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 22, 2021, 10:24 AM EDT for Kent County, Delaware. It was in force for 51 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 22, 2021, 10:24 AM EDT (14:24 UTC)
- Expired
- Aug 22, 2021, 11:15 AM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.00 in
- Wind
- 40
County Kent County, DE
The radar
The Dover AFB radar (KDOX), 8 km from the middle of the area, began a volume at 14:24 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, 2.4 hours before the alert went out and 107 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
- 1445 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 876 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
913
WWUS81 KPHI 221424
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1024 AM EDT Sun Aug 22 2021
DEZ002-003-221515-
Inland Sussex DE-Kent DE-
1024 AM EDT Sun Aug 22 2021
...A strong thunderstorm will impact portions of northeastern Sussex
and southeastern Kent Counties through 1115 AM EDT...
At 1023 AM EDT, Doppler radar was tracking a strong thunderstorm near
Milford, or 14 miles south of Dover, moving southeast at 15 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...
Georgetown, Milford, Harrington, Milton, Ellendale, Bowers, Big Stone
Beach, Frederica, Houston, Farmington and Riverview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3892 7565 3912 7540 3883 7518 3868 7542
TIME...MOT...LOC 1423Z 306DEG 14KT 3896 7546
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 9:35 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Monmouth, Ocean | 3 hr |
| Aug 21, 10:47 PM EDT | Areal Flood Advisory | PHI | Morris | 3 hr |
| Aug 21, 11:38 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Monmouth, Ocean | 3 hr |
| Aug 22, 12:04 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Monmouth, Ocean | 3 hr |
| Aug 22, 12:24 AM EDT | Flash Flood Warning | PHI | Morris | 3 hr |
| Aug 22, 1:30 AM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 4 hr |
| Aug 22, 1:35 AM EDT | Areal Flood Advisory | PHI | Morris, Somerset | 3 hr |
| Aug 22, 2:04 AM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 9 hr |
| Aug 22, 2:09 AM EDT | Flash Flood Warning | PHI | Burlington, Ocean | 5 hr |
| Aug 22, 2:40 AM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset | 5 hr |
| Aug 22, 3:10 AM EDT | Flash Flood Warning | PHI | Burlington, Hunterdon, Mercer, Monmouth, Ocean | 8 hr |
| Aug 22, 4:21 AM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 3 hr |
| Aug 22, 5:36 AM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth, Somerset | 5 hr |
| Aug 22, 6:07 AM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 67 min |
| Aug 22, 7:52 AM EDT | Areal Flood Warning | PHI | Hunterdon, Somerset | 15 hr |
| Aug 22, 10:43 AM EDT | Special Marine Warning | PHI | 62 min | |
| Aug 22, 10:49 AM EDT | Areal Flood Warning | PHI | Middlesex, Monmouth, Somerset | 13 hr |
| Aug 22, 10:52 AM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Monmouth | 13 hr |
| Aug 22, 11:06 AM EDT | Special Marine Warning | PHI | 54 min | |
| Aug 22, 1:35 PM EDT | Coastal Flood Advisory | PHI | Cape May | 10 hr |
| Aug 22, 1:53 PM EDT | Areal Flood Advisory | PHI | Morris | 6 hr |
| Aug 22, 3:21 PM EDT | River Flood Warning | PHI | Somerset | 54 hr |
| Aug 22, 5:07 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 6 hr |
| Aug 22, 5:48 PM EDT | Flash Flood Warning | PHI | Morris, Sussex, Warren | 6 hr |
| Aug 21, 11:49 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 22, 6:38 PM EDT | Special Weather Statement | PHI | Monroe | 37 min |
| Aug 22, 9:41 AM EDT | Areal Flood Advisory | PHI | Kent | 2 hr |
| Aug 22, 9:57 AM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 22, 10:37 AM EDT | Special Weather Statement | PHI | Sussex | 53 min |
| Aug 22, 10:52 AM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Aug 22, 9:28 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 47 min |
| Aug 22, 10:01 AM EDT | Special Weather Statement | PHI | Caroline | 44 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.