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 Aug 28, 2021, 12:08 AM EDT for Sussex County, Delaware. It was in force for 37 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
- Aug 28, 2021, 12:08 AM EDT (04:08 UTC)
- Expired
- Aug 28, 2021, 12:45 AM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.00 in
- Wind
- 40
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 32 km from the middle of the area, began a volume at 04:10 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 00:00Z, 4.1 hours before the alert went out and 83 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
- 2567 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
246
WWUS81 KPHI 280408
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1208 AM EDT Sat Aug 28 2021
DEZ003-MDZ020-280445-
Inland Sussex DE-Caroline MD-
1208 AM EDT Sat Aug 28 2021
...A strong thunderstorm will impact portions of southwestern Sussex
and southeastern Caroline Counties through 1245 AM EDT...
At 1207 AM EDT, Doppler radar was tracking a strong thunderstorm near
Federalsburg, or 7 miles east of Hurlock, moving northeast at 25 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Seaford, Laurel, Federalsburg, Bridgeville, Blades, Greenwood and
Bethel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3846 7569 3865 7571 3869 7577 3868 7580
3870 7580 3871 7584 3870 7587 3884 7559
3846 7545
TIME...MOT...LOC 0407Z 243DEG 22KT 3862 7573
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 10:46 PM EDT | Areal Flood Advisory | PHI | Cape May | 119 min |
| Aug 28, 3:06 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 2 hr |
| Aug 28, 3:11 AM EDT | Special Marine Warning | PHI | 64 min | |
| Aug 28, 8:07 AM EDT | Areal Flood Advisory | PHI | Hunterdon | 3 hr |
| Aug 28, 11:57 AM EDT | Flash Flood Warning | PHI | Gloucester | 3 hr |
| Aug 28, 11:58 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May | 3 hr |
| Aug 28, 2:47 AM EDT | Areal Flood Advisory | PHI | Berks | 2 hr |
| Aug 28, 4:06 AM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 28, 9:06 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Northampton | 3 hr |
| Aug 27, 8:29 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 27, 8:57 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 27, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 41 min |
| Aug 27, 9:09 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Aug 27, 9:44 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 27, 11:19 PM EDT | Special Weather Statement | PHI | Talbot | 26 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.