Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 296, NWS Philadelphia/Mount Holly

July 31, 20195 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 2019, 5:27 PM EDT for 5 counties in New Jersey. It was in force for 48 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: Jul 31, 2019, 5:27 PM EDT (21:27 UTC)
Expired: Jul 31, 2019, 6:15 PM EDT
In force: 48 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Cumberland County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 21:29 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
Jul 31, 6:00 PM EDT	TSTM WND GST 46	4 Se Mystic Island, NJ	WEATHERFLOW SITE XTUK.
Jul 31, 6:00 PM EDT	MARINE TSTM WIND 46	4 Se Mystic Island, NJ	WEATHERFLOW SITE XTUK.

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
Jul 31, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.5 hours before the alert went out and 190 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: 80 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1478 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

806 
WUUS51 KPHI 312127
SVRPHI
NJC001-005-011-029-033-312215-
/O.NEW.KPHI.SV.W.0296.190731T2127Z-190731T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
527 PM EDT Wed Jul 31 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Atlantic County in southern New Jersey...
  Northeastern Cumberland County in southern New Jersey...
  Southeastern Salem County in southern New Jersey...
  South central Ocean County in southern New Jersey...
  Southeastern Burlington County in southern New Jersey...

* Until 615 PM EDT.

* At 526 PM EDT, severe thunderstorms were located along a line
  extending from near Port Republic to Weymouth to near South
  Vineland, moving southeast 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...
  Vineland, Millville, Cumberland, Absecon, Buena, Egg Harbor City,
  Laurel Lake, Weymouth, Estell Manor, Port Republic, Pomona, Mays
  Landing, Dorothy, Mizpah, New Gretna, South Vineland, Rosenhayn,
  Elwood-Magnolia and Mystic Island.

This includes the following highways...
 Atlantic City Expressway between mile markers 8 and 21.
 Garden State Parkway between mile markers 38 and 52.

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 these storms. 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 3952 7434 3955 7436 3954 7439 3956 7441
      3951 7442 3949 7439 3949 7431 3937 7472
      3932 7505 3947 7523 3953 7486 3962 7447
      3951 7427
TIME...MOT...LOC 2126Z 304DEG 11KT 3955 7455 3950 7479 3945 7507 

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

MPS

1 follow-up statement

628 
WWUS51 KPHI 312207
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
607 PM EDT Wed Jul 31 2019

NJC001-005-011-029-033-312217-
/O.EXP.KPHI.SV.W.0296.000000T0000Z-190731T2215Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Ocean NJ-Burlington NJ-
607 PM EDT Wed Jul 31 2019

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ATLANTIC...
NORTHEASTERN CUMBERLAND...SOUTHEASTERN SALEM...SOUTH CENTRAL OCEAN
AND SOUTHEASTERN BURLINGTON COUNTIES WILL EXPIRE AT 615 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned 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 900 PM EDT for
southern New Jersey.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

LAT...LON 3952 7434 3955 7436 3954 7439 3956 7441
      3951 7442 3949 7439 3949 7431 3937 7472
      3932 7505 3947 7523 3953 7486 3962 7447
      3951 7427
TIME...MOT...LOC 2207Z 304DEG 11KT 3948 7442 3943 7466 3938 7494 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 3:28 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more	17 hr
Jul 31, 1:02 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	28 min
Jul 31, 1:14 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Jul 31, 1:19 PM EDT	Flash Flood Warning	PHI	Burlington	5 hr
Jul 31, 1:30 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer	45 min
Jul 31, 1:43 PM EDT	Special Marine Warning	PHI		62 min
Jul 31, 1:46 PM EDT	Flash Flood Warning	PHI	Burlington, Mercer	3 hr
Jul 31, 1:49 PM EDT	Special Marine Warning	PHI		86 min
Jul 31, 1:57 PM EDT	Special Weather Statement	PHI	Ocean	33 min
Jul 31, 2:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more	49 min
Jul 31, 2:21 PM EDT	Areal Flood Advisory	PHI	Ocean	4 hr
Jul 31, 2:23 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	52 min
Jul 31, 2:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth, Ocean	46 min
Jul 31, 2:29 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	46 min
Jul 31, 2:32 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more	3 hr
Jul 31, 2:46 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	44 min
Jul 31, 2:53 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	52 min
Jul 31, 3:00 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	3 hr
Jul 31, 3:05 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	40 min
Jul 31, 3:06 PM EDT	Special Marine Warning	PHI		54 min
Jul 31, 3:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	40 min
Jul 31, 3:24 PM EDT	Flash Flood Warning	PHI	Monmouth	4 hr
Jul 31, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	51 min
Jul 31, 3:39 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	4 hr
Jul 31, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	51 min
Jul 31, 3:48 PM EDT	Flash Flood Warning	PHI	Ocean	2 hr
Jul 31, 3:49 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer, Monmouth	41 min
Jul 31, 3:51 PM EDT	Special Marine Warning	PHI		54 min
Jul 31, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset	17 min
Jul 31, 4:36 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	4 hr
Jul 31, 4:52 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	38 min
Jul 31, 4:58 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	4 hr
Jul 31, 5:02 PM EDT	Special Weather Statement	PHI	Atlantic	28 min
Jul 31, 5:16 PM EDT	Special Weather Statement	PHI	Atlantic	44 min
Jul 31, 5:41 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	3 hr
Jul 31, 5:44 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	25 min
Jul 31, 5:51 PM EDT	Special Marine Warning	PHI		54 min
Jul 31, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	35 min
Jul 31, 5:57 PM EDT	Special Marine Warning	PHI		63 min
Jul 31, 6:05 PM EDT	Special Marine Warning	PHI		55 min
Jul 31, 6:41 PM EDT	Special Marine Warning	PHI		64 min
Jul 31, 6:53 PM EDT	Special Marine Warning	PHI		54 min
Jul 31, 7:36 PM EDT	Special Marine Warning	PHI		54 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.