Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 2, 2012Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 2, 2012, 4:01 PM EDT for Sussex County, Delaware. It was in force for 59 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: Aug 2, 2012, 4:01 PM EDT (20:01 UTC)
Expired: Aug 2, 2012, 5:00 PM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly

County Sussex County, DE

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.0 hours before the alert went out and 92 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: 1789 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 806 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

029 
WWUS81 KPHI 022001
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 PM EDT THU AUG 2 2012

DEZ003-004-022100-
DELAWARE BEACHES DE-INLAND SUSSEX DE-
401 PM EDT THU AUG 2 2012

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

AT 355 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 8 MILES NORTHEAST OF GEORGETOWN...MOVING 
NORTHEAST AT 5 MPH. THE THUNDERSTORM COULD BE NEAR LEWES AROUND 500 
PM IF IT CONTINUES TO MOVE AS IT APPEARS TO BE ALMOST STATIONARY.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 30 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

LAT...LON 3864 7529 3878 7538 3887 7524 3879 7515
      3879 7511 3881 7509 3880 7507 3868 7506
      3868 7509 3868 7511 3867 7513

$$

FORECASTER: HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 11:34 AM EDT	Coastal Flood Statement	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 2 more	14 hr
Aug 2, 2:58 PM EDT	Heat Advisory	PHI	Burlington, Camden, Gloucester, Mercer	28 hr
Aug 2, 2:56 PM EDT	Areal Flood Advisory	PHI	Sussex	108 min
Aug 2, 4:16 PM EDT	Areal Flood Advisory	PHI	Sussex	103 min
Aug 2, 4:33 PM EDT	Special Weather Statement	PHI	Kent	57 min
Aug 2, 5:02 PM EDT	Areal Flood Advisory	PHI	Kent, Sussex	3 hr
Aug 2, 5:22 PM EDT	Special Weather Statement	PHI	Kent	53 min
Aug 2, 7:01 PM EDT	Special Weather Statement	PHI	Sussex	59 min
Aug 2, 6:08 PM EDT	Special Weather Statement	PHI	Caroline	52 min
Aug 2, 6:36 PM EDT	Areal Flood Advisory	PHI	Caroline	2 hr

Nearby

Special Weather Statements in Delaware, 2012 Every special weather statement in 2012

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.