Alert archive / Pennsylvania / Tornado Warnings in 2023

Tornado Warning 13, NWS Philadelphia/Mount Holly

June 26, 2023Berks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Jun 26, 2023, 2:12 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 21 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, 2:12 PM EDT (18:12 UTC)
Expired
Jun 26, 2023, 2:33 PM EDT
In force
21 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

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 18:15 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, 6.2 hours before the alert went out and 231 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.

507 
WFUS51 KPHI 261812
TORPHI
PAC011-077-261845-
/O.NEW.KPHI.TO.W.0013.230626T1812Z-230626T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
212 PM EDT Mon Jun 26 2023

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  North central Berks County in eastern Pennsylvania...
  Northwestern Lehigh County in eastern Pennsylvania...

* Until 245 PM EDT.
    
* At 212 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Lenhartsville, or 14 miles southeast of Tamaqua,
  moving northeast at 15 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Lenhartsville, Wanamakers and New Tripoli. 

This includes Interstate 78 in Pennsylvania between mile markers 36
and 45.
 
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 4060 7594 4070 7584 4073 7578 4073 7577
      4060 7565 4054 7588
TIME...MOT...LOC 1812Z 235DEG 15KT 4061 7585 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

AKL
2 follow-up statements
704 
WWUS51 KPHI 261821
SVSPHI

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

PAC011-077-261845-
/O.CON.KPHI.TO.W.0013.000000T0000Z-230626T1845Z/
Berks PA-Lehigh PA-
221 PM EDT Mon Jun 26 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR NORTH
CENTRAL BERKS AND NORTHWESTERN LEHIGH COUNTIES...
    
At 220 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Wanamakers, or 14 miles southeast of Tamaqua, moving
northeast at 15 mph.

HAZARD...Tornado and quarter size hail.

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...
Wanamakers and New Tripoli. 

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 4061 7589 4070 7584 4073 7578 4073 7577
      4064 7569 4058 7584
TIME...MOT...LOC 1820Z 235DEG 15KT 4063 7581 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

AKL
283 
WWUS51 KPHI 261833
SVSPHI

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

PAC011-077-261841-
/O.CAN.KPHI.TO.W.0013.000000T0000Z-230626T1845Z/
Berks PA-Lehigh PA-
233 PM EDT Mon Jun 26 2023

...THE TORNADO WARNING FOR NORTH CENTRAL BERKS AND NORTHWESTERN
LEHIGH COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
eastern Pennsylvania.

Remember, a Severe Thunderstorm Warning still remains in effect for 
North Central Berks and Northwestern Lehigh Counties until 245 PM 
EDT.

LAT...LON 4061 7589 4070 7584 4073 7578 4073 7577
      4064 7569 4058 7584
TIME...MOT...LOC 1829Z 235DEG 15KT 4066 7576 

$$

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, 1:35 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh40 min
Jun 26, 2:04 PM EDTSevere Thunderstorm WarningPHIBerks41 min
Jun 26, 2:06 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton39 min
Jun 26, 2:21 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

Tornado Warnings in Pennsylvania, 2023Every tornado warning in 2023Tornadoes 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.