Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 71, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 11, 2026, 10:18 PM EDT for Morris County, Sussex County, New Jersey. It was in force for 27 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
- Jun 11, 2026, 10:18 PM EDT (02:18 UTC)
- Expired
- Jun 11, 2026, 10:45 PM EDT
- In force
- 27 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Morris County, NJ, Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 02:21 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 11, 7:14 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 2.3 hours before the alert went out and 144 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
- 783 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1469 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
578
WUUS51 KPHI 120218
SVRPHI
NJC027-037-120245-
/O.NEW.KPHI.SV.W.0071.260612T0218Z-260612T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1018 PM EDT Thu Jun 11 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Morris County in northern New Jersey...
Sussex County in northwestern New Jersey...
* Until 1045 PM EDT.
* At 1002 PM EDT, a severe thunderstorm was located over Branchville,
or near Newton, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Newton, Montague, Hopatcong, Lincoln Park, Kinnelon, Boonton,
Butler, Wharton, Rockaway, Mount Arlington, Franklin, Mountain
Lakes, Stanhope, Riverdale, Hamburg, Ogdensburg, Sussex,
Branchville, Andover, and High Point.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 23 and 24, and
between mile markers 33 and 38.
Interstate 287 in New Jersey between mile markers 45 and 54.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4120 7437 4110 7449 4104 7450 4105 7445
4102 7443 4103 7442 4100 7430 4092 7429
4090 7427 4091 7477 4104 7491 4114 7492
4127 7484 4134 7476 4136 7469
TIME...MOT...LOC 0202Z 271DEG 36KT 4111 7476
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
244
WWUS51 KPHI 120234
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1034 PM EDT Thu Jun 11 2026
NJC027-037-120245-
/O.CON.KPHI.SV.W.0071.000000T0000Z-260612T0245Z/
Morris NJ-Sussex NJ-
1034 PM EDT Thu Jun 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHEASTERN MORRIS AND SOUTHEASTERN SUSSEX COUNTIES...
At 1034 PM EDT, a severe thunderstorm was located near Ogdensburg, or
8 miles southwest of West Milford, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Hopatcong, Kinnelon, Boonton, Butler, Rockaway, Franklin, Mountain
Lakes, Hamburg, Ogdensburg, Lake Telemark, Green Pond, Lake Mohawk,
and White Meadow Lake.
This includes the following highways...
Interstate 80 in New Jersey near mile marker 38.
Interstate 287 in New Jersey between mile markers 45 and 46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4099 7467 4116 7459 4114 7444 4110 7449
4104 7450 4105 7445 4102 7443 4103 7442
4101 7433 4090 7438 4090 7449
TIME...MOT...LOC 0234Z 290DEG 19KT 4105 7454
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich176
WWUS51 KPHI 120236 RRA
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1036 PM EDT Thu Jun 11 2026
NJC027-037-120246-
/O.EXP.KPHI.SV.W.0071.000000T0000Z-260612T0245Z/
Morris NJ-Sussex NJ-
1036 PM EDT Thu Jun 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS AND
SOUTHEASTERN SUSSEX COUNTIES WILL EXPIRE AT 1045 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 midnight EDT for
northern and northwestern New Jersey.
LAT...LON 4099 7467 4116 7459 4114 7444 4110 7449
4104 7450 4105 7445 4102 7443 4103 7442
4101 7433 4090 7438 4090 7449
TIME...MOT...LOC 0236Z 271DEG 36KT 4104 7456
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 9:28 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 27 min |
| Jun 11, 9:44 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 16 min |
| Jun 11, 9:50 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jun 11, 10:02 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 43 min |
| Jun 11, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 39 min |
| Jun 11, 10:48 PM EDT | Special Marine Warning | PHI | 55 min | |
| Jun 11, 10:56 PM EDT | Special Marine Warning | PHI | 46 min | |
| Jun 12, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset | 52 min |
| Jun 12, 5:35 PM EDT | Special Marine Warning | PHI | 35 min | |
| Jun 12, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 26 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.