Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

September 7, 2018Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 7, 2018, 3:25 PM EDT for Atlantic County, New Jersey. It was in force for 50 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: Sep 7, 2018, 3:25 PM EDT (19:25 UTC)
Expired: Sep 7, 2018, 4:15 PM EDT
In force: 50 min
Issued by: NWS Philadelphia/Mount Holly

County Atlantic County, NJ

The radar

The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 19:26 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.4 hours before the alert went out and 196 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: 1722 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

942 
WWUS81 KPHI 071925
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
325 PM EDT FRI SEP 7 2018

NJZ022-027-072015-
Atlantic-Southeastern Burlington-
325 PM EDT FRI SEP 7 2018

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL ATLANTIC AND
SOUTHEASTERN BURLINGTON COUNTIES...

At 325 PM EDT, a strong thunderstorm was located near Pomona, or 12
miles northwest of Atlantic City, moving northeast at 15 mph.

Winds up to 40 mph are possible with this storm.

Locations impacted include...
Absecon, Egg Harbor City, Port Republic, Pomona, New Gretna, Wading
River, Mays Landing, Elwood-Magnolia and Mystic Island.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3956 7442 3955 7444 3955 7442 3954 7441
      3951 7442 3950 7440 3937 7459 3949 7477
      3967 7461 3959 7439
TIME...MOT...LOC 1925Z 213DEG 14KT 3947 7463 

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 4:22 AM EDT	Small Craft Advisory	PHI		35 hr
Sep 7, 12:59 PM EDT	Special Weather Statement	PHI	Cape May	46 min
Sep 7, 1:26 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	31 min
Sep 7, 1:29 PM EDT	Areal Flood Advisory	PHI	Cape May	3 hr
Sep 7, 2:20 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May	30 min
Sep 7, 2:53 PM EDT	Special Weather Statement	PHI	Atlantic	37 min
Sep 7, 3:36 PM EDT	Gale Watch	PHI		24 hr
Sep 7, 5:27 PM EDT	Special Marine Warning	PHI		46 min
Sep 7, 6:32 PM EDT	Special Weather Statement	PHI	Camden	43 min
Sep 7, 6:41 PM EDT	Flash Flood Warning	PHI	Camden, Gloucester	4 hr
Sep 7, 7:08 PM EDT	Special Weather Statement	PHI	Camden	52 min
Sep 7, 7:19 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	56 min
Sep 7, 1:01 PM EDT	Special Weather Statement	PHI	Sussex	44 min
Sep 7, 1:45 PM EDT	Special Weather Statement	PHI	Sussex	30 min
Sep 7, 2:01 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr
Sep 7, 2:49 PM EDT	Special Weather Statement	PHI	Sussex	41 min
Sep 7, 4:12 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	94 min
Sep 7, 4:58 PM EDT	Special Weather Statement	PHI	Kent	47 min
Sep 7, 5:05 PM EDT	Severe Thunderstorm Warning	PHI	Kent	39 min
Sep 6, 8:27 PM EDT	Special Weather Statement	PHI	Kent	33 min
Sep 7, 3:20 PM EDT	Special Weather Statement	PHI	Caroline	40 min

Nearby

Special Weather Statements in New Jersey, 2018 Every special weather statement 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.