Alert archive / Maryland / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

June 5, 2011Cecil County, Maryland

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 5, 2011, 9:08 PM EDT for Cecil County, Maryland. It was in force for 67 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
Jun 5, 2011, 9:08 PM EDT (01:08 UTC)
Expired
Jun 5, 2011, 10:15 PM EDT
In force
67 min
Issued by
NWS Philadelphia/Mount Holly

County Cecil County, MD

The radar

The Dover AFB radar (KDOX), 120 km from the middle of the area, began a volume at 01:07 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, 1.1 hours before the alert went out and 150 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 2011-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 2011-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
10 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
1814 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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.

168 
WWUS81 KPHI 060108
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
908 PM EDT SUN JUN 5 2011

MDZ008-PAZ067-060215-
CECIL MD-CHESTER PA-
908 PM EDT SUN JUN 5 2011

...A STRONG THUNDERSTORM WILL AFFECT CECIL AND CHESTER COUNTIES...

AT 905 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES NORTHEAST OF LANCASTER...MOVING SOUTH AT
30 MPH. THE THUNDERSTORM WILL BE NEAR ATGLEN AROUND 945 PM...MOUNT
VERNON...GLEN ROY AROUND 1000 PM...CALVERT AND FARMINGTON AROUND 1015
PM.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

LAT...LON 3974 7613 3978 7607 3985 7603 3987 7601
      3992 7601 3993 7600 3996 7600 4000 7598
      3966 7581 3959 7613 3961 7615 3973 7618

$$

HAYES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 1:46 PM EDTExcessive Heat WatchPHIBurlington, Camden, Gloucester, Mercer25 hr
Jun 5, 8:06 PM EDTSevere Thunderstorm WarningPHIBerks39 min
Jun 5, 8:16 PM EDTSpecial Weather StatementPHICarbon, Lehigh, Northampton59 min
Jun 5, 10:06 PM EDTSpecial Weather StatementPHICecil, Kent54 min
Jun 5, 11:14 PM EDTSpecial Weather StatementPHIKent, Queen Anne's61 min

Nearby

Special Weather Statements in Maryland, 2011Every special weather statement in 2011

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.