Alert archive / New Jersey / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

May 25, 2017Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at May 25, 2017, 5:51 PM EDT for Salem County, New Jersey. It was in force for 24 min. 1 report 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 25, 2017, 5:51 PM EDT (21:51 UTC)
Expired: May 25, 2017, 6:15 PM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly

County Salem County, NJ

The radar

The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 21:54 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 25, 5:55 PM EDT	HAIL 1	Shiloh, NJ

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.9 hours before the alert went out and 167 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: 492 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 478 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

944 
WWUS81 KPHI 252151
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
551 PM EDT THU MAY 25 2017

NJZ016-017-021-252215-
Salem-Cumberland-Gloucester-
551 PM EDT THU MAY 25 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CUMBERLAND...
CENTRAL SALEM AND SOUTHERN GLOUCESTER COUNTIES...

At 550 PM EDT, a strong thunderstorm was located over Shiloh, or near
Bridgeton, moving northeast at 30 mph.

Winds up to 50 mph and half inch hail are possible with this storm.

Locations impacted include...
Vineland, Bridgeton, Glassboro, Clayton, Woodstown, Alloway, Elmer,
Greenwich, Shiloh, Franklinville, Olivet, Malaga, Newport Meadows,
Seabrook Farms, Rosenhayn and Centerton.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3936 7526 3933 7530 3936 7535 3936 7536
      3940 7542 3939 7542 3940 7543 3943 7544
      3973 7529 3963 7495
TIME...MOT...LOC 2150Z 209DEG 26KT 3944 7532 

$$

JRK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 5:12 PM EDT	Special Marine Warning	PHI		63 min
May 25, 5:15 PM EDT	Special Weather Statement	PHI	Cumberland	30 min
May 25, 5:29 PM EDT	Areal Flood Advisory	PHI	Camden, Cumberland, Gloucester, Salem	2 hr
May 25, 6:16 PM EDT	Special Weather Statement	PHI	Gloucester	29 min
May 25, 7:37 PM EDT	Special Marine Warning	PHI		38 min
May 25, 7:50 PM EDT	Special Marine Warning	PHI		55 min
May 25, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	49 min
May 25, 5:42 PM EDT	Special Weather Statement	PHI	Philadelphia	33 min
May 25, 6:39 PM EDT	Special Weather Statement	PHI	Bucks	36 min
May 25, 5:48 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's, Talbot	42 min
May 25, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	49 min
May 25, 7:09 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	51 min
May 25, 6:48 PM EDT	Special Weather Statement	PHI	Sussex	27 min
May 25, 7:13 PM EDT	Special Weather Statement	PHI	Kent	32 min
May 25, 7:49 PM EDT	Special Weather Statement	PHI	New Castle	26 min

Nearby

Special Weather Statements in New Jersey, 2017 Every special weather statement 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.