Alert archive / Delaware / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

May 8, 2021Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at May 8, 2021, 3:39 PM EDT for Kent County, Delaware. It was in force for 36 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
May 8, 2021, 3:39 PM EDT (19:39 UTC)
Expired
May 8, 2021, 4:15 PM EDT
In force
36 min
Issued by
NWS Philadelphia/Mount Holly

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 20 km from the middle of the area, began a volume at 19:39 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, 7.7 hours before the alert went out and 119 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 12:00Z on 2021-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2021-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1134 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

552 
WWUS81 KPHI 081939
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
339 PM EDT Sat May 8 2021

DEZ002-003-MDZ020-082015-
Inland Sussex-Kent-Caroline-
339 PM EDT Sat May 8 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN SUSSEX...
KENT AND EAST CENTRAL CAROLINE COUNTIES...

At 339 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Dover to near Greensboro. Movement was
east at 35 mph.

Wind gusts up to 40 mph and penny size hail are possible with these
storms.

Locations impacted include...
Dover, Milford, Denton, Harrington, Camden, Ellendale, Bowers,
Woodside, Viola, Rising Sun-Lebanon, Dover Base Housing, Dover
Speedway, Sandtown, Andrewsville, Rising Sun, Big Stone Beach,
Wyoming, Felton, Greenwood and Frederica.

These storms 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 3909 7504 3867 7548 3892 7585 3922 7551
TIME...MOT...LOC 1939Z 288DEG 31KT 3915 7551 3896 7573 

$$

SFJ

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 11:22 AM EDTSpecial Weather StatementPHIMonmouth38 min
May 8, 1:12 PM EDTSpecial Weather StatementPHIMonmouth33 min
May 8, 1:15 PM EDTAreal Flood AdvisoryPHIMiddlesex, Monmouth58 min
May 8, 1:45 PM EDTSpecial Weather StatementPHIOcean15 min
May 8, 2:01 PM EDTSpecial Weather StatementPHIOcean14 min
May 8, 2:34 PM EDTSmall Craft AdvisoryPHI7 hr
May 8, 2:42 PM EDTSpecial Weather StatementPHIMiddlesex, Monmouth, Morris48 min
May 8, 2:47 PM EDTSpecial Marine WarningPHI31 min
May 8, 3:04 PM EDTSpecial Weather StatementPHISalem26 min
May 8, 3:23 PM EDTSpecial Weather StatementPHISalem37 min
May 8, 3:43 PM EDTSpecial Marine WarningPHI62 min
May 8, 3:46 PM EDTSpecial Weather StatementPHISomerset29 min
May 8, 3:53 PM EDTSpecial Marine WarningPHI56 min
May 8, 4:01 PM EDTSpecial Marine WarningPHI48 min
May 8, 4:16 PM EDTSpecial Weather StatementPHICumberland29 min
May 8, 4:21 PM EDTSpecial Weather StatementPHIHunterdon, Middlesex, Somerset24 min
May 8, 4:28 PM EDTSpecial Marine WarningPHI62 min
May 8, 4:46 PM EDTSpecial Weather StatementPHIHunterdon, Mercer, Middlesex, Somerset29 min
May 8, 5:22 PM EDTSpecial Marine WarningPHI53 min
May 8, 3:54 PM EDTSpecial Weather StatementPHISussex36 min
May 8, 4:15 PM EDTSpecial Weather StatementPHISussex30 min
May 8, 4:33 PM EDTSpecial Weather StatementPHISussex27 min
May 8, 5:56 PM EDTSpecial Weather StatementPHIKent34 min
May 8, 3:21 PM EDTSpecial Weather StatementPHIQueen Anne's24 min
May 8, 3:50 PM EDTSpecial Weather StatementPHICaroline25 min
May 8, 4:06 PM EDTSpecial Weather StatementPHICaroline24 min
May 8, 6:47 PM EDTSpecial Weather StatementPHICaroline28 min

Nearby

Special Weather Statements in Delaware, 2021Every 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.