Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 54, NWS Philadelphia/Mount Holly

July 27, 2018Cumberland County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2018, 2:14 PM EDT for Cumberland County, Salem County, New Jersey. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 27, 2018, 2:14 PM EDT (18:14 UTC)
Expired: Jul 27, 2018, 3:00 PM EDT
In force: 46 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cumberland County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 76 km from the middle of the area, began a volume at 18:13 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.

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 27, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.2 hours before the alert went out and 176 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: 1842 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

750 
WUUS51 KPHI 271814
SVRPHI
NJC011-033-271900-
/O.NEW.KPHI.SV.W.0054.180727T1814Z-180727T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
214 PM EDT FRI JUL 27 2018

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cumberland County in southern New Jersey...
  Salem County in southern New Jersey...

* Until 300 PM EDT.

* At 213 PM EDT, a severe thunderstorm was located near Port Penn, or
  12 miles northeast of Middletown, moving northeast at 5 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Pennsville, Carneys Point, Salem, Woodstown, Alloway, Quinton,
  Delaware City, Greenwich, Shiloh, Hancocks Bridge, Newport Meadows,
  Port Penn and Hope Creek.

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 3964 7560 3974 7538 3971 7536 3969 7531
      3937 7525 3936 7544 3939 7548 3936 7547
      3936 7550 3940 7554 3941 7554 3946 7559
      3957 7557 3958 7560
TIME...MOT...LOC 1813Z 231DEG 6KT 3955 7554 

HAIL...0.75IN
WIND...60MPH
 
$$

CMS

1 follow-up statement

406 
WWUS51 KPHI 271832
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
232 PM EDT FRI JUL 27 2018

NJC011-033-271900-
/O.CON.KPHI.SV.W.0054.000000T0000Z-180727T1900Z/
Cumberland NJ-Salem NJ-
232 PM EDT FRI JUL 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTHWESTERN CUMBERLAND AND SALEM COUNTIES...

At 232 PM EDT, a severe thunderstorm was located over Newport
Meadows, or 10 miles west of Bridgeton, moving east at 15 mph.

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

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Pennsville, Carneys Point, Salem, Woodstown, Alloway, Quinton,
Delaware City, Greenwich, Shiloh, Hancocks Bridge, Newport Meadows,
Port Penn and Hope Creek.

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 3964 7560 3974 7538 3971 7536 3969 7531
      3937 7525 3936 7544 3939 7548 3936 7547
      3936 7550 3940 7554 3941 7554 3946 7559
      3957 7557 3958 7560
TIME...MOT...LOC 1832Z 282DEG 12KT 3942 7543 

HAIL...0.75IN
WIND...60MPH
 
$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 9:29 AM EDT	Special Weather Statement	PHI	Salem	61 min
Jul 27, 9:50 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Cumberland, Gloucester, Hunterdon, Mercer and 7 more	13 hr
Jul 27, 10:08 AM EDT	Special Weather Statement	PHI	Cumberland	67 min
Jul 27, 10:34 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	10 hr
Jul 27, 11:11 AM EDT	Special Weather Statement	PHI	Atlantic	64 min
Jul 27, 12:10 PM EDT	Special Weather Statement	PHI	Atlantic	65 min
Jul 27, 12:24 PM EDT	Areal Flood Advisory	PHI	Cape May	114 min
Jul 27, 1:15 PM EDT	Special Weather Statement	PHI	Salem	45 min
Jul 27, 1:23 PM EDT	Special Weather Statement	PHI	Morris	52 min
Jul 27, 1:31 PM EDT	Special Marine Warning	PHI		59 min
Jul 27, 1:38 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset	4 hr
Jul 27, 2:04 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset	41 min
Jul 27, 2:19 PM EDT	Special Marine Warning	PHI		56 min
Jul 27, 2:22 PM EDT	Special Marine Warning	PHI		53 min
Jul 27, 2:26 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	6 hr
Jul 27, 2:40 PM EDT	Special Marine Warning	PHI		65 min
Jul 27, 2:59 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	46 min
Jul 27, 3:09 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	6 hr
Jul 27, 3:14 PM EDT	Special Marine Warning	PHI		61 min
Jul 27, 3:45 PM EDT	Special Weather Statement	PHI	Cumberland	30 min
Jul 27, 4:12 PM EDT	Special Marine Warning	PHI		63 min
Jul 27, 4:18 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland, Gloucester, Salem	42 min
Jul 27, 4:19 PM EDT	Flash Flood Warning	PHI	Cumberland	4 hr
Jul 27, 4:25 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	7 hr
Jul 27, 4:32 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	43 min
Jul 27, 4:43 PM EDT	Areal Flood Advisory	PHI	Mercer	5 hr
Jul 27, 4:54 PM EDT	Flash Flood Warning	PHI	Middlesex	4 hr
Jul 27, 5:03 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cumberland	4 hr
Jul 27, 5:23 PM EDT	Special Marine Warning	PHI		67 min
Jul 27, 5:46 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	4 hr
Jul 27, 6:10 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Monmouth, Somerset	4 hr
Jul 27, 7:14 PM EDT	Special Marine Warning	PHI		61 min
Jul 27, 7:15 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	4 hr
Jul 27, 7:51 PM EDT	Special Weather Statement	PHI	Atlantic	39 min
Jul 27, 7:55 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Somerset, Warren	108 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2018 Every severe thunderstorm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.