Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 172, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2026, 4:24 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 36 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, 2026, 4:24 PM EDT (20:24 UTC)
- Expired
- Jul 15, 2026, 5:00 PM EDT
- In force
- 36 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), 115 km from the middle of the area, began a volume at 20:27 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, 8.4 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
- 915 J/kg
- Mixed-layer CIN
- -362 J/kg
- Mixed-layer LCL
- 1305 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
929
WUUS51 KPHI 152024
SVRPHI
NJC027-037-152100-
/O.NEW.KPHI.SV.W.0172.260715T2024Z-260715T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
424 PM EDT Wed Jul 15 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Morris County in northern New Jersey...
Southeastern Sussex County in northwestern New Jersey...
* Until 500 PM EDT.
* At 424 PM EDT, a severe thunderstorm was located over Ogdensburg,
or 9 miles southwest of West Milford, moving southeast 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...
Hopatcong, Florham Park, East Hanover, Lincoln Park, Kinnelon,
Boonton, Butler, Rockaway, Franklin, Mountain Lakes, Riverdale,
Ogdensburg, Parsippany, Pequannock Township, Lake Telemark, Green
Pond, Lake Mohawk, White Meadow Lake, and Hanover Township.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 36 and 49.
Interstate 287 in New Jersey between mile markers 39 and 54.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4111 7448 4109 7450 4104 7450 4105 7445
4102 7443 4103 7442 4100 7430 4090 7427
4091 7434 4086 7432 4082 7434 4079 7437
4075 7436 4104 7468 4113 7453
TIME...MOT...LOC 2024Z 310DEG 31KT 4105 7456
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cooper1 follow-up statement
159
WWUS51 KPHI 152039
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
439 PM EDT Wed Jul 15 2026
NJC037-152048-
/O.CAN.KPHI.SV.W.0172.000000T0000Z-260715T2100Z/
Sussex NJ-
439 PM EDT Wed Jul 15 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SUSSEX COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4090 7427 4091 7434 4088 7434 4086 7432
4079 7437 4076 7437 4097 7461 4098 7462
4101 7459 4104 7444 4102 7443 4103 7442
4100 7430 4092 7429
TIME...MOT...LOC 2038Z 310DEG 31KT 4097 7443
$$
NJC027-152100-
/O.CON.KPHI.SV.W.0172.000000T0000Z-260715T2100Z/
Morris NJ-
439 PM EDT Wed Jul 15 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN MORRIS COUNTY...
At 438 PM EDT, a severe thunderstorm was located near Kinnelon, or 7
miles west of Pompton Lakes, moving southeast 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...
Florham Park, East Hanover, Lincoln Park, Kinnelon, Boonton, Butler,
Rockaway, Morris Plains, Mountain Lakes, Riverdale, Parsippany,
Pequannock Township, Lake Telemark, Green Pond, White Meadow Lake,
and Hanover Township.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 36 and 48.
Interstate 287 in New Jersey between mile markers 39 and 54.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4090 7427 4091 7434 4088 7434 4086 7432
4079 7437 4076 7437 4097 7461 4098 7462
4101 7459 4104 7444 4102 7443 4103 7442
4100 7430 4092 7429
TIME...MOT...LOC 2038Z 310DEG 31KT 4097 7443
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CooperThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset, Sussex, Warren | 25 min |
| Jul 15, 4:44 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 30 min |
| Jul 15, 4:59 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 31 min |
| Jul 15, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 33 min |
| Jul 15, 5:51 PM EDT | Special Marine Warning | PHI | 54 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2026Every severe thunderstorm warning in 2026
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.