Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 166, NWS Philadelphia/Mount Holly

October 11, 20104 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 11, 2010, 8:26 PM EDT for 4 counties in New Jersey. It was in force for 45 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: Oct 11, 2010, 8:26 PM EDT (00:26 UTC)
Expired: Oct 11, 2010, 9:11 PM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 00:26 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
Oct 11, 8:29 PM EDT	HAIL 0.25	Basking Ridge, 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
Oct 11, 3:38 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.4 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: 38 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1308 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 162 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.

947 
WUUS51 KPHI 120026
SVRPHI
NJC023-025-027-035-120130-
/O.NEW.KPHI.SV.W.0166.101012T0026Z-101012T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
826 PM EDT MON OCT 11 2010

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...
  NORTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF PERTH AMBOY...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF MORRISTOWN...
  NORTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 930 PM EDT

* AT 822 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
  BASKING RIDGE...OR 7 MILES SOUTHWEST OF MORRISTOWN...AND MOVING
  SOUTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES SOUTHWEST OF MADISON AROUND 830 PM EDT...
  CHATHAM AROUND 835 PM EDT...
  COLONIA AROUND 845 PM EDT...
  CARTERET AND 6 MILES NORTHEAST OF PERTH AMBOY AROUND 850 PM EDT...
  SANDY HOOK AROUND 910 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4027 7397 4063 7466 4069 7472 4085 7450
      4080 7435 4073 7437 4067 7445 4065 7445
      4066 7440 4059 7444 4059 7420 4055 7424
      4047 7427 4044 7420 4046 7412 4041 7400
      4042 7399 4047 7401 4047 7399 4043 7396
TIME...MOT...LOC 0026Z 294DEG 38KT 4071 7454

$$

NIERENBERG

2 follow-up statements

439 
WWUS51 KPHI 120056
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
856 PM EDT MON OCT 11 2010

NJC027-035-120106-
/O.CAN.KPHI.SV.W.0166.000000T0000Z-101012T0130Z/
MORRIS NJ-SOMERSET NJ-
856 PM EDT MON OCT 11 2010

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SOMERSET AND SOUTH
CENTRAL MORRIS COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4027 7397 4056 7451 4059 7444 4061 7443
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4043 7396
TIME...MOT...LOC 0056Z 294DEG 38KT 4058 7416

$$

NJC023-025-120130-
/O.CON.KPHI.SV.W.0166.000000T0000Z-101012T0130Z/
MIDDLESEX NJ-MONMOUTH NJ-
856 PM EDT MON OCT 11 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR NORTHEASTERN MONMOUTH AND NORTHEASTERN MIDDLESEX COUNTIES...

AT 853 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 CARTERET...OR NEAR STATEN ISLAND...MOVING SOUTHEAST AT
45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES NORTHEAST OF KEANSBURG...8 MILES NORTHEAST OF NORTH
  MIDDLETOWN AND 8 MILES NORTHEAST OF PORT MONMOUTH BY 905 PM EDT...
  SANDY HOOK AND 8 MILES NORTHEAST OF LEONARDO BY 910 PM EDT...
  7 MILES NORTHEAST OF HIGHLANDS BY 915 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4027 7397 4056 7451 4059 7444 4061 7443
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4043 7396
TIME...MOT...LOC 0056Z 294DEG 38KT 4058 7416

$$

NIERENBERG

491 
WWUS51 KPHI 120111
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
911 PM EDT MON OCT 11 2010

NJC023-025-120118-
/O.CAN.KPHI.SV.W.0166.000000T0000Z-101012T0130Z/
MIDDLESEX NJ-MONMOUTH NJ-
911 PM EDT MON OCT 11 2010

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4027 7397 4056 7451 4059 7444 4061 7443
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4043 7396
TIME...MOT...LOC 0108Z 294DEG 38KT 4053 7401

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 11, 8:23 PM EDT	Special Weather Statement	PHI	Union	67 min
Oct 11, 9:51 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more	114 min
Oct 11, 9:59 PM EDT	Special Weather Statement	PHI	Burlington	61 min
Oct 11, 10:04 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	56 min
Oct 11, 10:06 PM EDT	Special Weather Statement	PHI	Middlesex	54 min
Oct 11, 10:08 PM EDT	Special Weather Statement	PHI	Hunterdon	67 min
Oct 11, 10:27 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	63 min
Oct 11, 10:34 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex	56 min
Oct 11, 10:44 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	61 min
Oct 11, 11:10 PM EDT	Special Weather Statement	PHI	Cumberland, Salem	65 min
Oct 11, 11:25 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	65 min
Oct 11, 11:29 PM EDT	Special Weather Statement	PHI	Mercer, Monmouth	61 min
Oct 11, 11:37 PM EDT	Special Marine Warning	PHI		53 min
Oct 11, 11:38 PM EDT	Special Weather Statement	PHI	Cumberland	67 min
Oct 11, 11:50 PM EDT	Special Weather Statement	PHI	Cape May	55 min
Oct 11, 11:57 PM EDT	Special Weather Statement	PHI	Monmouth	33 min
Oct 12, 12:20 AM EDT	Special Weather Statement	PHI	Cape May	55 min
Oct 12, 12:22 AM EDT	Special Marine Warning	PHI		53 min
Oct 12, 12:23 AM EDT	Special Weather Statement	PHI	Ocean	37 min
Oct 12, 12:25 AM EDT	Special Weather Statement	PHI	Cape May	65 min
Oct 12, 12:58 AM EDT	Special Weather Statement	PHI	Atlantic	62 min
Oct 12, 1:21 AM EDT	Special Weather Statement	PHI	Mercer	54 min
Oct 12, 1:26 AM EDT	Special Weather Statement	PHI	Ocean	64 min
Oct 12, 3:37 AM EDT	Special Weather Statement	PHI	Burlington, Camden	53 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.