Alert archive / Maryland / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 7, 2012Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2012, 7:40 PM EDT for Queen Anne's County, Maryland. It was in force for 50 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 7, 2012, 7:40 PM EDT (23:40 UTC)
Expired
Aug 7, 2012, 8:30 PM EDT
In force
50 min
Issued by
NWS Philadelphia/Mount Holly

County Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 50 km from the middle of the area, began a volume at 23:40 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.7 hours before the alert went out and 45 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-08-07Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2012-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1367 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
85 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.

970 
WWUS81 KPHI 072340
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
740 PM EDT TUE AUG 7 2012

MDZ015-020-080030-
CAROLINE MD-QUEEN ANNE'S MD-
740 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT CAROLINE AND QUEEN ANNE'S
COUNTIES...

AT 732 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
STRONG THUNDERSTORM NEAR HOPE...MOVING NORTHEAST AT 5 MPH. THE 
THUNDERSTORM WILL BE NEAR HOPE AROUND 745 PM...STARKEY CORNER AROUND 
815 PM...BARCLAY AND CHURCH HILL AROUND 830 PM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

FUNNEL CLOUDS WERE SIGHTED WITH THIS STORM. AT THIS TIME THE CIRCULATION
DOES NOT APPEAR STRONG ENOUGH ON DOPPLER RADAR TO PRODUCE A TORNADO.

WE WILL CONTINUE TO MONITOR AND ISSUE A TORNADO WARNING IF IT BECOMES
NECESSARY. 

IF YOU SEE THREATENING WEATHER OR A FUNNEL, PLEASE MOVE INDOORS AND
ON THE LOWER FLOOR.


LAT...LON 3924 7589 3911 7574 3904 7574 3894 7601
      3903 7610

$$
 
TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 1:19 PM EDTAreal Flood AdvisoryPHITalbot74 min
Aug 7, 2:40 PM EDTSpecial Weather StatementPHIQueen Anne's65 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.