Alert archive / Maryland / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 14, 2012Kent County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 14, 2012, 10:37 PM EDT for Kent 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 14, 2012, 10:37 PM EDT (02:37 UTC)
Expired
Aug 14, 2012, 11:30 PM EDT
In force
53 min
Issued by
NWS Philadelphia/Mount Holly

County Kent County, MD

The radar

The Dover AFB radar (KDOX), 87 km from the middle of the area, began a volume at 02:40 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.6 hours before the alert went out and 124 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, Washington/Dulle, VA at 00:00Z on 2012-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 833 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2012-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.19395878Sfc1 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
833 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1690 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
59 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.

833 
WWUS81 KPHI 150237
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1037 PM EDT TUE AUG 14 2012

MDZ008-012-015-150330-
CECIL MD-KENT MD-QUEEN ANNE'S MD-
1037 PM EDT TUE AUG 14 2012

...STRONG THUNDERSTORMS WILL AFFECT CECIL...KENT AND QUEEN ANNE'S
COUNTIES...

AT 1033 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STRONG THUNDERSTORMS NORTHEAST OF BALTIMORE...MOVING EAST AT 20 MPH. 
THE THUNDERSTORMS WILL BE NEAR NEWTOWN...LANGFORD AROUND 1100 
PM...OCTORARO...CONOWINGO AROUND 1115 PM...WOODLAWN AND WOODLAWN 
AROUND 1130 PM.

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

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.

EXPECT SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING.

LAT...LON 3927 7623 3930 7619 3932 7619 3938 7611
      3938 7606 3942 7601 3946 7602 3952 7599
      3954 7607 3956 7610 3958 7608 3970 7621
      3970 7604 3918 7578 3918 7627

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 1:57 AM EDTSpecial Weather StatementPHIHunterdon, Somerset63 min
Aug 15, 2:00 AM EDTSpecial Weather StatementPHIWarren90 min
Aug 15, 2:13 AM EDTSpecial Weather StatementPHISussex62 min
Aug 15, 3:10 AM EDTAreal Flood AdvisoryPHISussex111 min
Aug 15, 3:22 AM EDTSpecial Weather StatementPHISussex53 min
Aug 15, 2:38 PM EDTSpecial Weather StatementPHIMonmouth52 min
Aug 15, 2:53 PM EDTSevere Thunderstorm WarningPHIMonmouth52 min
Aug 15, 2:58 PM EDTSpecial Weather StatementPHIAtlantic62 min
Aug 15, 3:17 PM EDTSpecial Marine WarningPHI43 min
Aug 15, 3:23 PM EDTSpecial Weather StatementPHISussex52 min
Aug 15, 3:25 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex65 min
Aug 15, 4:14 PM EDTAreal Flood WarningPHIMonmouth3 hr
Aug 15, 4:24 PM EDTSpecial Weather StatementPHIAtlantic66 min
Aug 15, 4:33 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren87 min
Aug 15, 4:45 PM EDTSpecial Weather StatementPHIOcean90 min
Aug 15, 5:22 PM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth38 min
Aug 15, 5:28 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean34 min
Aug 15, 5:48 PM EDTSpecial Weather StatementPHIMiddlesex57 min
Aug 15, 5:58 PM EDTSpecial Weather StatementPHIMercer62 min
Aug 15, 6:06 PM EDTSpecial Weather StatementPHIMonmouth84 min
Aug 15, 6:19 PM EDTAreal Flood WarningPHIMercer, Middlesex, Monmouth, Ocean118 min
Aug 15, 6:50 PM EDTAreal Flood WarningPHIMorris87 min
Aug 15, 6:58 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland, Gloucester62 min
Aug 14, 11:10 PM EDTSpecial Weather StatementPHIBerks80 min
Aug 14, 11:40 PM EDTSpecial Weather StatementPHIBerks, Chester95 min
Aug 15, 12:28 AM EDTSpecial Weather StatementPHIBerks, Lehigh, Montgomery92 min
Aug 15, 12:49 AM EDTAreal Flood AdvisoryPHIBerks, Chester, Lehigh, Montgomery3 hr
Aug 15, 1:26 AM EDTSpecial Weather StatementPHIBucks, Montgomery94 min
Aug 15, 1:28 AM EDTSpecial Weather StatementPHICarbon, Monroe62 min
Aug 15, 1:48 AM EDTAreal Flood AdvisoryPHIBucks, Montgomery85 min
Aug 15, 6:55 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot49 min
Aug 15, 7:16 PM EDTSevere Thunderstorm WarningPHIQueen Anne's, Talbot35 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.