Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 179, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 22, 2017, 7:33 PM EDT for 4 counties in Pennsylvania. It was in force for 42 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
- Aug 22, 2017, 7:33 PM EDT (23:33 UTC)
- Expired
- Aug 22, 2017, 8:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 23:34 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, 7:44 PM EDT | TSTM WND DMG | Franklin Twp, PA | SEVERAL TREES BLOWN DOWN . TIME ESTIMATED FROM RADAR. |
| Aug 22, 7:45 PM EDT | TSTM WND DMG | Walcksville, PA | TREES AND WIRES DOWN ALONG LONG RUN ROAD IN FRANKLIN TOWNSHIP. TIME ESTIMATED FROM RADAR. |
| Aug 22, 8:13 PM EDT | TSTM WND DMG | Gilbert, PA | TREES REPORTED DOWN NEAR THE WEST END FAIRGROUNDS IN GILBERT. TIME ESTIMATED FROM RADAR |
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
Brookhaven, NY (KOKX), launched 12:00Z, 11.6 hours before the alert went out and 224 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
- 630 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.9
The text
As transmitted.
668
WUUS51 KPHI 222333
SVRPHI
PAC025-077-089-095-230015-
/O.NEW.KPHI.SV.W.0179.170822T2333Z-170823T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
733 PM EDT TUE AUG 22 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Lehigh County in eastern Pennsylvania...
Southeastern Carbon County in northeastern Pennsylvania...
Southwestern Monroe County in northeastern Pennsylvania...
Northern Northampton County in eastern Pennsylvania...
* Until 815 PM EDT
* At 733 PM EDT, a severe thunderstorm was located over Lehighton,
moving northeast at 40 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...
Lehighton, East Stroudsburg, Palmerton, Bangor, Jim Thorpe,
Slatington, Pen Argyl, Wind Gap, East Bangor, Delaware Water Gap,
Stormville, Brodheadsville, Kunkletown, Gilbert, Tannersville,
Rossland, Hernyville, Kresgeville, Sun Valley and Jonas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4074 7576 4089 7582 4112 7520 4087 7510
TIME...MOT...LOC 2333Z 246DEG 33KT 4084 7573
HAIL...1.00IN
WIND...60MPH
$$
MWG1 follow-up statement
020
WWUS51 KPHI 222352
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
752 PM EDT TUE AUG 22 2017
PAC077-230001-
/O.CAN.KPHI.SV.W.0179.000000T0000Z-170823T0015Z/
Lehigh PA-
752 PM EDT TUE AUG 22 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LEHIGH COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A severe thunderstorm watch remains in effect until midnight EDT for
eastern and northeastern Pennsylvania.
LAT...LON 4083 7564 4095 7566 4112 7520 4093 7512
TIME...MOT...LOC 2351Z 245DEG 29KT 4089 7558
$$
PAC025-089-095-230015-
/O.CON.KPHI.SV.W.0179.000000T0000Z-170823T0015Z/
Carbon PA-Monroe PA-Northampton PA-
752 PM EDT TUE AUG 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR EAST CENTRAL CARBON...SOUTHWESTERN MONROE AND NORTHERN
NORTHAMPTON COUNTIES...
At 751 PM EDT, a severe thunderstorm was located over Beltzville
State Park, or 8 miles northeast of Lehighton, moving northeast at 35
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...
East Stroudsburg, Stormville, Reeders, Brodheadsville, Beltzville
State Park, Saylorsburg, Gilbert, Analomink, McMichael, Tannersville,
Scotrun, Penn Forest Reservoir, Hernyville, Kresgeville, Sun Valley,
Jonas, Delaware Water Gap, Stroudsburg, Arlington Heights and Effort.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4083 7564 4095 7566 4112 7520 4093 7512
TIME...MOT...LOC 2351Z 245DEG 29KT 4089 7558
HAIL...1.00IN
WIND...60MPH
$$
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, 7:57 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 48 min |
| Aug 22, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh | 46 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.