Alert archive / Delaware / Special Weather Statements in 2017
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jul 5, 2017, 4:22 AM EDT for Kent County, Delaware. It was in force for 38 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
- Jul 5, 2017, 4:22 AM EDT (08:22 UTC)
- Expired
- Jul 5, 2017, 5:00 AM EDT
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
County Kent County, DE
The radar
The Dover AFB radar (KDOX), 40 km from the middle of the area, began a volume at 08:21 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, 8.4 hours before the alert went out and 133 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
- 169 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1351 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
497 WWUS81 KPHI 050822 SPSPHI Special Weather Statement National Weather Service Mount Holly NJ 422 AM EDT WED JUL 5 2017 DEZ002-MDZ015-020-050900- Kent-Queen Anne's-Caroline- 422 AM EDT WED JUL 5 2017 ...A CLUSTER OF SHOWERS WILL AFFECT NORTHWESTERN KENT...EAST CENTRAL QUEEN ANNE'S AND NORTHEASTERN CAROLINE COUNTIES... At 419 AM EDT, a cluster of showers was located over Hartly, or 9 miles west of Dover, moving northeast at 10 mph. Locations impacted include... Dover, Goldsboro, Hartly, Hazlettville, Sandtown, Wyoming, Kenton, Henderson, Marydel, Templeville and Rodney Village. Heavy rainfall is also occurring with this storm...and may cause ponding on roadways and poor drainage areas. Do not drive your vehicle through flooded roadways. Occasional cloud to ground lightning may develop with these showers. Lightning can strike 15 miles away from a thunderstorm. If you see lightning or hear thunder seek a safe shelter inside a building or vehicle. LAT...LON 3898 7580 3908 7591 3929 7571 3915 7550 TIME...MOT...LOC 0821Z 217DEG 7KT 3916 7570 $$ Robertson
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:38 PM EDT | Areal Flood Advisory | PHI | Camden, Gloucester | 2 hr |
| Jul 5, 5:32 AM EDT | Marine Dense Fog Advisory | PHI | 6 hr |
Nearby
Special Weather Statements in Delaware, 2017Every special weather statement in 2017
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.