Alert archive / Delaware / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

November 6, 2018Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Nov 6, 2018, 2:25 PM EST for Sussex County, Delaware. It was in force for 65 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: Nov 6, 2018, 2:25 PM EST (19:25 UTC)
Expired: Nov 6, 2018, 3:30 PM EST
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 33 km from the middle of the area, began a volume at 19:24 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, 7.4 hours before the alert went out and 81 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 522 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WWUS81 KPHI 061925
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
225 PM EST TUE NOV 6 2018

DEZ003-004-062030-
Inland Sussex-Delaware Beaches-
225 PM EST TUE NOV 6 2018

...A LINE OF SHOWERS WILL AFFECT EASTERN SUSSEX COUNTY...

At 225 PM EST, radar indicated a line of showers extending from near 
Milton to near Delmar. Movement was east at 35 mph.

Winds up to 40 mph are possible with these showers.

Locations impacted include...
Georgetown, Millsboro, Lewes, Milton, Selbyville, Dagsboro,
Millville, Henlopen Acres, Gumboro, Cape Henlopen State Park, Long
Neck, Ocean View, Frankford, South Bethany and Dewey Beach.

LAT...LON 3845 7555 3887 7526 3879 7516 3880 7509
      3867 7507 3869 7508 3869 7514 3864 7513
      3862 7508 3866 7507 3861 7506 3859 7521
      3857 7518 3858 7507 3860 7509 3860 7506
      3845 7505
TIME...MOT...LOC 1924Z 248DEG 32KT 3883 7525 3843 7552 

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 6, 4:32 AM EST	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Salem	11 hr
Nov 6, 11:47 AM EST	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more	2 hr
Nov 6, 12:53 PM EST	Special Weather Statement	PHI	Atlantic, Burlington, Cumberland, Monmouth, Ocean	52 min
Nov 6, 1:36 PM EST	Special Weather Statement	PHI	Atlantic, Ocean	39 min
Nov 6, 1:42 PM EST	Special Marine Warning	PHI		32 min
Nov 6, 12:13 PM EST	Special Weather Statement	PHI	Kent	62 min
Nov 6, 1:30 PM EST	Special Weather Statement	PHI	Sussex	60 min
Nov 6, 1:48 PM EST	Severe Thunderstorm Warning	PHI	Sussex	42 min

Nearby

Special Weather Statements in Delaware, 2018 Every special weather statement in 2018

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.