Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 85, NWS Boston/Norton, MA

August 11, 2016Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 11, 2016, 4:41 PM EDT for Capitol Planning Region, Connecticut. It was in force for 49 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 11, 2016, 4:41 PM EDT (20:41 UTC)
Expired: Aug 11, 2016, 5:30 PM EDT
In force: 49 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 99 km from the middle of the area, began a volume at 20:43 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, 4:45 PM EDT	TSTM WND DMG	Manchester, CT	TREES AND WIRES DOWN ON SUMMIT STREET NEAR ROUTE 44

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, 8.7 hours before the alert went out and 99 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.

553 
WUUS51 KBOX 112041
SVRBOX
CTC003-013-112130-
/O.NEW.KBOX.SV.W.0085.160811T2041Z-160811T2130Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

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

* UNTIL 530 PM EDT

* AT 441 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR WETHERSFIELD TO GLASTONBURY TO NEAR ANDOVER...
  MOVING SOUTHEAST AT 20 MPH.

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

  SOURCE...RADAR INDICATED. 

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

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

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 4181 7229 4173 7219 4172 7225 4171 7224
      4169 7227 4167 7227 4164 7233 4161 7233
      4160 7234 4160 7238 4159 7239 4160 7241
      4158 7246 4165 7251 4164 7265 4177 7269
TIME...MOT...LOC 2041Z 319DEG 16KT 4173 7264 4171 7255 4174 7233 

HAIL...0.75IN
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, 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, 5:29 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	61 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.