Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 89, NWS Philadelphia/Mount Holly

July 13, 2017Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 13, 2017, 6:07 PM EDT for Monmouth County, Ocean County, New Jersey. It was in force for 25 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: Jul 13, 2017, 6:07 PM EDT (22:07 UTC)
Expired: Jul 13, 2017, 6:32 PM EDT
In force: 25 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 22:06 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
Jul 13, 6:13 PM EDT	TSTM WND DMG	Long Branch, NJ	UTILITY POLES AND WIRES DOWN IN LONG BRANCH

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
Jul 13, 2:57 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.1 hours before the alert went out and 132 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: 572 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

756 
WUUS51 KPHI 132207
SVRPHI
NJC025-029-132245-
/O.NEW.KPHI.SV.W.0089.170713T2207Z-170713T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
607 PM EDT THU JUL 13 2017

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northern Ocean County in southern New Jersey...
  Southern Monmouth County in central New Jersey...

* Until 645 PM EDT

* At 607 PM EDT, severe thunderstorms were located along a line
  extending from near Long Branch to Allenwood to near Woodruff,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to trees and power lines. 

* Severe thunderstorms will be near,
  Long Branch, Tinton Falls, Red Bank, Farmingdale, Allenwood, 
  Ramtown, Elberon and Collingwood Park around 610 PM EDT. 
  Asbury Park, Manasquan, Point Pleasant Beach and Mantoloking 
  around 615 PM EDT. 
  Jackson and Cedar Glen West around 625 PM EDT. 
  Leisure Village West-Pine Lake Park around 630 PM EDT. 
  Toms River, Pleasant Plains, Leisure Village and Leisure Village 
  East around 635 PM EDT. 
  Brick Township around 640 PM EDT. 
  Dover Beaches North around 645 PM EDT. 

Other locations impacted by these severe thunderstorms include
Avon-By-the-sea, Allenhurst, Ocean Grove, Brielle, West Long Branch,
Wanamassa, Point Pleasant, Loch Arbour, Neptune City and Oakhurst.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

In addition to large hail and damaging winds...frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember...if you can hear thunder...you are close
enough to be struck by lightning.

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.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4038 7397 4029 7397 3996 7405 4002 7452
      4012 7458 4021 7422 4038 7407
TIME...MOT...LOC 2207Z 282DEG 29KT 4033 7398 4016 7412 4003 7449 

HAIL...<.75IN
WIND...60MPH
 
$$

Robertson

1 follow-up statement

292 
WWUS51 KPHI 132232
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
632 PM EDT THU JUL 13 2017

NJC025-029-132242-
/O.CAN.KPHI.SV.W.0089.000000T0000Z-170713T2245Z/
Ocean NJ-Monmouth NJ-
632 PM EDT THU JUL 13 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OCEAN AND SOUTHERN
MONMOUTH COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.  However gusty winds and
heavy rain are still possible with these thunderstorms.

A severe thunderstorm watch remains in effect until 900 PM EDT for
southern and central New Jersey.

LAT...LON 4038 7397 4029 7397 3996 7405 4002 7452
      4012 7458 4021 7422 4038 7407
TIME...MOT...LOC 2230Z 282DEG 29KT 4029 7374 4012 7388 3999 7425 

$$

Robertson

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:22 PM EDT	Special Weather Statement	PHI	Morris	53 min
Jul 12, 9:17 PM EDT	Special Weather Statement	PHI	Morris	28 min
Jul 13, 3:25 PM EDT	Special Weather Statement	PHI	Sussex	50 min
Jul 13, 3:28 PM EDT	Special Weather Statement	PHI	Middlesex	47 min
Jul 13, 3:58 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Jul 13, 4:06 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	114 min
Jul 13, 4:40 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	50 min
Jul 13, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset	55 min
Jul 13, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	40 min
Jul 13, 4:58 PM EDT	Special Marine Warning	PHI		62 min
Jul 13, 5:07 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Mercer, Middlesex, Monmouth, Ocean	7 hr
Jul 13, 5:14 PM EDT	Special Weather Statement	PHI	Mercer	46 min
Jul 13, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	54 min
Jul 13, 5:31 PM EDT	Flash Flood Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	3 hr
Jul 13, 5:33 PM EDT	Special Marine Warning	PHI		87 min
Jul 13, 5:39 PM EDT	Special Weather Statement	PHI	Mercer	36 min
Jul 13, 6:07 PM EDT	Special Weather Statement	PHI	Atlantic	23 min
Jul 13, 6:09 PM EDT	Special Marine Warning	PHI		66 min
Jul 13, 6:20 PM EDT	Special Weather Statement	PHI	Burlington	40 min
Jul 13, 6:28 PM EDT	Special Weather Statement	PHI	Mercer	47 min
Jul 13, 6:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	45 min
Jul 13, 6:55 PM EDT	Special Marine Warning	PHI		95 min
Jul 13, 7:00 PM EDT	Special Marine Warning	PHI		90 min
Jul 13, 7:12 PM EDT	Special Weather Statement	PHI	Camden	48 min
Jul 13, 7:55 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jul 13, 7:58 PM EDT	Special Weather Statement	PHI	Cumberland	32 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2017 Every severe thunderstorm warning in 2017

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.