Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 77, NWS Philadelphia/Mount Holly

June 1, 2011Carbon County, Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 2011, 1:57 PM EDT for Carbon County, Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 63 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 1, 2011, 1:57 PM EDT (17:57 UTC)
Expired: Jun 1, 2011, 3:00 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Warren County, NJ, Carbon County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 17:57 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.

Issued	Product	Office	Lasted
Jun 1, 12:58 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.0 hours before the alert went out and 166 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: 2843 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1042 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 319 m²/s²
0-3 km storm-relative helicity: 336 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

060 
WUUS51 KPHI 011757
SVRPHI
NJC041-PAC025-089-095-011900-
/O.NEW.KPHI.SV.W.0077.110601T1757Z-110601T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
157 PM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF LEHIGHTON...
  SOUTHERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 300 PM EDT

* AT 153 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.  THE STORM
  WAS LOCATED ALONG A LINE EXTENDING FROM PENN FOREST RESERVOIR TO
  NESQUEHONING...OR ALONG A LINE EXTENDING FROM 9 MILES NORTHEAST
  OF LEHIGHTON TO LEHIGHTON...AND MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORM WILL BE NEAR...
  BELTZVILLE STATE PARK AROUND 205 PM EDT...
  BRODHEADSVILLE...WALNUTPORT...GILBERT AND PALMERTON AROUND 210 PM
  EDT...
  STORMVILLE...BEERSVILLE...SAYLORSBURG AND ROSSLAND AROUND 225 PM
  EDT...
  EAST STROUDSBURG AROUND 230 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4100 7486 4098 7485 4070 7531 4076 7562
      4079 7563 4077 7570 4080 7587 4083 7592
      4105 7558
TIME...MOT...LOC 1756Z 270DEG 30KT 4092 7558 4085 7578

$$

MPD

1 follow-up statement

781 
WWUS51 KPHI 011827
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
227 PM EDT WED JUN 1 2011

NJC041-PAC025-089-095-011900-
/O.CON.KPHI.SV.W.0077.000000T0000Z-110601T1900Z/
WARREN NJ-NORTHAMPTON PA-CARBON PA-MONROE PA-
227 PM EDT WED JUN 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHERN MONROE...EASTERN CARBON...NORTHERN NORTHAMPTON AND
NORTHERN WARREN COUNTIES...

AT 222 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED NEAR 
AN AREA FROM SAYLORSBURG TO ROSSLAND...OR NEAR AN AREA FROM ABOUT 15 
MILES SOUTH OF MOUNT POCONO TO AROUND 10 MILES EAST OF 
LEHIGHTON...MOVING EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BATH BY 230 PM EDT...
  DELAWARE WATER GAP BY 235 PM EDT...
  PORTLAND...COLUMBIA...NAZARETH AND EASTLAWN GARDENS BY 240 PM
  EDT...
  TATAMY...STOCKERTOWN AND BANGOR BY 245 PM EDT...
  BLAIRSTOWN BY 250 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING
FOR NEW JERSEY AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH
ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING FOR
DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.

&&

LAT...LON 4099 7487 4098 7485 4070 7531 4075 7554
      4083 7558 4085 7563 4096 7563 4100 7566
      4105 7558
TIME...MOT...LOC 1826Z 270DEG 30KT 4092 7525 4085 7545

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 12:56 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	60 min
Jun 1, 2:42 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh	52 min
Jun 1, 3:08 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	16 min
Jun 1, 4:15 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	45 min
Jun 1, 4:55 PM EDT	Severe Thunderstorm Warning	PHI	Chester	26 min
Jun 1, 3:26 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Jun 1, 4:00 PM EDT	Small Craft Advisory	PHI		35 hr
Jun 1, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	40 min
Jun 1, 4:31 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	59 min
Jun 1, 4:59 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	61 min
Jun 1, 5:23 PM EDT	Special Weather Statement	PHI	Salem	67 min
Jun 1, 5:50 PM EDT	Special Marine Warning	PHI		40 min
Jun 1, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	64 min
Jun 1, 6:42 PM EDT	Special Marine Warning	PHI		63 min
Jun 1, 7:22 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	43 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011 Severe Thunderstorm Warnings in New Jersey, 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.