Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly

April 15, 2025Berks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2025, 3:07 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 53 min. 22 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: Apr 15, 2025, 3:07 PM EDT (19:07 UTC)
Expired: Apr 15, 2025, 4:00 PM EDT
In force: 53 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), 143 km from the middle of the area, began a volume at 19:08 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
Apr 15, 3:30 PM EDT	TSTM WND DMG	Strausstown, PA	Trees down in the Strausstown area. Time estimated from radar.
Apr 15, 3:30 PM EDT	TSTM WND DMG	Strausstown, PA	Trees down in the Strausstown area. Time estimated from radar.
Apr 15, 3:35 PM EDT	TSTM WND DMG	Bernville, PA	Tree down and pole snapped in Bernville. Time estimated from radar.
Apr 15, 3:35 PM EDT	TSTM WND DMG	Bernville, PA	Tree down and pole snapped in Bernville. Time estimated from radar.
Apr 15, 3:40 PM EDT	TSTM WND DMG	Sinking Spring, PA	Trees and wires down. Time estimated from radar.
Apr 15, 3:40 PM EDT	TSTM WND DMG	Sinking Spring, PA	Trees and wires down. Time estimated from radar.
Apr 15, 3:43 PM EDT	TSTM WND DMG	1 Wsw Reading Regional, PA	Trees and wires down near the Reading airport. Time from the Reading airport wind gust used.
Apr 15, 3:43 PM EDT	TSTM WND DMG	1 Wsw Reading Regional, PA	Trees and wires down near the Reading airport. Time from the Reading airport wind gust used.
Apr 15, 3:43 PM EDT	TSTM WND DMG	Wyomissing, PA	Picture shared on social media showed trees down in Wyomissing. Time estimated from radar.
Apr 15, 3:43 PM EDT	TSTM WND GST 62	Reading Regional Airpor, PA	Sustained wind of 46 mph at time of observation.
Apr 15, 3:43 PM EDT	TSTM WND GST 62	Reading Regional Airpor, PA	Sustained wind of 46 mph at time of observation.
Apr 15, 3:45 PM EDT	TSTM WND DMG	3 Sse Kenhorst, PA	Significant damage to a building on Wedge Lane in Reading. Time estimated from radar.
Apr 15, 3:48 PM EDT	TSTM WND DMG	1 Se Exeter Twp, PA	Multiple trees down in the area of Ladderback Lane. Damage likely occurred with severe outflow. Time estimated from radar.
Apr 15, 3:52 PM EDT	TSTM WND DMG	2 Sw Earl Twp, PA	Roof blown off and a building collapse reported in Earl Township. Time estimate from radar.
Apr 15, 3:54 PM EDT	TSTM WND DMG	1 Nw Amity Gardens, PA	Wires down with several fires reported on Geiger Road. Time estimated from radar.
Apr 15, 3:54 PM EDT	TSTM WND DMG	1 Nw Amity Gardens, PA	Wires down with several fires reported on Geiger Road. Time estimated from radar.
Apr 15, 3:55 PM EDT	TSTM WND DMG	Laureldale, PA	Tree into a house. Time estimated from radar.
Apr 15, 3:55 PM EDT	TSTM WND DMG	Laureldale, PA	Tree into a house. Time estimated from radar.
Apr 15, 3:58 PM EDT	TSTM WND DMG	Bechtelsville, PA	Tree and wires down. Time estimated from radar.
Apr 15, 3:58 PM EDT	TSTM WND DMG	Bechtelsville, PA	Tree and wires down. Time estimated from radar.
Apr 15, 3:58 PM EDT	HAIL 0.75	Centerport, PA
Apr 15, 4:07 PM EDT	TSTM WND DMG	Fleetwood, PA	Large tree uprooted. 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, 7.1 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.

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1850 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

954 
WUUS51 KPHI 151907
SVRPHI
PAC011-077-152000-
/O.NEW.KPHI.SV.W.0015.250415T1907Z-250415T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
307 PM EDT Tue Apr 15 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...

* Until 400 PM EDT.

* At 307 PM EDT, severe thunderstorms were located along a line
  extending from Donaldson to Lickdale to Hummelstown, moving east at
  50 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...
  West Lawn, Boyertown, Coffeetown, Hokendauqua, New Tripoli, Emmaus,
  Strausstown, New Morgan, Ancient Oaks, Catasauqua, Leesport,
  Mohnton, Bechtelsville, Shoemakersville, Lenhartsville, Fleetwood,
  Mount Penn, Birdsboro, Reiffton, and Macungie.

