Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 90, NWS Boston/Norton, MA

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

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 12, 2016, 3:22 PM EDT for Northeastern Connecticut Planning Region, Connecticut; Worcester County, Massachusetts; Providence County, Rhode Island. It was in force for 53 min. 1 report 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, 3:22 PM EDT (19:22 UTC)
Expired: Aug 12, 2016, 4:15 PM EDT
In force: 53 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Northeastern Connecticut Planning Region, CT, Worcester County, MA, Providence County, RI

The radar

The Boston radar (KBOX), 54 km from the middle of the area, began a volume at 19:24 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
Aug 12, 4:00 PM EDT	TSTM WND DMG	Sturbridge, MA	BOAT DOCK BLOWN OVER AND LARGE BRANCHES DOWN...SCREEN HOUSE DAMAGED ON LANE 8 NEAR SOUTH POND

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, 7.4 hours before the alert went out and 155 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: 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.

569 
WUUS51 KBOX 121922
SVRBOX
CTC015-MAC027-RIC007-122015-
/O.NEW.KBOX.SV.W.0090.160812T1922Z-160812T2015Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  NORTHWESTERN PROVIDENCE COUNTY IN RHODE ISLAND...

* UNTIL 415 PM EDT

* AT 322 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM OXFORD TO NEAR CHARLTON TO STURBRIDGE...MOVING
  SOUTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  WEBSTER...SOUTHBRIDGE...AUBURN...BURRILLVILLE...NORTHBRIDGE...
  OXFORD...UXBRIDGE...MILLBURY...CHARLTON...NORTH SMITHFIELD...
  DUDLEY...LEICESTER...GLOCESTER...PUTNAM...THOMPSON...STURBRIDGE...
  BLACKSTONE...SUTTON...DOUGLAS AND WOODSTOCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE THUNDERSTORM LINES CAN PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THESE STORMS MAY CAUSE SERIOUS INJURY
AND SIGNIFICANT PROPERTY DAMAGE.

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

&&

LAT...LON 4206 7149 4191 7168 4191 7204 4213 7207
      4220 7190
TIME...MOT...LOC 1922Z 301DEG 21KT 4213 7188 4211 7194 4211 7207 

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

SIPPRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 8:30 PM EDT	Special Weather Statement	BOX		45 min
Aug 11, 8:41 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	64 min
Aug 12, 2:22 PM EDT	Excessive Heat Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	5 hr
Aug 12, 4:14 PM EDT	Special Weather Statement	BOX		46 min
Aug 12, 4:28 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	47 min
Aug 12, 5:07 PM EDT	Special Weather Statement	BOX		53 min
Aug 12, 5:18 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	42 min
Aug 12, 5:43 PM EDT	Areal Flood Warning	BOX	Northeastern Connecticut Planning Region	2 hr
Aug 12, 5:51 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	54 min
Aug 12, 6:11 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	49 min
Aug 12, 6:15 PM EDT	Flash Flood Warning	BOX	Northeastern Connecticut Planning Region	3 hr
Aug 12, 7:06 PM EDT	Heat Advisory	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	24 hr
Aug 12, 1:54 PM EDT	Special Weather Statement	BOX	Hampden	51 min
Aug 12, 2:32 PM EDT	Special Weather Statement	BOX	Hampden, Hampshire	43 min
Aug 12, 2:39 PM EDT	Special Weather Statement	BOX	Worcester	51 min
Aug 12, 2:51 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	39 min
Aug 12, 2:57 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	26 min
Aug 12, 3:56 PM EDT	Special Weather Statement	BOX	Middlesex	49 min
Aug 12, 5:17 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	43 min
Aug 12, 5:33 PM EDT	Special Marine Warning	BOX		57 min
Aug 12, 6:01 PM EDT	Special Marine Warning	BOX		59 min
Aug 12, 4:58 PM EDT	Special Weather Statement	BOX	Providence	47 min
Aug 12, 5:27 PM EDT	Areal Flood Advisory	BOX	Kent, Providence	2 hr
Aug 12, 5:36 PM EDT	Special Weather Statement	BOX	Kent	39 min
Aug 12, 6:43 PM EDT	Special Weather Statement	BOX	Bristol, Kent	47 min
Aug 12, 7:01 PM EDT	Special Weather Statement	BOX	Kent, Newport	44 min

Nearby

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