Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 280, NWS Philadelphia/Mount Holly

August 19, 2011Middlesex County, Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 19, 2011, 6:54 PM EDT for Middlesex County, Monmouth County, New Jersey. It was in force for 31 min. 1 report 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: Aug 19, 2011, 6:54 PM EDT (22:54 UTC)
Expired: Aug 19, 2011, 7:25 PM EDT
In force: 31 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Middlesex County, NJ, Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 22:56 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
Aug 19, 7:00 PM EDT	TSTM WND DMG	Edison, NJ	WIRES DOWN IN EDISON

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
Aug 19, 1:04 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.9 hours before the alert went out and 122 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: 897 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 23 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.

545 
WUUS51 KPHI 192254
SVRPHI
NJC023-025-200000-
/O.NEW.KPHI.SV.W.0280.110819T2254Z-110820T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
654 PM EDT FRI AUG 19 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF SANDY HOOK...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...PERTH AMBOY...NEW BRUNSWICK...

* UNTIL 800 PM EDT

* AT 652 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM COLONIA TO KENDALL PARK...OR
  ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST OF PERTH AMBOY TO 8
  MILES WEST OF NEW BRUNSWICK...AND MOVING SOUTHEAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SOUTH BRUNSWICK...NORTH BRUNSWICK...NEW BRUNSWICK AND KENDALL PARK
  AROUND 700 PM EDT...
  CARTERET AND DAYTON AROUND 705 PM EDT...
  SAYREVILLE...PERTH AMBOY AND EAST BRUNSWICK AROUND 710 PM EDT...
  SAYREVILLE AROUND 715 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.

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

&&

LAT...LON 4010 7402 4037 7462 4048 7447 4054 7453
      4058 7450 4060 7423 4057 7420 4055 7424
      4047 7426 4044 7420 4046 7412 4042 7399
      4044 7402 4047 7401 4044 7397 4032 7396
TIME...MOT...LOC 2254Z 317DEG 21KT 4061 7433 4043 7457

$$

TFG

1 follow-up statement

575 
WWUS51 KPHI 192325
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
725 PM EDT FRI AUG 19 2011

NJC023-025-192335-
/O.CAN.KPHI.SV.W.0280.000000T0000Z-110820T0000Z/
MIDDLESEX NJ-MONMOUTH NJ-
725 PM EDT FRI AUG 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR MONMOUTH AND MIDDLESEX
COUNTIES IS CANCELLED...

THUNDERSTORMS HAVE WEAKENED AND NO LONGER POSE A SEVERE THREAT.

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 4010 7402 4037 7462 4048 7447 4054 7453
      4058 7450 4060 7423 4057 7420 4055 7424
      4047 7426 4044 7420 4046 7412 4042 7399
      4044 7402 4047 7401 4044 7397 4032 7396
TIME...MOT...LOC 2325Z 317DEG 21KT 4048 7417 4030 7441

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 8:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	64 min
Aug 18, 8:26 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	112 min
Aug 18, 8:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	59 min
Aug 18, 8:48 PM EDT	Special Weather Statement	PHI	Warren	57 min
Aug 18, 8:48 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	57 min
Aug 18, 8:59 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	61 min
Aug 18, 9:48 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Warren	57 min
Aug 18, 9:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland, Salem	67 min
Aug 18, 9:57 PM EDT	Severe Thunderstorm Warning	PHI	Morris	43 min
Aug 19, 12:19 AM EDT	Special Marine Warning	PHI		26 min
Aug 19, 12:19 AM EDT	Special Weather Statement	PHI	Cape May	41 min
Aug 19, 12:50 AM EDT	Special Weather Statement	PHI	Cumberland, Salem	40 min
Aug 19, 1:14 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 1 more	3 hr
Aug 19, 1:31 AM EDT	Special Weather Statement	PHI	Cumberland, Gloucester, Salem	59 min
Aug 19, 2:28 AM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester, Salem	47 min
Aug 19, 2:48 AM EDT	Special Weather Statement	PHI	Monmouth, Ocean	57 min
Aug 19, 3:06 AM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May, Cumberland	114 min
Aug 19, 3:21 AM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth, Ocean	114 min
Aug 19, 6:24 AM EDT	Special Weather Statement	PHI	Mercer, Middlesex	36 min
Aug 19, 6:37 AM EDT	Special Weather Statement	PHI	Middlesex	23 min
Aug 19, 1:34 PM EDT	Special Marine Warning	PHI		41 min
Aug 19, 2:39 PM EDT	Special Marine Warning	PHI		96 min
Aug 19, 3:23 PM EDT	Special Marine Warning	PHI		67 min
Aug 19, 4:05 PM EDT	Special Weather Statement	PHI	Camden	55 min
Aug 19, 4:15 PM EDT	Special Marine Warning	PHI		90 min
Aug 19, 4:29 PM EDT	Severe Thunderstorm Warning	PHI	Warren	61 min
Aug 19, 4:32 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	2 hr
Aug 19, 4:38 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	67 min
Aug 19, 4:42 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Aug 19, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	78 min
Aug 19, 5:27 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	111 min
Aug 19, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	50 min
Aug 19, 5:47 PM EDT	Special Marine Warning	PHI		118 min
Aug 19, 5:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	104 min
Aug 19, 5:59 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset	80 min
Aug 19, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Salem	65 min
Aug 19, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Morris	28 min

Nearby

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.