Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 97, NWS Philadelphia/Mount Holly

June 26, 20234 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2023, 2:06 PM EDT for 4 counties in Pennsylvania. It was in force for 39 min. 4 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
Jun 26, 2023, 2:06 PM EDT (18:06 UTC)
Expired
Jun 26, 2023, 2:45 PM EDT
In force
39 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 18:09 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

TimeReportWhereRemark
Jun 26, 2:15 PM EDTTSTM WND DMG4 Sse Schnecksville, PAReports of trees downed near South Whitehall Township, PA. Time estimated via radar.
Jun 26, 2:15 PM EDTTSTM WND DMG4 Sse Schnecksville, PAReports of trees downed near South Whitehall Township, PA. Time estimated via radar.
Jun 26, 2:21 PM EDTTSTM WND DMGLehigh Twp, PAReports of numerous trees down in Lehigh Township. Time estimated via radar.
Jun 26, 2:21 PM EDTTSTM WND DMGLehigh Twp, PAReports of numerous trees down in Lehigh Township. Time estimated via radar.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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

Brookhaven, NY (KOKX), launched 12:00Z, 6.1 hours before the alert went out and 229 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, Brookhaven, NY at 12:00Z on 2023-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 369 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, Brookhaven, NY at 12:00Z on 2023-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939Sfc1 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
369 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
807 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

103 
WUUS51 KPHI 261806
SVRPHI
PAC025-077-089-095-261845-
/O.NEW.KPHI.SV.W.0097.230626T1806Z-230626T1845Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Lehigh County in eastern Pennsylvania...
  Southeastern Carbon County in northeastern Pennsylvania...
  Southwestern Monroe County in northeastern Pennsylvania...
  West central Northampton County in eastern Pennsylvania...

* Until 245 PM EDT.

* At 205 PM EDT, a severe thunderstorm was located over
  Schnecksville, or 11 miles south of Lehighton, moving northeast at
  20 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...
  Northampton, Nazareth, Palmerton, Slatington, Bath, Walnutport,
  Belfast, Kunkletown, Neffs, Coffeetown, New Tripoli, Rossland,
  Berlinsville, Emerald, Kresgeville, Claussville, Danielsville,
  Beltzville State Park, Penn Forest Reservoir and Jordan Valley.

This includes Northeast Extension between mile markers 60 and 74, and
near mile marker 77.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4058 7566 4068 7580 4098 7555 4078 7522
TIME...MOT...LOC 1805Z 219DEG 16KT 4067 7566 

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

$$

MJL
1 follow-up statement
777 
WWUS51 KPHI 261837
SVSPHI

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

PAC025-077-089-095-261845-
/O.CON.KPHI.SV.W.0097.000000T0000Z-230626T1845Z/
Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
237 PM EDT Mon Jun 26 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR NORTHWESTERN LEHIGH...SOUTHEASTERN CARBON...SOUTHWESTERN MONROE
AND WEST CENTRAL NORTHAMPTON COUNTIES...

At 237 PM EDT, a severe thunderstorm was located over Danielsville,
or 10 miles east of Lehighton, moving northeast at 20 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...
Northampton, Palmerton, Slatington, Bath, Walnutport, Belfast,
Danielsville, Kunkletown, Neffs, Beltzville State Park, New Tripoli,
Rossland, Berlinsville, Penn Forest Reservoir, Jordan Valley,
Beersville, Emerald, Schnecksville, Kresgeville and Bowmanstown.

This includes Northeast Extension between mile markers 64 and 74, and
near mile marker 77.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4064 7572 4068 7580 4098 7555 4078 7522
TIME...MOT...LOC 1837Z 219DEG 17KT 4079 7553 

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

$$

Staarmann

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, 2:12 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.