Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

August 30, 2021Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 30, 2021, 6:41 PM EDT for Cape May County, New Jersey. It was in force for 34 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: Aug 30, 2021, 6:41 PM EDT (22:41 UTC)
Expired: Aug 30, 2021, 7:15 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.00 in
Wind: 40

County Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 78 km from the middle of the area, began a volume at 22:45 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
Aug 30, 7:24 PM EDT	MARINE TSTM WIND 39	1 Ssw North Cape May, NJ	CAPE MAY WEATHERFLOW SITE GUSTS TO 39 MPH AT 724 PM.

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, 10.7 hours before the alert went out and 157 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: 392 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 791 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

227 
WWUS81 KPHI 302241
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
641 PM EDT Mon Aug 30 2021
 
NJZ023>025-302315-
Coastal Atlantic NJ-Atlantic Coastal Cape May NJ-Cape May NJ-
641 PM EDT Mon Aug 30 2021

...Strong thunderstorms will impact portions of south central
Atlantic and Cape May Counties through 715 PM EDT...

At 640 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Longport to Sea Isle City to near Green Creek
to 9 miles east of Big Stone Beach. Movement was east at 15 mph.

HAZARD...Wind gusts up to 40 mph. Frequent cloud to ground lightning 
         is occurring and is affected the beaches.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Ocean City, Cape May, Somers Point, Ventnor City, Margate City, North
Wildwood, Wildwood Crest, Woodbine, Sea Isle City, Avalon, West Cape
May, Longport, Stone Harbor, Corbin City, Cape May Court House,
Scotch Bonnet, Beesleys Point, Seaville, Dennisville and Strathmere.

This includes Garden State Parkway between mile markers 0 and 29.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

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

&&

LAT...LON 3935 7447 3902 7473 3889 7489 3895 7506
      3912 7492 3920 7490 3930 7471 3929 7465
      3931 7467 3932 7466 3931 7462 3933 7461
      3934 7460 3935 7456
TIME...MOT...LOC 2240Z 284DEG 13KT 3933 7453 3915 7472 3910 7494 3905
7515

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Gorse

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 5:00 AM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	71 hr
Aug 30, 5:44 AM EDT	Dense Fog Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more	3 hr
Aug 30, 4:48 PM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	27 min
Aug 30, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	44 min
Aug 30, 5:21 PM EDT	Special Weather Statement	PHI	Atlantic	24 min
Aug 30, 5:26 PM EDT	Special Marine Warning	PHI		64 min
Aug 30, 5:44 PM EDT	Special Marine Warning	PHI		61 min
Aug 30, 5:53 PM EDT	Special Weather Statement	PHI	Atlantic	22 min
Aug 30, 5:56 PM EDT	Special Weather Statement	PHI	Cape May	49 min
Aug 30, 6:16 PM EDT	Special Marine Warning	PHI		89 min
Aug 30, 7:20 PM EDT	Special Weather Statement	PHI	Cape May	25 min
Aug 30, 7:31 PM EDT	Special Marine Warning	PHI		59 min
Aug 30, 3:44 PM EDT	Special Weather Statement	PHI	New Castle	31 min
Aug 30, 4:14 PM EDT	Special Weather Statement	PHI	Kent	31 min
Aug 30, 6:02 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	28 min
Aug 30, 3:46 PM EDT	Special Weather Statement	PHI	Kent	29 min
Aug 30, 4:27 PM EDT	Special Weather Statement	PHI	Kent	33 min
Aug 30, 4:54 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	51 min

Nearby

Special Weather Statements in New Jersey, 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.