Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 189, NWS Philadelphia/Mount Holly

July 2, 2019Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2019, 6:28 PM EDT for Berks County, Pennsylvania. It was in force for 47 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: Jul 2, 2019, 6:28 PM EDT (22:28 UTC)
Expired: Jul 2, 2019, 7:15 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 152 km from the middle of the area, began a volume at 22:28 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
Jul 2, 6:50 PM EDT	TSTM WND DMG	North Heidelberg Twp, PA	TREES REPORTED DOWN.
Jul 2, 6:50 PM EDT	TSTM WND DMG	Spring Twp, PA	MPING REPORT OF THREE INCH TREE LIMBS OR POWER POLES BROKEN.
Jul 2, 6:51 PM EDT	TSTM WND DMG	1 Ene Heidelberg Twp, PA	WIRES DOWN. 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, 10.5 hours before the alert went out and 205 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: 1575 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

687 
WUUS51 KPHI 022228
SVRPHI
PAC011-022315-
/O.NEW.KPHI.SV.W.0189.190702T2228Z-190702T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
628 PM EDT Tue Jul 2 2019

The National Weather Service in Mount Holly NJ has issued a

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

* Until 715 PM EDT.

* At 628 PM EDT, a severe thunderstorm was located over Bernville, or
  10 miles east of Myerstown, moving east at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Reading, Wyomissing, Birdsboro, Kutztown, Hamburg, Fleetwood,
  Sinking Spring, Laureldale, Womelsdorf, Wernersville, Newmanstown,
  Leesport, Shoemakersville, Bernville, Lyons, Strausstown,
  Lenhartsville, Spring Ridge, Fairview Hgts and Shillington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4052 7629 4052 7625 4058 7605 4057 7602
      4059 7601 4062 7581 4056 7571 4021 7575
      4025 7605 4036 7621 4041 7631
TIME...MOT...LOC 2228Z 277DEG 18KT 4041 7611 

HAIL...<.75IN
WIND...60MPH
 
$$

Meola

1 follow-up statement

289 
WWUS51 KPHI 022305
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
705 PM EDT Tue Jul 2 2019

PAC011-022315-
/O.EXP.KPHI.SV.W.0189.000000T0000Z-190702T2315Z/
Berks PA-
705 PM EDT Tue Jul 2 2019

...THE SEVERE THUNDERSTORM WARNING FOR BERKS COUNTY WILL EXPIRE AT
715 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However, heavy 
rain is still possible with this thunderstorm.

LAT...LON 4052 7629 4052 7625 4058 7605 4057 7602
      4059 7601 4062 7581 4056 7571 4021 7575
      4025 7605 4036 7621 4041 7631
TIME...MOT...LOC 2305Z 277DEG 18KT 4039 7588 

$$

Meola

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 5:17 PM EDT	Severe Thunderstorm Warning	PHI	Berks	43 min
Jul 2, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery, Philadelphia	48 min
Jul 2, 7:27 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	48 min
Jul 2, 7:50 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	40 min

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.