Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

October 25, 2021Salem County, New Jersey; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 25, 2021, 6:27 PM EDT for Salem County, New Jersey; New Castle County, Delaware. It was in force for 33 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: Oct 25, 2021, 6:27 PM EDT (22:27 UTC)
Expired: Oct 25, 2021, 7:00 PM EDT
In force: 33 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.25 in
Wind: 50

Counties New Castle County, DE, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 22:28 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
Oct 25, 7:05 PM EDT	HAIL 0.25	Newark, DE

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.5 hours before the alert went out and 170 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

547 
WWUS81 KPHI 252227
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
627 PM EDT Mon Oct 25 2021
 
DEZ001-NJZ016-017-021-PAZ070-102-252300-
New Castle DE-Salem NJ-Cumberland NJ-Gloucester NJ-Delaware PA-
Eastern Chester PA-
627 PM EDT Mon Oct 25 2021

...Strong thunderstorms will impact portions of New Castle, west
central Cumberland, Salem, northwestern Gloucester, south central
Chester and southwestern Delaware Counties through 700 PM EDT...

At 626 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Massey to near Woodland Beach. Movement
was north at 40 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated. These storms have a history of producing 
         winds to near 50 mph and isolated tree and power line 
         damage.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Wilmington, Newark, Middletown, Chester, Pennsville, Carneys Point,
Elsmere, Paulsboro, Kennett Square, New Castle, Penns Grove, Salem,
Woodstown, Alloway, Woodbury Heights, Quinton, Swedesboro, Delaware
City, Newport and Arden.

This includes the following highways...
 New Jersey Turnpike between exits 1 and 2.
 Interstate 95 in Pennsylvania between mile markers 0 and 3.
 Interstate 95 in Delaware between mile markers 0 and 23.
 Interstate 295 in New Jersey between mile markers 0 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3989 7575 3981 7510 3932 7543 3933 7547
      3933 7550 3935 7549 3936 7551 3935 7554
      3935 7555 3934 7556 3937 7577 3973 7580
TIME...MOT...LOC 2226Z 198DEG 37KT 3933 7579 3932 7554 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

JEO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 3:12 AM EDT	Gale Watch	PHI		13 hr
Oct 25, 4:15 PM EDT	Gale Warning	PHI		46 hr
Oct 25, 6:03 PM EDT	Special Marine Warning	PHI		57 min
Oct 25, 6:33 PM EDT	Severe Thunderstorm Warning	PHI	Salem	42 min
Oct 25, 7:02 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	43 min
Oct 25, 7:34 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	26 min
Oct 25, 6:57 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware	48 min
Oct 25, 7:43 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	47 min
Oct 25, 4:15 PM EDT	Special Weather Statement	PHI	Sussex	30 min
Oct 25, 5:27 PM EDT	Special Weather Statement	PHI	Kent	33 min
Oct 25, 5:06 PM EDT	Special Weather Statement	PHI	Talbot	39 min
Oct 25, 5:42 PM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	48 min

Nearby

Special Weather Statements in New Jersey, 2021 Special Weather Statements in Delaware, 2021 Every special weather statement in 2021

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.