Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 69, NWS Philadelphia/Mount Holly

May 28, 2019Morris County, Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 28, 2019, 7:39 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 66 min. 10 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: May 28, 2019, 7:39 PM EDT (23:39 UTC)
Expired: May 28, 2019, 8:45 PM EDT
In force: 66 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 117 km from the middle of the area, began a volume at 23:42 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
May 28, 8:24 PM EDT	TSTM WND DMG	1 Nne Stanhope, NJ	* 1 INJ * REPORT OF STRUCTURAL DAMAGE TO THE LENAPE VALLEY HIGH SCHOOL. PEOPLE ARE TRAPPED INSIDE THE SCHOOL. INJURIES REPORTED, BUT EXACT NUMBER UNKNOWN. POSSIBLE TORNADO DAMAGE. NUMEROUS TREES AND POWERLINES DOWN IN THE AREA AS WELL. POWER IS OUT ACROSS
May 28, 8:25 PM EDT	TSTM WND GST 50	1 Ene Stanhope, NJ	MEASURED WIND GUST OF 50 MPH BEFORE POWER WENT OUT. GUSTS BECAME HIGHER AFTER THE POWER WENT OUT.
May 28, 8:25 PM EDT	HAIL 0.7	Hopatcong, NJ
May 28, 8:27 PM EDT	TSTM WND DMG	1 E Stanhope, NJ	TREE REPORTED DOWN INTO A HOUSE ON HELEN STREET IN HOPATCONG. TIME ESTIMATED FROM RADAR.
May 28, 8:30 PM EDT	TSTM WND DMG	1 W Mount Arlington, NJ	POSSIBLE TORNADO DAMAGE ON BERTRAND ISLAND IN MOUNT ARLINGTON. TIME ESTIMATED FROM RADAR.
May 28, 8:30 PM EDT	TORNADO	Stanhope, NJ	MAXIMUM EF SCALE RATING EF1 WITH ESTIMATED MAXIMUM WINDS OF 100 MPH.
May 28, 8:32 PM EDT	FUNNEL CLOUD	3 Nw Mendham, NJ	TRAINED SPOTTER REPORTED A FUNNEL CLOUD AT THE BASE OF A ROTATING THUNDERSTORM.
May 28, 8:40 PM EDT	HAIL 1	Randolph, Nj, NJ
May 28, 8:43 PM EDT	HAIL 1.25	Denville, NJ	HALF DOLLAR SIZE HAIL. TIME ESTIMATED FROM RADAR.
May 28, 8:53 PM EDT	TSTM WND DMG	Blairstown Twp, NJ	TREES AND POWER LINES DOWN ON CEDAR LAKE RD AND MOUNT HERMON RD.

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
May 28, 1:48 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.7 hours before the alert went out and 143 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1158 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

811 
WUUS51 KPHI 282339
SVRPHI
NJC027-037-041-290045-
/O.NEW.KPHI.SV.W.0069.190528T2339Z-190529T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
739 PM EDT Tue May 28 2019

The National Weather Service in Mount Holly NJ has issued a

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

* Until 845 PM EDT.

* At 738 PM EDT, a severe thunderstorm was located near Bushkill, or
  16 miles southwest of Montague, moving southeast at 45 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  Morristown, Newton, Dover, Madison, Hopatcong, Florham Park, East
  Hanover, Lincoln Park, Kinnelon, Chatham, Boonton, Butler, Wharton,
  Rockaway, Morris Plains, Mount Arlington, Franklin, Mendham,
  Mountain Lakes and Stanhope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes can develop quickly from severe thunderstorms. Although a 
tornado is not immediately likely, if one is spotted, act quickly 
and move to a place of safety inside a sturdy structure such as a 
basement or small interior room.

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

&&

LAT...LON 4113 7445 4109 7450 4104 7450 4105 7445
      4102 7443 4100 7430 4090 7427 4091 7433
      4083 7433 4076 7438 4075 7436 4069 7443
      4103 7505 4110 7497 4109 7499 4116 7490
      4123 7486
TIME...MOT...LOC 2338Z 302DEG 41KT 4115 7503 

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

Iovino

1 follow-up statement

531 
WWUS51 KPHI 290019
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
819 PM EDT Tue May 28 2019

NJC027-037-041-290045-
/O.CON.KPHI.SV.W.0069.000000T0000Z-190529T0045Z/
Morris NJ-Sussex NJ-Warren NJ-
819 PM EDT Tue May 28 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR MORRIS...SOUTHERN SUSSEX AND NORTHEASTERN WARREN COUNTIES...

At 818 PM EDT, a severe thunderstorm was located over Hopatcong, or 8
miles southeast of Newton, moving southeast at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Morristown, Newton, Dover, Madison, Hopatcong, Florham Park, East
Hanover, Lincoln Park, Kinnelon, Chatham, Boonton, Butler, Wharton,
Rockaway, Morris Plains, Mount Arlington, Franklin, Mendham, Mountain
Lakes and Stanhope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes can develop quickly from severe thunderstorms. Although a 
tornado is not immediately likely, if one is spotted act quickly and 
move to a place of safety inside a sturdy structure, such as a 
basement or small interior room.

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

&&

LAT...LON 4109 7450 4104 7450 4105 7445 4102 7443
      4100 7430 4090 7427 4091 7433 4083 7433
      4076 7438 4075 7436 4069 7443 4103 7505
      4110 7497 4109 7499 4116 7490
TIME...MOT...LOC 0018Z 304DEG 28KT 4096 7465 

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
May 28, 9:17 AM EDT	Special Marine Warning	PHI		58 min
May 28, 9:31 AM EDT	Special Weather Statement	PHI	Cape May	44 min
May 28, 6:04 PM EDT	Special Weather Statement	PHI	Salem	41 min
May 28, 6:11 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	64 min
May 28, 6:13 PM EDT	Special Marine Warning	PHI		62 min
May 28, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	38 min
May 28, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	61 min
May 28, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	40 min
May 28, 7:53 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland, Salem	52 min
May 28, 7:55 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	2 hr
May 28, 7:59 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	2 hr
May 28, 7:59 PM EDT	Tornado Warning	PHI	Cumberland	31 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.