Alert archive / Connecticut / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 75, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 5, 2017, 8:31 PM EDT for Capitol Planning Region, Connecticut. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2017, 8:31 PM EDT (00:31 UTC)
- Expired
- Sep 5, 2017, 9:15 PM EDT
- In force
- 44 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), 108 km from the middle of the area, began a volume at 00:35 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.5 hours before the alert went out and 108 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.
- Mixed-layer CAPE
- 136 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 1108 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
269 WUUS51 KBOX 060031 SVRBOX CTC003-013-060115- /O.NEW.KBOX.SV.W.0075.170906T0031Z-170906T0115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Taunton MA 831 PM EDT TUE SEP 5 2017 The National Weather Service in Taunton has issued a * Severe Thunderstorm Warning for... Northwestern Tolland County in northern Connecticut... Central Hartford County in northern Connecticut... * Until 915 PM EDT * At 829 PM EDT, a severe thunderstorm was located over Farmington, moving northeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. * Locations impacted include... Hartford, New Britain, West Hartford, Bristol, Manchester, East Hartford, Enfield, Southington, Glastonbury, Newington, Vernon, Windsor, Wethersfield, South Windsor, Farmington, Simsbury, Bloomfield, Berlin, Rocky Hill and Avon. 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 4200 7244 4173 7228 4159 7286 4177 7294 TIME...MOT...LOC 0029Z 245DEG 34KT 4173 7280 HAIL...0.75IN WIND...60MPH $$ DUNTEN
2 follow-up statements
365 WWUS51 KBOX 060057 SVSBOX Severe Weather Statement National Weather Service Taunton MA 857 PM EDT TUE SEP 5 2017 CTC003-013-060115- /O.CON.KBOX.SV.W.0075.000000T0000Z-170906T0115Z/ Tolland CT-Hartford CT- 857 PM EDT TUE SEP 5 2017 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR NORTHWESTERN TOLLAND AND EAST CENTRAL HARTFORD COUNTIES... At 856 PM EDT, a severe thunderstorm was located over Vernon, moving northeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Manchester, Vernon, South Windsor, Ellington, Tolland, Coventry, Somers, East Windsor and Bolton. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Taunton. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4180 7232 4175 7256 4187 7261 4200 7244 TIME...MOT...LOC 0056Z 245DEG 34KT 4184 7249 HAIL...<.75IN WIND...60MPH $$ DUNTEN
781
WWUS51 KBOX 060108
SVSBOX
Severe Weather Statement
National Weather Service Taunton MA
908 PM EDT TUE SEP 5 2017
CTC003-013-060117-
/O.EXP.KBOX.SV.W.0075.000000T0000Z-170906T0115Z/
Tolland CT-Hartford CT-
908 PM EDT TUE SEP 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TOLLAND AND EAST
CENTRAL HARTFORD COUNTIES WILL EXPIRE AT 915 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However heavy rain is still possible with this
thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Taunton.
LAT...LON 4180 7232 4175 7256 4187 7261 4200 7244
TIME...MOT...LOC 0107Z 245DEG 34KT 4188 7237
$$
DUNTENThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 10:04 AM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 41 min |
Nearby
Severe Thunderstorm Warnings in Connecticut, 2017Every severe thunderstorm warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.