Alert archive / Maryland / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

August 15, 2016Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 15, 2016, 9:22 PM EDT for Caroline County, Maryland. It was in force for 53 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
Aug 15, 2016, 9:22 PM EDT (01:22 UTC)
Expired
Aug 15, 2016, 10:15 PM EDT
In force
53 min
Issued by
NWS Philadelphia/Mount Holly

County Caroline County, MD

The radar

The Dover AFB radar (KDOX), 33 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 96 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 2016-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 558 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 2016-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
558 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
1534 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

269 
WWUS81 KPHI 160122
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
922 PM EDT MON AUG 15 2016
 
DEZ002-003-MDZ020-160215-
KENT-INLAND SUSSEX-CAROLINE-
922 PM EDT MON AUG 15 2016

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN KENT...NORTHWESTERN
SUSSEX...EASTERN TALBOT AND SOUTHERN CAROLINE COUNTIES...

AT 921 PM EDT...A STRONG THUNDERSTORM WAS OVER PRESTON...OR 7 MILES
NORTH OF HURLOCK...MOVING EAST AT 15 MPH.

WIND GUSTS UP TO 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HARRINGTON...FEDERALSBURG...BRIDGEVILLE...PRESTON...CHOPTANK...
HARMONY...ANDREWSVILLE...TANYARD...AGNER...SMITHVILLE...
GREENWOOD AND FARMINGTON.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3869 7577 3868 7580 3870 7580 3871 7584
      3870 7590 3868 7593 3868 7597 3876 7599
      3881 7590 3883 7591 3897 7553 3868 7545
      3866 7573
TIME...MOT...LOC 0121Z 259DEG 15KT 3873 7592 
$$

PO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 7:10 PM EDTSpecial Weather StatementPHIMorris35 min
Aug 16, 4:08 PM EDTSpecial Weather StatementPHIBerks67 min
Aug 16, 4:23 PM EDTSevere Thunderstorm WarningPHIBerks, Chester, Montgomery52 min
Aug 16, 5:08 PM EDTSpecial Weather StatementPHIChester52 min
Aug 16, 5:10 PM EDTSpecial Weather StatementPHICarbon35 min
Aug 16, 5:19 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh, Northampton41 min
Aug 16, 5:36 PM EDTSpecial Weather StatementPHIChester, Delaware54 min
Aug 16, 5:44 PM EDTSpecial Weather StatementPHICarbon, Monroe61 min
Aug 16, 6:31 PM EDTSpecial Weather StatementPHIDelaware29 min
Aug 15, 8:36 PM EDTSpecial Weather StatementPHITalbot39 min
Aug 15, 10:44 PM EDTSpecial Weather StatementPHIQueen Anne's61 min
Aug 16, 5:37 PM EDTSevere Thunderstorm WarningPHICecil38 min

Nearby

Special Weather Statements in Maryland, 2016Every special weather statement in 2016

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.