Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 137, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2025, 4:02 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 43 min. 1 report 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
- Jul 3, 2025, 4:02 PM EDT (20:02 UTC)
- Expired
- Jul 3, 2025, 4:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Morris County, NJ, Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 20:03 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 |
|---|---|---|---|
| Jul 3, 4:13 PM EDT | TSTM WND DMG | 1 Nne Sparta, NJ | Trees and wires down in Sparta, NJ. 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 |
|---|---|---|---|
| Jul 3, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.0 hours before the alert went out and 131 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
253
WUUS51 KPHI 032002
SVRPHI
NJC027-037-032045-
/O.NEW.KPHI.SV.W.0137.250703T2002Z-250703T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
402 PM EDT Thu Jul 3 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Morris County in northern New Jersey...
Central Sussex County in northwestern New Jersey...
* Until 445 PM EDT.
* At 401 PM EDT, a severe thunderstorm was located over Ogdensburg,
or near Newton, moving east at 35 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...
Dover, Hopatcong, Lincoln Park, Kinnelon, Boonton, Butler, Wharton,
Rockaway, Mount Arlington, Franklin, Mountain Lakes, Stanhope,
Riverdale, Hamburg, Ogdensburg, Andover, Lake Mohawk, Pequannock
Township, Lake Telemark, and Green Pond.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 4120 7437 4110 7449 4104 7450 4106 7445
4102 7443 4103 7442 4100 7430 4097 7428
4092 7429 4090 7427 4091 7433 4086 7433
4094 7479 4120 7458
TIME...MOT...LOC 2001Z 279DEG 28KT 4107 7464
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse2 follow-up statements
271
WWUS51 KPHI 032019
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
419 PM EDT Thu Jul 3 2025
NJC027-037-032045-
/O.CON.KPHI.SV.W.0137.000000T0000Z-250703T2045Z/
Morris NJ-Sussex NJ-
419 PM EDT Thu Jul 3 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN MORRIS AND SOUTHEASTERN SUSSEX COUNTIES...
At 418 PM EDT, a severe thunderstorm was located over Green Pond, or
8 miles southwest of West Milford, moving east at 30 mph. This storm
has a history of producing wind damage in Sussex County.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Emergency management.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dover, Hopatcong, Lincoln Park, Kinnelon, Boonton, Butler, Wharton,
Rockaway, Mount Arlington, Franklin, Mountain Lakes, Riverdale,
Ogdensburg, Andover, Lake Mohawk, Pequannock Township, Lake Telemark,
Green Pond, Highland Lake, and White Meadow Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4105 7449 4103 7449 4105 7444 4102 7443
4101 7442 4102 7441 4099 7429 4097 7428
4092 7429 4090 7427 4091 7433 4086 7433
4094 7477 4112 7463 4118 7439 4110 7449
4104 7450
TIME...MOT...LOC 2018Z 283DEG 28KT 4102 7452
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse432
WWUS51 KPHI 032042
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
442 PM EDT Thu Jul 3 2025
NJC027-037-032052-
/O.EXP.KPHI.SV.W.0137.000000T0000Z-250703T2045Z/
Morris NJ-Sussex NJ-
442 PM EDT Thu Jul 3 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS AND
SOUTHEASTERN SUSSEX COUNTIES WILL EXPIRE AT 445 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 gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4105 7449 4103 7449 4105 7444 4102 7443
4101 7442 4102 7441 4099 7429 4097 7428
4092 7429 4090 7427 4091 7433 4086 7433
4094 7477 4112 7463 4118 7439 4110 7449
4104 7450
TIME...MOT...LOC 2042Z 279DEG 28KT 4099 7430
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 40 min |
| Jul 3, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 49 min |
| Jul 3, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 44 min |
| Jul 3, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 48 min |
| Jul 3, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 37 min |
| Jul 3, 6:11 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 4 hr |
| Jul 3, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset, Warren | 34 min |
| Jul 3, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 32 min |
| Jul 3, 6:48 PM EDT | Special Marine Warning | PHI | 87 min | |
| Jul 3, 7:55 PM EDT | Special Marine Warning | PHI | 95 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.