Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 42, NWS Philadelphia/Mount Holly

May 27, 20144 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2014, 6:38 PM EDT for 4 counties in New Jersey. It was in force for 52 min. 3 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: May 27, 2014, 6:38 PM EDT (22:38 UTC)
Expired: May 27, 2014, 7:30 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 13 km from the middle of the area, began a volume at 22:38 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
May 27, 7:20 PM EDT	MARINE TSTM WIND 50	N Normandy Beach, NJ
May 27, 7:26 PM EDT	MARINE TSTM WIND 40	Surf City, NJ
May 27, 7:30 PM EDT	MARINE TSTM WIND 40	Seaside Heights, NJ

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
May 27, 5:30 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.6 hours before the alert went out and 157 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1885 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 94 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 272238
SVRPHI
NJC005-007-025-029-272330-
/O.NEW.KPHI.SV.W.0042.140527T2238Z-140527T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
638 PM EDT TUE MAY 27 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 730 PM EDT

* AT 634 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED. THESE
  SEVERE STORMS EXTENDED FROM IMLAYSTOWN TO BROWNS MILLS TO
  CLEMENTON...MOVING EAST AT 35 MPH. THESE STORMS ARE CAPABLE OF
  PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CLARKSBURG AND MANALAPAN AROUND 645 PM EDT...
  CEDAR GLEN LAKES AND WHITING AROUND 650 PM EDT...
  JACKSONS MILLS AND ADELPHIA AROUND 655 PM EDT...
  FREEWOOD ACRES AND HOWELL AROUND 700 PM EDT...
  FARMINGDALE AND WHARTON STATE FOREST AROUND 705 PM EDT...
  TOMS RIVER AROUND 710 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING WIND 
DAMAGE IN HARLEYSVILLE PENNSYLVANIA AND MOORESTOWN NEW JERSEY. DO 
NOT STAY OUTDOORS.

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS LINE OF SEVERE
THUNDERSTORMS...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER
ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE
ROAD.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM...AND
THE STORM WILL AFFECT THE BEACHES. FOR YOUR SAFETY...IMMEDIATELY MOVE
OFF THE BEACH AND SEEK SHELTER INDOORS.

&&

LAT...LON 4006 7402 3989 7408 3977 7408 3955 7424
      3956 7426 3959 7426 3960 7428 3957 7432
      3971 7472 3973 7473 3978 7490 4001 7459
      4025 7448 4027 7442 4016 7401
TIME...MOT...LOC 2237Z 286DEG 32KT 4017 7451 4000 7453
          3980 7493

$$

FORECASTER: HEAVENER

1 follow-up statement

377 
WWUS51 KPHI 272317
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
717 PM EDT TUE MAY 27 2014

NJC007-272327-
/O.CAN.KPHI.SV.W.0042.000000T0000Z-140527T2330Z/
CAMDEN NJ-
717 PM EDT TUE MAY 27 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CAMDEN COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN MARYLAND. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR
DELAWARE AND SOUTHERN NEW JERSEY.

LAT...LON 4006 7402 3989 7408 3977 7408 3955 7424
      3956 7426 3959 7426 3960 7428 3957 7432
      3968 7465 3996 7436 4022 7424 4016 7401
TIME...MOT...LOC 2317Z 286DEG 32KT 4007 7406 3990 7408
          3970 7449

$$

NJC005-025-029-272330-
/O.CON.KPHI.SV.W.0042.000000T0000Z-140527T2330Z/
BURLINGTON NJ-MONMOUTH NJ-OCEAN NJ-
717 PM EDT TUE MAY 27 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR OCEAN...SOUTH CENTRAL MONMOUTH AND SOUTHEASTERN BURLINGTON
COUNTIES...

AT 713 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM BRICK
TOWNSHIP TO OCEAN GATE TO PENN STATE FOREST...OR ALONG A LINE
EXTENDING FROM 10 MILES NORTHEAST OF TOMS RIVER TO TOMS RIVER TO 25
MILES NORTH OF ATLANTIC CITY...MOVING EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WARETOWN...OCEAN ACRES...BARNEGAT AND BASS RIVER STATE FOREST BY
  725 PM EDT...
  MANAHAWKIN...BARNEGAT LIGHT...BEACH HAVEN WEST AND HARVEY CEDARS BY
  730 PM EDT...

WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

LAT...LON 4006 7402 3989 7408 3977 7408 3955 7424
      3956 7426 3959 7426 3960 7428 3957 7432
      3968 7465 3996 7436 4022 7424 4016 7401
TIME...MOT...LOC 2317Z 286DEG 32KT 4007 7406 3990 7408
          3970 7449

$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 4:08 AM EDT	Small Craft Advisory	PHI		59 hr
May 27, 5:52 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Monmouth, Ocean	53 min
May 27, 6:28 PM EDT	Special Marine Warning	PHI		62 min
May 27, 6:29 PM EDT	Special Marine Warning	PHI		2 hr
May 27, 6:33 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Ocean	57 min
May 27, 6:49 PM EDT	Special Weather Statement	PHI	Cumberland, Salem	56 min
May 27, 7:49 PM EDT	Special Marine Warning	PHI		86 min
May 27, 7:53 PM EDT	Special Marine Warning	PHI		82 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Every severe thunderstorm warning in 2014

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.