Alert archive / Maryland / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 14, 2012Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 14, 2012, 4:08 PM EDT for Caroline County, Maryland. It was in force for 82 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, 4:08 PM EDT (20:08 UTC)
Expired
Jul 14, 2012, 5:30 PM EDT
In force
82 min
Issued by
NWS Philadelphia/Mount Holly

County Caroline County, MD

The radar

The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 20:10 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, 8.1 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 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.

812 
WWUS81 KPHI 142008
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
408 PM EDT SAT JUL 14 2012

DEZ002-003-MDZ019-020-142130-
CAROLINE MD-INLAND SUSSEX DE-KENT DE-TALBOT MD-
408 PM EDT SAT JUL 14 2012

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

AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 8 MILES SOUTHEAST OF EASTON...MOVING NORTHEAST AT
15 MPH. THE THUNDERSTORM WILL BE NEAR HARMONY AROUND 415 PM...
AGNER...FEDERALSBURG AROUND 430 PM...SMITHVILLE...DENTON AROUND 445
PM...BRIDGEVILLE AROUND 500 PM...FARMINGTON AND ANDREWSVILLE AROUND
515 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO 
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.  DOPPLER RADAR 
STORM TOTAL ESTIMATES ARE SHOWING HALF AN INCH TO THREE QUARTERS OF 
AN INCH OF RAIN IS FALLING FROM THIS PARTICULAR THUNDERSTORM.

WIND GUSTS TO AROUND 35 MPH ARE POSSIBLE WITH THIS STORM. CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT SEEK SHELTER 
UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A 
THUNDERSTORM APPROACHES.

THERE ARE OTHER SHOWERS AND THUNDERSTORMS FARTHER TO THE WEST IN 
TALBOT COUNTY AND IN THE MARYLAND WESTERN SHORE THAT MAY AFFECT THE 
REGION LATER THIS AFTERNOON.


LAT...LON 3875 7604 3902 7560 3870 7538 3865 7572
      3868 7576 3867 7580 3870 7581 3870 7584
      3867 7594 3865 7595 3864 7597

$$
 
TFG

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, 9:39 AM EDTSpecial Weather StatementPHICaroline, Talbot51 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.