Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 95, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2025, 6:29 PM EDT for 4 counties in Pennsylvania. It was in force for 46 min. 3 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
- Jun 26, 2025, 6:29 PM EDT (22:29 UTC)
- Expired
- Jun 26, 2025, 7:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Berks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 26, 6:47 PM EDT | TSTM WND DMG | Parksburg, PA | Tree damage and power poles blown down. Time estimated from radar. |
| Jun 26, 6:50 PM EDT | TSTM WND DMG | West Sadsbury Twp, PA | Multiple trees and power poles snapped. Time estimated from radar. |
| Jun 26, 7:05 PM EDT | TSTM WND GST 47 | 2 E Londonderry Twp, PA | Mesonet station DSCR White Clay Creek West Grove-SECCRA. |
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 |
|---|---|---|---|
| Jun 26, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.5 hours before the alert went out and 190 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
- 437 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1094 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
428
WUUS51 KPHI 262229
SVRPHI
PAC011-029-045-091-262315-
/O.NEW.KPHI.SV.W.0095.250626T2229Z-250626T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
629 PM EDT Thu Jun 26 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Berks County in eastern Pennsylvania...
Southwestern Montgomery County in southeastern Pennsylvania...
Chester County in southeastern Pennsylvania...
Central Delaware County in southeastern Pennsylvania...
* Until 715 PM EDT.
* At 629 PM EDT, severe thunderstorms were located along a line
extending from Cedarville to near Elverson to Paradise, moving
southeast at 30 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...
West Chester, Norristown, Pottstown, Phoenixville, West Norriton,
Coatesville, Westtown, Downingtown, Kennett Square, Birdsboro,
Royersford, Parkesburg, West Grove, Honey Brook, Elverson, New
Morgan, Cheyney, Pughtown, Marshallton, and King Of Prussia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4004 7593 4011 7594 4014 7588 4020 7595
4029 7573 4010 7530 4006 7535 4005 7540
4003 7540 4000 7545 3999 7544 3989 7557
3980 7581 3993 7598 3997 7599
TIME...MOT...LOC 2229Z 311DEG 25KT 4025 7568 4012 7586 4001 7610
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva3 follow-up statements
281
WWUS51 KPHI 262249
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
649 PM EDT Thu Jun 26 2025
PAC011-045-091-262259-
/O.CAN.KPHI.SV.W.0095.000000T0000Z-250626T2315Z/
Berks PA-Montgomery PA-Delaware PA-
649 PM EDT Thu Jun 26 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BERKS...
SOUTHWESTERN MONTGOMERY AND CENTRAL DELAWARE COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
eastern and southeastern Pennsylvania.
LAT...LON 4004 7593 4011 7594 4014 7587 4018 7576
3997 7547 3995 7551 3988 7558 3980 7581
3993 7598 3996 7599
TIME...MOT...LOC 2249Z 346DEG 21KT 4009 7571 3996 7589 3985 7613
$$
PAC029-262315-
/O.CON.KPHI.SV.W.0095.000000T0000Z-250626T2315Z/
Chester PA-
649 PM EDT Thu Jun 26 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CENTRAL CHESTER COUNTY...
At 649 PM EDT, severe thunderstorms were located along a line
extending from near Glenmoore to Parkesburg to near Quarryville,
moving south at 25 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...
West Chester, Coatesville, Westtown, Downingtown, Kennett Square,
Parkesburg, West Grove, Honey Brook, Elverson, Cochranville,
Glenmoore, Lionville, Marshallton, Lionville-Marchwood, West Goshen,
Atglen, South Coatesville, Avondale, Modena, and Exton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4004 7593 4011 7594 4014 7587 4018 7576
3997 7547 3995 7551 3988 7558 3980 7581
3993 7598 3996 7599
TIME...MOT...LOC 2249Z 346DEG 21KT 4009 7571 3996 7589 3985 7613
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva393
WWUS51 KPHI 262301
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
701 PM EDT Thu Jun 26 2025
PAC029-262315-
/O.CON.KPHI.SV.W.0095.000000T0000Z-250626T2315Z/
Chester PA-
701 PM EDT Thu Jun 26 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CENTRAL CHESTER COUNTY...
At 700 PM EDT, severe thunderstorms were located along a line
extending from Downingtown to near Cochranville to near Glen Roy,
moving south at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Coatesville, Downingtown, Kennett Square, Parkesburg, West Grove,
Cochranville, Marshallton, Atglen, South Coatesville, Avondale,
Modena, Thorndale, and Toughkenamon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3999 7597 4004 7571 3988 7558 3980 7581
3993 7598 3996 7599
TIME...MOT...LOC 2300Z 348DEG 33KT 3999 7569 3986 7587 3975 7611
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva845
WWUS51 KPHI 262315
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
715 PM EDT Thu Jun 26 2025
PAC029-262324-
/O.EXP.KPHI.SV.W.0095.000000T0000Z-250626T2315Z/
Chester PA-
715 PM EDT Thu Jun 26 2025
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHESTER COUNTY WILL
EXPIRE AT 715 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southeastern Pennsylvania.
LAT...LON 3999 7597 4004 7571 3988 7558 3980 7581
3993 7598 3996 7599
TIME...MOT...LOC 2314Z 311DEG 25KT 3995 7563 3982 7581 3971 7605
$$
DeSilvaThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 12:24 PM EDT | Flood Watch | PHI | Berks, Carbon, Chester, Lehigh | 11 hr |
| Jun 26, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 42 min |
| Jun 26, 4:20 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 40 min |
| Jun 26, 4:31 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 44 min |
| Jun 26, 5:45 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 45 min |
| Jun 26, 6:21 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 26, 6:49 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 4 hr |
| Jun 26, 6:54 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 36 min |
| Jun 26, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 46 min |
| Jun 26, 7:27 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 4 hr |
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.