Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 274, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2026, 2:38 PM EDT for Monroe County, Pennsylvania; Sussex County, New Jersey. It was in force for 50 min. 1 report 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
- Aug 7, 2026, 2:38 PM EDT (18:38 UTC)
- Expired
- Aug 7, 2026, 3:28 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Sussex County, NJ, Monroe County, PA
The radar
The Binghamton radar (KBGM), 142 km from the middle of the area, began a volume at 18:38 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 |
|---|---|---|---|
| Aug 7, 2:56 PM EDT | TSTM WND DMG | 2 Ne Montague, NJ | Trees and wires down. 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 |
|---|---|---|---|
| Aug 7, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.6 hours before the alert went out and 175 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
- 2423 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
The text
As transmitted.
817
WUUS51 KPHI 071838
SVRPHI
NJC037-PAC089-071945-
/O.NEW.KPHI.SV.W.0274.260807T1838Z-260807T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
238 PM EDT Fri Aug 7 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Sussex County in northwestern New Jersey...
Northeastern Monroe County in northeastern Pennsylvania...
* Until 345 PM EDT.
* At 238 PM EDT, a severe thunderstorm was located near Dingmans
Ferry, or 12 miles southwest of Montague, moving northeast at 20
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Montague, Sussex, Vernon Valley, High Point, Hainesville, and
Crandon Lakes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to hail and damaging winds, frequent cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4121 7438 4109 7517 4115 7516 4115 7515
4125 7514 4125 7513 4120 7514 4113 7496
4113 7494 4118 7488 4124 7486 4129 7483
4135 7475 4136 7470
TIME...MOT...LOC 1838Z 246DEG 19KT 4121 7500
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse4 follow-up statements
881
WWUS51 KPHI 071855
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
255 PM EDT Fri Aug 7 2026
PAC089-071905-
/O.CAN.KPHI.SV.W.0274.000000T0000Z-260807T1945Z/
Monroe PA-
255 PM EDT Fri Aug 7 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONROE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northwestern New Jersey.
LAT...LON 4121 7438 4113 7494 4118 7488 4124 7486
4129 7483 4135 7475 4136 7470
TIME...MOT...LOC 1855Z 259DEG 22KT 4124 7481
$$
NJC037-071945-
/O.CON.KPHI.SV.W.0274.000000T0000Z-260807T1945Z/
Sussex NJ-
255 PM EDT Fri Aug 7 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHERN SUSSEX COUNTY...
At 255 PM EDT, a severe thunderstorm was located over Hainesville, or
near Montague, moving east at 25 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Montague, Sussex, Vernon Valley, High Point, and Hainesville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4121 7438 4113 7494 4118 7488 4124 7486
4129 7483 4135 7475 4136 7470
TIME...MOT...LOC 1855Z 259DEG 22KT 4124 7481
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse851
WWUS51 KPHI 071902
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
302 PM EDT Fri Aug 7 2026
NJC037-071945-
/O.CON.KPHI.SV.W.0274.000000T0000Z-260807T1945Z/
Sussex NJ-
302 PM EDT Fri Aug 7 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHERN SUSSEX COUNTY...
At 302 PM EDT, a severe thunderstorm was located over Hainesville, or
near Montague, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Montague, Sussex, Vernon Valley, High Point, and Hainesville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4121 7438 4118 7488 4124 7486 4129 7483
4135 7475 4136 7470
TIME...MOT...LOC 1902Z 246DEG 19KT 4126 7476
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse751
WWUS51 KPHI 071917
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
317 PM EDT Fri Aug 7 2026
NJC037-071945-
/O.CON.KPHI.SV.W.0274.000000T0000Z-260807T1945Z/
Sussex NJ-
317 PM EDT Fri Aug 7 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHEASTERN SUSSEX COUNTY...
At 317 PM EDT, a severe thunderstorm was located over High Point, or
near Matamoras, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Montague, Vernon Valley, and High Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4121 7438 4124 7470 4130 7482 4135 7475
4136 7470
TIME...MOT...LOC 1917Z 245DEG 19KT 4129 7464
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse800
WWUS51 KPHI 071928
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
328 PM EDT Fri Aug 7 2026
NJC037-071937-
/O.CAN.KPHI.SV.W.0274.000000T0000Z-260807T1945Z/
Sussex NJ-
328 PM EDT Fri Aug 7 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SUSSEX COUNTY IS
CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northwestern New Jersey.
LAT...LON 4121 7438 4124 7470 4130 7482 4135 7475
4136 7470
TIME...MOT...LOC 1925Z 246DEG 19KT 4131 7457
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:53 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 67 min |
| Aug 7, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 62 min |
| Aug 7, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 44 min |
| Aug 7, 3:25 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 7, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 65 min |
| Aug 7, 3:37 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 3 hr |
| Aug 7, 4:04 PM EDT | Flash Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 2 hr |
| Aug 7, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Monroe, Northampton | 54 min |
| Aug 7, 4:24 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 4 hr |
| Aug 7, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 55 min |
| Aug 7, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 64 min |
| Aug 7, 5:01 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 3 hr |
| Aug 7, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 44 min |
| Aug 7, 5:34 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Aug 7, 7:19 PM EDT | Areal Flood Warning | PHI | Monroe, Northampton | 4 hr |
| Aug 7, 4:42 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 25 min |
| Aug 7, 4:43 PM EDT | Special Marine Warning | PHI | 48 min | |
| Aug 7, 4:56 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Sussex, Warren | 3 hr |
| Aug 7, 5:18 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex | 3 hr |
| Aug 7, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 50 min |
| Aug 7, 5:42 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Morris, Somerset | 3 hr |
| Aug 7, 5:45 PM EDT | Special Marine Warning | PHI | 60 min | |
| Aug 7, 5:48 PM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 7, 6:37 PM EDT | Special Marine Warning | PHI | 53 min | |
| Aug 7, 6:39 PM EDT | Flash Flood Warning | PHI | Monmouth | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2026Severe 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.