Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 93, NWS Boston/Norton, MA

August 12, 2016Northeastern Connecticut Planning Region, Connecticut; Bristol County, Massachusetts; Bristol County, Kent County, Providence County, Rhode Island

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 12, 2016, 5:18 PM EDT for Northeastern Connecticut Planning Region, Connecticut; Bristol County, Massachusetts; Bristol County, Kent County, Providence County, Rhode Island. It was in force for 42 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 12, 2016, 5:18 PM EDT (21:18 UTC)
Expired
Aug 12, 2016, 6:00 PM EDT
In force
42 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Northeastern Connecticut Planning Region, CT, Bristol County, MA, Bristol County, RI, Kent County, RI, Providence County, RI

The radar

The Boston radar (KBOX), 30 km from the middle of the area, began a volume at 21:17 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.

What was reported inside it

TimeReportWhereRemark
Aug 12, 5:27 PM EDTTSTM WND DMGNorth Providence, RITREE AND WIRES DOWN ON CLARK STREET
Aug 12, 5:28 PM EDTTSTM WND DMGScituate, RITREE DOWN ON WIRES ON HILL ROAD...WIRES BLOCKING ROAD
Aug 12, 5:47 PM EDTTSTM WND DMGScituate, RITREE DOWN BLOCKING ROUTE 101

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 9.3 hours before the alert went out and 118 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 12:00Z on 2016-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 383 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, Chatham, MA at 12:00Z on 2016-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
383 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

700 
WUUS51 KBOX 122118
SVRBOX
CTC015-MAC005-RIC001-003-007-122200-
/O.NEW.KBOX.SV.W.0093.160812T2118Z-160812T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
518 PM EDT FRI AUG 12 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  WEST CENTRAL BRISTOL COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  NORTHERN BRISTOL COUNTY IN RHODE ISLAND...
  CENTRAL KENT COUNTY IN RHODE ISLAND...
  PROVIDENCE COUNTY IN RHODE ISLAND...

* UNTIL 600 PM EDT

* AT 518 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM POMFRET TO NEAR KILLINGLY TO NEAR SMITHFIELD TO
  CENTRAL FALLS...MOVING SOUTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  PROVIDENCE...FALL RIVER...WARWICK...CRANSTON...PAWTUCKET...
  TAUNTON...EAST PROVIDENCE...COVENTRY...CUMBERLAND...
  NORTH PROVIDENCE...WEST WARWICK...JOHNSTON...NORTH ATTLEBOROUGH...
  BRISTOL...PLAINFIELD...ATTLEBORO...SMITHFIELD...LINCOLN...
  CENTRAL FALLS AND SOMERSET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4164 7203 4188 7217 4189 7165 4196 7140
      4184 7101 4182 7103 4179 7102 4174 7113
      4176 7113 4179 7112 4172 7118 4171 7121
      4173 7122 4171 7124 4173 7126 4171 7125
      4170 7129 4179 7137 4168 7137 4163 7196
TIME...MOT...LOC 2118Z 298DEG 22KT 4185 7199 4184 7179 4186 7157 4191
7141

HAIL...<.75IN
WIND...60MPH
 
$$

SIPPRELL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 8:30 PM EDTSpecial Weather StatementBOX45 min
Aug 11, 8:41 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region64 min
Aug 12, 2:22 PM EDTExcessive Heat WarningBOXCapitol Planning Region, Northeastern Connecticut Planning Region5 hr
Aug 12, 3:22 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region53 min
Aug 12, 4:14 PM EDTSpecial Weather StatementBOX46 min
Aug 12, 4:28 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region47 min
Aug 12, 5:07 PM EDTSpecial Weather StatementBOX53 min
Aug 12, 5:43 PM EDTAreal Flood WarningBOXNortheastern Connecticut Planning Region2 hr
Aug 12, 5:51 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region54 min
Aug 12, 6:11 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region49 min
Aug 12, 6:15 PM EDTFlash Flood WarningBOXNortheastern Connecticut Planning Region3 hr
Aug 12, 7:06 PM EDTHeat AdvisoryBOXCapitol Planning Region, Northeastern Connecticut Planning Region24 hr
Aug 12, 1:54 PM EDTSpecial Weather StatementBOXHampden51 min
Aug 12, 2:32 PM EDTSpecial Weather StatementBOXHampden, Hampshire43 min
Aug 12, 2:39 PM EDTSpecial Weather StatementBOXWorcester51 min
Aug 12, 2:51 PM EDTSevere Thunderstorm WarningBOXHampden, Worcester39 min
Aug 12, 2:57 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire26 min
Aug 12, 3:56 PM EDTSpecial Weather StatementBOXMiddlesex49 min
Aug 12, 5:17 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire43 min
Aug 12, 5:33 PM EDTSpecial Marine WarningBOX57 min
Aug 12, 6:01 PM EDTSpecial Marine WarningBOX59 min
Aug 12, 4:58 PM EDTSpecial Weather StatementBOXProvidence47 min
Aug 12, 5:27 PM EDTAreal Flood AdvisoryBOXKent, Providence2 hr
Aug 12, 5:36 PM EDTSpecial Weather StatementBOXKent39 min
Aug 12, 6:43 PM EDTSpecial Weather StatementBOXBristol, Kent47 min
Aug 12, 7:01 PM EDTSpecial Weather StatementBOXKent, Newport44 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2016Severe Thunderstorm Warnings in Connecticut, 2016Severe Thunderstorm Warnings in Massachusetts, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.