Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 181, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 22, 2017, 7:59 PM EDT for Berks County, Carbon County, Lehigh County, Pennsylvania. It was in force for 46 min. 6 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 22, 2017, 7:59 PM EDT (23:59 UTC)
- Expired
- Aug 22, 2017, 8:45 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 149 km from the middle of the area, began a volume at 00:00 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 22, 8:05 PM EDT | TSTM WND DMG | Bethel Twp, PA | NUMEROUS TREES DOWN. |
| Aug 22, 8:30 PM EDT | TSTM WND DMG | Perry Twp, PA | TREES DOWN WITH SOME BLOCKING ROADS. TIMES ESTIMATED FROM RADAR. |
| Aug 22, 8:40 PM EDT | TSTM WND GST 47 | Shoemakersville, PA | |
| Aug 22, 8:45 PM EDT | TSTM WND DMG | 3 W Fleetwood, PA | TREES SNAPPED AND SOME UPROOTED. |
| Aug 22, 8:50 PM EDT | TSTM WND GST 50 | Kutztown, PA | THUNDERSTORM WIND GUSTS ESTIMATED TO AROUND 50 MPH. |
| Aug 22, 8:50 PM EDT | HAIL 0.75 | Kutztown, 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 |
|---|---|---|---|
| Aug 22, 4:19 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 12.0 hours before the alert went out and 219 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
- 306 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1320 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
165
WUUS51 KPHI 222359
SVRPHI
PAC011-025-077-230045-
/O.NEW.KPHI.SV.W.0181.170822T2359Z-170823T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
759 PM EDT TUE AUG 22 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Berks County in eastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
South central Carbon County in northeastern Pennsylvania...
* Until 845 PM EDT
* At 759 PM EDT, severe thunderstorms were located along a line
extending from Girardville to near Harper Tavern, moving east at 55
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
* Locations impacted include...
Allentown, Reading, Wyomissing, Northampton, Birdsboro, Kutztown,
Hamburg, Slatington, Fleetwood, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Newmanstown, Walnutport, Topton,
Leesport, Shoemakersville, Bernville and Lyons.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4049 7643 4052 7634 4052 7625 4058 7605
4057 7602 4065 7598 4070 7583 4080 7568
4076 7560 4074 7559 4072 7552 4066 7548
4015 7589 4036 7621
TIME...MOT...LOC 2359Z 273DEG 49KT 4078 7630 4041 7662
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
MWG3 follow-up statements
580
WWUS51 KPHI 230018
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
818 PM EDT TUE AUG 22 2017
PAC011-025-077-230045-
/O.CON.KPHI.SV.W.0181.000000T0000Z-170823T0045Z/
Berks PA-Lehigh PA-Carbon PA-
818 PM EDT TUE AUG 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR BERKS...LEHIGH AND SOUTH CENTRAL CARBON COUNTIES...
At 818 PM EDT, severe thunderstorms were located along a line
extending from near Tamaqua to Myerstown, moving east at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect damage to
trees and power lines.
Locations impacted include...
Allentown, Reading, Wyomissing, Northampton, Birdsboro, Kutztown,
Hamburg, Slatington, Fleetwood, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Newmanstown, Walnutport, Topton, Leesport,
Shoemakersville, Bernville and Lyons.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4049 7643 4052 7634 4052 7625 4058 7605
4057 7602 4065 7598 4070 7583 4080 7568
4076 7560 4074 7559 4072 7552 4066 7548
4015 7589 4036 7621
TIME...MOT...LOC 0018Z 273DEG 49KT 4077 7598 4040 7630
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
MWG623
WWUS51 KPHI 230026
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
826 PM EDT TUE AUG 22 2017
PAC011-025-077-230045-
/O.CON.KPHI.SV.W.0181.000000T0000Z-170823T0045Z/
Berks PA-Lehigh PA-Carbon PA-
826 PM EDT TUE AUG 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR BERKS...LEHIGH AND SOUTH CENTRAL CARBON COUNTIES...
At 826 PM EDT, severe thunderstorms were located along a line
extending from near Snyders to near Womelsdorf, moving east at 55
mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated. Trees were also reported down in Bethel.
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...
Allentown, Reading, Wyomissing, Northampton, Birdsboro, Kutztown,
Hamburg, Slatington, Fleetwood, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Newmanstown, Walnutport, Topton, Leesport,
Shoemakersville, Bernville and Lyons.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4049 7643 4052 7634 4052 7625 4058 7605
4057 7602 4065 7598 4070 7583 4080 7568
4076 7560 4074 7559 4072 7552 4066 7548
4015 7589 4036 7621
TIME...MOT...LOC 0026Z 273DEG 49KT 4077 7587 4040 7619
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
$$
MWG996
WWUS51 KPHI 230032
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
832 PM EDT TUE AUG 22 2017
PAC011-025-077-230045-
/O.CON.KPHI.SV.W.0181.000000T0000Z-170823T0045Z/
Berks PA-Lehigh PA-Carbon PA-
832 PM EDT TUE AUG 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR BERKS...LEHIGH AND SOUTH CENTRAL CARBON COUNTIES...
At 832 PM EDT, severe thunderstorms were located along a line
extending from near New Mahoning to near Bernville, moving east at 55
mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
Locations impacted include...
Allentown, Reading, Wyomissing, Northampton, Birdsboro, Kutztown,
Hamburg, Slatington, Fleetwood, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Newmanstown, Walnutport, Topton, Leesport,
Shoemakersville, Bernville and Lyons.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4049 7643 4052 7634 4052 7625 4058 7605
4057 7602 4065 7598 4070 7583 4080 7568
4076 7560 4074 7559 4072 7552 4066 7548
4015 7589 4036 7621
TIME...MOT...LOC 0032Z 273DEG 49KT 4077 7578 4040 7610
TORNADO...POSSIBLE
HAIL...1.75IN
WIND...70MPH
$$
MWGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:29 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 31 min |
| Aug 22, 7:33 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 42 min |
| Aug 22, 7:57 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 48 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.