Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 176, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 19, 2017, 8:01 PM EDT for Berks County, Pennsylvania. It was in force for 59 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
- Aug 19, 2017, 8:01 PM EDT (00:01 UTC)
- Expired
- Aug 19, 2017, 9:00 PM EDT
- In force
- 59 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), 154 km from the middle of the area, began a volume at 00:03 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 |
|---|---|---|---|
| Aug 19, 8:34 PM EDT | TSTM WND DMG | Bern Twp, PA | TREES AND WIRES BLOWN DOWN |
| Aug 19, 8:40 PM EDT | TSTM WND GST 40 | Reading Regional Airpor, PA | |
| Aug 19, 8:41 PM EDT | TSTM WND DMG | Laureldale, PA | TREES AND WIRES BLOWN DOWN. TIME ESTIMATED FROM RADAR. |
| Aug 19, 8:51 PM EDT | TSTM WND GST 54 | Fleetwood, PA |
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 00:00Z, 0.0 hours before the alert went out and 202 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
- 675 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1697 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.8
The text
As transmitted.
176
WUUS51 KPHI 200001
SVRPHI
PAC011-200100-
/O.NEW.KPHI.SV.W.0176.170820T0001Z-170820T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
801 PM EDT SAT AUG 19 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Berks County in eastern Pennsylvania...
* Until 900 PM EDT
* At 801 PM EDT, a severe thunderstorm was located near
Lebanon, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Reading, Wyomissing, Birdsboro, Kutztown, Hamburg, Fleetwood,
Sinking Spring, Laureldale, Womelsdorf, Wernersville, Newmanstown,
Leesport, Shoemakersville, Elverson, Bernville, Lyons, Strausstown,
Lenhartsville, New Morgan and Spring Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
4064 7598 4068 7589 4058 7573 4018 7579
4014 7587 4031 7614 4036 7621 4037 7623
4049 7643
TIME...MOT...LOC 0001Z 277DEG 34KT 4041 7647
HAIL...<.75IN
WIND...60MPH
$$
Iovino1 follow-up statement
500
WWUS51 KPHI 200022
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
822 PM EDT SAT AUG 19 2017
PAC011-200100-
/O.CON.KPHI.SV.W.0176.000000T0000Z-170820T0100Z/
Berks PA-
822 PM EDT SAT AUG 19 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR BERKS COUNTY...
At 822 PM EDT, severe thunderstorms were located along a line
extending from Schuylkill Haven to near Brickerville, moving east at
40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Reading, Wyomissing, Birdsboro, Kutztown, Hamburg, Fleetwood, Sinking
Spring, Laureldale, Womelsdorf, Wernersville, Newmanstown, Leesport,
Shoemakersville, Elverson, Bernville, Lyons, Strausstown,
Lenhartsville, New Morgan and Spring Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4052 7634 4052 7625 4058 7605 4057 7602
4064 7598 4068 7589 4058 7573 4018 7579
4014 7587 4031 7614 4036 7621 4037 7623
4049 7643
TIME...MOT...LOC 0022Z 274DEG 35KT 4061 7618 4021 7624
HAIL...<.75IN
WIND...60MPH
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 8:34 PM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Montgomery | 56 min |
| Aug 19, 9:00 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more | 60 min |
| Aug 19, 9:29 PM EDT | Special Weather Statement | PHI | Monroe | 31 min |
| Aug 19, 9:35 PM EDT | Special Weather Statement | PHI | Bucks, Delaware, Montgomery, Philadelphia | 25 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2017Every severe thunderstorm warning in 2017
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.