Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 266, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2026, 7:06 PM EDT for 5 counties in New Jersey; 4 counties in Pennsylvania. It was in force for 54 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
- Jul 28, 2026, 7:06 PM EDT (23:06 UTC)
- Expired
- Jul 28, 2026, 8:00 PM EDT
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 23:08 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 |
|---|---|---|---|
| Jul 28, 7:25 PM EDT | TSTM WND DMG | Phoenixville, PA | Tree down on Road at 150 Paradise Street. 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 |
|---|---|---|---|
| Jul 28, 12:51 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 28, 4:20 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.1 hours before the alert went out and 217 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
- 710 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 968 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted.
657
WUUS51 KPHI 282306
SVRPHI
NJC005-007-011-015-033-PAC029-045-091-101-290000-
/O.NEW.KPHI.SV.W.0266.260728T2306Z-260729T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
706 PM EDT Tue Jul 28 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Cumberland County in southern New Jersey...
Salem County in southern New Jersey...
Camden County in southern New Jersey...
Gloucester County in southern New Jersey...
Northwestern Burlington County in southern New Jersey...
Southeastern Montgomery County in southeastern Pennsylvania...
Northeastern Chester County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until 800 PM EDT.
* At 706 PM EDT, severe thunderstorms were located along a line
extending from near Downingtown to near Chester to Salem, moving
northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Camden, Wilmington, Vineland, West Chester,
Gloucester City, Cherry Hill, Evesham, Mount Laurel, Norristown,
Chester, Willingboro, Deptford, Voorhees, Medford, West Deptford,
Glassboro, Lindenwold, Phoenixville, and Lansdale.
This includes the following highways...
New Jersey Turnpike between exits 1 and 5.
Pennsylvania Turnpike between mile markers 310 and 346.
Northeast Extension between mile markers 21 and 29.
Interstate 95 in Pennsylvania between mile markers 1 and 33.
Interstate 76 in Pennsylvania between mile markers 327 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 1 and 47.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 476 in Pennsylvania between mile markers 0 and 19.
Atlantic City Expressway between mile markers 30 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for northern
Delaware...southern New Jersey...and southeastern Pennsylvania.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
A Tornado Watch remains in effect until 1000 PM EDT for northern
Delaware...southern New Jersey...and southeastern Pennsylvania.
&&
LAT...LON 4028 7526 4011 7496 4008 7496 4006 7498
4005 7497 4007 7490 4003 7482 3972 7475
3951 7499 3943 7551 3971 7549 3977 7546
3980 7541 3983 7546 3984 7556 4004 7581
TIME...MOT...LOC 2306Z 244DEG 28KT 4001 7565 3981 7539 3957 7547
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL2 follow-up statements
212
WWUS51 KPHI 282349
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
749 PM EDT Tue Jul 28 2026
PAC029-282359-
/O.CAN.KPHI.SV.W.0266.000000T0000Z-260729T0000Z/
Chester PA-
749 PM EDT Tue Jul 28 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHESTER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey...and southeastern Pennsylvania.
LAT...LON 4011 7496 4008 7496 4006 7498 4005 7497
4007 7490 4003 7482 3972 7475 3951 7499
3947 7529 3965 7526 3983 7532 3992 7544
4019 7510
TIME...MOT...LOC 2349Z 244DEG 28KT 4016 7526 3996 7500 3972 7508
$$
NJC005-007-011-015-033-PAC045-091-101-290000-
/O.CON.KPHI.SV.W.0266.000000T0000Z-260729T0000Z/
Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
Montgomery PA-Philadelphia PA-Delaware PA-
749 PM EDT Tue Jul 28 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTH CENTRAL CUMBERLAND...EAST CENTRAL SALEM...CAMDEN...
GLOUCESTER...NORTHWESTERN BURLINGTON...SOUTHEASTERN MONTGOMERY...
PHILADELPHIA AND EASTERN DELAWARE COUNTIES...
At 749 PM EDT, severe thunderstorms were located along a line
extending from near Ambler to Cherry Hill Mall to Glassboro, moving
northeast 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...
