Alert archive / Delaware / Special Weather Statements in 2020

Special Weather Statement, NWS Philadelphia/Mount Holly

August 6, 2020Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 6, 2020, 7:46 AM EDT for Sussex County, Delaware. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 6, 2020, 7:46 AM EDT (11:46 UTC)
Expired
Aug 6, 2020, 8:15 AM EDT
In force
29 min
Issued by
NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 34 km from the middle of the area, began a volume at 11:45 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.

What was reported inside it

TimeReportWhereRemark
Aug 6, 8:17 AM EDTTSTM WND DMG2 N Gumboro, DEDOWNED WIRES NEAR GUMBORO. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 11.8 hours before the alert went out and 66 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2020-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1920 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2020-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1920 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

329 
WWUS81 KPHI 061146
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
746 AM EDT Thu Aug 6 2020

DEZ003-061215-
Inland Sussex-
746 AM EDT Thu Aug 6 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN SUSSEX COUNTY...

At 746 AM EDT, a strong thunderstorm was located near Laurel, or 10
miles north of Salisbury, moving northeast at 30 mph.

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

Locations impacted include...
Millsboro, Laurel, Selbyville, Delmar, Dagsboro, Sycamore, Gumboro
and Frankford.

Frequent 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 3845 7539 3846 7561 3853 7566 3866 7537
      3866 7519 3845 7516
TIME...MOT...LOC 1146Z 246DEG 27KT 3852 7552 

$$

Gorse

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:37 AM EDTFlash Flood WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more44 hr
Aug 6, 5:27 AM EDTSpecial Marine WarningPHI63 min
Aug 6, 6:58 AM EDTSpecial Marine WarningPHI92 min
Aug 6, 7:03 AM EDTAreal Flood AdvisoryPHIAtlantic, Cumberland, Gloucester, Salem3 hr
Aug 6, 7:18 AM EDTSevere Thunderstorm WarningPHICumberland, Salem42 min
Aug 6, 7:27 AM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland48 min
Aug 6, 7:31 AM EDTSpecial Marine WarningPHI59 min
Aug 6, 7:33 AM EDTFlash Flood WarningPHICumberland, Salem2 hr
Aug 6, 7:33 AM EDTSpecial Marine WarningPHI57 min
Aug 6, 7:47 AM EDTSpecial Marine WarningPHI88 min
Aug 6, 7:52 AM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland53 min
Aug 6, 8:04 AM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland41 min
Aug 6, 8:09 AM EDTSpecial Marine WarningPHI66 min
Aug 6, 8:23 AM EDTSpecial Marine WarningPHI67 min
Aug 6, 8:34 AM EDTSpecial Weather StatementPHIAtlantic26 min
Aug 6, 6:13 AM EDTSevere Thunderstorm WarningPHIKent, New Castle, Sussex62 min
Aug 6, 6:43 AM EDTAreal Flood AdvisoryPHIKent, New Castle3 hr
Aug 6, 6:49 AM EDTSevere Thunderstorm WarningPHIKent, New Castle41 min
Aug 6, 7:13 AM EDTFlash Flood WarningPHIKent, New Castle3 hr
Aug 6, 7:13 AM EDTSevere Thunderstorm WarningPHIKent, Sussex47 min
Aug 6, 8:16 AM EDTSevere Thunderstorm WarningPHISussex44 min
Aug 6, 5:36 AM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot39 min
Aug 6, 6:19 AM EDTAreal Flood AdvisoryPHIKent, Queen Anne's116 min
Aug 6, 8:43 AM EDTAreal Flood AdvisoryPHICecil, Kent, Queen Anne's87 min

Nearby

Special Weather Statements in Delaware, 2020Every special weather statement in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.