Alert archive / Delaware / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 13, 2016Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 13, 2016, 4:39 PM EDT for Sussex 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
Jul 13, 2016, 4:39 PM EDT (20:39 UTC)
Expired
Jul 13, 2016, 5:30 PM EDT
In force
51 min
Issued by
NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 20:38 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, 8.7 hours before the alert went out and 73 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 12:00Z on 2016-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 361 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2016-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939Sfc1 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
361 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

060 
WWUS81 KPHI 132039
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
439 PM EDT WED JUL 13 2016
 
DEZ003-132130-
INLAND SUSSEX-
439 PM EDT WED JUL 13 2016

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

AT 438 PM EDT...A STRONG THUNDERSTORM WAS OVER SHARPTOWN...OR 12
MILES SOUTHEAST OF HURLOCK...MOVING NORTHEAST AT 15 MPH.

WIND GUSTS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...SEAFORD...MILLSBORO...LAUREL...SELBYVILLE...DELMAR...
DAGSBORO...MILLVILLE...SYCAMORE...GUMBORO...LONG NECK...BLADES...
FRANKFORD AND BETHEL.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3846 7569 3869 7571 3872 7514 3862 7513
      3862 7515 3859 7518 3859 7521 3858 7518
      3857 7518 3859 7514 3859 7513 3845 7511
TIME...MOT...LOC 2038Z 225DEG 13KT 3854 7567 
$$

PO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 2:05 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer4 hr
Jul 13, 2:44 PM EDTExcessive Heat WarningPHIBurlington, Camden, Gloucester, Mercer52 hr
Jul 13, 2:44 PM EDTHeat AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland, Hunterdon, Middlesex and 6 more29 hr
Jul 13, 3:16 PM EDTAreal Flood AdvisoryPHIBucks, Chester, Montgomery4 hr
Jul 13, 4:12 PM EDTAreal Flood AdvisoryPHIBerks, Lehigh, Montgomery4 hr
Jul 13, 5:26 PM EDTAreal Flood AdvisoryPHICarbon, Monroe4 hr
Jul 13, 1:13 PM EDTAreal Flood AdvisoryPHICaroline, Queen Anne's, Talbot4 hr
Jul 13, 2:16 PM EDTAreal Flood AdvisoryPHICaroline4 hr
Jul 13, 2:34 PM EDTFlash Flood WarningPHICaroline, Talbot4 hr
Jul 13, 3:02 PM EDTFlash Flood WarningPHICaroline4 hr
Jul 13, 4:03 PM EDTSpecial Weather StatementPHISussex27 min
Jul 13, 5:02 PM EDTSpecial Weather StatementPHISussex58 min

Nearby

Special Weather Statements in Delaware, 2016Every special weather statement in 2016

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.