Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 41, NWS Boston/Norton, MA

July 18, 2016Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 18, 2016, 3:22 PM EDT for Capitol Planning Region, Connecticut. It was in force for 38 min. 4 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: Jul 18, 2016, 3:22 PM EDT (19:22 UTC)
Expired: Jul 18, 2016, 4:00 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 96 km from the middle of the area, began a volume at 19:25 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
Jul 18, 3:30 PM EDT	TSTM WND DMG	Bristol, CT	TREE DOWN ON WOODLAND STREET.
Jul 18, 3:30 PM EDT	TSTM WND DMG	Bristol, CT	TREES...WIRES AND UTILITY POLES DOWN ON FAIR STREET. PRIMARY WIRES DOWN ON SUMMER STREET.
Jul 18, 3:30 PM EDT	TSTM WND DMG	Farmington, CT	TREE DOWN ON NEW BRITAIN AVENUE.
Jul 18, 3:55 PM EDT	TSTM WND DMG	Wethersfield, CT	TREES AND WIRES DOWN ON BROAD STREET IN OLD WETHERSFIELD SECTION.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 18, 12:05 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 96 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: 1 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1554 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

592 
WUUS51 KBOX 181922
SVRBOX
CTC003-182000-
/O.NEW.KBOX.SV.W.0041.160718T1922Z-160718T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
322 PM EDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL HARTFORD COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 400 PM EDT

* AT 322 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BRISTOL...
  MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  HARTFORD...NEW BRITAIN...WEST HARTFORD...BRISTOL...MANCHESTER...
  EAST HARTFORD...SOUTHINGTON...GLASTONBURY...NEWINGTON...WINDSOR...
  WETHERSFIELD...SOUTH WINDSOR...FARMINGTON...SIMSBURY...
  BLOOMFIELD...BERLIN...ROCKY HILL...AVON...
  PLAINVILLE AND WINDSOR LOCKS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4191 7262 4165 7252 4163 7294 4164 7294
      4164 7299 4173 7300 4174 7300
TIME...MOT...LOC 1922Z 253DEG 25KT 4170 7296 

HAIL...1.00IN
WIND...60MPH
 
$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 2:41 PM EDT	Special Weather Statement	BOX		49 min
Jul 18, 3:14 PM EDT	Special Weather Statement	BOX		46 min
Jul 18, 3:56 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	64 min
Jul 18, 4:42 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	18 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.