Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 95, NWS Philadelphia/Mount Holly

June 26, 2023Berks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2023, 1:35 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 40 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
Jun 26, 2023, 1:35 PM EDT (17:35 UTC)
Expired
Jun 26, 2023, 2:15 PM EDT
In force
40 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Berks County, PA, Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 148 km from the middle of the area, began a volume at 17:39 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 1:11 PM EDTSevere Thunderstorm WatchSPC11 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.6 hours before the alert went out and 221 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2023-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 543 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2023-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
543 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

215 
WUUS51 KPHI 261735
SVRPHI
PAC011-077-261815-
/O.NEW.KPHI.SV.W.0095.230626T1735Z-230626T1815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
135 PM EDT Mon Jun 26 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Berks County in eastern Pennsylvania...
  Northwestern Lehigh County in eastern Pennsylvania...

* Until 215 PM EDT.

* At 135 PM EDT, a severe thunderstorm was located over Hamburg, or
  10 miles east of Schuylkill Haven, moving northeast at 30 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...
  Kutztown, Hamburg, Shoemakersville, Lenhartsville, Wanamakers, New
  Tripoli, Claussville and Centerport.

This includes the following highways...
 Northeast Extension near mile marker 58.
 Interstate 78 in Pennsylvania between mile markers 27 and 52.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4057 7608 4058 7606 4057 7602 4063 7600
      4070 7583 4073 7576 4060 7556 4048 7585
      4049 7603 4056 7611
TIME...MOT...LOC 1735Z 214DEG 27KT 4058 7599 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

AKL
1 follow-up statement
657 
WWUS51 KPHI 261759
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
159 PM EDT Mon Jun 26 2023

PAC011-077-261815-
/O.CON.KPHI.SV.W.0095.000000T0000Z-230626T1815Z/
Berks PA-Lehigh PA-
159 PM EDT Mon Jun 26 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR NORTH CENTRAL BERKS AND NORTHWESTERN LEHIGH COUNTIES...

At 159 PM EDT, a severe thunderstorm was located near Hamburg, or 10
miles east of Schuylkill Haven, moving northeast at 15 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...
Hamburg, Lenhartsville, New Tripoli and Wanamakers. 

This includes Interstate 78 in Pennsylvania between mile markers 31
and 45.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4054 7597 4057 7602 4063 7600 4070 7583
      4073 7576 4064 7562 4053 7581
TIME...MOT...LOC 1759Z 204DEG 15KT 4062 7597 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

AKL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 3:33 AM EDTFlood WatchPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more23 hr
Jun 26, 8:41 AM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton49 min
Jun 26, 9:18 AM EDTSevere Thunderstorm WarningPHICarbon, Monroe, Northampton42 min
Jun 26, 9:47 AM EDTSevere Thunderstorm WarningPHIMonroe, Northampton43 min
Jun 26, 1:13 PM EDTSevere Thunderstorm WarningPHIBerks47 min
Jun 26, 2:04 PM EDTSevere Thunderstorm WarningPHIBerks41 min
Jun 26, 2:06 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton39 min
Jun 26, 2:12 PM EDTTornado WarningPHIBerks, Lehigh21 min
Jun 26, 2:21 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh54 min
Jun 26, 2:23 PM EDTAreal Flood AdvisoryPHIBerks, Carbon, Lehigh107 min
Jun 26, 2:31 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton44 min
Jun 26, 2:32 PM EDTFlash Flood WarningPHIBerks, Lehigh67 min
Jun 26, 2:40 PM EDTSpecial Weather StatementPHIBucks35 min
Jun 26, 2:58 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton47 min
Jun 26, 3:02 PM EDTTornado WarningPHINorthampton28 min
Jun 26, 3:03 PM EDTAreal Flood AdvisoryPHIMonroe104 min
Jun 26, 3:25 PM EDTSevere Thunderstorm WarningPHIMonroe, Northampton41 min
Jun 26, 3:56 PM EDTAreal Flood AdvisoryPHIMonroe, Northampton2 hr
Jun 26, 4:04 PM EDTSpecial Weather StatementPHINorthampton41 min
Jun 26, 4:50 PM EDTAreal Flood AdvisoryPHILehigh, Northampton73 min
Jun 26, 5:47 PM EDTSpecial Weather StatementPHILebanon28 min
Jun 26, 5:59 PM EDTSevere Thunderstorm WarningPHIChester, Delaware24 min
Jun 26, 6:00 PM EDTAreal Flood AdvisoryPHIMonroe, Northampton4 hr
Jun 26, 6:03 PM EDTFlash Flood WarningPHILehigh, Northampton6 hr
Jun 26, 6:16 PM EDTSpecial Weather StatementPHIDelaware29 min
Jun 26, 6:26 PM EDTSpecial Weather StatementPHIChester34 min
Jun 26, 6:37 PM EDTFlash Flood WarningPHIChester, Delaware2 hr
Jun 26, 6:50 PM EDTSpecial Weather StatementPHIMontgomery25 min
Jun 26, 6:51 PM EDTSpecial Weather StatementPHINorthampton24 min
Jun 26, 7:13 PM EDTSpecial Weather StatementPHIBucks32 min
Jun 26, 7:26 PM EDTSpecial Weather StatementPHIMontgomery34 min
Jun 26, 7:44 PM EDTSpecial Weather StatementPHIDelaware, Montgomery31 min
Jun 26, 7:59 PM EDTSpecial Weather StatementPHILehigh31 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023Every severe thunderstorm warning in 2023

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.