Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 97, NWS Philadelphia/Mount Holly

July 1, 2022Berks County, Chester County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2022, 2:18 PM EDT for Berks County, Chester County, Pennsylvania. It was in force for 25 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
Jul 1, 2022, 2:18 PM EDT (18:18 UTC)
Expired
Jul 1, 2022, 2:43 PM EDT
In force
25 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Berks County, PA, Chester County, PA

The radar

The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 18:19 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
Jul 1, 2:41 PM EDTTSTM WND DMG4 Ssw Honey Brook Twp, PATREES DOWN ON WIRES AT THE INTERSECTION OF COMPASS ROAD AND HILL ROAD. TIME ESTIMATED VIA 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, 6.3 hours before the alert went out and 178 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 2022-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 447 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2022-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
447 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
1260 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

569 
WUUS51 KPHI 011818
SVRPHI
PAC011-029-011900-
/O.NEW.KPHI.SV.W.0097.220701T1818Z-220701T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
218 PM EDT Fri Jul 1 2022

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southern Berks County in eastern Pennsylvania...
  Northwestern Chester County in southeastern Pennsylvania...

* Until 300 PM EDT.

* At 218 PM EDT, a severe thunderstorm was located near New Holland,
  moving east at 15 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Wind 
           damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Coatesville, Parkesburg, Honey Brook, Elverson, New Morgan, Atglen,
  South Coatesville and Modena.

This includes the following highways...
 Pennsylvania Turnpike between mile markers 296 and 304.
 Interstate 176 in Pennsylvania between mile markers 1 and 2.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4001 7596 4004 7593 4011 7594 4014 7588
      4018 7593 4020 7578 3993 7581 3995 7599
TIME...MOT...LOC 1818Z 273DEG 13KT 4008 7604 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RCM
1 follow-up statement
846 
WWUS51 KPHI 011843
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
243 PM EDT Fri Jul 1 2022

PAC011-029-011853-
/O.CAN.KPHI.SV.W.0097.000000T0000Z-220701T1900Z/
Berks PA-Chester PA-
243 PM EDT Fri Jul 1 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN BERKS AND
NORTHWESTERN CHESTER COUNTIES IS CANCELLED...
                
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 has been cancelled.  However small hail, gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 4001 7596 4004 7593 4011 7594 4014 7588
      4018 7593 4020 7578 3993 7581 3995 7599
TIME...MOT...LOC 1841Z 273DEG 13KT 4008 7592 

$$

RCM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 2:04 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh20 min
Jul 1, 3:38 PM EDTSevere Thunderstorm WarningPHIBerks18 min
Jul 1, 3:44 PM EDTSevere Thunderstorm WarningPHIChester46 min
Jul 1, 4:56 PM EDTSevere Thunderstorm WarningPHIBerks32 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2022Every severe thunderstorm warning in 2022

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.