Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 17, NWS Boston/Norton, MA

March 17, 20165 counties in Rhode Island; Bristol County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Mar 17, 2016, 5:45 PM EDT for 5 counties in Rhode Island; Bristol County, Massachusetts. It was in force for 30 min. 2 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: Mar 17, 2016, 5:45 PM EDT (21:45 UTC)
Expired: Mar 17, 2016, 6:15 PM EDT
In force: 30 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Bristol County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 31 km from the middle of the area, began a volume at 21:47 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

Time	Report	Where	Remark
Mar 17, 5:53 PM EDT	TSTM WND DMG	Johnston, RI	TREE DOWN ON WIRES ON SPRING ST.
Mar 17, 6:00 PM EDT	TSTM WND DMG	Warwick, RI	TREE AND POWER LINES DOWN ON WATERFRONT DRIVE

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, 9.8 hours before the alert went out and 110 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 615 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

004 
WUUS51 KBOX 172145
SVRBOX
MAC005-RIC001-003-005-007-009-172215-
/O.NEW.KBOX.SV.W.0017.160317T2145Z-160317T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
545 PM EDT THU MAR 17 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BRISTOL COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  BRISTOL COUNTY IN RHODE ISLAND...
  NORTHEASTERN NEWPORT COUNTY IN RHODE ISLAND...
  NORTHEASTERN KENT COUNTY IN RHODE ISLAND...
  NORTHEASTERN WASHINGTON COUNTY IN RHODE ISLAND...
  SOUTHEASTERN PROVIDENCE COUNTY IN RHODE ISLAND...

* UNTIL 615 PM EDT

* AT 544 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED OVER JOHNSTON...AND WAS MOVING EAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PROVIDENCE...NEW BEDFORD...FALL RIVER...WARWICK...CRANSTON...EAST
  PROVIDENCE...COVENTRY...DARTMOUTH...NORTH PROVIDENCE...WEST WARWICK...
  JOHNSTON...BRISTOL...SMITHFIELD...SOMERSET...PORTSMOUTH...BARRINGTON...
  SWANSEA...TIVERTON...WESTPORT AND SEEKONK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO
INDOORS AND STAY AWAY FROM WINDOWS.  DRIVERS SHOULD PREPARE FOR LOW
VISIBILITY AND AVOID FLOODED ROADS.

&&

LAT...LON 4163 7135 4166 7135 4164 7133 4171 7129
      4179 7137 4165 7136 4168 7139 4173 7169
      4190 7161 4178 7112 4175 7113 4178 7111
      4173 7093 4156 7105
TIME...MOT...LOC 2144Z 289DEG 56KT 4179 7155 

$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 1:42 PM EDT	Special Weather Statement	BOX	Bristol	33 min
Mar 17, 5:23 PM EDT	Special Weather Statement	BOX	Bristol, Kent, Newport, Providence, Washington	37 min
Mar 17, 6:34 PM EDT	Special Weather Statement	BOX	Newport, Washington	56 min
Mar 16, 8:53 PM EDT	Small Craft Advisory	BOX		20 hr
Mar 16, 8:53 PM EDT	Small Craft Advisory for Hazardous Seas	BOX		6 hr
Mar 16, 11:02 PM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	58 min
Mar 16, 11:47 PM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	43 min
Mar 17, 6:00 AM EDT	Dense Fog Advisory	BOX	Essex, Franklin, Hampden, Hampshire, Middlesex, Worcester	3 hr
Mar 17, 1:51 PM EDT	Special Weather Statement	BOX	Plymouth	24 min
Mar 17, 2:00 PM EDT	Special Weather Statement	BOX	Franklin	45 min
Mar 17, 3:15 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	45 min
Mar 17, 3:45 PM EDT	Special Weather Statement	BOX	Hampden	45 min
Mar 17, 4:12 PM EDT	Special Weather Statement	BOX	Worcester	48 min
Mar 17, 4:21 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Worcester	23 min
Mar 17, 4:30 PM EDT	Small Craft Advisory for Hazardous Seas	BOX		11 hr
Mar 17, 5:00 PM EDT	Special Marine Warning	BOX		60 min
Mar 17, 5:07 PM EDT	Special Weather Statement	BOX	Plymouth	38 min
Mar 17, 5:33 PM EDT	Special Marine Warning	BOX		57 min
Mar 17, 6:09 PM EDT	Special Weather Statement	BOX	Norfolk	51 min
Mar 17, 6:36 PM EDT	Special Marine Warning	BOX		54 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2016 Severe Thunderstorm Warnings in Massachusetts, 2016 Every 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.