Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 55, NWS Philadelphia/Mount Holly

June 3, 2020Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 3, 2020, 5:46 PM EDT for Berks County, Pennsylvania. It was in force for 44 min. 9 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 3, 2020, 5:46 PM EDT (21:46 UTC)
Expired: Jun 3, 2020, 6:30 PM EDT
In force: 44 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 160 km from the middle of the area, began a volume at 21:48 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
Jun 3, 6:12 PM EDT	TSTM WND DMG	West Wyomissing, PA	DOWNED POWER LINES ON CLEVELAND AVENUE. TIME ESTIMATED.
Jun 3, 6:15 PM EDT	TSTM WND DMG	2 Sse Robesonia, PA	DOWNED POWER LINES NEAR TEXTER MOUNTAIN ROAD. TIME ESTIMATED.
Jun 3, 6:15 PM EDT	TSTM WND DMG	West Lawn, PA	DOWNED TREE DAMAGED A PROPERTY ON GARFIELD AVENUE.
Jun 3, 6:15 PM EDT	TSTM WND DMG	West Lawn, PA	DOWNED TREE ONTO A HOUSE.
Jun 3, 6:15 PM EDT	HAIL 0.88	Womelsdorf, PA	DIME TO NICKEL SIZE HAIL. TIME ESTIMATED FROM RADAR.
Jun 3, 6:20 PM EDT	TSTM WND DMG	1 Nne Sinking Spring, PA	DOWNED TREE ON WIRES NEAR OCTAGON AVENUE.
Jun 3, 6:20 PM EDT	TSTM WND DMG	2 Sw Muhlenberg Twp, PA	TREE ON WIRES ON WOODWARD DRIVE.
Jun 3, 6:22 PM EDT	TSTM WND DMG	Wernersville, PA	MPING REPORT OF TREES DOWN. TIME ESTIMATED.
Jun 3, 6:35 PM EDT	TSTM WND DMG	Birdsboro, PA	DOWNED TREES AND WIRES REPORTED.

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
Jun 3, 3:52 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.8 hours before the alert went out and 192 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2031 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

733 
WUUS51 KPHI 032146
SVRPHI
PAC011-032230-
/O.NEW.KPHI.SV.W.0055.200603T2146Z-200603T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
546 PM EDT Wed Jun 3 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Berks County in eastern Pennsylvania...

* Until 630 PM EDT.

* At 545 PM EDT, a severe thunderstorm was located near Fort
  Indiantown Gap, or 13 miles north of Annville, moving southeast at
  50 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Reading, Wyomissing, Birdsboro, Sinking Spring, Womelsdorf,
  Wernersville, Robesonia, Bernville, Strausstown, New Morgan, Spring
  Ridge, Shillington, West Reading, Mount Penn, Mohnton, Kenhorst,
  St. Lawrence, Wyomissing Hills, West Lawn and Lorane.

This includes the following highways...
 Interstate 78 in Pennsylvania between mile markers 10 and 19.
 Interstate 176 in Pennsylvania between mile markers 2 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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

&&

LAT...LON 4049 7643 4052 7635 4052 7624 4030 7577
      4017 7592 4036 7621
TIME...MOT...LOC 2145Z 305DEG 42KT 4051 7660 

HAIL...1.00IN
WIND...70MPH
 
$$

Fitzsimmons

1 follow-up statement

617 
WWUS51 KPHI 032212
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
612 PM EDT Wed Jun 3 2020

PAC011-032230-
/O.CON.KPHI.SV.W.0055.000000T0000Z-200603T2230Z/
Berks PA-
612 PM EDT Wed Jun 3 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR CENTRAL BERKS COUNTY...

At 611 PM EDT, a severe thunderstorm was located over Womelsdorf, or
near Myerstown, moving southeast at 45 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Reading, Wyomissing, Birdsboro, Sinking Spring, Womelsdorf,
Wernersville, Robesonia, Bernville, Strausstown, New Morgan, Spring
Ridge, Shillington, West Reading, Mount Penn, Mohnton, Kenhorst, St.
Lawrence, Wyomissing Hills, West Lawn and Lorane.

This includes the following highways...
 Interstate 78 in Pennsylvania between mile markers 13 and 19.
 Interstate 176 in Pennsylvania between mile markers 2 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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.

&&

LAT...LON 4045 7637 4051 7622 4051 7621 4030 7577
      4017 7592 4036 7621
TIME...MOT...LOC 2211Z 302DEG 39KT 4038 7618 

HAIL...1.00IN
WIND...70MPH
 
$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 12:24 AM EDT	Special Weather Statement	PHI	Monroe	51 min
Jun 3, 11:04 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more	41 min
Jun 3, 11:29 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	46 min
Jun 3, 11:38 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	37 min
Jun 3, 11:59 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	46 min
Jun 3, 12:06 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Philadelphia	39 min
Jun 3, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	64 min
Jun 3, 7:02 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	58 min
Jun 3, 7:11 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	64 min
Jun 3, 7:21 PM EDT	Tornado Warning	PHI	Delaware, Montgomery, Philadelphia	24 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2020 Every severe thunderstorm warning in 2020

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.