Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 86, NWS Boston/Norton, MA

August 11, 2016Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 11, 2016, 5:29 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 61 min. 6 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 11, 2016, 5:29 PM EDT (21:29 UTC)
Expired: Aug 11, 2016, 6:30 PM EDT
In force: 61 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT

The radar

The Brookhaven radar (KOKX), 98 km from the middle of the area, began a volume at 21:30 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 11, 6:10 PM EDT	TSTM WND DMG	Glastonbury, CT	WIRES DOWN ON GLAZIER DRIVE
Aug 11, 6:11 PM EDT	TSTM WND DMG	Glastonbury, CT	TREES AND WIRES DOWN ON FARMCLIFF DRIVE
Aug 11, 6:31 PM EDT	TSTM WND DMG	Glastonbury, CT	MULTIPLE TREES AND WIRES DOWN ON JOHNNY CAKE LANE
Aug 11, 6:31 PM EDT	TSTM WND DMG	Glastonbury, CT	TWO UTILITY POLES DOWN ON STRICKLAND STREET
Aug 11, 6:32 PM EDT	TSTM WND DMG	South Glastonbury, CT	WIRES DOWN ON RUSSET ROAD AND CIDER MILL ROAD
Aug 11, 6:34 PM EDT	TSTM WND DMG	South Glastonbury, CT	TREES AND WIRES DOWN CLOSING THE ROAD ON NEW LONDON TURNPIKE AT CIDER MILL ROAD

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 98 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: 1804 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

776 
WUUS51 KBOX 112129
SVRBOX
CTC003-013-015-112230-
/O.NEW.KBOX.SV.W.0086.160811T2129Z-160811T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
529 PM EDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  SOUTHERN TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  SOUTHEASTERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 630 PM EDT

* AT 529 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  GLASTONBURY... MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TREES AND POWER LINES.

* LOCATIONS IMPACTED INCLUDE...
  MANCHESTER...EAST HARTFORD...GLASTONBURY...WETHERSFIELD...
  MANSFIELD...WINDHAM...ROCKY HILL...WILLIMANTIC...COVENTRY...
  HEBRON...MARLBOROUGH...COLUMBIA...CANTERBURY...BOLTON...ANDOVER...
  HAMPTON AND SCOTLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4178 7261 4174 7198 4164 7200 4166 7216
      4171 7224 4169 7227 4167 7227 4164 7233
      4161 7233 4159 7239 4160 7241 4159 7242
      4160 7248 4165 7251 4164 7265
TIME...MOT...LOC 2129Z 281DEG 25KT 4170 7254 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 1:47 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	58 min
Aug 11, 2:19 PM EDT	Severe Thunderstorm Warning	BOX		43 min
Aug 11, 3:44 PM EDT	Heat Advisory	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	27 hr
Aug 11, 3:59 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	46 min
Aug 11, 4:15 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	60 min
Aug 11, 4:22 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	38 min
Aug 11, 4:34 PM EDT	Areal Flood Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	116 min
Aug 11, 4:41 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	49 min
Aug 11, 5:51 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	114 min
Aug 11, 6:15 PM EDT	Flash Flood Warning	BOX	Capitol Planning Region	2 hr
Aug 11, 6:19 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	56 min

Nearby

Severe Thunderstorm Warnings in Connecticut, 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.