This includes the following highways...
 Pennsylvania Turnpike between mile markers 295 and 300.
 Northeast Extension between mile markers 50 and 63.
 Interstate 78 in Pennsylvania near mile marker 8, and between mile
markers 10 and 59.
 Interstate 176 in Pennsylvania between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4052 7634 4052 7625 4056 7609 4058 7606
      4057 7602 4065 7598 4070 7583 4066 7548
      4067 7542 4066 7542 4047 7551 4024 7570
      4013 7587 4049 7643
TIME...MOT...LOC 1907Z 285DEG 44KT 4066 7639 4045 7649 4027 7672 

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

$$

Staarmann

2 follow-up statements

578 
WWUS51 KPHI 151927
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
327 PM EDT Tue Apr 15 2025

PAC011-077-152000-
/O.CON.KPHI.SV.W.0015.000000T0000Z-250415T2000Z/
Berks PA-Lehigh PA-
327 PM EDT Tue Apr 15 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR BERKS AND CENTRAL LEHIGH COUNTIES...

At 325 PM EDT, severe thunderstorms were located along a line
extending from near Schuylkill Haven to near Richland to Mount 
Gretna Heights, moving east at 45 mph. A gust of 54 mph was recently 
measured at the Muir Army Field in Lebanon County PA.

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...
West Lawn, Boyertown, Coffeetown, Hokendauqua, New Tripoli, Emmaus,
Strausstown, New Morgan, Ancient Oaks, Catasauqua, Leesport, Mohnton,
Bechtelsville, Shoemakersville, Lenhartsville, Fleetwood, Mount Penn,
Birdsboro, Reiffton, and Macungie.

This includes the following highways...
 Pennsylvania Turnpike between mile markers 295 and 300.
 Northeast Extension between mile markers 50 and 63.
 Interstate 78 in Pennsylvania near mile marker 8, and between mile
markers 10 and 59.
 Interstate 176 in Pennsylvania between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4052 7634 4052 7625 4056 7609 4058 7606
      4057 7602 4065 7598 4070 7583 4066 7548
      4067 7542 4066 7542 4047 7551 4024 7570
      4013 7587 4049 7643
TIME...MOT...LOC 1925Z 284DEG 38KT 4061 7613 4040 7626 4025 7644 

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

$$

Staarmann

351 
WWUS51 KPHI 151946
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
346 PM EDT Tue Apr 15 2025

PAC011-077-152000-
/O.CON.KPHI.SV.W.0015.000000T0000Z-250415T2000Z/
Berks PA-Lehigh PA-
346 PM EDT Tue Apr 15 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR BERKS AND CENTRAL LEHIGH COUNTIES...

At 344 PM EDT, severe thunderstorms were located along a line
extending from Lenhartsville to Reading to near Terre Hill, moving
east at 55 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Trained spotter. At 343 PM EDT, a 62 mph wind gust was 
         measured at the Reading Regional Airport. Several areas of 
         wind damage have been reported across western Berks County.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
West Lawn, Boyertown, Coffeetown, Hokendauqua, New Tripoli, Emmaus,
Strausstown, New Morgan, Ancient Oaks, Catasauqua, Leesport, Mohnton,
Bechtelsville, Shoemakersville, Lenhartsville, Fleetwood, Mount Penn,
Birdsboro, Reiffton, and Macungie.

This includes the following highways...
 Pennsylvania Turnpike between mile markers 295 and 300.
 Northeast Extension between mile markers 50 and 63.
 Interstate 78 in Pennsylvania between mile markers 12 and 59.
 Interstate 176 in Pennsylvania between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across Berks COunty. SEEK SHELTER NOW inside a sturdy 
structure and stay away from windows.
 
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4052 7634 4052 7625 4056 7609 4058 7606
      4057 7602 4065 7598 4070 7583 4066 7548
      4067 7542 4066 7542 4047 7551 4024 7570
      4013 7587 4043 7634
TIME...MOT...LOC 1944Z 283DEG 46KT 4057 7590 4034 7591 4016 7612 

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

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 1:09 PM EDT	Wind Advisory	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	7 hr
Apr 15, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	49 min
Apr 15, 4:07 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	53 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.