Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 42, NWS Philadelphia/Mount Holly

May 27, 2010Monroe County, Northampton County, Pennsylvania; Morris County, Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2010, 5:36 PM EDT for Monroe County, Northampton County, Pennsylvania; Morris County, Sussex County, Warren County, New Jersey. It was in force for 54 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: May 27, 2010, 5:36 PM EDT (21:36 UTC)
Expired: May 27, 2010, 6:30 PM EDT
In force: 54 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 138 km from the middle of the area, began a volume at 21:37 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
May 27, 1:23 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 193 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: 4 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 5 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.

343 
WUUS51 KPHI 272136
SVRPHI
NJC027-037-041-PAC089-095-272230-
/O.NEW.KPHI.SV.W.0042.100527T2136Z-100527T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
536 PM EDT THU MAY 27 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF MOUNT POCONO...
  WEST CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOUTHWESTERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  NORTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 630 PM EDT

* AT 534 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 8 MILES
  NORTHEAST OF SKYTOP...OR 17 MILES NORTHEAST OF MOUNT POCONO...AND
  MOVING SOUTH AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GOULDSBORO STATE PARK...TOBYHANNA...CANADENSIS...MOUNTAINHOME...
  POCONO PINES...PARADISE VALLEY...ALPINE MOUNTAIN...HERNYVILLE...
  SCOTRUN...FLATBROOKVILLE...ANALOMINK...ECHO LAKE...REEDERS...EAST
  STROUDSBURG...DELAWARE WATER GAP...STORMVILLE...BLAIRSTOWN...
  COLUMBIA...EAST BANGOR...HOPE...PEN ARGYL...BANGOR...
  ALLAMUCHY-PANTHER VALLEY...ROXBURG...HARMONY...OXFORD...GREAT
  MEADOWS-VIENNA AND BELVIDERE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4124 7513 4116 7516 4115 7509 4109 7503
      4111 7495 4114 7492 4089 7476 4070 7519
      4122 7554 4125 7550 4125 7531 4126 7514
TIME...MOT...LOC 2136Z 349DEG 30KT 4131 7517

$$

PO

1 follow-up statement

619 
WWUS51 KPHI 272223
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
623 PM EDT THU MAY 27 2010

NJC027-037-041-PAC089-095-272230-
/O.CON.KPHI.SV.W.0042.000000T0000Z-100527T2230Z/
SUSSEX NJ-WARREN NJ-MORRIS NJ-NORTHAMPTON PA-MONROE PA-
623 PM EDT THU MAY 27 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR MONROE...NORTHEASTERN NORTHAMPTON...WEST CENTRAL MORRIS...
NORTHERN WARREN AND SOUTHWESTERN SUSSEX COUNTIES...

AT 621 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR DELAWARE WATER GAP...OR 14 MILES SOUTHEAST OF MOUNT
POCONO...MOVING SOUTH AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
STROUDSBURG...DELAWARE WATER GAP...STORMVILLE...BLAIRSTOWN...
SAYLORSBURG...ROXBURG...HOPE...HARMONY...COLUMBIA...ROSETO...
PORTLAND...PEN ARGYL...EAST BANGOR...BANGOR...OXFORD...GREAT
MEADOWS...GREAT MEADOWS-VIENNA...BELVIDERE...ALLAMUCHY AND
ALLAMUCHY-PANTHER VALLEY

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
THURSDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4124 7513 4116 7516 4115 7509 4109 7503
      4111 7495 4114 7492 4089 7476 4070 7519
      4122 7554 4125 7550 4125 7531 4126 7514
TIME...MOT...LOC 2223Z 351DEG 23KT 4100 7513

$$

PO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 2:00 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Monroe, Northampton	60 min
May 27, 2:30 PM EDT	Flash Flood Warning	PHI	Northampton	33 min
May 27, 2:45 PM EDT	Special Weather Statement	PHI	Chester	60 min
May 27, 3:19 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	41 min
May 27, 4:53 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	52 min
May 27, 5:11 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	64 min
May 27, 5:44 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery	61 min
May 27, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	37 min
May 27, 6:05 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	25 min
May 27, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh, Montgomery	55 min
May 27, 6:35 PM EDT	Special Weather Statement	PHI	Northampton	55 min
May 27, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	48 min
May 27, 7:25 PM EDT	Special Weather Statement	PHI	Montgomery	65 min
May 27, 7:40 PM EDT	Special Weather Statement	PHI	Bucks	65 min
May 27, 7:44 PM EDT	Areal Flood Advisory	PHI	Berks, Chester, Montgomery	3 hr
May 27, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	34 min
May 27, 4:05 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean	19 hr
May 27, 1:55 PM EDT	Special Weather Statement	PHI	Warren	65 min
May 27, 3:25 PM EDT	Small Craft Advisory for Hazardous Seas	PHI		12 hr
May 27, 3:36 PM EDT	Special Weather Statement	PHI	Sussex, Warren	54 min
May 27, 4:20 PM EDT	Special Weather Statement	PHI	Sussex	55 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2010 Severe Thunderstorm Warnings in Pennsylvania, 2010 Every severe thunderstorm warning in 2010

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.