Alert archive / Maryland / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 14, 2012Caroline County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 14, 2012, 9:39 AM EDT for Caroline County, Talbot County, Maryland. It was in force for 51 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 14, 2012, 9:39 AM EDT (13:39 UTC)
Expired
Jul 14, 2012, 10:30 AM EDT
In force
51 min
Issued by
NWS Philadelphia/Mount Holly

Counties Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 47 km from the middle of the area, began a volume at 13:42 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, 1.7 hours before the alert went out and 107 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 2012-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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 2012-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 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
650 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
53 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.

169 
WWUS81 KPHI 141339
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
939 AM EDT SAT JUL 14 2012

MDZ015-019-020-141430-
CAROLINE MD-QUEEN ANNE'S MD-TALBOT MD-
939 AM EDT SAT JUL 14 2012

...HEAVY SHOWERS AND ISOLATED STRONG THUNDERSTORMS WILL AFFECT 
CAROLINE...QUEEN ANNE'S AND TALBOT COUNTIES...

AT 936 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
HEAVY SHOWERS WITH AN EMBEDDED  THUNDERSTORM ALONG A LINE 
EXTENDING FROM 8 MILES NORTH OF EASTON TO 2 MILES NORTHWEST OF 
EASTON TO 5 MILES WEST OF EASTON...MOVING EAST AT 15 MPH. THE 
SHOWERS AND ISOLATED THUNDERSTORMS WILL BE NEAR EASTON AROUND 945 
AM...CORDOVA AROUND 950 AM...HILLSBORO...QUEEN ANNE...JUMPTOWN 
AROUND 955 AM...HAMBLETON...TANYARD...MATTHEWS AROUND 1000 
AM...GRIFFIN AROUND 1005 AM AND WINDYHILL AROUND 1015 AM.

VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.  A NORTHWEST 
WIND GUST OF 25 TO 30 MPH IS POSSIBLE AS WELL AS A FEW LIGHTNING 
STRIKES. 

LAT...LON 3876 7624 3882 7620 3903 7615 3902 7592
      3889 7575 3867 7580 3870 7581 3870 7584
      3867 7594 3865 7595 3864 7597

$$

FORECASTER:DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 3:39 AM EDTExcessive Heat WatchPHIBurlington, Camden, Gloucester, Mercer36 hr
Jul 14, 3:22 PM EDTSpecial Weather StatementPHISussex83 min
Jul 14, 8:58 AM EDTSpecial Weather StatementPHIQueen Anne's, Talbot47 min
Jul 14, 4:08 PM EDTSpecial Weather StatementPHICaroline82 min

Nearby

Special 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.