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, 5:56 PM EDT for Kent County, Delaware. It was in force for 34 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, 5:56 PM EDT (21:56 UTC)
Expired: May 8, 2021, 6:30 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 21:58 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 hours before the alert went out and 144 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: 1 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 915 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WWUS81 KPHI 082156
SPSPHI

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

DEZ001-002-MDZ012-015-020-082230-
Kent-New Castle-Queen Anne's-Kent-Caroline-
556 PM EDT Sat May 8 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN NEW CASTLE...
NORTHERN KENT...NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN CAROLINE AND
NORTHEASTERN KENT COUNTIES...

At 555 PM EDT, a strong thunderstorm was located over Massey, or 13
miles southwest of Middletown, moving southeast at 35 mph.

Wind gusts up to 40 mph and penny size hail are possible with this
storm.

Locations impacted include...
Dover, Smyrna, Camden, Clayton, Cheswold, Millington, Sudlersville,
Woodside, Viola, Hartly, Rising Sun-Lebanon, Hazlettville, Delaney
Corner, Dover Base Housing, Crumpton, Dover Speedway, Sassafras,
Rising Sun, Massey and Morgnec.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3937 7592 3936 7589 3938 7581 3921 7539
      3898 7559 3926 7601
TIME...MOT...LOC 2155Z 303DEG 31KT 3930 7587 

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 11:22 AM EDT	Special Weather Statement	PHI	Monmouth	38 min
May 8, 1:12 PM EDT	Special Weather Statement	PHI	Monmouth	33 min
May 8, 1:15 PM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth	58 min
May 8, 1:45 PM EDT	Special Weather Statement	PHI	Ocean	15 min
May 8, 2:01 PM EDT	Special Weather Statement	PHI	Ocean	14 min
May 8, 2:34 PM EDT	Small Craft Advisory	PHI		7 hr
May 8, 2:42 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth, Morris	48 min
May 8, 2:47 PM EDT	Special Marine Warning	PHI		31 min
May 8, 3:04 PM EDT	Special Weather Statement	PHI	Salem	26 min
May 8, 3:23 PM EDT	Special Weather Statement	PHI	Salem	37 min
May 8, 3:43 PM EDT	Special Marine Warning	PHI		62 min
May 8, 3:46 PM EDT	Special Weather Statement	PHI	Somerset	29 min
May 8, 3:53 PM EDT	Special Marine Warning	PHI		56 min
May 8, 4:01 PM EDT	Special Marine Warning	PHI		48 min
May 8, 4:16 PM EDT	Special Weather Statement	PHI	Cumberland	29 min
May 8, 4:21 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	24 min
May 8, 4:28 PM EDT	Special Marine Warning	PHI		62 min
May 8, 4:46 PM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Somerset	29 min
May 8, 5:22 PM EDT	Special Marine Warning	PHI		53 min
May 8, 3:39 PM EDT	Special Weather Statement	PHI	Kent	36 min
May 8, 3:54 PM EDT	Special Weather Statement	PHI	Sussex	36 min
May 8, 4:15 PM EDT	Special Weather Statement	PHI	Sussex	30 min
May 8, 4:33 PM EDT	Special Weather Statement	PHI	Sussex	27 min
May 8, 3:21 PM EDT	Special Weather Statement	PHI	Queen Anne's	24 min
May 8, 3:50 PM EDT	Special Weather Statement	PHI	Caroline	25 min
May 8, 4:06 PM EDT	Special Weather Statement	PHI	Caroline	24 min
May 8, 6:47 PM EDT	Special Weather Statement	PHI	Caroline	28 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.