Alert archive / Delaware / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 9, 2016Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 9, 2016, 3:13 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: Jul 9, 2016, 3:13 PM EDT (19:13 UTC)
Expired: Jul 9, 2016, 4:15 PM EDT
In force: 62 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, DE

The radar

The Dover AFB radar (KDOX), 32 km from the middle of the area, began a volume at 19:17 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, 7.2 hours before the alert went out and 82 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: 659 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1019 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

692 
WWUS81 KPHI 091913
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
313 PM EDT SAT JUL 9 2016
 
DEZ003-004-092015-
DELAWARE BEACHES-INLAND SUSSEX-
313 PM EDT SAT JUL 9 2016

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

AT 306 PM EDT...A STRONG THUNDERSTORM WAS NEAR GEORGETOWN OR 13
MILES WEST OF DEWEY BEACH...MOVING SOUTHEAST AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...MILLSBORO...MILTON AND LONG NECK. 

WIND GUSTS UP TO 30 MPH ARE POSSIBLE WITH THIS STORM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS SLOW-MOVING
STORM...AND MAY CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS. LOCALIZED RAINFALL AMOUNTS OF 1 TO 2
INCHES ARE POSSIBLE.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE OVER 15 MILES AWAY FROM A THUNDERSTORM AND
THREATEN THE DELAWARE BEACHES SHORTLY. FOR YOUR SAFETY...MOVE OFF
THE BEACH AND SEEK SHELTER INDOORS.

LAT...LON 3856 7529 3874 7547 3882 7540 3872 7507
      3867 7507 3869 7514 3864 7513 3862 7508
      3866 7507 3866 7506 3861 7506 3859 7521
      3858 7507 3860 7506 3854 7505
TIME...MOT...LOC 1912Z 316DEG 7KT 3873 7537 
$$

JRK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:12 PM EDT	Flash Flood Warning	PHI	Atlantic, Burlington	4 hr
Jul 9, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	50 min
Jul 9, 4:08 PM EDT	Special Marine Warning	PHI		67 min
Jul 9, 4:15 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	4 hr
Jul 9, 4:47 PM EDT	Special Weather Statement	PHI	Salem	43 min
Jul 9, 6:11 PM EDT	Special Weather Statement	PHI	Salem	34 min
Jul 9, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Salem	44 min
Jul 9, 6:33 PM EDT	Special Marine Warning	PHI		57 min
Jul 9, 6:43 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	4 hr
Jul 9, 7:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 9, 7:07 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	33 min
Jul 9, 7:33 PM EDT	Special Weather Statement	PHI	Warren	57 min
Jul 9, 12:35 PM EDT	Special Weather Statement	PHI	Berks	25 min
Jul 9, 12:59 PM EDT	Special Weather Statement	PHI	Berks	31 min
Jul 9, 1:27 PM EDT	Special Weather Statement	PHI	Berks	48 min
Jul 9, 2:40 PM EDT	Special Weather Statement	PHI	Chester	50 min
Jul 9, 3:17 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	43 min
Jul 9, 4:48 PM EDT	Special Weather Statement	PHI	Caroline, Talbot	57 min
Jul 9, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	30 min
Jul 9, 2:38 PM EDT	Special Weather Statement	PHI	Sussex	22 min
Jul 9, 4:11 PM EDT	Special Weather Statement	PHI	New Castle	34 min
Jul 9, 5:31 PM EDT	Special Weather Statement	PHI	New Castle	29 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.