Philadelphia, Camden, Vineland, Gloucester City, Cherry Hill,
Evesham, Mount Laurel, Chester, Willingboro, Deptford, Voorhees,
Medford, West Deptford, Glassboro, Lindenwold, Bellmawr, Yeadon,
Woodbury, Pitman, and Clayton.
This includes the following highways...
New Jersey Turnpike between exits 2 and 5.
Pennsylvania Turnpike between mile markers 341 and 346.
Interstate 95 in Pennsylvania between mile markers 6 and 33.
Interstate 76 in Pennsylvania between mile markers 335 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 15 and 47.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 476 in Pennsylvania between mile markers 0 and 9.
Atlantic City Expressway between mile markers 30 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey...and southeastern Pennsylvania.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4011 7496 4008 7496 4006 7498 4005 7497
4007 7490 4003 7482 3972 7475 3951 7499
3947 7529 3965 7526 3983 7532 3992 7544
4019 7510
TIME...MOT...LOC 2349Z 244DEG 28KT 4016 7526 3996 7500 3972 7508
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL137
WWUS51 KPHI 282355
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
755 PM EDT Tue Jul 28 2026
NJC005-007-011-015-033-PAC045-091-101-290004-
/O.EXP.KPHI.SV.W.0266.000000T0000Z-260729T0000Z/
Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
Montgomery PA-Philadelphia PA-Delaware PA-
755 PM EDT Tue Jul 28 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CUMBERLAND...
EAST CENTRAL SALEM...CAMDEN...GLOUCESTER...NORTHWESTERN BURLINGTON...
SOUTHEASTERN MONTGOMERY...PHILADELPHIA AND EASTERN DELAWARE COUNTIES
WILL EXPIRE AT 800 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with these thunderstorms.
A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey...and southeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4011 7496 4008 7496 4006 7498 4005 7497
4007 7490 4003 7482 3972 7475 3951 7499
3947 7529 3965 7526 3983 7532 3992 7544
4019 7510
TIME...MOT...LOC 2354Z 244DEG 28KT 4017 7523 3997 7497 3973 7505
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 1:22 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 38 min |
| Jul 28, 1:31 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Warren | 44 min |
| Jul 28, 1:49 PM EDT | Tornado Warning | PHI | Sussex, Warren | 26 min |
| Jul 28, 2:04 PM EDT | Flash Flood Warning | PHI | Warren | 10 hr |
| Jul 28, 2:11 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Somerset | 4 hr |
| Jul 28, 2:15 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 45 min |
| Jul 28, 2:45 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Warren | 9 hr |
| Jul 28, 2:56 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex | 49 min |
| Jul 28, 3:04 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 41 min |
| Jul 28, 3:43 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 23 min |
| Jul 28, 4:02 PM EDT | Flash Flood Warning | PHI | Middlesex | 2 hr |
| Jul 28, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon | 34 min |
| Jul 28, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 43 min |
| Jul 28, 6:10 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 28, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 25 min |
| Jul 28, 6:17 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 6 hr |
| Jul 28, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 67 min |
| Jul 28, 6:46 PM EDT | Tornado Warning | PHI | Gloucester, Salem | 29 min |
| Jul 28, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 50 min |
| Jul 28, 7:11 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester, Salem | 3 hr |
| Jul 28, 7:23 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 28, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Salem | 23 min |
| Jul 28, 7:55 PM EDT | Flash Flood Warning | PHI | Hunterdon | 4 hr |
| Jul 27, 8:01 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 23 min |
| Jul 28, 1:02 PM EDT | Flash Flood Warning | PHI | Lehigh, Monroe, Northampton | 4 hr |
| Jul 28, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 15 min |
| Jul 28, 5:29 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 61 min |
| Jul 28, 5:55 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jul 28, 6:16 PM EDT | Tornado Warning | PHI | Chester | 29 min |
| Jul 28, 6:56 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 5 hr |
| Jul 28, 7:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 35 min |
| Jul 28, 7:24 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 28, 7:31 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 44 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.