Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 210, NWS Philadelphia/Mount Holly

August 19, 2009Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 19, 2009, 5:08 PM EDT for Carbon County, Pennsylvania. It was in force for 37 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 19, 2009, 5:08 PM EDT (21:08 UTC)
Expired
Aug 19, 2009, 5:45 PM EDT
In force
37 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Carbon County, PA

The radar

The Binghamton radar (KBGM), 142 km from the middle of the area, began a volume at 21:09 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.1 hours before the alert went out and 165 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, Phillips Aaf/Abe, MD at 12:00Z on 2009-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 277 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, Phillips Aaf/Abe, MD at 12:00Z on 2009-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.1939Sfc1 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
277 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 192108
SVRPHI
PAC025-192215-
/O.NEW.KPHI.SV.W.0210.090819T2108Z-090819T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
508 PM EDT WED AUG 19 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF LEHIGHTON...

* UNTIL 615 PM EDT

* AT 507 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR WEATHERLY...OR 11 MILES
  NORTHWEST OF LEHIGHTON...AND MOVING EAST AT 70 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHRISTMANS...JIM THORPE AND 7 MILES NORTH OF LEHIGHTON AROUND 515
  PM EDT...
  BELTZVILLE STATE PARK AND 6 MILES SOUTH OF ALBRIGHTSVILLE AROUND
  520 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4103 7557 4083 7559 4077 7574 4084 7594
      4089 7599 4093 7597 4095 7588 4098 7584
      4100 7575 4103 7575
TIME...MOT...LOC 2108Z 273DEG 60KT 4094 7585

$$

EBERWINE
2 follow-up statements
000 
WWUS51 KPHI 192126
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
526 PM EDT WED AUG 19 2009

PAC025-192215-
/O.CON.KPHI.SV.W.0210.000000T0000Z-090819T2215Z/
CARBON PA-
526 PM EDT WED AUG 19 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR CARBON COUNTY...

AT 522 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR JIM THORPE...OR 7
MILES NORTH OF LEHIGHTON...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES NORTH OF WEISSPORT BY 530 PM EDT...
  CHRISTMANS...6 MILES NORTH OF WEISSPORT EAST AND 6 MILES NORTH OF
  PARRYVILLE BY 535 PM EDT...
  7 MILES SOUTH OF ALBRIGHTSVILLE BY 540 PM EDT...
  BELTZVILLE STATE PARK BY 545 PM EDT...

LAT...LON 4086 7589 4092 7591 4094 7586 4095 7580
      4098 7576 4101 7569 4103 7559 4102 7557
      4083 7559 4077 7574
TIME...MOT...LOC 2125Z 276DEG 19KT 4092 7573

$$

EBERWINE
000 
WWUS51 KPHI 192145
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
545 PM EDT WED AUG 19 2009

PAC025-192154-
/O.CAN.KPHI.SV.W.0210.000000T0000Z-090819T2215Z/
CARBON PA-
545 PM EDT WED AUG 19 2009

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CARBON COUNTY IS
CANCELLED...

THE STORMS HAVE WEAKENED BUT STILL CONTAIN HEAVY RAINFALL AND
FREQUENT LIGHTNING. 

LAT...LON 4086 7589 4092 7591 4094 7586 4095 7580
      4098 7576 4101 7569 4103 7559 4102 7557
      4083 7559 4077 7574
TIME...MOT...LOC 2144Z 276DEG 19KT 4091 7560

$$

EBERWINE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 8:35 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery, Philadelphia70 min
Aug 19, 4:30 PM EDTAreal Flood AdvisoryPHIMonroe2 hr
Aug 19, 4:35 PM EDTSevere Thunderstorm WarningPHIMonroe55 min
Aug 19, 5:04 PM EDTFlash Flood WarningPHIMonroe115 min
Aug 19, 5:51 PM EDTAreal Flood AdvisoryPHICarbon114 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2009Every severe thunderstorm warning in 2009

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.