Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 55, NWS Philadelphia/Mount Holly

June 19, 2017Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2017, 6:47 PM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 43 min. 4 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 19, 2017, 6:47 PM EDT (22:47 UTC)
Expired
Jun 19, 2017, 7:30 PM EDT
In force
43 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 55 km from the middle of the area, began a volume at 22:46 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

TimeReportWhereRemark
Jun 19, 6:53 PM EDTTSTM WND GST 59Cape May, NJ
Jun 19, 6:53 PM EDTMARINE TSTM WIND 59Cape May, NJ
Jun 19, 6:58 PM EDTTSTM WND GST 59Cape May, NJ
Jun 19, 6:58 PM EDTMARINE TSTM WIND 59Cape May, NJ

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.

IssuedProductOfficeLasted
Jun 19, 11:13 AM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.8 hours before the alert went out and 141 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2017-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 419 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2017-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
419 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

038 
WUUS51 KPHI 192247
SVRPHI
NJC001-009-011-192330-
/O.NEW.KPHI.SV.W.0055.170619T2247Z-170619T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
647 PM EDT MON JUN 19 2017

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  South central Atlantic County in southern New Jersey...
  Southeastern Cumberland County in southern New Jersey...
  Cape May County in southern New Jersey...

* Until 730 PM EDT

* At 646 PM EDT, severe thunderstorms were located along a line
  extending from 6 miles northeast of Bowers to 9 miles east of Big
  Stone Beach to 7 miles north of Cape Henlopen State Park, moving
  northeast at 50 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Severe thunderstorms will be near,
  Cape May, West Cape May and North Cape May around 700 PM EDT. 
  Wildwood Crest, Goshen, Rio Grande, Diamond Beach, Bivalve, Green 
  Creek and Port Norris around 705 PM EDT. 
  North Wildwood, Stone Harbor, Eldora, Scotch Bonnet, Dennisville, 
  Cape May Court House, Leesburg, Mauricetown, Bricksboro and Port 
  Elizabeth around 710 PM EDT. 
  Estell Manor, Avalon and Belleplain Forest around 715 PM EDT. 
  Woodbine, Sea Isle City, Strathmere and Seaville around 720 PM 
  EDT. 
  Ocean City, Somers Point, Corbin City, Beesleys Point and Marmora 
  around 730 PM EDT. 

Other locations impacted by these severe thunderstorms include Erma,
Whitesboro-Burleigh, Villas and West Wildwood.

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.

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

&&

LAT...LON 3919 7462 3891 7486 3893 7500 3915 7493
      3919 7508 3916 7515 3920 7522 3912 7537
      3913 7539 3939 7482 3926 7452
TIME...MOT...LOC 2246Z 247DEG 46KT 3911 7528 3903 7516 3891 7513 

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

Drag
2 follow-up statements
020 
WWUS51 KPHI 192255
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
655 PM EDT MON JUN 19 2017

NJC001-009-011-192330-
/O.CON.KPHI.SV.W.0055.000000T0000Z-170619T2330Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
655 PM EDT MON JUN 19 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTH CENTRAL ATLANTIC...SOUTHEASTERN CUMBERLAND AND CAPE MAY
COUNTIES...

At 655 PM EDT, severe thunderstorms were located along a line
extending from near Fortesque to 7 miles northwest of Green Creek to
near North Cape May, moving east at 60 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

These severe storms will be near...
  Cape May and Green Creek around 700 PM EDT. 
  Wildwood Crest, Goshen, Diamond Beach, Leesburg, Rio Grande and 
  Cape May Court House around 705 PM EDT. 
  North Wildwood, Avalon, Stone Harbor, Eldora, Dennisville, Scotch 
  Bonnet, Mauricetown, Bricksboro and Port Elizabeth around 710 PM 
  EDT. 
  Woodbine, Sea Isle City, Estell Manor, Belleplain Forest, Seaville 
  and Strathmere around 715 PM EDT. 
  Marmora around 720 PM EDT. 
  Corbin City and Beesleys Point around 725 PM EDT. 
  Ocean City and Somers Point around 730 PM EDT. 

