Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 64, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 4, 2020, 5:39 PM EDT for Berks County, Pennsylvania. It was in force for 81 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 4, 2020, 5:39 PM EDT (21:39 UTC)
- Expired
- Jun 4, 2020, 7:00 PM EDT
- In force
- 81 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 158 km from the middle of the area, began a volume at 21:40 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 4, 5:40 PM EDT | TSTM WND DMG | 2 W Strausstown, PA | DOWNED WIRES NEAR KLINE ROAD AND ROUTE 419. TIME ESTIMATED FROM RADAR. |
| Jun 4, 5:56 PM EDT | TSTM WND DMG | 1 Nnw Strausstown, PA | DOWNED WIRES NEAR SCHUBERT ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 4, 6:30 PM EDT | TSTM WND DMG | Bernville, PA | A FEW TREES REPORTED DOWN IN BERNVILLE. ALSO A COUPLE OF SPORADIC DOWNED TREE REPORTS IN NEARBY AREAS. TIME ESTIMATED FROM RADAR. |
| Jun 4, 6:32 PM EDT | TSTM WND DMG | 1 Wsw Hamburg, PA | A COUPLE OF REPORTS OF POWER LINES DOWN NEAR WEST STATE STREET. TIME ESTIMATED FROM 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, 9.7 hours before the alert went out and 203 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.
- Mixed-layer CAPE
- 139 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 1499 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
750
WUUS51 KPHI 042139
SVRPHI
PAC011-042300-
/O.NEW.KPHI.SV.W.0064.200604T2139Z-200604T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
539 PM EDT Thu Jun 4 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Berks County in eastern Pennsylvania...
* Until 700 PM EDT.
* At 538 PM EDT, a severe thunderstorm was located over Harper
Tavern, or near Annville, moving east at 30 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, Hamburg, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Robesonia, Leesport, Shoemakersville,
Bernville, Strausstown, Lenhartsville, Spring Ridge, Fairview Hgts,
Shillington, West Reading, Mount Penn, Mohnton and Kenhorst.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 10 and 37.
Interstate 176 in Pennsylvania between mile markers 7 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.
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.
&&
LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
4063 7600 4065 7598 4067 7589 4023 7583
4026 7607 4036 7621 4037 7623 4049 7643
TIME...MOT...LOC 2138Z 258DEG 26KT 4041 7654
HAIL...1.00IN
WIND...60MPH
$$
Gorse2 follow-up statements
033
WWUS51 KPHI 042201
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
601 PM EDT Thu Jun 4 2020
PAC011-042300-
/O.CON.KPHI.SV.W.0064.000000T0000Z-200604T2300Z/
Berks PA-
601 PM EDT Thu Jun 4 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CENTRAL BERKS COUNTY...
At 600 PM EDT, a severe thunderstorm was located over Myerstown,
moving east at 30 mph. Another potentially severe thunderstorm was
located near Strausstown.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Reading, Wyomissing, Hamburg, Sinking Spring, Laureldale, Womelsdorf,
Wernersville, Robesonia, Leesport, Shoemakersville, Bernville,
Strausstown, Lenhartsville, Spring Ridge, Fairview Hgts, Shillington,
West Reading, Mount Penn, Mohnton and Kenhorst.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 10 and 37.
Interstate 176 in Pennsylvania between mile markers 7 and 11.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
4063 7600 4065 7598 4067 7589 4023 7583
4026 7607 4036 7621 4037 7623 4049 7643
TIME...MOT...LOC 2200Z 267DEG 26KT 4040 7633
HAIL...1.00IN
WIND...60MPH
$$
Gorse244
WWUS51 KPHI 042224
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
624 PM EDT Thu Jun 4 2020
PAC011-042300-
/O.CON.KPHI.SV.W.0064.000000T0000Z-200604T2300Z/
Berks PA-
624 PM EDT Thu Jun 4 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CENTRAL BERKS COUNTY...
At 623 PM EDT, a severe thunderstorm was located over Bernville, or
11 miles northwest of Reading, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated. Utility company reported downed wires near
Strausstown.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Reading, Wyomissing, Hamburg, Sinking Spring, Laureldale, Womelsdorf,
Wernersville, Robesonia, Leesport, Shoemakersville, Bernville,
Strausstown, Lenhartsville, Spring Ridge, Fairview Hgts, Shillington,
West Reading, Mount Penn, Mohnton and Kenhorst.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 13 and 37.
Interstate 176 in Pennsylvania between mile markers 7 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 4051 7629 4052 7625 4058 7605 4057 7602
4063 7600 4065 7598 4067 7589 4023 7583
4026 7607 4036 7621 4037 7623 4044 7634
TIME...MOT...LOC 2223Z 259DEG 26KT 4043 7611
HAIL...1.00IN
WIND...60MPH
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 8:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 24 min |
| Jun 4, 6:06 AM EDT | Coastal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 22 hr |
| Jun 4, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 63 min |
| Jun 4, 7:47 PM EDT | Special Weather Statement | PHI | Bucks | 43 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2020Every 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.