Alert archive / Delaware / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

October 25, 2021Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 25, 2021, 5:27 PM EDT for Kent County, Delaware. It was in force for 33 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: Oct 25, 2021, 5:27 PM EDT (21:27 UTC)
Expired: Oct 25, 2021, 6:00 PM EDT
In force: 33 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.25 in
Wind: 40

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 17 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.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.5 hours before the alert went out and 114 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: 168 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 959 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

271 
WWUS81 KPHI 252127
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
527 PM EDT Mon Oct 25 2021
 
DEZ002-003-252200-
Inland Sussex DE-Kent DE-
527 PM EDT Mon Oct 25 2021

...Strong thunderstorms will impact portions of western Sussex and
southwestern Kent Counties through 600 PM EDT...

At 527 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Harrington to Laurel. Movement was north
at 25 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated. Wind gusts to around 40 mph have also been 
         observed.

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

Locations impacted include...
Dover, Georgetown, Milford, Seaford, Laurel, Harrington, Camden,
Bridgeville, Ellendale, Woodside, Viola, Rising Sun-Lebanon,
Hazlettville, Dover Speedway, Andrewsville, Rising Sun, Sycamore,
Wyoming, Felton and Blades.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3921 7553 3874 7534 3847 7556 3913 7574
TIME...MOT...LOC 2127Z 200DEG 20KT 3893 7564 3855 7554 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 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, 6:27 PM EDT	Special Weather Statement	PHI	Salem	33 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, 5:06 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 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.