI	Burlington, Camden	3 hr
Apr 15, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Somerset	26 min
Apr 15, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	14 min
Apr 15, 6:05 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Somerset	96 min
Apr 15, 6:32 PM EDT	Areal Flood Warning	PHI	Hunterdon	5 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.