Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 197, NWS Philadelphia/Mount Holly

July 25, 2011Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 25, 2011, 12:19 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 56 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: Jul 25, 2011, 12:19 PM EDT (16:19 UTC)
Expired: Jul 25, 2011, 1:15 PM EDT
In force: 56 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 16:22 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, 4.3 hours before the alert went out and 168 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 481 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 760 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 24 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.

489 
WUUS51 KPHI 251619
SVRPHI
PAC025-089-251715-
/O.NEW.KPHI.SV.W.0197.110725T1619Z-110725T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1219 PM EDT MON JUL 25 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 115 PM EDT

* AT 1216 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  JIM THORPE...OR 7 MILES NORTHWEST OF LEHIGHTON...AND MOVING EAST AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  JIM THORPE AROUND 1230 PM EDT...
  CHRISTMANS AROUND 1240 PM EDT...
  CHRISTMANS AROUND 1245 PM EDT...
  BELTZVILLE STATE PARK AROUND 1255 PM EDT...
  PENN FOREST RESERVOIR AROUND 100 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 4102 7541 4081 7547 4079 7561 4085 7585
      4097 7578 4101 7575 4103 7576
TIME...MOT...LOC 1618Z 281DEG 13KT 4092 7577

$$

KRUZDLO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 10:53 PM EDT	Special Weather Statement	PHI	Schuylkill	67 min
Jul 25, 6:19 AM EDT	Special Weather Statement	PHI	Monroe	56 min
Jul 25, 10:30 AM EDT	Special Weather Statement	PHI	Monroe	90 min
Jul 25, 11:51 AM EDT	Special Weather Statement	PHI	Berks	54 min
Jul 25, 11:58 AM EDT	Special Weather Statement	PHI	Carbon, Monroe	62 min
Jul 25, 12:45 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	60 min
Jul 25, 12:59 PM EDT	Areal Flood Advisory	PHI	Carbon	2 hr
Jul 25, 1:34 PM EDT	Special Weather Statement	PHI	Berks	56 min
Jul 25, 3:01 PM EDT	Special Weather Statement	PHI	Northampton	59 min
Jul 25, 4:25 PM EDT	Flash Flood Warning	PHI	Northampton	3 hr
Jul 25, 4:31 PM EDT	Areal Flood Advisory	PHI	Bucks, Northampton	3 hr
Jul 25, 5:18 PM EDT	Flash Flood Warning	PHI	Lehigh, Northampton	3 hr
Jul 25, 5:18 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	57 min
Jul 25, 5:49 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	93 min
Jul 25, 5:57 PM EDT	Special Weather Statement	PHI	Berks	63 min
Jul 25, 6:23 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	3 hr
Jul 25, 7:13 PM EDT	Special Weather Statement	PHI	Delaware	62 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011 Every severe thunderstorm warning in 2011

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.