Alert archive / Rhode Island / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

August 5, 2012Bristol County, Kent County, Rhode Island

NWS Boston/Norton, MA issued this special weather statement at Aug 5, 2012, 9:50 PM EDT for Bristol County, Kent County, Rhode Island. It was in force for 55 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 5, 2012, 9:50 PM EDT (01:50 UTC)
Expired
Aug 5, 2012, 10:45 PM EDT
In force
55 min
Issued by
NWS Boston/Norton, MA

Counties Bristol County, RI, Kent County, RI

The radar

The Boston radar (KBOX), 47 km from the middle of the area, began a volume at 01:51 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, 1.8 hours before the alert went out and 126 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 2012-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 435 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, Chatham, MA at 00:00Z on 2012-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 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
435 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

544 
WWUS81 KBOX 060150
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
950 PM EDT SUN AUG 5 2012

CTZ004-MAZ017-020-RIZ001>007-060245-
BRISTOL RI-EASTERN KENT RI-NEWPORT RI-NORTHERN BRISTOL MA-NORTHWEST
PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-SOUTHERN BRISTOL MA-WASHINGTON
RI-WESTERN KENT RI-WINDHAM CT-
950 PM EDT SUN AUG 5 2012

AT 943 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF STRONG THUNDERSTORM. THESE THUNDERSTORMS WERE CAPABLE OF 
PRODUCING WIND GUSTS TO 40 MPH...AS WELL AS LOCALLY HEAVY DOWNPOURS. 
THE STORMS WERE ALONG A LINE EXTENDING FROM 4 MILES SOUTH OF 
PLAINFIELD OLD SAYBROOK...MOVING EAST AT 40 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...STERLING...COVENTRY...EXETER...
  WEST GREENWICH...SCITUATE...WEST WARWICK...CRANSTON...JOHNSTON...
  EAST GREENWICH...NORTH PROVIDENCE...PROVIDENCE...WARWICK...
  HOPKINTON...EAST PROVIDENCE...CENTRAL FALLS...PAWTUCKET...
  SEEKONK...BARRINGTON...REHOBOTH...RICHMOND...WARREN...BRISTOL...
  PRUDENCE ISLAND AND NORTH KINGSTOWN.

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

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 4139 7184 4163 7179 4164 7203 4174 7201
      4196 7112 4170 7120 4163 7128 4174 7137
      4167 7137 4163 7130 4158 7134 4159 7134
      4162 7134 4168 7144 4163 7139 4157 7143
      4156 7136 4149 7144

$$

WTB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 8:08 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire41 min
Aug 5, 8:18 PM EDTAreal Flood AdvisoryBOXHampden, Hampshire117 min
Aug 6, 12:24 AM EDTSmall Craft AdvisoryBOX7 hr
Aug 6, 7:11 AM EDTSmall Craft Advisory for Hazardous SeasBOX9 hr
Aug 5, 8:13 PM EDTSpecial Weather StatementBOX62 min
Aug 5, 9:12 PM EDTSpecial Weather StatementBOXCheshire63 min
Aug 5, 10:00 PM EDTSpecial Weather StatementBOXHillsborough30 min

Nearby

Special Weather Statements in Rhode Island, 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.