Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 95, NWS Philadelphia/Mount Holly

June 20, 2008Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 20, 2008, 8:28 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 35 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
Jun 20, 2008, 8:28 PM EDT (00:28 UTC)
Expired
Jun 20, 2008, 9:03 PM EDT
In force
35 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 143 km from the middle of the area, began a volume at 00:29 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.5 hours before the alert went out and 235 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 00:00Z on 2008-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 358 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 00:00Z on 2008-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939587897Sfc1 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
358 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1153 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KPHI 210029
SVRPHI
PAC025-089-210130-
/O.NEW.KPHI.SV.W.0095.080621T0028Z-080621T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
828 PM EDT FRI JUN 20 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...  
  SOUTHWESTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 930 PM EDT

* AT 825 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR WEATHERLY...OR ABOUT 21 MILES SOUTH OF
  WILKES-BARRE...AND MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JIM THORPE BY 835 PM...
  CHRISTMANS BY 840 PM...
  PENN FOREST RESERVOIR AND BELTZVILLE STATE PARK BY 850 PM...
  7 MILES NORTHEAST OF PALMERTON BY 855 PM...
  GILBERT BY 905 PM...
  ROSSLAND BY 915 PM...

LAT...LON 4089 7535 4082 7542 4080 7556 4079 7561
      4090 7589 4098 7585 4098 7581 4101 7575
      4102 7575 4105 7579 4106 7578
TIME...MOT...LOC 0028Z 293DEG 21KT 4095 7574

$$

SZATKOWSKI
1 follow-up statement
000 
WWUS51 KPHI 210103
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
901 PM EDT FRI JUN 20 2008

PAC025-089-210111-
/O.CAN.KPHI.SV.W.0095.000000T0000Z-080621T0130Z/
CARBON PA-MONROE PA-
901 PM EDT FRI JUN 20 2008

...THE SEVERE THUNDERSTORM WARNING FOR CARBON AND SOUTHWESTERN 
MONROE COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND 
IS NO LONGER SEVERE.   PERSONS IN SOUTHWESTERN MONROE COUNTY WILL 
SEE WINDS GUSTS TO 40 MILES AN HOUR AND SMALL HAIL WITH THE 
STORM...AS WELL AS FREQUENT CLOUD TO GROUND LIGHTNING.

LAT...LON 4089 7535 4082 7542 4080 7556 4079 7561
      4090 7589 4098 7585 4098 7581 4101 7575
      4102 7575 4105 7579 4106 7578
TIME...MOT...LOC 0101Z 293DEG 21KT 4087 7551

$$

SZATKOWSKI

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2008Every severe thunderstorm warning in 2008

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.