Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

February 24, 2012Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Feb 24, 2012, 3:49 PM EST for Kent County, Delaware. It was in force for 26 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
Feb 24, 2012, 3:49 PM EST (20:49 UTC)
Expired
Feb 24, 2012, 4:15 PM EST
In force
26 min
Issued by
NWS Philadelphia/Mount Holly

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 47 km from the middle of the area, began a volume at 20:52 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, 8.8 hours before the alert went out and 147 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 2012-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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 2012-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 336 square meters per square second.1939587897117136156Sfc1 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
50 J/kg
Mixed-layer CIN
-208 J/kg
Mixed-layer LCL
884 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
336 m²/s²
0-3 km storm-relative helicity
348 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

065 
WWUS81 KPHI 242049
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
349 PM EST FRI FEB 24 2012

DEZ002-242115-
KENT DE-
349 PM EST FRI FEB 24 2012

...A FEW STRONG THUNDERSTORMS WILL AFFECT KENT COUNTY...

AT 348 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES NORTHWEST OF DOVER...MOVING NORTHEAST AT
50 MPH. THE THUNDERSTORM WILL BE NEAR LEIPSIC AROUND 355 PM AND
WOODLAND BEACH AROUND 400 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

THIS STORM WILL PRODUCE SMALL HAIL.

LAT...LON 3926 7574 3929 7568 3931 7559 3935 7555
      3935 7554 3937 7550 3932 7543 3929 7543
      3926 7539 3907 7539 3903 7535 3902 7571

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 3:34 AM ESTGale WarningPHI45 hr
Feb 24, 3:40 AM ESTWind AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more42 hr
Feb 24, 4:06 AM ESTSpecial Weather StatementPHIAtlantic, Camden, Cumberland54 min
Feb 24, 4:38 PM ESTSpecial Marine WarningPHI82 min
Feb 24, 4:07 PM ESTSpecial Weather StatementPHIKent, Sussex53 min
Feb 24, 4:14 PM ESTSevere Thunderstorm WarningPHISussex31 min
Feb 24, 5:03 PM ESTSpecial Weather StatementPHISussex42 min
Feb 24, 3:16 PM ESTSpecial Weather StatementPHICaroline, Queen Anne's, Talbot44 min
Feb 24, 3:29 PM ESTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot46 min

Nearby

Special Weather Statements in Delaware, 2012Every 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; radar from the NEXRAD Level II archive.