Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 84, NWS Boston/Norton, MA

August 11, 2016Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 11, 2016, 4:22 PM EDT for Capitol Planning Region, Connecticut. It was in force for 38 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, 4:22 PM EDT (20:22 UTC)
Expired: Aug 11, 2016, 5:00 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 103 km from the middle of the area, began a volume at 20:25 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
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, 8.4 hours before the alert went out and 103 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.

048 
WUUS51 KBOX 112022
SVRBOX
CTC003-013-112100-
/O.NEW.KBOX.SV.W.0084.160811T2022Z-160811T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
422 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...
  EAST CENTRAL HARTFORD COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 500 PM EDT

* AT 422 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  MANCHESTER...MOVING SOUTHEAST AT 15 MPH.

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

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  MANCHESTER...EAST HARTFORD...GLASTONBURY...VERNON...MANSFIELD...
  SOUTH WINDSOR...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 THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4177 7263 4185 7256 4177 7219 4163 7242
      4170 7258
TIME...MOT...LOC 2022Z 297DEG 11KT 4177 7255 

HAIL...0.88IN
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, 4:34 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, 5:29 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.