Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 30, NWS Philadelphia/Mount Holly

May 13, 2026Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 13, 2026, 8:20 PM EDT for Berks County, Pennsylvania. It was in force for 25 min. 2 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 13, 2026, 8:20 PM EDT (00:20 UTC)
Expired: May 13, 2026, 8:45 PM EDT
In force: 25 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), 161 km from the middle of the area, began a volume at 00:21 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 13, 8:25 PM EDT	TSTM WND DMG	5 Wnw Bethel, PA	Tree and wires down.
May 13, 8:40 PM EDT	TSTM WND DMG	1 Ssw Strausstown, PA	Tree down.

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 00:00Z, 0.3 hours before the alert went out and 202 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: 49 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1395 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

193 
WUUS51 KPHI 140020
SVRPHI
PAC011-140045-
/O.NEW.KPHI.SV.W.0030.260514T0020Z-260514T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
820 PM EDT Wed May 13 2026

The National Weather Service in Mount Holly NJ has issued a

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

* Until 845 PM EDT.

* At 819 PM EDT, a severe thunderstorm was located near Strausstown,
  or 7 miles north of Myerstown, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Wyomissing, Hamburg, Sinking Spring, Womelsdorf, Wernersville,
  Robesonia, Leesport, Shoemakersville, Bernville, Strausstown,
  Fairview Hgts, Spring Ridge, Mohnton, Centerport, Wyomissing Hills,
  West Lawn, Whitfield, and West Wyomissing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4051 7637 4052 7625 4057 7611 4056 7609
      4058 7607 4057 7602 4063 7600 4066 7593
      4023 7600 4028 7610 4036 7621 4047 7640
      4049 7642
TIME...MOT...LOC 0019Z 268DEG 41KT 4048 7629 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Guzzo

1 follow-up statement

517 
WWUS51 KPHI 140043
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
843 PM EDT Wed May 13 2026

PAC011-140052-
/O.EXP.KPHI.SV.W.0030.000000T0000Z-260514T0045Z/
Berks PA-
843 PM EDT Wed May 13 2026

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN BERKS COUNTY WILL
EXPIRE AT 845 PM EDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 4051 7637 4052 7625 4057 7611 4056 7609
      4058 7607 4057 7602 4063 7600 4066 7593
      4023 7600 4028 7610 4036 7621 4047 7640
      4049 7642
TIME...MOT...LOC 0042Z 268DEG 41KT 4049 7595 

$$

Guzzo

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2026 Every severe thunderstorm warning in 2026

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.