Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 58, NWS Philadelphia/Mount Holly

May 28, 2019Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 28, 2019, 5:08 PM EDT for Berks County, Pennsylvania. It was in force for 67 min. 17 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, 5:08 PM EDT (21:08 UTC)
Expired: May 28, 2019, 6:15 PM EDT
In force: 67 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 70.0 mph

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 21:09 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, 5:09 PM EDT	HAIL 1	North Heidelberg Twp, PA	TIME ESTIMATED FROM RADAR.
May 28, 5:10 PM EDT	HAIL 0.75	Robesonia, PA
May 28, 5:30 PM EDT	HAIL 1	Sinking Spring, PA
May 28, 5:30 PM EDT	HAIL 1.25	Sinking Spring, PA
May 28, 5:32 PM EDT	HAIL 0.88	Wyomissing, PA
May 28, 5:33 PM EDT	HAIL 1.25	1 S West Wyomissing, PA
May 28, 5:35 PM EDT	HAIL 1.5	Wyomissing, PA
May 28, 5:36 PM EDT	HAIL 1	Wyomissing, PA
May 28, 5:36 PM EDT	HAIL 1.75	Wyomissing, PA
May 28, 5:45 PM EDT	HAIL 1.75	West Lawn, PA
May 28, 5:50 PM EDT	HAIL 1	Reading, PA
May 28, 5:52 PM EDT	TORNADO	Morgantown, PA	MAXIMUM EF SCALE RATING EF2 WITH ESTIMATED MAXIMUM WINDS OF 120 MPH.
May 28, 5:53 PM EDT	HAIL 1.75	3 Ene New Morgan, PA	TIME ESTIMATED FROM RADAR.
May 28, 5:55 PM EDT	HAIL 2	Morgantown, PA
May 28, 5:55 PM EDT	TORNADO	Morgantown, PA	SIGNIFICANT ROOF AND TREE DAMAGE REPORTED IN MORGANTOWN. TIME ESTIMATED FROM RADAR.
May 28, 5:56 PM EDT	TSTM WND DMG	Caernarvon Twp, PA	POSSIBLE TORNADO DAMAGE IN CAERNARVON TWP AND MORGANTOWN WITH BUILDINGS AND HOMES DAMAGED AND NUMEROUS TREES DOWN. TIME ESTIMATED FROM RADAR.
May 28, 6:04 PM EDT	HAIL 1.5	2 Nnw New Morgan, 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, 9.1 hours before the alert went out and 194 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.

407 
WUUS51 KPHI 282108
SVRPHI
PAC011-282215-
/O.NEW.KPHI.SV.W.0058.190528T2108Z-190528T2215Z/

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

The National Weather Service in Mount Holly NJ has issued a

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

* Until 615 PM EDT.

* At 507 PM EDT, a severe thunderstorm was located over Womelsdorf,
  or 9 miles east of Myerstown, moving southeast at 20 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...
  Reading, Wyomissing, Birdsboro, Sinking Spring, Womelsdorf,
  Wernersville, Newmanstown, New Morgan, Spring Ridge, Shillington,
  West Reading, Mount Penn, Mohnton, Kenhorst, St. Lawrence,
  Wyomissing Hills, West Lawn, Lorane, Reiffton and Amity Gardens.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 1000 PM EDT for eastern and
southeastern 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 4044 7606 4026 7569 4025 7569 4014 7587
      4031 7614 4036 7621 4037 7623
TIME...MOT...LOC 2107Z 318DEG 18KT 4034 7614 

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

Gorse

2 follow-up statements

636 
WWUS51 KPHI 282128
SVSPHI

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

PAC011-282215-
/O.CON.KPHI.SV.W.0058.000000T0000Z-190528T2215Z/
Berks PA-
528 PM EDT Tue May 28 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN BERKS COUNTY...

At 527 PM EDT, a severe thunderstorm was located near Reading, moving
southeast at 30 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...
Reading, Wyomissing, Birdsboro, Sinking Spring, Wernersville, New
Morgan, Spring Ridge, Shillington, West Reading, Mount Penn, Mohnton,
Kenhorst, St. Lawrence, Wyomissing Hills, West Lawn, Lorane,
Reiffton, Amity Gardens, Whitfield and West Wyomissing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4039 7597 4026 7569 4025 7569 4014 7587
      4031 7614 4035 7619
TIME...MOT...LOC 2127Z 303DEG 26KT 4025 7595 

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

Gorse

941 
WWUS51 KPHI 282148
SVSPHI

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

PAC011-282215-
/O.CON.KPHI.SV.W.0058.000000T0000Z-190528T2215Z/
Berks PA-
548 PM EDT Tue May 28 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN BERKS COUNTY...

At 547 PM EDT, a severe thunderstorm was located over Elverson, or 12
miles south of Reading, moving southeast at 30 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters.

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...
Birdsboro, New Morgan, Lorane, Amity Gardens, Flying Hills and
Reiffton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect until 1000 PM EDT for eastern and
southeastern 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 4032 7583 4026 7569 4025 7569 4014 7587
      4024 7602
TIME...MOT...LOC 2147Z 319DEG 26KT 4016 7584 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks	63 min
May 28, 4:56 PM EDT	Special Weather Statement	PHI	Chester	49 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.