Alert archive / Pennsylvania / Tornado Warnings in 2025

Tornado Warning 1, NWS Philadelphia/Mount Holly

March 31, 2025Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Mar 31, 2025, 6:12 PM EDT for Berks County, Pennsylvania. It was in force for 11 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 31, 2025, 6:12 PM EDT (22:12 UTC)
Expired: Mar 31, 2025, 6:23 PM EDT
In force: 11 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 22:13 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.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.2 hours before the alert went out and 197 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: 52 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 654 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 241 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

745 
WFUS51 KPHI 312212
TORPHI
PAC011-312245-
/O.NEW.KPHI.TO.W.0001.250331T2212Z-250331T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
612 PM EDT Mon Mar 31 2025

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  South central Berks County in eastern Pennsylvania...

* Until 645 PM EDT.

* At 611 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Adamstown, or near Reading, moving east at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Wyomissing Hills, West Lawn, West Reading, Lorane, Kenhorst, Mount
  Penn, Birdsboro, Laureldale, Reiffton, Reading, Whitfield,
  Wyomissing, St. Lawrence, West Wyomissing, Mohnton, Shillington,
  Flying Hills, Spring Ridge, and Sinking Spring.

This includes Interstate 176 in Pennsylvania between mile markers 6
and 11.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4045 7588 4023 7573 4022 7601 4025 7605
      4028 7607
TIME...MOT...LOC 2211Z 248DEG 16KT 4026 7600 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

RCM

1 follow-up statement

081 
WWUS51 KPHI 312223
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
623 PM EDT Mon Mar 31 2025

PAC011-312233-
/O.CAN.KPHI.TO.W.0001.000000T0000Z-250331T2245Z/
Berks PA-
623 PM EDT Mon Mar 31 2025

...THE TORNADO WARNING FOR SOUTH CENTRAL BERKS COUNTY IS CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 4045 7588 4023 7573 4022 7601 4025 7605
      4028 7607
TIME...MOT...LOC 2222Z 248DEG 16KT 4028 7593 

$$

RCM

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 6:38 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Montgomery	14 min
Mar 31, 7:34 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	41 min

Nearby

Tornado Warnings in Pennsylvania, 2025 Every tornado warning in 2025 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.