Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 180, NWS Philadelphia/Mount Holly

August 22, 2017Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 22, 2017, 7:57 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 22, 2017, 7:57 PM EDT (23:57 UTC)
Expired
Aug 22, 2017, 8:45 PM EDT
In force
48 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 130 km from the middle of the area, began a volume at 23:55 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 22, 4:19 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 12.0 hours before the alert went out and 238 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2017-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 630 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2017-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
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

Open this sounding in Storm Lab

The text

As transmitted.

667 
WUUS51 KPHI 222357
SVRPHI
PAC025-089-230045-
/O.NEW.KPHI.SV.W.0180.170822T2357Z-170823T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
757 PM EDT TUE AUG 22 2017

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Carbon County in northeastern Pennsylvania...
  Northwestern Monroe County in northeastern Pennsylvania...

* Until 845 PM EDT

* At 756 PM EDT, a severe thunderstorm was located over Mcadoo, or
  near Hazleton, 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...
  Weatherly, Pocono Pines, Pocono Raceway, Lake Harmony, Blakeslee,
  Long Pond, Albrightsville, Christmans, Arrowhead Lake,
  Stoddartsville, Meckesville, Beaver Meadows and Tresckow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4103 7536 4085 7593 4091 7599 4098 7582
      4101 7573 4103 7574 4105 7577 4109 7577
      4113 7569 4112 7565 4120 7557 4122 7553
TIME...MOT...LOC 2356Z 245DEG 29KT 4090 7597 

HAIL...1.00IN
WIND...60MPH
 
$$

MWG
2 follow-up statements
707 
WWUS51 KPHI 230017
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
817 PM EDT TUE AUG 22 2017

PAC025-089-230045-
/O.CON.KPHI.SV.W.0180.000000T0000Z-170823T0045Z/
Carbon PA-Monroe PA-
817 PM EDT TUE AUG 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHEASTERN CARBON AND NORTHWESTERN MONROE COUNTIES...

At 817 PM EDT, a severe thunderstorm was located near Weatherly, or
10 miles north 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...
Jim Thorpe, Weatherly, Blakeslee, Long Pond, Albrightsville, Pocono
Pines, Pocono Raceway, Lake Harmony, Christmans, Arrowhead Lake,
Stoddartsville and Meckesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4088 7582 4093 7587 4098 7582 4101 7573
      4103 7574 4105 7577 4109 7577 4113 7569
      4112 7565 4120 7557 4122 7553 4103 7536
TIME...MOT...LOC 0017Z 245DEG 29KT 4097 7576 

HAIL...1.00IN
WIND...60MPH
 
$$

MWG
239 
WWUS51 KPHI 230037
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
837 PM EDT TUE AUG 22 2017

PAC025-089-230046-
/O.EXP.KPHI.SV.W.0180.000000T0000Z-170823T0045Z/
Carbon PA-Monroe PA-
837 PM EDT TUE AUG 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CARBON AND
NORTHWESTERN MONROE COUNTIES WILL EXPIRE AT 845 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

A severe thunderstorm watch remains in effect until midnight EDT for
northeastern Pennsylvania.

LAT...LON 4088 7582 4093 7587 4098 7582 4101 7573
      4103 7574 4105 7577 4109 7577 4113 7569
      4112 7565 4120 7557 4122 7553 4103 7536
TIME...MOT...LOC 0036Z 245DEG 29KT 4103 7559 

$$

CMS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:29 PM EDTSpecial Weather StatementPHICarbon, Monroe31 min
Aug 22, 7:33 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Monroe, Northampton42 min
Aug 22, 7:59 PM EDTSevere Thunderstorm WarningPHIBerks, Carbon, Lehigh46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.