Alert archive / Delaware / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 21, 2021, 9:28 PM EDT for Kent County, Delaware. It was in force for 47 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
- Jun 21, 2021, 9:28 PM EDT (01:28 UTC)
- Expired
- Jun 21, 2021, 10:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
County Kent County, DE
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 01:29 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.5 hours before the alert went out and 148 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.
- Mixed-layer CAPE
- 909 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
630
WWUS81 KPHI 220128
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
928 PM EDT Mon Jun 21 2021
DEZ001-002-MDZ012-015-220215-
Kent-New Castle-Queen Anne's-Kent-
928 PM EDT Mon Jun 21 2021
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN NEW CASTLE...
NORTHERN KENT...NORTHEASTERN QUEEN ANNE'S AND NORTHEASTERN KENT
COUNTIES...
At 927 PM EDT, a strong thunderstorm was located over Crumpton, or 16
miles southwest of Middletown, moving east at 25 mph.
Wind gusts up to 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Dover, Middletown, Smyrna, Camden, Clayton, Cheswold, Millington,
Sudlersville, Hartly, Woodland Beach, Delaney Corner, Crumpton, Dover
Speedway, Sassafras, Green Spring, Massey, Dover Base Housing,
Townsend, Wyoming and Galena.
LAT...LON 3937 7595 3936 7588 3938 7582 3938 7577
3944 7577 3945 7575 3945 7554 3924 7536
3911 7536 3914 7575 3915 7594 3936 7598
TIME...MOT...LOC 0127Z 272DEG 20KT 3927 7592
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 62 min |
| Jun 21, 8:31 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jun 21, 10:01 PM EDT | Special Marine Warning | PHI | 29 min | |
| Jun 22, 11:46 AM EDT | Special Marine Warning | PHI | 44 min | |
| Jun 22, 12:51 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jun 22, 1:25 PM EDT | Special Marine Warning | PHI | 65 min | |
| Jun 22, 1:47 PM EDT | Special Marine Warning | PHI | 118 min | |
| Jun 22, 2:27 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jun 22, 3:05 PM EDT | Small Craft Advisory | PHI | 15 hr | |
| Jun 22, 3:26 PM EDT | Special Marine Warning | PHI | 68 min | |
| Jun 21, 9:03 PM EDT | Special Weather Statement | PHI | Kent | 27 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.