Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 5, 2012Sussex County, Delaware; Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 5, 2012, 8:43 PM EDT for Sussex County, Delaware; Caroline County, Maryland. 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 5, 2012, 8:43 PM EDT (00:43 UTC)
Expired
Jul 5, 2012, 9:45 PM EDT
In force
62 min
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 13 km from the middle of the area, began a volume at 00:43 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 00:00Z, 0.7 hours before the alert went out and 95 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 00:00Z on 2012-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2026 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 00:00Z on 2012-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.193958Sfc1 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
2026 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1736 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

617 
WWUS81 KPHI 060043
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
843 PM EDT THU JUL 5 2012

DEZ002>004-MDZ020-060145-
CAROLINE MD-DELAWARE BEACHES DE-INLAND SUSSEX DE-KENT DE-
843 PM EDT THU JUL 5 2012

...A STRONG THUNDERSTORM WILL AFFECT CAROLINE...KENT AND SUSSEX
COUNTIES...

AT 837 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 17 MILES SOUTHWEST OF DOVER...MOVING SOUTHEAST AT
35 MPH. THE THUNDERSTORM WILL BE NEAR ANDREWSVILLE...FELTON...
SMITHVILLE AROUND 850 PM...HARRINGTON...FARMINGTON AROUND 855 PM...
HOUSTON...GREENWOOD...BRIDGEVILLE AROUND 900 PM...MILFORD AROUND 905
PM AND ELLENDALE AROUND 910 PM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING
FROM THIS STORM.

LAT...LON 3887 7590 3908 7572 3892 7529 3880 7517
      3879 7515 3879 7511 3881 7510 3880 7508
      3867 7506 3867 7505 3855 7504 3850 7537

$$

FORECASTER:PO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 4:10 AM EDTExcessive Heat WatchPHIHunterdon, Middlesex, Monmouth, Morris, Ocean, Somerset11 hr
Jul 6, 4:10 AM EDTHeat AdvisoryPHISussex, Warren39 hr
Jul 5, 8:14 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot46 min

Nearby

Special Weather Statements in Delaware, 2012Special Weather Statements in Maryland, 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.