Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 201, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 2025, 12:11 PM EDT for Berks County, Lehigh County, Montgomery County, Pennsylvania. It was in force for 64 min. 7 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
- Jul 31, 2025, 12:11 PM EDT (16:11 UTC)
- Expired
- Jul 31, 2025, 1:15 PM EDT
- In force
- 64 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, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 134 km from the middle of the area, began a volume at 16:13 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 |
|---|---|---|---|
| Jul 31, 12:23 PM EDT | TSTM WND DMG | 2 Sw Marion Twp, PA | Berks 911 call center reported a tree down on Conrad Weiser Pkwy. Time estimated from radar. |
| Jul 31, 12:30 PM EDT | TSTM WND DMG | 1 Ene Laureldale, PA | Multiple trees down on wires at the intersection of Elizabeth ave and chestnut street. Time estimated from radar. |
| Jul 31, 12:30 PM EDT | TSTM WND DMG | Muhlenberg Twp, PA | Trees and wires down. Time estimated from radar. |
| Jul 31, 12:33 PM EDT | TSTM WND DMG | Wyomissing, PA | Trees and wires down. Time estimated from radar. |
| Jul 31, 12:38 PM EDT | TSTM WND DMG | Reading, PA | Trees and wires down. Time estimated from radar. |
| Jul 31, 12:40 PM EDT | TSTM WND DMG | Mount Penn, PA | Tree down on wires. Time estimated from radar. |
| Jul 31, 12:42 PM EDT | TSTM WND DMG | Reiffton, PA | Tree branch through a house window. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 4.2 hours before the alert went out and 213 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
- 1355 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 875 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
431
WUUS51 KPHI 311611
SVRPHI
PAC011-077-091-311715-
/O.NEW.KPHI.SV.W.0201.250731T1611Z-250731T1715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1211 PM EDT Thu Jul 31 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Berks County in eastern Pennsylvania...
Central Lehigh County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
* Until 115 PM EDT.
* At 1211 PM EDT, a severe thunderstorm was located over Bernville,
or 10 miles northwest of Reading, moving east at 25 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...
Reading, Emmaus, Wyomissing, Kutztown, Hamburg, Fleetwood, Sinking
Spring, Laureldale, East Greenville, Womelsdorf, Wernersville,
Topton, Robesonia, Leesport, Shoemakersville, Bally, Bernville,
Bechtelsville, Lyons, and Strausstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4072 7560 4043 7547 4042 7548 4041 7547
4037 7545 4026 7607 4036 7621 4037 7623
4044 7635 4045 7635
TIME...MOT...LOC 1611Z 249DEG 20KT 4045 7607
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Deal3 follow-up statements
480
WWUS51 KPHI 311646
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1246 PM EDT Thu Jul 31 2025
PAC011-077-091-311715-
/O.CON.KPHI.SV.W.0201.000000T0000Z-250731T1715Z/
Berks PA-Lehigh PA-Montgomery PA-
1246 PM EDT Thu Jul 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR CENTRAL BERKS...SOUTH CENTRAL LEHIGH AND NORTHWESTERN MONTGOMERY
COUNTIES...
At 1245 PM EDT, a severe thunderstorm was located near Laureldale, or
near Reading, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Reading, Emmaus, Wyomissing, Kutztown, Fleetwood, Sinking Spring,
Laureldale, East Greenville, Womelsdorf, Wernersville, Topton,
Robesonia, Leesport, Shoemakersville, Bally, Bernville,
Bechtelsville, Lyons, Spring Ridge, and Zionsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4043 7633 4061 7555 4043 7547 4042 7548
4041 7547 4037 7545 4026 7607 4036 7621
4037 7623
TIME...MOT...LOC 1645Z 267DEG 20KT 4039 7584
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Deal652
WWUS51 KPHI 311704
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
104 PM EDT Thu Jul 31 2025
PAC011-077-091-311715-
/O.CON.KPHI.SV.W.0201.000000T0000Z-250731T1715Z/
Berks PA-Lehigh PA-Montgomery PA-
104 PM EDT Thu Jul 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR EAST CENTRAL BERKS...SOUTH CENTRAL LEHIGH AND NORTHWESTERN
MONTGOMERY COUNTIES...
At 104 PM EDT, a severe thunderstorm was located near Bechtelsville,
or 13 miles east of Reading, moving east at 25 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...
Reading, Emmaus, Wyomissing, Kutztown, Fleetwood, Laureldale, East
Greenville, Topton, Leesport, Bally, Bechtelsville, Lyons,
Zionsville, Ancient Oaks, Fairview Hgts, Geryville, Spring Ridge,
Shillington, West Reading, and Boyertown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4028 7595 4045 7602 4057 7553 4043 7547
4042 7548 4041 7547 4037 7545
TIME...MOT...LOC 1704Z 259DEG 24KT 4040 7568
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Deal589
WWUS51 KPHI 311717
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
117 PM EDT Thu Jul 31 2025
PAC011-077-091-311726-
/O.EXP.KPHI.SV.W.0201.000000T0000Z-250731T1715Z/
Berks PA-Lehigh PA-Montgomery PA-
117 PM EDT Thu Jul 31 2025
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BERKS...SOUTH
CENTRAL LEHIGH AND NORTHWESTERN MONTGOMERY COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property
due to damaging winds. Therefore, the warning has been allowed to
expire. However heavy rain is still possible with this thunderstorm
and flash flooding is occuring in portions of Berks County.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
eastern and southeastern Pennsylvania.
LAT...LON 4028 7595 4045 7602 4057 7553 4043 7547
4042 7548 4041 7547 4037 7545
TIME...MOT...LOC 1716Z 249DEG 20KT 4042 7561
$$
DealThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 12:19 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jul 31, 12:53 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 67 min |
| Jul 31, 1:27 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 4 hr |
| Jul 31, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 18 min |
| Jul 31, 2:03 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 2 hr |
| Jul 31, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 40 min |
| Jul 31, 2:09 PM EDT | Flash Flood Warning | PHI | Delaware | 4 hr |
| Jul 31, 2:27 PM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 31, 2:46 PM EDT | Flash Flood Warning | PHI | Delaware | 4 hr |
| Jul 31, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 50 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2025Every severe thunderstorm warning in 2025
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.