Alert archive / Delaware / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 28, 2016Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 28, 2016, 7:22 PM EDT for Sussex 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 28, 2016, 7:22 PM EDT (23:22 UTC)
Expired
Jul 28, 2016, 8:00 PM EDT
In force
38 min
Issued by
NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 30 km from the middle of the area, began a volume at 23:25 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, 11.4 hours before the alert went out and 78 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 2016-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1169 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 12:00Z on 2016-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
1169 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

289 
WWUS81 KPHI 282322
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
722 PM EDT THU JUL 28 2016
 
DEZ003-004-290000-
DELAWARE BEACHES-INLAND SUSSEX-
722 PM EDT THU JUL 28 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN SUSSEX AND
SOUTHEASTERN CAROLINE COUNTIES...

AT 721 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR HENLOPEN ACRES TO NEAR GUMBORO TO NEAR
SHARPTOWN...AND MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...SEAFORD...MILLSBORO...LAUREL...LEWES...SELBYVILLE...
DELMAR...DAGSBORO...MILLVILLE...HENLOPEN ACRES...SYCAMORE...
GUMBORO...LONG NECK...OCEAN VIEW...BLADES...FRANKFORD...
SOUTH BETHANY...DEWEY BEACH AND BETHEL.

WIND GUSTS UP TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH
THIS STORM.

HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND WILL CAUSE
LOCALIZED FLOODING ON ROADWAYS AND POOR DRAINAGE AREAS. DO NOT
DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3846 7569 3864 7571 3866 7553 3878 7510
      3869 7507 3868 7507 3869 7508 3869 7514
      3864 7513 3862 7508 3866 7507 3861 7506
      3862 7510 3859 7521 3857 7518 3857 7510
      3860 7506 3845 7505
TIME...MOT...LOC 2321Z 308DEG 27KT 3869 7508 3851 7535 3850 7572 
$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 2:03 PM EDTSpecial Marine WarningPHI57 min
Jul 28, 2:20 PM EDTSpecial Marine WarningPHI55 min
Jul 28, 2:30 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester45 min
Jul 28, 2:36 PM EDTAreal Flood AdvisoryPHIGloucester, Salem4 hr
Jul 28, 3:04 PM EDTSpecial Marine WarningPHI116 min
Jul 28, 3:54 PM EDTAreal Flood AdvisoryPHIAtlantic, Cumberland, Gloucester, Salem4 hr
Jul 28, 3:58 PM EDTAreal Flood AdvisoryPHIBurlington, Monmouth, Ocean4 hr
Jul 28, 4:04 PM EDTSpecial Weather StatementPHISalem41 min
Jul 28, 4:46 PM EDTSpecial Weather StatementPHIAtlantic59 min
Jul 28, 5:05 PM EDTSpecial Marine WarningPHI85 min
Jul 28, 5:17 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Ocean4 hr
Jul 28, 6:12 PM EDTSevere Thunderstorm WarningPHICape May63 min
Jul 28, 6:23 PM EDTSpecial Marine WarningPHI67 min
Jul 28, 6:38 PM EDTSpecial Marine WarningPHI97 min
Jul 28, 6:48 PM EDTAreal Flood AdvisoryPHIAtlantic, Cape May, Cumberland4 hr
Jul 28, 6:51 PM EDTSevere Thunderstorm WarningPHICape May28 min
Jul 28, 6:56 PM EDTSpecial Marine WarningPHI64 min
Jul 28, 7:32 PM EDTSpecial Marine WarningPHI88 min
Jul 28, 12:58 PM EDTSevere Thunderstorm WarningPHIChester47 min
Jul 28, 1:24 PM EDTSevere Thunderstorm WarningPHIChester, Delaware51 min
Jul 28, 3:28 PM EDTSevere Thunderstorm WarningPHIBerks27 min
Jul 28, 3:41 PM EDTAreal Flood AdvisoryPHIBerks4 hr
Jul 28, 4:50 PM EDTAreal Flood AdvisoryPHIBerks4 hr
Jul 28, 12:52 PM EDTTornado Warning Tornado observedPHICaroline, Talbot23 min
Jul 28, 1:20 PM EDTSevere Thunderstorm WarningPHICaroline40 min
Jul 28, 3:52 PM EDTSpecial Weather StatementPHIKent38 min
Jul 28, 4:31 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's44 min
Jul 28, 4:56 PM EDTAreal Flood AdvisoryPHICaroline, Kent, Queen Anne's4 hr
Jul 28, 5:14 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot46 min
Jul 28, 5:56 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot49 min
Jul 28, 6:12 PM EDTSpecial Weather StatementPHICaroline48 min
Jul 28, 6:15 PM EDTAreal Flood AdvisoryPHICaroline, Queen Anne's, Talbot4 hr
Jul 28, 6:25 PM EDTSevere Thunderstorm WarningPHICaroline65 min
Jul 28, 6:53 PM EDTAreal Flood AdvisoryPHICaroline, Talbot4 hr
Jul 28, 1:42 PM EDTSpecial Weather StatementPHINew Castle33 min
Jul 28, 1:58 PM EDTSpecial Weather StatementPHISussex62 min
Jul 28, 2:30 PM EDTSevere Thunderstorm WarningPHIKent47 min
Jul 28, 2:44 PM EDTAreal Flood AdvisoryPHIKent4 hr
Jul 28, 4:38 PM EDTSpecial Weather StatementPHIKent52 min
Jul 28, 4:52 PM EDTSevere Thunderstorm WarningPHIKent38 min
Jul 28, 5:24 PM EDTSevere Thunderstorm WarningPHIKent, Sussex51 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.