Other locations impacted by these severe thunderstorms include Erma,
Whitesboro-Burleigh, Villas and West Wildwood.

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.

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

&&

LAT...LON 3919 7462 3891 7486 3893 7500 3915 7492
      3919 7508 3916 7515 3920 7522 3939 7482
      3926 7452
TIME...MOT...LOC 2255Z 248DEG 52KT 3917 7519 3909 7503 3895 7500 

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

Drag
634 
WWUS51 KPHI 192323
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
723 PM EDT MON JUN 19 2017

NJC001-009-011-192331-
/O.EXP.KPHI.SV.W.0055.000000T0000Z-170619T2330Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
723 PM EDT MON JUN 19 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ATLANTIC...
SOUTHEASTERN CUMBERLAND AND CAPE MAY COUNTIES WILL EXPIRE AT 730 PM
EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.  However gusty winds
and heavy rain are still possible with these thunderstorms.

A severe thunderstorm watch remains in effect until 800 PM EDT for
southern New Jersey.


LAT...LON 3919 7462 3891 7486 3893 7500 3915 7492
      3919 7508 3916 7515 3920 7522 3939 7482
      3926 7452
TIME...MOT...LOC 2321Z 247DEG 46KT 3930 7480 3922 7464 3908 7461 

$$

Drag

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 12:03 PM EDTSpecial Weather StatementPHISussex27 min
Jun 19, 2:33 PM EDTAreal Flood AdvisoryPHISussex4 hr
Jun 19, 2:57 PM EDTSevere Thunderstorm WarningPHISussex, Warren48 min
Jun 19, 3:17 PM EDTFlash Flood WarningPHISussex, Warren3 hr
Jun 19, 3:35 PM EDTSevere Thunderstorm WarningPHIWarren25 min
Jun 19, 3:45 PM EDTSpecial Weather StatementPHISussex15 min
Jun 19, 3:53 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex, Warren37 min
Jun 19, 3:54 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Morris, Somerset, Warren3 hr
Jun 19, 3:56 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset, Warren49 min
Jun 19, 4:07 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem38 min
Jun 19, 4:24 PM EDTSpecial Marine WarningPHI36 min
Jun 19, 4:28 PM EDTSpecial Weather StatementPHISussex17 min
Jun 19, 4:34 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Mercer, Salem41 min
Jun 19, 4:42 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Cumberland, Gloucester, Salem3 hr
Jun 19, 4:51 PM EDTSpecial Weather StatementPHIGloucester39 min
Jun 19, 4:58 PM EDTSpecial Weather StatementPHIUnion32 min
Jun 19, 5:05 PM EDTSpecial Marine WarningPHI55 min
Jun 19, 5:06 PM EDTAreal Flood AdvisoryPHIMercer, Middlesex, Monmouth, Somerset3 hr
Jun 19, 5:09 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more51 min
Jun 19, 5:15 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Cumberland, Gloucester, Salem45 min
Jun 19, 5:28 PM EDTSevere Thunderstorm WarningPHICumberland62 min
Jun 19, 5:41 PM EDTSpecial Marine WarningPHI64 min
Jun 19, 5:44 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more3 hr
Jun 19, 5:46 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Mercer, Middlesex, Monmouth, Ocean3 hr
Jun 19, 5:52 PM EDTSpecial Weather StatementPHIAtlantic, Monmouth, Ocean38 min
Jun 19, 5:53 PM EDTSpecial Marine WarningPHI67 min
Jun 19, 6:01 PM EDTSpecial Weather StatementPHICumberland44 min
Jun 19, 6:13 PM EDTSpecial Marine WarningPHI92 min
Jun 19, 7:08 PM EDTSpecial Marine WarningPHI52 min
Jun 19, 7:20 PM EDTSevere Thunderstorm WarningPHIAtlantic, Ocean25 min
Jun 19, 7:33 PM EDTSpecial Marine WarningPHI57 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2017Every 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.