Alert archive / Massachusetts / Special Weather Statements in 2011

Special Weather Statement, NWS Boston/Norton, MA

December 28, 2011Barnstable County, Dukes County, Nantucket County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Dec 28, 2011, 12:21 AM EST for Barnstable County, Dukes County, Nantucket County, Massachusetts. It was in force for 54 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
Dec 28, 2011, 12:21 AM EST (05:21 UTC)
Expired
Dec 28, 2011, 1:15 AM EST
In force
54 min
Issued by
NWS Boston/Norton, MA

Counties Barnstable County, MA, Dukes County, MA, Nantucket County, MA

The radar

The Boston radar (KBOX), 81 km from the middle of the area, began a volume at 05:25 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

Chatham, MA (KCHH), launched 00:00Z, 5.4 hours before the alert went out and 38 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, Chatham, MA at 00:00Z on 2011-12-28Temperature 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 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2011-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 square meters per square second.1939587897Sfc1 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
802 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
392 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.

534 
WWUS81 KBOX 280521
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1221 AM EST WED DEC 28 2011

MAZ022>024-280615-
BARNSTABLE MA-DUKES MA-NANTUCKET MA-
1221 AM EST WED DEC 28 2011

AT 1220 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF STRONG GUSTY RAIN SQUALLS CAPABLE OF PRODUCING WIND GUSTS 
TO 55 MPH ALONG A LINE EXTENDING FROM 2 MILES WEST OF FALMOUTH TO 36 
MILES SOUTHWEST OF VINEYARD HAVEN...MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...FALMOUTH...WEST TISBURY...
  TISBURY...VINEYARD HAVEN...MASHPEE...OAK BLUFFS...EDGARTOWN...
  BARNSTABLE...HYANNIS...YARMOUTH...DENNIS...TRURO...NANTUCKET...
  WELLFLEET...ORLEANS...HARWICH...EASTHAM...CHATHAM AND BREWSTER.

FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.

BRIEF HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF 
WATER IN LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH 
FLOODED ROADS.

&&

LAT...LON 4173 6991 4203 7003 4180 7002 4176 7043
      4161 7064 4124 7082 4133 7073 4135 7044
      4147 7066 4153 7063 4155 7047 4132 7029
      4159 7044 4166 7000 4165 6998 4133 7004
      4132 7029 4124 7013 4128 7003

$$

NOCERA

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 27, 7:33 PM ESTCoastal Flood StatementBOXBarnstable, Bristol, Plymouth4 hr
Dec 28, 12:25 AM ESTSpecial Marine WarningBOX65 min
Dec 28, 1:13 AM ESTSpecial Weather StatementBOXBarnstable32 min
Dec 28, 1:24 AM ESTSpecial Marine WarningBOX66 min
Dec 27, 11:15 PM ESTSpecial Weather StatementBOXProvidence60 min

Nearby

Special Weather Statements in Massachusetts, 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.