Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 176, NWS Philadelphia/Mount Holly

August 3, 2024Berks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2024, 4:13 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 47 min. 7 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: Aug 3, 2024, 4:13 PM EDT (20:13 UTC)
Expired: Aug 3, 2024, 5:00 PM EDT
In force: 47 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), 132 km from the middle of the area, began a volume at 20:14 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

Time	Report	Where	Remark
Aug 3, 4:16 PM EDT	TSTM WND DMG	2 Sw Ruscombmanor Twp, PA	Report of a tree down into house along Mount Laurel Road in Muhlenberg Township. Time estimated from radar.
Aug 3, 4:18 PM EDT	TSTM WND DMG	2 Ene Shoemakersville, PA	Trees down along Moselem Springs Road in Richmond Township. Time estimated from radar.
Aug 3, 4:27 PM EDT	TSTM WND DMG	Ruscombmanor Twp, PA	Several trees and wires down around Ruscombmanor Township, PA. Time estimated from radar.
Aug 3, 4:29 PM EDT	TSTM WND DMG	1 Ene Richmond Twp, PA	Several trees and wires down in Richmond Township. Time estimated from radar.
Aug 3, 4:29 PM EDT	TSTM WND DMG	Fleetwood, PA	Trees and wires down along East Vine Street and North Franklin Street. Time estimated from radar.
Aug 3, 4:29 PM EDT	TSTM WND DMG	Fleetwood, PA	Trees down on wires which fell on top of a car along Locust Street. Time estimated from radar.
Aug 3, 4:43 PM EDT	TSTM WND DMG	2 Wnw District Twp, PA	Trees down on wires along Five Points Road in Rockland Township. Time estimated from 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.

Issued	Product	Office	Lasted
Aug 3, 1:20 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.2 hours before the alert went out and 213 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: 318 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

729 
WUUS51 KPHI 032013
SVRPHI
PAC011-077-032100-
/O.NEW.KPHI.SV.W.0176.240803T2013Z-240803T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
413 PM EDT Sat Aug 3 2024

The National Weather Service in Mount Holly NJ has issued a

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

* Until 500 PM EDT.

* At 413 PM EDT, a severe thunderstorm was located over Leesport, or
  near Reading, moving east 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...
  Reading, Wyomissing, Kutztown, Fleetwood, Laureldale, Topton,
  Leesport, Shoemakersville, Bechtelsville, Lyons, Fairview Hgts,
  Spring Ridge, Gilbertsville, West Reading, Boyertown, Mount Penn,
  St. Lawrence, Centerport, Wyomissing Hills, and Whitfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4052 7602 4058 7562 4035 7560 4031 7564
      4034 7603
TIME...MOT...LOC 2013Z 263DEG 18KT 4042 7594 

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

$$

Staarmann

1 follow-up statement

836 
WWUS51 KPHI 032026 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
426 PM EDT Sat Aug 3 2024

PAC011-077-032100-
/O.CON.KPHI.SV.W.0176.000000T0000Z-240803T2100Z/
Berks PA-Lehigh PA-
426 PM EDT Sat Aug 3 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN BERKS AND SOUTH CENTRAL LEHIGH COUNTIES...

At 426 PM EDT, a severe thunderstorm was located over Fleetwood, or 9
miles northeast of Reading, moving east at 25 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, Fleetwood, Laureldale, Topton, Bechtelsville, Lyons,
Gilbertsville, and Boyertown.

This includes Interstate 78 in Pennsylvania near mile marker 50.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4058 7562 4035 7560 4031 7564 4037 7591
      4054 7590
TIME...MOT...LOC 2026Z 249DEG 20KT 4047 7585 

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.

Issued	Product	Office	Counties	Lasted
Aug 2, 9:12 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	48 min
Aug 2, 9:40 PM EDT	Flash Flood Warning	PHI	Delaware, Philadelphia	4 hr
Aug 3, 3:17 AM EDT	Heat Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	17 hr
Aug 3, 12:20 PM EDT	Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	9 hr
Aug 3, 2:40 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	65 min
Aug 3, 2:53 PM EDT	Flash Flood Warning	PHI	Carbon	117 min
Aug 3, 3:41 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	45 min
Aug 3, 5:38 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Chester, Delaware	97 min
Aug 3, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	59 min
Aug 3, 6:49 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	56 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2024 Every severe thunderstorm warning in 2024

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.