Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 57, NWS Philadelphia/Mount Holly

May 28, 2019Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 28, 2019, 4:27 PM EDT for Berks County, Pennsylvania. It was in force for 63 min. 3 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: May 28, 2019, 4:27 PM EDT (20:27 UTC)
Expired: May 28, 2019, 5:30 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 70.0 mph

County Berks County, PA

The radar

The State College radar (KCCX), 160 km from the middle of the area, began a volume at 20:25 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
May 28, 5:01 PM EDT	HAIL 1	Bernville, PA	TIME ESTIMATED FROM RADAR.
May 28, 5:09 PM EDT	HAIL 1	North Heidelberg Twp, PA	TIME ESTIMATED FROM RADAR.
May 28, 5:10 PM EDT	HAIL 0.75	Robesonia, PA

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
May 28, 1:48 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 195 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: 35 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1167 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 414 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

910 
WUUS51 KPHI 282027
SVRPHI
PAC011-282130-
/O.NEW.KPHI.SV.W.0057.190528T2027Z-190528T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
427 PM EDT Tue May 28 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  West central Berks County in eastern Pennsylvania...

* Until 530 PM EDT.

* At 426 PM EDT, a severe thunderstorm was located near Pine Grove,
  or 11 miles southwest of Minersville, moving southeast at 25 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated. Storm has a history of producing large 
           hail.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Laureldale, Womelsdorf, Wernersville, Newmanstown, Leesport,
  Bernville, Strausstown, Fairview Hgts, Spring Ridge and Centerport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 1000 PM EDT for eastern
Pennsylvania.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 4055 7614 4042 7587
      4029 7611 4036 7621 4037 7623 4049 7643
TIME...MOT...LOC 2026Z 312DEG 22KT 4059 7644 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

Gorse

3 follow-up statements

838 
WWUS51 KPHI 282046
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
446 PM EDT Tue May 28 2019

PAC011-282130-
/O.CON.KPHI.SV.W.0057.000000T0000Z-190528T2130Z/
Berks PA-
446 PM EDT Tue May 28 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WEST CENTRAL BERKS COUNTY...

At 445 PM EDT, a severe thunderstorm was located near Strausstown, or
7 miles north of Myerstown, moving southeast at 25 mph.

HAZARD...70 mph wind gusts and half dollar 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...
Laureldale, Womelsdorf, Wernersville, Newmanstown, Leesport,
Bernville, Strausstown, Fairview Hgts, Spring Ridge and Centerport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 1000 PM EDT for eastern
Pennsylvania.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 7625 4055 7614 4042 7587 4029 7611
      4036 7621 4037 7623 4049 7643 4052 7634
TIME...MOT...LOC 2045Z 312DEG 23KT 4048 7628 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

Gorse

832 
WWUS51 KPHI 282059
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
459 PM EDT Tue May 28 2019

PAC011-282130-
/O.CON.KPHI.SV.W.0057.000000T0000Z-190528T2130Z/
Berks PA-
459 PM EDT Tue May 28 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WEST CENTRAL BERKS COUNTY...

At 459 PM EDT, a severe thunderstorm was located over Womelsdorf, or
9 miles east of Myerstown, moving southeast at 50 mph.

HAZARD...70 mph wind gusts and half dollar 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...
Laureldale, Womelsdorf, Wernersville, Newmanstown, Leesport,
Bernville, Strausstown, Fairview Hgts and Spring Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 1000 PM EDT for eastern
Pennsylvania.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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 7611 4042 7587 4029 7611 4036 7621
      4037 7623 4044 7635
TIME...MOT...LOC 2059Z 307DEG 44KT 4036 7613 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

Gorse

218 
WWUS51 KPHI 282125
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
525 PM EDT Tue May 28 2019

PAC011-282134-
/O.EXP.KPHI.SV.W.0057.000000T0000Z-190528T2130Z/
Berks PA-
525 PM EDT Tue May 28 2019

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BERKS COUNTY WILL
EXPIRE AT 530 PM EDT...
        
The storm which prompted the warning is move out of the area.
Therefore, this warning will be allowed to expire. Another Severe 
Thunderstorm Warning however remains in effect to the southeast.

A tornado watch remains in effect until 1000 PM EDT for eastern
Pennsylvania.

LAT...LON 4052 7611 4042 7587 4029 7611 4036 7621
      4037 7623 4044 7635
TIME...MOT...LOC 2124Z 312DEG 22KT 4026 7598 

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 4:56 PM EDT	Special Weather Statement	PHI	Chester	49 min
May 28, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Berks	67 min
May 28, 5:22 PM EDT	Tornado Warning	PHI	Berks	23 min
May 28, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Berks	39 min
May 28, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	45 min
May 28, 6:03 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
May 28, 6:09 PM EDT	Tornado Warning	PHI	Chester	36 min
May 28, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	Chester	64 min
May 28, 6:14 PM EDT	Areal Flood Advisory	PHI	Chester	4 hr
May 28, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	44 min
May 28, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware	48 min
May 28, 6:41 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	64 min
May 28, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	38 min
May 28, 7:00 PM EDT	Areal Flood Advisory	PHI	Delaware, Philadelphia	3 hr
May 28, 7:42 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	63 min
May 28, 7:59 PM EDT	Areal Flood Advisory	PHI	Monroe	2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Every severe thunderstorm warning in 2019

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.