Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 69, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2025, 2:44 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 31 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
- Jun 19, 2025, 2:44 PM EDT (18:44 UTC)
- Expired
- Jun 19, 2025, 3:15 PM EDT
- In force
- 31 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 87 km from the middle of the area, began a volume at 18:46 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 |
|---|---|---|---|
| Jun 19, 2:47 PM EDT | TSTM WND DMG | Harding, NJ | Multiple trees down on wires. Time estimated from radar. |
| Jun 19, 2:47 PM EDT | TSTM WND DMG | Harding, NJ | Tree on vehicle. Time estimated from radar. |
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 |
|---|---|---|---|
| Jun 19, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.7 hours before the alert went out and 132 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.
- Mixed-layer CAPE
- 14 J/kg
- Mixed-layer CIN
- -197 J/kg
- Mixed-layer LCL
- 907 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
665
WUUS51 KPHI 191844
SVRPHI
NJC027-035-191915-
/O.NEW.KPHI.SV.W.0069.250619T1844Z-250619T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
244 PM EDT Thu Jun 19 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Morris County in northern New Jersey...
Northeastern Somerset County in northern New Jersey...
* Until 315 PM EDT.
* At 243 PM EDT, a severe thunderstorm was located over Millington,
or 7 miles south of Morristown, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Morristown, Madison, Florham Park, East Hanover, Chatham, Mendham,
Peapack And Gladstone, Far Hills, Martinsville, Millington, Basking
Ridge, Bernardsville, Watchung, and Hanover Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
&&
LAT...LON 4082 7434 4079 7437 4076 7438 4075 7436
4074 7437 4067 7446 4066 7445 4066 7440
4063 7442 4060 7456 4075 7465 4086 7432
TIME...MOT...LOC 1843Z 250DEG 26KT 4069 7452
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS2 follow-up statements
407
WWUS51 KPHI 191854
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
254 PM EDT Thu Jun 19 2025
NJC035-191903-
/O.CAN.KPHI.SV.W.0069.000000T0000Z-250619T1915Z/
Somerset NJ-
254 PM EDT Thu Jun 19 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SOMERSET COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern New Jersey.
LAT...LON 4082 7434 4079 7437 4076 7438 4075 7436
4067 7446 4066 7451 4069 7452 4070 7451
4071 7452 4077 7454 4085 7433
TIME...MOT...LOC 1853Z 255DEG 23KT 4072 7446
$$
NJC027-191915-
/O.CON.KPHI.SV.W.0069.000000T0000Z-250619T1915Z/
Morris NJ-
254 PM EDT Thu Jun 19 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHEASTERN MORRIS COUNTY...
At 253 PM EDT, a severe thunderstorm was located near Madison, or
near Summit, moving east at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Morristown, Madison, Florham Park, East Hanover, and Chatham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
&&
LAT...LON 4082 7434 4079 7437 4076 7438 4075 7436
4067 7446 4066 7451 4069 7452 4070 7451
4071 7452 4077 7454 4085 7433
TIME...MOT...LOC 1853Z 255DEG 23KT 4072 7446
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS917
WWUS51 KPHI 191905
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
305 PM EDT Thu Jun 19 2025
NJC027-191915-
/O.EXP.KPHI.SV.W.0069.000000T0000Z-250619T1915Z/
Morris NJ-
305 PM EDT Thu Jun 19 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRIS COUNTY
WILL EXPIRE AT 315 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern New Jersey.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4082 7434 4079 7437 4076 7438 4075 7436
4067 7446 4066 7451 4069 7452 4070 7451
4071 7452 4077 7454 4085 7433
TIME...MOT...LOC 1905Z 250DEG 26KT 4075 7436
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 2:27 PM EDT | Small Craft Advisory | PHI | 16 hr | |
| Jun 19, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 46 min |
| Jun 19, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 29 min |
| Jun 19, 4:48 PM EDT | Special Marine Warning | PHI | 42 min | |
| Jun 19, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 47 min |
| Jun 19, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 52 min |
| Jun 19, 5:27 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jun 19, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer | 50 min |
| Jun 19, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 49 min |
| Jun 19, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 39 min |
| Jun 19, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 31 min |
| Jun 19, 6:34 PM EDT | Special Marine Warning | PHI | 56 min | |
| Jun 19, 6:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jun 19, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 50 min |
| Jun 19, 7:02 PM EDT | Special Marine Warning | PHI | 43 min | |
| Jun 19, 7:06 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 19, 7:22 PM EDT | Special Marine Warning | PHI | 53 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2025Every severe thunderstorm warning in 2025
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.