Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 177, NWS Philadelphia/Mount Holly

June 29, 2019Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2019, 4:53 PM EDT for Morris County, New Jersey. It was in force for 22 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: Jun 29, 2019, 4:53 PM EDT (20:53 UTC)
Expired: Jun 29, 2019, 5:15 PM EDT
In force: 22 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 70.0 mph

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 95 km from the middle of the area, began a volume at 20:52 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 29, 4:56 PM EDT	TSTM WND DMG	Morristown, NJ	DOWNED TREE ON INTERSTATE 287 NORTHBOUND RAMP TO EXIT 36. TIME ESTIMATED FROM RADAR.

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
Jun 29, 12:08 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 133 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: 1180 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1077 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

221 
WUUS51 KPHI 292053
SVRPHI
NJC027-292115-
/O.NEW.KPHI.SV.W.0177.190629T2053Z-190629T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
453 PM EDT Sat Jun 29 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Morris County in northern New Jersey...

* Until 515 PM EDT.

* At 453 PM EDT, a severe thunderstorm was located over Morris
  Plains, or near Morristown, moving southeast at 30 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Morristown, Dover, Madison, Florham Park, East Hanover, Chatham,
  Boonton, Wharton, Rockaway, Morris Plains, Mendham, Mountain Lakes,
  Victory Gardens, Parsippany, Bernardsville, White Meadow Lake and
  Hanover Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4082 7434 4079 7437 4076 7437 4075 7436
      4069 7444 4074 7455 4076 7456 4075 7457
      4079 7465 4096 7454 4089 7434 4086 7432
TIME...MOT...LOC 2053Z 297DEG 28KT 4085 7451 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

PF

1 follow-up statement

727 
WWUS51 KPHI 292114
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
514 PM EDT Sat Jun 29 2019

NJC027-292123-
/O.EXP.KPHI.SV.W.0177.000000T0000Z-190629T2115Z/
Morris NJ-
514 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRIS COUNTY
WILL EXPIRE AT 515 PM EDT...
    
The severe thunderstorm which prompted the warning is moving out of 
the warned area. Therefore, the warning will be allowed to expire. 
However gusty winds are still possible in its wake. 

A severe thunderstorm watch remains in effect until 700 PM EDT for
northern New Jersey.

LAT...LON 4082 7434 4079 7437 4076 7437 4075 7436
      4069 7444 4074 7455 4076 7456 4075 7457
      4079 7465 4096 7454 4089 7434 4086 7432
TIME...MOT...LOC 2113Z 297DEG 28KT 4079 7435 

$$

PF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 8:08 PM EDT	Special Weather Statement	PHI	Burlington	37 min
Jun 29, 1:35 PM EDT	Special Weather Statement	PHI	Camden	25 min
Jun 29, 1:54 PM EDT	Special Weather Statement	PHI	Burlington	36 min
Jun 29, 2:31 PM EDT	Special Weather Statement	PHI	Gloucester	29 min
Jun 29, 3:09 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Gloucester	37 min
Jun 29, 3:10 PM EDT	Special Marine Warning	PHI		50 min
Jun 29, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	46 min
Jun 29, 3:17 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	43 min
Jun 29, 3:18 PM EDT	Special Marine Warning	PHI		57 min
Jun 29, 3:19 PM EDT	Special Weather Statement	PHI	Ocean	26 min
Jun 29, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	36 min
Jun 29, 3:25 PM EDT	Special Weather Statement	PHI	Burlington	35 min
Jun 29, 3:31 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	44 min
Jun 29, 3:45 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	45 min
Jun 29, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	50 min
Jun 29, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	49 min
Jun 29, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Jun 29, 4:00 PM EDT	Flash Flood Warning	PHI	Gloucester, Salem	3 hr
Jun 29, 4:01 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	3 hr
Jun 29, 4:05 PM EDT	Special Marine Warning	PHI		55 min
Jun 29, 4:06 PM EDT	Special Marine Warning	PHI		54 min
Jun 29, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	49 min
Jun 29, 4:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Ocean	30 min
Jun 29, 4:16 PM EDT	Special Marine Warning	PHI		18 min
Jun 29, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	27 min
Jun 29, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	50 min
Jun 29, 4:26 PM EDT	Special Marine Warning	PHI		49 min
Jun 29, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset, Sussex, Warren	48 min
Jun 29, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	47 min
Jun 29, 4:39 PM EDT	Special Marine Warning	PHI		96 min
Jun 29, 4:41 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Jun 29, 4:44 PM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	3 hr
Jun 29, 4:52 PM EDT	Special Marine Warning	PHI		34 min
Jun 29, 4:55 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jun 29, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	27 min
Jun 29, 5:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Monmouth, Ocean	40 min
Jun 29, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	67 min
Jun 29, 5:19 PM EDT	Special Marine Warning	PHI		116 min
Jun 29, 5:29 PM EDT	Special Marine Warning	PHI		109 min
Jun 29, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	43 min
Jun 29, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Monmouth, Ocean	32 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019 Every severe thunderstorm warning in 2019

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.