Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 149, NWS Philadelphia/Mount Holly

July 8, 2025Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2025, 4:25 PM EDT for Berks County, Pennsylvania. It was in force for 35 min. 4 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 8, 2025, 4:25 PM EDT (20:25 UTC)
Expired: Jul 8, 2025, 5:00 PM EDT
In force: 35 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 147 km from the middle of the area, began a volume at 20:26 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 8, 4:26 PM EDT	TSTM WND DMG	Kenhorst, PA	Picture of large trees down in Kenhorst. Time estimated from radar.
Jul 8, 4:26 PM EDT	TSTM WND DMG	Shartlesville, PA	Picture of large trees down in Shartlesville, PA. Time estimated from radar.
Jul 8, 4:43 PM EDT	TSTM WND DMG	2 W Lorane, PA	Picture of large trees down on wires on Seyfert Drive in Birdsboro, PA. Time estimated from radar.
Jul 8, 4:55 PM EDT	HAIL 0.5	Birdsboro, PA	Report from mPING: Half-inch (0.50 in.).

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
Jul 8, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.4 hours before the alert went out and 207 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 695 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1207 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

878 
WUUS51 KPHI 082025
SVRPHI
PAC011-082100-
/O.NEW.KPHI.SV.W.0149.250708T2025Z-250708T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
425 PM EDT Tue Jul 8 2025

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Berks County in eastern Pennsylvania...

* Until 500 PM EDT.

* At 425 PM EDT, severe thunderstorms were located along a line
  extending from near Hamburg to near Adamstown, moving east at 20
  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, Wyomissing, Birdsboro, Hamburg, Fleetwood, Sinking Spring,
  Laureldale, Leesport, Shoemakersville, Lenhartsville, Spring Ridge,
  Fairview Hgts, Shillington, West Reading, Mount Penn, Mohnton,
  Kenhorst, St. Lawrence, Centerport, and West Lawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4057 7608 4058 7606 4057 7602 4063 7600
      4066 7591 4046 7578 4019 7582 4023 7602
      4024 7604 4040 7605 4055 7614
TIME...MOT...LOC 2025Z 249DEG 19KT 4055 7607 4025 7601 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MJL

2 follow-up statements

650 
WWUS51 KPHI 082040
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
440 PM EDT Tue Jul 8 2025

PAC011-082100-
/O.CON.KPHI.SV.W.0149.000000T0000Z-250708T2100Z/
Berks PA-
440 PM EDT Tue Jul 8 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTH CENTRAL BERKS COUNTY...

At 439 PM EDT, severe thunderstorms were located along a line
extending from Hamburg to near Reading, moving east at 20 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, Wyomissing, Birdsboro, Sinking Spring, Laureldale, Spring
Ridge, Shillington, West Reading, Mount Penn, Mohnton, Kenhorst, St.
Lawrence, Wyomissing Hills, West Lawn, Lorane, Reiffton, Whitfield,
West Wyomissing, and Flying Hills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4019 7582 4023 7602 4024 7604 4040 7605
      4037 7579
TIME...MOT...LOC 2039Z 270DEG 19KT 4057 7598 4027 7592 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MJL

232 
WWUS51 KPHI 082048
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
448 PM EDT Tue Jul 8 2025

PAC011-082100-
/O.CON.KPHI.SV.W.0149.000000T0000Z-250708T2100Z/
Berks PA-
448 PM EDT Tue Jul 8 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTH CENTRAL BERKS COUNTY...

At 448 PM EDT, severe thunderstorms were located along a line
extending from near Lenhartsville to near Birdsboro, moving east at
20 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...
Birdsboro, St. Lawrence, Lorane, Reiffton, and Flying Hills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4019 7582 4023 7602 4024 7604 4031 7590
      4037 7579
TIME...MOT...LOC 2048Z 249DEG 19KT 4058 7593 4028 7587 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MJL

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 7, 10:59 PM EDT	Flood Watch	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	23 hr
Jul 8, 3:04 PM EDT	Severe Thunderstorm Warning	PHI	Berks	41 min
Jul 8, 3:44 PM EDT	Severe Thunderstorm Warning	PHI	Berks	46 min
Jul 8, 4:05 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 8, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Chester	40 min
Jul 8, 4:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	42 min
Jul 8, 4:39 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jul 8, 4:54 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Berks, Chester, Montgomery	51 min
Jul 8, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Chester	19 min
Jul 8, 5:02 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jul 8, 5:16 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	29 min
Jul 8, 5:19 PM EDT	Tornado Warning	PHI	Bucks, Montgomery	26 min
Jul 8, 5:20 PM EDT	Tornado Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	25 min
Jul 8, 5:31 PM EDT	Flash Flood Warning	PHI	Chester, Delaware	4 hr
Jul 8, 5:34 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Delaware, Montgomery, Philadelphia	41 min
Jul 8, 5:45 PM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	4 hr
Jul 8, 5:46 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	44 min
Jul 8, 5:52 PM EDT	Tornado Warning	PHI	Bucks, Montgomery, Philadelphia	13 min
Jul 8, 5:53 PM EDT	Flash Flood Warning	PHI	Bucks, Montgomery, Philadelphia	4 hr
Jul 8, 5:56 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Philadelphia	49 min
Jul 8, 6:08 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	34 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2025 Every 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.