Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 241, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2026, 5:51 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 23 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 27, 2026, 5:51 PM EDT (21:51 UTC)
- Expired
- Jul 27, 2026, 6:14 PM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 139 km from the middle of the area, began a volume at 21:52 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 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
- 87 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
749
WUUS51 KPHI 272151
SVRPHI
PAC011-077-272230-
/O.NEW.KPHI.SV.W.0241.260727T2151Z-260727T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
551 PM EDT Mon Jul 27 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Berks County in eastern Pennsylvania...
West central Lehigh County in eastern Pennsylvania...
* Until 630 PM EDT.
* At 551 PM EDT, a severe thunderstorm was located near
Lenhartsville, or 13 miles north of Reading, moving east at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Kutztown, Fleetwood, Leesport, Shoemakersville, Lyons, and
Lenhartsville.
This includes Interstate 78 in Pennsylvania between mile markers 33
and 45.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4045 7598 4062 7595 4062 7572 4040 7577
TIME...MOT...LOC 2151Z 271DEG 8KT 4053 7586
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Guzzo1 follow-up statement
409 WWUS51 KPHI 272214 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 614 PM EDT Mon Jul 27 2026 PAC011-077-272224- /O.CAN.KPHI.SV.W.0241.000000T0000Z-260727T2230Z/ Berks PA-Lehigh PA- 614 PM EDT Mon Jul 27 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BERKS AND WEST CENTRAL LEHIGH COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. LAT...LON 4045 7598 4062 7595 4062 7572 4040 7577 TIME...MOT...LOC 2211Z 271DEG 8KT 4053 7579 $$ Guzzo
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:15 PM EDT | Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 38 hr |
| Jul 27, 2:57 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 48 min |
| Jul 27, 3:01 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 44 min |
| Jul 27, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 49 min |
| Jul 27, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 40 min |
| Jul 27, 3:58 PM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 3 hr |
| Jul 27, 5:25 PM EDT | Flash Flood Warning | PHI | Lehigh | 2 hr |
Nearby
Severe 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.