Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 3, 2025, 7:34 PM EDT for 4 counties in Pennsylvania. It was in force for 41 min. 5 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
- May 3, 2025, 7:34 PM EDT (23:34 UTC)
- Expired
- May 3, 2025, 8:15 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 23:36 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 |
|---|---|---|---|
| May 3, 7:44 PM EDT | TSTM WND DMG | 1 S Media, PA | Downed tree on ROSE VALLEY RD / YALE AV / MANCHESTER AV southbound between CREEK RD and SCHOOL LN. Time estimated from radar. |
| May 3, 7:45 PM EDT | HAIL 0.25 | Aston, PA | Pea sized hail. |
| May 3, 7:45 PM EDT | HAIL 0.88 | Clifton Heights, PA | Nickel sized hail. |
| May 3, 7:56 PM EDT | TSTM WND DMG | 1 S Germantown, PA | Tree down. |
| May 3, 8:12 PM EDT | HAIL 0.25 | Philadelphia, PA | Pea sized hail. |
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 |
|---|---|---|---|
| May 3, 5:51 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.6 hours before the alert went out and 219 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
- 22 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1299 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
110
WUUS51 KPHI 032334
SVRPHI
PAC017-045-091-101-040015-
/O.NEW.KPHI.SV.W.0030.250503T2334Z-250504T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
734 PM EDT Sat May 3 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Montgomery County in southeastern Pennsylvania...
South central Bucks County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until 815 PM EDT.
* At 734 PM EDT, a severe thunderstorm was located over Nether
Providence Township, or 13 miles east of West Chester, moving
northeast 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...
Cornwells Heights-Eddington, Wissinoming, Abington, Trainer,
Eddystone, Village Green-Green Ridge, Maple Glen, Bryn Mawr,
Prospect Park, Gradyville, Penn Wynne, Jenkintown, Broomall,
Chester, Chester Township, Rutledge, Drexel Hill, Sharon Hill,
Willow Grove, and Horsham.
This includes the following highways...
Pennsylvania Turnpike between mile markers 333 and 351.
Interstate 95 in Pennsylvania between mile markers 0 and 16, and
between mile markers 19 and 37.
Interstate 76 in Pennsylvania between mile markers 331 and 350.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 476 in Pennsylvania between mile markers 0 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4026 7512 4008 7490 4005 7497 4002 7501
4002 7504 3998 7507 3996 7513 3992 7513
3985 7524 3985 7533 3980 7541 3982 7546
3990 7554
TIME...MOT...LOC 2334Z 226DEG 23KT 3990 7537
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
174
WWUS51 KPHI 032351
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
751 PM EDT Sat May 3 2025
PAC017-045-091-101-040015-
/O.CON.KPHI.SV.W.0030.000000T0000Z-250504T0015Z/
Montgomery PA-Bucks PA-Philadelphia PA-Delaware PA-
751 PM EDT Sat May 3 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN MONTGOMERY...SOUTH CENTRAL BUCKS...PHILADELPHIA AND
CENTRAL DELAWARE COUNTIES...
At 751 PM EDT, a severe thunderstorm was located over Drexel Hill, or
12 miles southwest of Philadelphia, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Clifton Heights, Collingdale, Darby Township, Abington, Eddystone,
Rockledge, Morris Park, Fort Washington, Maple Glen, Hatboro, Bryn
Mawr, Flourtown, Brookhaven, Trout Lake, Radnor Township, Prospect
Park, Aldan, Ridley Park, Gradyville, and Penn Wynne.
This includes the following highways...
Pennsylvania Turnpike between mile markers 334 and 348.
Interstate 95 in Pennsylvania between mile markers 5 and 9.
Interstate 76 in Pennsylvania between mile markers 331 and 347.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 476 in Pennsylvania between mile markers 0 and 17, and
near mile marker 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4023 7515 4010 7494 4002 7509 3995 7517
3993 7518 3984 7536 3993 7549
TIME...MOT...LOC 2351Z 221DEG 14KT 3993 7534
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich603
WWUS51 KPHI 040011
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
811 PM EDT Sat May 3 2025
PAC017-045-091-101-040021-
/O.EXP.KPHI.SV.W.0030.000000T0000Z-250504T0015Z/
Montgomery PA-Bucks PA-Philadelphia PA-Delaware PA-
811 PM EDT Sat May 3 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY...
SOUTH CENTRAL BUCKS...PHILADELPHIA AND CENTRAL DELAWARE COUNTIES WILL
EXPIRE AT 815 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southeastern Pennsylvania.
A new Severe Thunderstorm Warning still remains in effect for
Philadelphia, Bucks, and Montgomery County until 900 PM EDT.
LAT...LON 4023 7515 4010 7494 4002 7509 3995 7517
3993 7518 3984 7536 3993 7549
TIME...MOT...LOC 0010Z 226DEG 23KT 4001 7521
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 52 min |
| May 3, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 44 min |
| May 3, 7:32 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 3 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; radar from the NEXRAD Level II archive.