Alert archive / Maryland / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

March 9, 2012Kent County, Delaware; Caroline County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Mar 9, 2012, 2:28 AM EST for Kent County, Delaware; Caroline County, Talbot 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
Mar 9, 2012, 2:28 AM EST (07:28 UTC)
Expired
Mar 9, 2012, 3:30 AM EST
In force
62 min
Issued by
NWS Philadelphia/Mount Holly

Counties Kent County, DE, Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 40 km from the middle of the area, began a volume at 07:31 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, 7.5 hours before the alert went out and 108 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 2012-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1409 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
294 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.

944 
WWUS81 KPHI 090728
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
228 AM EST FRI MAR 9 2012

DEZ002-003-MDZ019-020-090830-
CAROLINE MD-INLAND SUSSEX DE-KENT DE-TALBOT MD-
228 AM EST FRI MAR 9 2012

...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT KENT...TALBOT...
CAROLINE AND SUSSEX COUNTIES...

AT 220 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH STRONG WIND GUSTS ALONG A LINE EXTENDING FROM 11 MILES
NORTHEAST OF DOVER TO 15 MILES SOUTHWEST OF DOVER TO 15 MILES WEST OF
EASTON...MOVING EAST AT 35 MPH. THE SHOWERS WILL BE NEAR CORDOVA...
COPPERVILLE...ST. MICHAELS...HILLSBORO AROUND 230 AM...VIOLA...
MAGNOLIA...FELTON AROUND 235 AM...GRIFFIN...OXFORD AND DENTON AROUND
240 AM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE SHOWERS...ALONG WITH A 
BRIEF PERIOD OF HEAVY RAINFALL.

LAT...LON 3864 7571 3868 7576 3870 7584 3867 7594
      3857 7604 3872 7626 3870 7635 3877 7640
      3875 7635 3887 7626 3881 7621 3888 7610
      3895 7609 3892 7596 3906 7580 3929 7542
      3926 7539 3906 7539 3879 7516 3849 7569

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 11:18 PM ESTSpecial Weather StatementPHISussex, Warren57 min
Mar 9, 12:01 AM ESTSpecial Weather StatementPHIHunterdon, Morris, Somerset, Sussex, Warren59 min
Mar 9, 12:58 AM ESTSpecial Weather StatementPHIGloucester, Hunterdon, Mercer, Middlesex, Morris, Somerset62 min
Mar 9, 1:09 AM ESTSpecial Marine WarningPHI96 min
Mar 9, 1:46 AM ESTSpecial Marine WarningPHI89 min
Mar 9, 1:56 AM ESTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Monmouth, Ocean64 min
Mar 9, 11:52 AM ESTSmall Craft AdvisoryPHI24 hr
Mar 9, 1:27 AM ESTSpecial Weather StatementPHIKent63 min
Mar 9, 12:50 AM ESTSpecial Weather StatementPHICecil, Kent, Queen Anne's40 min

Nearby

Special Weather Statements in Maryland, 2012Special 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.