Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 177, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2026, 5:27 PM EDT for Warren County, New Jersey; 5 counties in Pennsylvania. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2026, 5:27 PM EDT (21:27 UTC)
- Expired
- Jul 15, 2026, 6:00 PM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Warren County, NJ, Bucks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 21:30 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 221 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
- 915 J/kg
- Mixed-layer CIN
- -362 J/kg
- Mixed-layer LCL
- 1305 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
969
WUUS51 KPHI 152127
SVRPHI
NJC041-PAC017-025-077-089-095-152200-
/O.NEW.KPHI.SV.W.0177.260715T2127Z-260715T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
527 PM EDT Wed Jul 15 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Warren County in northwestern New Jersey...
Northeastern Lehigh County in eastern Pennsylvania...
Southeastern Carbon County in northeastern Pennsylvania...
Northwestern Bucks County in southeastern Pennsylvania...
Southwestern Monroe County in northeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 600 PM EDT.
* At 527 PM EDT, a severe thunderstorm was located over Palmerton, or
near Lehighton, moving southeast at 45 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...
Allentown, Easton, Bethlehem, Forks, Northampton, Wilson,
Hellertown, Nazareth, Palmerton, Slatington, Bath, Harmony,
Walnutport, Belfast, West Easton, Tatamy, Steuben, Glendon,
Kunkletown, and Berlinsville.
This includes the following highways...
Northeast Extension between mile markers 65 and 74.
Interstate 78 in Pennsylvania between mile markers 62 and 76.
Interstate 78 in New Jersey near mile marker 0.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4079 7573 4092 7554 4074 7510 4049 7535
TIME...MOT...LOC 2127Z 312DEG 40KT 4081 7559
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cooper2 follow-up statements
316
WWUS51 KPHI 152138
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
538 PM EDT Wed Jul 15 2026
PAC025-152147-
/O.CAN.KPHI.SV.W.0177.000000T0000Z-260715T2200Z/
Carbon PA-
538 PM EDT Wed Jul 15 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CARBON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4074 7510 4049 7535 4074 7566 4081 7552
4081 7548 4083 7548 4086 7543
TIME...MOT...LOC 2137Z 312DEG 40KT 4073 7547
$$
NJC041-PAC017-077-089-095-152200-
/O.CON.KPHI.SV.W.0177.000000T0000Z-260715T2200Z/
Warren NJ-Lehigh PA-Bucks PA-Monroe PA-Northampton PA-
538 PM EDT Wed Jul 15 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHWESTERN WARREN...NORTHEASTERN LEHIGH...NORTHWESTERN BUCKS...
SOUTH CENTRAL MONROE AND NORTHAMPTON COUNTIES...
At 537 PM EDT, a severe thunderstorm was located over Beersville, or
9 miles north of Allentown, moving southeast at 45 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...
Allentown, Easton, Bethlehem, Forks, Northampton, Wilson, Hellertown,
Nazareth, Slatington, Bath, Harmony, Walnutport, Belfast, West
Easton, Tatamy, Steuben, Glendon, Kunkletown, Berlinsville, and
Emerald.
This includes the following highways...
Northeast Extension between mile markers 65 and 69.
Interstate 78 in Pennsylvania between mile markers 62 and 76.
Interstate 78 in New Jersey near mile marker 0.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4074 7510 4049 7535 4074 7566 4081 7552
4081 7548 4083 7548 4086 7543
TIME...MOT...LOC 2137Z 312DEG 40KT 4073 7547
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Cooper856
WWUS51 KPHI 152157
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
557 PM EDT Wed Jul 15 2026
NJC041-PAC017-077-089-095-152207-
/O.EXP.KPHI.SV.W.0177.000000T0000Z-260715T2200Z/
Warren NJ-Lehigh PA-Bucks PA-Monroe PA-Northampton PA-
557 PM EDT Wed Jul 15 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WARREN...
NORTHEASTERN LEHIGH...NORTHWESTERN BUCKS...SOUTH CENTRAL MONROE AND
NORTHAMPTON COUNTIES WILL EXPIRE AT 600 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 4074 7510 4049 7535 4074 7566 4081 7552
4081 7548 4083 7548 4086 7543
TIME...MOT...LOC 2157Z 312DEG 40KT 4059 7527
$$
CooperThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 36 min |
| Jul 15, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset, Sussex, Warren | 25 min |
| Jul 15, 4:44 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 30 min |
| Jul 15, 4:59 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 31 min |
| Jul 15, 5:51 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 15, 4:51 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 39 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.