Alert archive / Delaware / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

June 21, 2016Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 21, 2016, 4:28 PM EDT for Sussex County, Delaware. It was in force for 62 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: Jun 21, 2016, 4:28 PM EDT (20:28 UTC)
Expired: Jun 21, 2016, 5:30 PM EDT
In force: 62 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 23 km from the middle of the area, began a volume at 20:29 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, 8.5 hours before the alert went out and 77 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: 165 J/kg
Mixed-layer CIN: -158 J/kg
Mixed-layer LCL: 1450 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WWUS81 KPHI 212028
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
428 PM EDT TUE JUN 21 2016
 
DEZ003-004-MDZ019-020-212130-
DELAWARE BEACHES-INLAND SUSSEX-CAROLINE-TALBOT-
428 PM EDT TUE JUN 21 2016

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

AT 427 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR CAPE HENLOPEN STATE PARK TO NEAR GEORGETOWN TO
NEAR HURLOCK...AND MOVING SOUTHEAST AT 35 MPH.

WIND GUSTS UP TO 40 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...SEAFORD...MILLSBORO...LAUREL...LEWES...FEDERALSBURG...
MILTON...SELBYVILLE...BRIDGEVILLE...DELMAR...DAGSBORO...PRESTON...
MILLVILLE...HENLOPEN ACRES...CHOPTANK...SYCAMORE...
CAPE HENLOPEN STATE PARK...GUMBORO...LONG NECK AND OCEAN VIEW.

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 3845 7557 3853 7570 3864 7571 3869 7577
      3871 7584 3867 7595 3871 7603 3880 7509
      3867 7507 3869 7508 3869 7514 3864 7513
      3862 7508 3866 7507 3861 7506 3859 7521
      3860 7506 3845 7505
TIME...MOT...LOC 2027Z 301DEG 31KT 3877 7506 3872 7546 3868 7584 
$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 3:37 AM EDT	Special Weather Statement	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	83 min
Jun 21, 3:58 AM EDT	Special Weather Statement	PHI	Warren	47 min
Jun 21, 4:57 AM EDT	Special Weather Statement	PHI	Hunterdon	63 min
Jun 21, 6:16 AM EDT	Special Weather Statement	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	59 min
Jun 21, 6:18 AM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Ocean	46 min
Jun 21, 6:48 AM EDT	Small Craft Advisory	PHI		9 hr
Jun 21, 2:17 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland	58 min
Jun 21, 2:20 PM EDT	Special Marine Warning	PHI		55 min
Jun 21, 2:51 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	54 min
Jun 21, 2:55 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	35 min
Jun 21, 2:58 PM EDT	Special Marine Warning	PHI		62 min
Jun 21, 3:05 PM EDT	Special Marine Warning	PHI		85 min
Jun 21, 3:36 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	54 min
Jun 21, 3:40 PM EDT	Tornado Warning	PHI	Cape May	24 min
Jun 21, 3:46 PM EDT	Special Marine Warning	PHI		89 min
Jun 21, 3:52 PM EDT	Special Marine Warning	PHI		83 min
Jun 21, 3:56 PM EDT	Small Craft Advisory for Hazardous Seas	PHI		17 hr
Jun 21, 4:06 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	39 min
Jun 21, 4:11 PM EDT	Special Marine Warning	PHI		64 min
Jun 21, 4:18 PM EDT	Special Marine Warning	PHI		87 min
Jun 21, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	30 min
Jun 21, 5:29 PM EDT	Special Weather Statement	PHI	Monmouth	46 min
Jun 21, 7:09 PM EDT	Special Weather Statement	PHI	Mercer	51 min
Jun 21, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	40 min
Jun 21, 7:27 PM EDT	Special Marine Warning	PHI		48 min
Jun 21, 7:37 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Monmouth	4 hr
Jun 21, 7:51 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	39 min
Jun 21, 7:57 PM EDT	Special Marine Warning	PHI		63 min
Jun 21, 3:17 AM EDT	Special Weather Statement	PHI	Carbon, Monroe	28 min
Jun 21, 5:38 PM EDT	Special Weather Statement	PHI	Chester, Delaware	52 min
Jun 21, 1:52 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	53 min
Jun 21, 2:08 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	67 min
Jun 21, 2:32 PM EDT	Tornado Warning	PHI	Kent, Queen Anne's, Talbot	28 min
Jun 21, 2:55 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	65 min
Jun 21, 3:52 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	53 min
Jun 21, 6:36 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	54 min
Jun 21, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's	40 min

Nearby

Special Weather Statements in Delaware, 2016 Every 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.