Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 11, 2026, 6:42 PM EDT for Berks County, Pennsylvania. It was in force for 48 min. 1 report 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
- Mar 11, 2026, 6:42 PM EDT (22:42 UTC)
- Expired
- Mar 11, 2026, 7:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 150 km from the middle of the area, began a volume at 22:43 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 |
|---|---|---|---|
| Mar 11, 7:16 PM EDT | TSTM WND DMG | Bern Twp, PA | Trees down in Bern Twp. 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, 10.7 hours before the alert went out and 198 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1769 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
493
WUUS51 KPHI 112242
SVRPHI
PAC011-112330-
/O.NEW.KPHI.SV.W.0001.260311T2242Z-260311T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
642 PM EDT Wed Mar 11 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Berks County in eastern Pennsylvania...
* Until 730 PM EDT.
* At 642 PM EDT, a severe thunderstorm was located near Cleona, or
near Annville, moving east at 35 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Reading, Wyomissing, Sinking Spring, Laureldale, Womelsdorf,
Wernersville, Robesonia, Leesport, Shoemakersville, Bernville,
Strausstown, Spring Ridge, Fairview Hgts, Shillington, West
Reading, Mount Penn, Mohnton, Kenhorst, St. Lawrence, and
Centerport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4054 7584 4027 7583 4028 7610 4036 7621
4037 7623 4048 7642
TIME...MOT...LOC 2242Z 267DEG 32KT 4039 7649
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
659
WWUS51 KPHI 112301
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
701 PM EDT Wed Mar 11 2026
PAC011-112330-
/O.CON.KPHI.SV.W.0001.000000T0000Z-260311T2330Z/
Berks PA-
701 PM EDT Wed Mar 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL BERKS COUNTY...
At 700 PM EDT, a severe thunderstorm was located over Myerstown,
moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Reading, Wyomissing, Sinking Spring, Laureldale, Womelsdorf,
Wernersville, Robesonia, Leesport, Shoemakersville, Bernville,
Strausstown, Spring Ridge, Fairview Hgts, Shillington, West Reading,
Mount Penn, Mohnton, Kenhorst, St. Lawrence, and Centerport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4054 7584 4027 7583 4028 7610 4036 7621
4037 7623 4048 7642
TIME...MOT...LOC 2300Z 267DEG 32KT 4040 7627
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich588
WWUS51 KPHI 112323
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
723 PM EDT Wed Mar 11 2026
PAC011-112333-
/O.EXP.KPHI.SV.W.0001.000000T0000Z-260311T2330Z/
Berks PA-
723 PM EDT Wed Mar 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BERKS COUNTY WILL
EXPIRE AT 730 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.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
eastern Pennsylvania.
LAT...LON 4054 7584 4027 7583 4028 7610 4036 7621
4037 7623 4048 7642
TIME...MOT...LOC 2323Z 267DEG 32KT 4040 7627
$$
HoeflichNearby
Severe Thunderstorm Warnings in Pennsylvania, 2026Every 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.