Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 56, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 6, 2026, 6:13 PM EDT for 6 counties in New Jersey; 4 counties in Pennsylvania. It was in force for 47 min. 15 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 6, 2026, 6:13 PM EDT (22:13 UTC)
- Expired
- Jun 6, 2026, 7:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 115 km from the middle of the area, began a volume at 22:13 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 6, 6:15 PM EDT | TSTM WND DMG | 2 Nnw Easton, PA | Large branches were blown down. |
| Jun 6, 6:30 PM EDT | TSTM WND DMG | Washington, NJ | Several wires and poles blown down. Time estimated from radar. |
| Jun 6, 6:30 PM EDT | TSTM WND GST 52 | 1 Ene Pohatcong Twp, NJ | NJWXNET Stewartsville. |
| Jun 6, 6:35 PM EDT | TSTM WND DMG | Washington, NJ | Large tree and wires blown down. Time estimated from radar. |
| Jun 6, 6:49 PM EDT | TSTM WND DMG | 2 Nw Schooleys Mountain, NJ | NJ DOT - STMC: Downed Wires on NJ 57 Westbound West of Allen Rd/Newburg Rd (Mansfield Twp), All lanes closed. Time estimated. |
| Jun 6, 6:54 PM EDT | TSTM WND DMG | Washington, NJ | Multiple reports of trees and wires down in Washington. Time estimated. |
| Jun 6, 6:57 PM EDT | TSTM WND DMG | 2 Se Oldwick, NJ | NJ DOT - STMC: Downed Tree on I-78 Eastbound West of Exit 26 - CR 665/Rattlesnake Bridge Rd (Readington Twp), 1 right lane of 3 lanes closed. Time estimated from radar. |
| Jun 6, 7:02 PM EDT | TSTM WND DMG | 1 Wnw Denville, NJ | NJ DOT - STMC: Downed Tree on NJ 10 Eastbound At In the vicinity of Mount Pleasant Tpke (Denville Twp), 2 right lanes of 3 lanes closed. Time estimated. |
| Jun 6, 7:04 PM EDT | TSTM WND GST 44 | 1 N Readington, NJ | AWOS station N519 Readington. |
| Jun 6, 7:05 PM EDT | TSTM WND DMG | 1 W Mountain Lakes, NJ | Pictures and a video received of several full sized mature oak trees blown down in Denville near the border with Mountain Lakes. Time estimated from radar. |
| Jun 6, 7:05 PM EDT | TSTM WND DMG | Boonton, NJ | Multiple trees and branches blown down in the Boonton and Mountain Lakes area. Time estimated from radar. |
| Jun 6, 7:05 PM EDT | TSTM WND DMG | Bridgewater, NJ | Multiple reports of trees down around Bridgewater. Time estimated from radar. |
| Jun 6, 7:06 PM EDT | TSTM WND DMG | Montville, NJ | Delayed report... Spotter sent in photos of several uprooted trees, one falling onto a house in the Montville area. Time estimated. |
| Jun 6, 7:07 PM EDT | TSTM WND DMG | 1 Ne Montville, NJ | NJ DOT - STMC: Downed Tree on I-287 Southbound North of Exit 47 - US 202 (Montville Twp), 2 right lanes of 3 lanes closed. Time estimated. |
| Jun 6, 7:10 PM EDT | TSTM WND DMG | Montville Twp, NJ | Several trees uprooted along Cheryl Road. 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 |
|---|---|---|---|
| Jun 6, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.2 hours before the alert went out and 148 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
- 1811 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
191
WUUS51 KPHI 062213
SVRPHI
NJC019-023-027-035-037-041-PAC017-077-089-095-062300-
/O.NEW.KPHI.SV.W.0056.260606T2213Z-260606T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
613 PM EDT Sat Jun 6 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Hunterdon County in northwestern New Jersey...
Morris County in northern New Jersey...
Sussex County in northwestern New Jersey...
Warren County in northwestern New Jersey...
Somerset County in northern New Jersey...
North central Middlesex County in northern New Jersey...
East central Lehigh County in eastern Pennsylvania...
North central Bucks County in southeastern Pennsylvania...
East central Monroe County in northeastern Pennsylvania...
Eastern Northampton County in eastern Pennsylvania...
* Until 700 PM EDT.
