Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 127, NWS Philadelphia/Mount Holly

June 24, 2011Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 24, 2011, 2:32 PM EDT for Monroe County, Pennsylvania. It was in force for 43 min. 2 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: Jun 24, 2011, 2:32 PM EDT (18:32 UTC)
Expired: Jun 24, 2011, 3:15 PM EDT
In force: 43 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Monroe County, PA

The radar

The Philadelphia radar (KDIX), 142 km from the middle of the area, began a volume at 18:35 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
Jun 24, 3:00 PM EDT	TSTM WND DMG	Stroud Twp, PA	A COUPLE OF TREES DOWN
Jun 24, 3:09 PM EDT	TSTM WND DMG	East Stroudsburg, PA	A COUPLE OF TREES DOWN. A COUPLE OF HOMES STRUCK BY LIGHTNING IN THE COUNTY... BUT NO DAMAGE REPORTED.

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
Jun 24, 12:46 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.5 hours before the alert went out and 189 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: 822 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

622 
WUUS51 KPHI 241832
SVRPHI
PAC089-241915-
/O.NEW.KPHI.SV.W.0127.110624T1832Z-110624T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
232 PM EDT FRI JUN 24 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF MOUNT POCONO...

* UNTIL 315 PM EDT

* AT 229 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
  REEDERS...OR 8 MILES SOUTH OF MOUNT POCONO...AND MOVING EAST AT 25
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  REEDERS AND SCOTRUN AROUND 240 PM EDT...
  STORMVILLE AROUND 250 PM EDT...
  ANALOMINK...HERNYVILLE AND ALPINE MOUNTAIN AROUND 255 PM EDT...
  EAST STROUDSBURG AROUND 300 PM EDT...
  DELAWARE WATER GAP AROUND 305 PM EDT...
  ECHO LAKE AROUND 315 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FRIDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

&&

LAT...LON 4116 7515 4115 7509 4112 7506 4103 7504
      4100 7511 4096 7515 4091 7524 4087 7549
      4098 7551 4099 7550 4100 7551 4108 7553
      4118 7515
TIME...MOT...LOC 1831Z 260DEG 20KT 4101 7539

$$

SZATKOWSKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 9:59 PM EDT	Special Weather Statement	PHI	Berks	61 min
Jun 23, 10:41 PM EDT	Special Weather Statement	PHI	Lehigh	64 min
Jun 23, 10:47 PM EDT	Special Weather Statement	PHI	Carbon	58 min
Jun 23, 10:56 PM EDT	Special Weather Statement	PHI	Lebanon	64 min
Jun 23, 10:58 PM EDT	Special Weather Statement	PHI	Berks	62 min
Jun 23, 11:19 PM EDT	Areal Flood Advisory	PHI	Lehigh, Northampton	116 min
Jun 23, 11:28 PM EDT	Special Weather Statement	PHI	Northampton	62 min
Jun 23, 11:30 PM EDT	Special Weather Statement	PHI	Monroe	60 min
Jun 23, 11:37 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	53 min
Jun 23, 11:46 PM EDT	Special Weather Statement	PHI	Berks	59 min
Jun 24, 12:08 AM EDT	Areal Flood Advisory	PHI	Northampton	112 min
Jun 24, 1:22 AM EDT	Special Weather Statement	PHI	Bucks	53 min
Jun 24, 3:41 AM EDT	Flash Flood Watch	PHI	Carbon, Lehigh, Monroe, Northampton	16 hr
Jun 24, 12:26 PM EDT	Special Weather Statement	PHI	Berks	64 min
Jun 24, 1:41 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	64 min
Jun 24, 3:54 PM EDT	Special Weather Statement	PHI	Monroe	66 min
Jun 24, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	55 min
Jun 24, 6:27 PM EDT	Special Weather Statement	PHI	Bucks	63 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.