Alert archive / Delaware / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

June 22, 2012Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 22, 2012, 9:02 PM EDT for Kent County, Delaware. It was in force for 58 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 22, 2012, 9:02 PM EDT (01:02 UTC)
Expired
Jun 22, 2012, 10:00 PM EDT
In force
58 min
Issued by
NWS Philadelphia/Mount Holly

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 22 km from the middle of the area, began a volume at 01:05 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, 1.0 hours before the alert went out and 122 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 2012-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1073 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 00:00Z on 2012-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
1073 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1341 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

643 
WWUS81 KPHI 230102
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
902 PM EDT FRI JUN 22 2012

DEZ002-230200-
KENT DE-
902 PM EDT FRI JUN 22 2012

...STRONG THUNDERSTORMS WILL AFFECT KENT COUNTY...

AT 900 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STRONG THUNDERSTORMS OVER KENT COUNTY...MOVING EAST AT 20 MPH. THE 
THUNDERSTORM WILL BE NEAR WOODSIDE EAST...RIVERVIEW AROUND 900 
PM...MAGNOLIA...RISING SUN AROUND 915 PM...BOWERS AND LITTLE CREEK 
AROUND 930 PM.

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

THIS STORM WILL PRODUCE SMALL HAIL.

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 3893 7568 3912 7572 3923 7541 3919 7538
      3918 7540 3907 7539 3900 7532 3898 7530
      3895 7530 3895 7539 3892 7541 3891 7546

$$

NIERENBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 8:00 PM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean45 min
Jun 22, 8:15 PM EDTFlash Flood WarningPHISalem53 min
Jun 22, 8:19 PM EDTFlash Flood WarningPHICumberland, Gloucester, Salem70 min
Jun 22, 8:27 PM EDTSevere Thunderstorm WarningPHICumberland, Salem45 min
Jun 22, 8:28 PM EDTSpecial Marine WarningPHI62 min
Jun 22, 8:59 PM EDTSpecial Weather StatementPHICape May61 min
Jun 22, 9:14 PM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more61 min
Jun 22, 9:15 PM EDTAreal Flood AdvisoryPHIAtlantic, Cape May, Cumberland, Gloucester2 hr
Jun 22, 9:34 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Monmouth, Ocean116 min
Jun 22, 9:29 PM EDTSpecial Weather StatementPHISussex61 min
Jun 22, 9:57 PM EDTSpecial Weather StatementPHISussex63 min
Jun 22, 10:50 PM EDTSpecial Weather StatementPHISussex85 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.