Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 11, 2026, 8:36 PM EDT for 4 counties in New Jersey. It was in force for 39 min. 4 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
- Mar 11, 2026, 8:36 PM EDT (00:36 UTC)
- Expired
- Mar 11, 2026, 9:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 93 km from the middle of the area, began a volume at 00:37 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 |
|---|---|---|---|
| Mar 11, 8:55 PM EDT | TSTM WND DMG | 1 Se Chester, NJ | Trees and wires down in Chester Township. Time estimated from radar. |
| Mar 11, 8:57 PM EDT | TSTM WND DMG | 2 Ssw Wharton, NJ | Trees and wires down in Mine Hill. Time estimated from radar. |
| Mar 11, 9:04 PM EDT | TSTM WND DMG | Mendham, NJ | Trees and wires down in Mendham. Time estimated from radar. |
| Mar 11, 9:09 PM EDT | TSTM WND DMG | New Vernon, NJ | Trees and wires down in Harding Township. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.6 hours before the alert went out and 142 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
- 980 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 413 m²/s²
- 0-3 km storm-relative helicity
- 386 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
613
WUUS51 KPHI 120036
SVRPHI
NJC019-027-035-041-120115-
/O.NEW.KPHI.SV.W.0005.260312T0036Z-260312T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
836 PM EDT Wed Mar 11 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Morris County in northern New Jersey...
Northern Hunterdon County in northwestern New Jersey...
Southern Warren County in northwestern New Jersey...
Northern Somerset County in northern New Jersey...
* Until 915 PM EDT.
* At 836 PM EDT, a severe thunderstorm was located near Bloomsbury,
or 11 miles southeast of Easton, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Morristown, Dover, Madison, Florham Park, East Hanover,
Hackettstown, Chatham, Boonton, Wharton, Washington, Rockaway,
Morris Plains, Mount Arlington, Mendham, Mountain Lakes, High
Bridge, Netcong, Clinton, Peapack And Gladstone, and Oxford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4079 7437 4076 7438 4075 7436 4074 7437
4068 7445 4066 7445 4054 7506 4074 7515
4092 7465 4093 7465 4100 7447 4082 7433
TIME...MOT...LOC 0036Z 254DEG 41KT 4062 7501
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
432
WWUS51 KPHI 120051
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
851 PM EDT Wed Mar 11 2026
NJC041-120100-
/O.CAN.KPHI.SV.W.0005.000000T0000Z-260312T0115Z/
Warren NJ-
851 PM EDT Wed Mar 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WARREN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4079 7437 4076 7438 4075 7436 4068 7445
4066 7446 4058 7486 4079 7489 4082 7483
4085 7482 4098 7445 4082 7434
TIME...MOT...LOC 0050Z 254DEG 41KT 4067 7480
$$
NJC019-027-035-120115-
/O.CON.KPHI.SV.W.0005.000000T0000Z-260312T0115Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
851 PM EDT Wed Mar 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR MORRIS...NORTHEASTERN HUNTERDON AND NORTHERN SOMERSET COUNTIES...
At 850 PM EDT, a severe thunderstorm was located over Lebanon, or 11
miles northwest of Somerville, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Morristown, Dover, Madison, Florham Park, East Hanover, Hackettstown,
Chatham, Boonton, Wharton, Rockaway, Morris Plains, Mount Arlington,
Mendham, Mountain Lakes, Peapack And Gladstone, Chester, Victory
Gardens, Lebanon, Califon, and Far Hills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4079 7437 4076 7438 4075 7436 4068 7445
4066 7446 4058 7486 4079 7489 4082 7483
4085 7482 4098 7445 4082 7434
TIME...MOT...LOC 0050Z 254DEG 41KT 4067 7480
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich839
WWUS51 KPHI 120106
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
906 PM EDT Wed Mar 11 2026
NJC019-027-035-120116-
/O.EXP.KPHI.SV.W.0005.000000T0000Z-260312T0115Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
906 PM EDT Wed Mar 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR MORRIS...NORTHEASTERN
HUNTERDON AND NORTHERN SOMERSET COUNTIES WILL EXPIRE AT 915 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
this thunderstorm.
LAT...LON 4079 7437 4076 7438 4075 7436 4068 7445
4066 7446 4058 7486 4079 7489 4082 7483
4085 7482 4098 7445 4082 7434
TIME...MOT...LOC 0106Z 254DEG 41KT 4072 7459
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 8:28 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Cumberland, Gloucester, Salem | 47 min |
| Mar 11, 8:58 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 47 min |
| Mar 11, 9:02 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 43 min |
| Mar 11, 9:16 PM EDT | Special Marine Warning | PHI | 86 min | |
| Mar 11, 9:57 PM EDT | Special Marine Warning | PHI | 44 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.