Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 70, NWS Philadelphia/Mount Holly

June 11, 2026Morris County, Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 11, 2026, 10:02 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 43 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 11, 2026, 10:02 PM EDT (02:02 UTC)
Expired: Jun 11, 2026, 10:45 PM EDT
In force: 43 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, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 02:06 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 11, 10:10 PM EDT	TSTM WND DMG	4 Nnw Pellettown, NJ	Trees down near Thomas Lane. Time estimated by radar.
Jun 11, 10:15 PM EDT	TSTM WND DMG	2 Wnw Wantage Twp, NJ	Downed trees near the intersection of Libertyville Rd and County Road 519. Time estimated by 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 11, 7:14 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.0 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.

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: 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

Open this sounding in Storm Lab

The text

As transmitted.

002 
WUUS51 KPHI 120202
SVRPHI
NJC027-037-041-120245-
/O.NEW.KPHI.SV.W.0070.260612T0202Z-260612T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1002 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...
  Northeastern Warren 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 20 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 7481 4105 7492 4114 7492
      4127 7484 4135 7475 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

$$

Hoeflich

3 follow-up statements

783 
WWUS51 KPHI 120219
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1019 PM EDT Thu Jun 11 2026

NJC041-120229-
/O.CAN.KPHI.SV.W.0070.000000T0000Z-260612T0245Z/
Warren NJ-
1019 PM EDT Thu Jun 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WARREN 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 midnight EDT for
northern and northwestern New Jersey.

LAT...LON 4098 7478 4133 7464 4132 7461 4120 7437
      4110 7449 4104 7450 4105 7445 4102 7443
      4103 7442 4100 7430 4098 7430 4090 7433
      4090 7437 4091 7456
TIME...MOT...LOC 0219Z 287DEG 25KT 4105 7466 

$$

NJC027-037-120245-
/O.CON.KPHI.SV.W.0070.000000T0000Z-260612T0245Z/
Morris NJ-Sussex NJ-
1019 PM EDT Thu Jun 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHEASTERN MORRIS AND CENTRAL SUSSEX COUNTIES...

At 1019 PM EDT, a severe thunderstorm was located over Lake Mohawk,
or near Newton, 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...
Newton, Hopatcong, Kinnelon, Boonton, Butler, Rockaway, Mount
Arlington, Franklin, Mountain Lakes, Riverdale, Hamburg, Ogdensburg,
Sussex, Andover, Lake Mohawk, Vernon Valley, Lake Telemark, Green
Pond, Pellettown, and Highland Lake.

This includes the following highways...
 Interstate 80 in New Jersey between mile markers 35 and 37.
 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 4098 7478 4133 7464 4132 7461 4120 7437
      4110 7449 4104 7450 4105 7445 4102 7443
      4103 7442 4100 7430 4098 7430 4090 7433
      4090 7437 4091 7456
TIME...MOT...LOC 0219Z 287DEG 25KT 4105 7466 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

673 
WWUS51 KPHI 120234 RRA
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.0070.000000T0000Z-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 Green Pond, or
8 miles southwest of West Milford, 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...
Kinnelon, Butler, Franklin, Riverdale, Ogdensburg, Lake Telemark,
Green Pond, Highland Lake, and White Meadow Lake.

This includes Interstate 287 in New Jersey between mile markers 48
and 54.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4094 7461 4112 7464 4117 7441 4110 7449
      4104 7450 4105 7445 4102 7443 4103 7442
      4100 7430 4098 7430 4092 7432
TIME...MOT...LOC 0234Z 264DEG 24KT 4104 7453 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

805 
WWUS51 KPHI 120236
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.0070.000000T0000Z-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 4094 7461 4112 7464 4117 7441 4110 7449
      4104 7450 4105 7445 4102 7443 4103 7442
      4100 7430 4098 7430 4092 7432
TIME...MOT...LOC 0236Z 271DEG 36KT 4104 7456 

$$

Hoeflich

The 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, 10:18 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	27 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, 2026 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.