Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 36, NWS Philadelphia/Mount Holly

June 13, 2017Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2017, 8:31 PM EDT for Sussex County, New Jersey. It was in force for 29 min. 2 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: Jun 13, 2017, 8:31 PM EDT (00:31 UTC)
Expired: Jun 13, 2017, 9:00 PM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 138 km from the middle of the area, began a volume at 00:31 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
Jun 13, 8:36 PM EDT	HAIL 0.88	2 Ene Vernon, NJ	HAIL OCCURRED FOR ABOUT 5 MINUTES
Jun 13, 8:50 PM EDT	TSTM WND DMG	1 Nnw Hamburg, NJ	DOWNED TREE ON STATE HIGHWAY 23 NORTH OF STATE HIGHWAY 94 INTERSECTION. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.5 hours before the alert went out and 140 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: 583 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1898 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

153 
WUUS51 KPHI 140031
SVRPHI
NJC037-140100-
/O.NEW.KPHI.SV.W.0036.170614T0031Z-170614T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
831 PM EDT TUE JUN 13 2017

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Sussex County in northwestern New Jersey...

* Until 900 PM EDT

* At 830 PM EDT, a severe thunderstorm was located near Vernon
  Valley, or 9 miles northwest of West Milford, moving southeast at
  15 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Minor damage to vehicles is possible. Expect damage to 
           trees and power lines. 

* Locations impacted include...
  Franklin, Hamburg, Ogdensburg, Sussex, Highland Lake and Vernon
  Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4120 7437 4120 7438 4104 7456 4121 7468
      4128 7453
TIME...MOT...LOC 0030Z 325DEG 13KT 4120 7453 

HAIL...1.00IN
WIND...60MPH
 
$$

Iovino

1 follow-up statement

972 
WWUS51 KPHI 140052
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
852 PM EDT TUE JUN 13 2017

NJC037-140100-
/O.CON.KPHI.SV.W.0036.000000T0000Z-170614T0100Z/
Sussex NJ-
852 PM EDT TUE JUN 13 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR EAST CENTRAL SUSSEX COUNTY...

At 850 PM EDT, a severe thunderstorm was located over Highland Lake, 
or near West Milford, moving southeast at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Minor damage to vehicles is possible. Expect damage to 
         trees and power lines. 

Locations impacted include...
Franklin, Hamburg, Ogdensburg, Sussex, Highland Lake and Vernon
Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4120 7437 4120 7439 4104 7456 4121 7468
      4126 7449
TIME...MOT...LOC 0051Z 301DEG 14KT 4116 7444 

HAIL...1.00IN
WIND...60MPH
 
$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:14 PM EDT	Areal Flood Advisory	PHI	Sussex	3 hr
Jun 13, 8:26 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Jun 13, 9:10 PM EDT	Special Weather Statement	PHI	Sussex	35 min
Jun 14, 6:34 AM EDT	Special Weather Statement	PHI	Camden	26 min
Jun 14, 7:39 AM EDT	Special Weather Statement	PHI	Burlington	36 min
Jun 14, 7:51 AM EDT	Special Weather Statement	PHI	Salem	39 min
Jun 14, 8:25 AM EDT	Special Weather Statement	PHI	Gloucester	35 min
Jun 14, 9:09 AM EDT	Special Weather Statement	PHI	Ocean	36 min
Jun 14, 9:10 AM EDT	Special Weather Statement	PHI	Camden	35 min
Jun 14, 9:31 AM EDT	Special Weather Statement	PHI	Ocean	29 min
Jun 14, 9:57 AM EDT	Special Weather Statement	PHI	Atlantic	48 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.