* At 613 PM EDT, severe thunderstorms were located along a line
extending from near Skytop to Pen Argyl to near Lehigh University,
moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Easton, Morristown, Somerville, Newton, Somerset, Bethlehem,
Bridgewater, Dover, Madison, Hopatcong, Forks, Middlesex, Florham
Park, East Hanover, Lincoln Park, Bound Brook, Manville, Kinnelon,
Hackettstown, and Chatham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4120 7436 4110 7449 4104 7450 4105 7445
4102 7443 4100 7430 4090 7427 4091 7434
4075 7436 4067 7446 4065 7440 4047 7449
4053 7547 4085 7522 4113 7507 4108 7503
4116 7490 4135 7475 4136 7469
TIME...MOT...LOC 2213Z 268DEG 49KT 4120 7516 4088 7525 4060 7542
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cooper2 follow-up statements
830
WWUS51 KPHI 062239
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
639 PM EDT Sat Jun 6 2026
NJC019-023-027-035-037-041-PAC017-077-089-095-062300-
/O.CON.KPHI.SV.W.0056.000000T0000Z-260606T2300Z/
Hunterdon NJ-Morris NJ-Sussex NJ-Warren NJ-Somerset NJ-Middlesex NJ-
Lehigh PA-Bucks PA-Monroe PA-Northampton PA-
639 PM EDT Sat Jun 6 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR HUNTERDON...MORRIS...SUSSEX...WARREN...SOMERSET...NORTH CENTRAL
MIDDLESEX...EAST CENTRAL LEHIGH...NORTH CENTRAL BUCKS...EAST CENTRAL
MONROE AND EASTERN NORTHAMPTON COUNTIES...
At 639 PM EDT, severe thunderstorms were located along a line
extending from near Pellettown to Allamuchy-Panther Valley to near
Clinton, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. At 615 PM, tree damage was
reported near Easton PA.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Easton, Morristown, Somerville, Newton, Somerset, Bethlehem,
Bridgewater, Dover, Madison, Hopatcong, Forks, Middlesex, Florham
Park, East Hanover, Lincoln Park, Bound Brook, Manville, Kinnelon,
Hackettstown, and Chatham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4120 7436 4110 7449 4104 7450 4105 7445
4102 7443 4100 7430 4090 7427 4091 7434
4075 7436 4067 7446 4065 7440 4047 7449
4053 7547 4085 7522 4113 7507 4108 7503
4116 7490 4135 7475 4136 7469
TIME...MOT...LOC 2239Z 268DEG 49KT 4121 7471 4089 7481 4061 7498
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
Cooper525
WWUS51 KPHI 062301
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
701 PM EDT Sat Jun 6 2026
NJC019-023-027-035-037-041-PAC017-077-089-095-062311-
/O.EXP.KPHI.SV.W.0056.000000T0000Z-260606T2300Z/
Hunterdon NJ-Morris NJ-Sussex NJ-Warren NJ-Somerset NJ-Middlesex NJ-
Lehigh PA-Bucks PA-Monroe PA-Northampton PA-
701 PM EDT Sat Jun 6 2026
...THE SEVERE THUNDERSTORM WARNING FOR HUNTERDON...MORRIS...SUSSEX...
WARREN...SOMERSET...NORTH CENTRAL MIDDLESEX...EAST CENTRAL LEHIGH...
NORTH CENTRAL BUCKS...EAST CENTRAL MONROE AND EASTERN NORTHAMPTON
COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northern and northwestern New Jersey...and eastern, southeastern and
northeastern Pennsylvania.
LAT...LON 4120 7436 4110 7449 4104 7450 4105 7445
4102 7443 4100 7430 4090 7427 4091 7434
4075 7436 4067 7446 4065 7440 4047 7449
4053 7547 4085 7522 4113 7507 4108 7503
4116 7490 4135 7475 4136 7469
TIME...MOT...LOC 2301Z 270DEG 49KT 4122 7434 4090 7444 4062 7461
$$
CooperThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 67 min |
| Jun 6, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset | 58 min |
| Jun 6, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset, Sussex and 1 more | 61 min |
| Jun 6, 7:03 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jun 6, 7:05 PM EDT | Special Marine Warning | PHI | 115 min | |
| Jun 6, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 2 more | 41 min |
| Jun 6, 7:36 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 6, 7:55 PM EDT | Special Marine Warning | PHI | 35 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2026Severe Thunderstorm Warnings in Pennsylvania, 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.