Alert archive / Connecticut / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 9, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 19, 2017, 12:17 AM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 28 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
- May 19, 2017, 12:17 AM EDT (04:17 UTC)
- Expired
- May 19, 2017, 12:45 AM EDT
- In force
- 28 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 Boston radar (KBOX), 95 km from the middle of the area, began a volume at 04:17 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, 4.3 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
- 142 J/kg
- Mixed-layer CIN
- -377 J/kg
- Mixed-layer LCL
- 2073 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
211
WUUS51 KBOX 190417
SVRBOX
CTC003-013-015-190445-
/O.NEW.KBOX.SV.W.0009.170519T0417Z-170519T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Taunton MA
1217 AM EDT FRI MAY 19 2017
The National Weather Service in Taunton has issued a
* Severe Thunderstorm Warning for...
Windham County in northern Connecticut...
Tolland County in northern Connecticut...
East central Hartford County in northern Connecticut...
* Until 1245 AM EDT
* At 1216 AM EDT, a severe thunderstorm was located over Manchester,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Hartford, Manchester, East Hartford, Glastonbury, Vernon, Windsor,
Wethersfield, Mansfield, South Windsor, Windham, Plainfield, Rocky
Hill, Willimantic, Killingly, Ellington, Tolland, Coventry,
Stafford, Griswold and East Windsor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4189 7265 4199 7199 4167 7178 4165 7179
4163 7196 4166 7213 4166 7216 4171 7224
4169 7227 4167 7227 4164 7233 4162 7233
4162 7238 4169 7266
TIME...MOT...LOC 0416Z 264DEG 41KT 4178 7254
HAIL...<.75IN
WIND...60MPH
$$
LEC1 follow-up statement
602
WWUS51 KBOX 190427
SVSBOX
Severe Weather Statement
National Weather Service Taunton MA
1227 AM EDT FRI MAY 19 2017
CTC003-190436-
/O.CAN.KBOX.SV.W.0009.000000T0000Z-170519T0445Z/
Hartford CT-
1227 AM EDT FRI MAY 19 2017
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HARTFORD COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4189 7248 4199 7199 4168 7178 4165 7179
4163 7195 4166 7213 4166 7216 4171 7224
4169 7227 4167 7227 4164 7233 4162 7233
4162 7240 4168 7245 4181 7247 4181 7250
TIME...MOT...LOC 0426Z 264DEG 41KT 4179 7238
$$
CTC013-015-190445-
/O.CON.KBOX.SV.W.0009.000000T0000Z-170519T0445Z/
Windham CT-Tolland CT-
1227 AM EDT FRI MAY 19 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR WINDHAM AND TOLLAND COUNTIES...
At 1226 AM EDT, a severe thunderstorm was located over Coventry, or
near Vernon, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Vernon, Mansfield, Windham, Plainfield, Willimantic, Killingly,
Ellington, Tolland, Coventry, Griswold, Hebron, Putnam, Brooklyn,
Woodstock, Lebanon, Marlborough, Willington, Columbia, Canterbury and
Bolton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4189 7248 4199 7199 4168 7178 4165 7179
4163 7195 4166 7213 4166 7216 4171 7224
4169 7227 4167 7227 4164 7233 4162 7233
4162 7240 4168 7245 4181 7247 4181 7250
TIME...MOT...LOC 0426Z 264DEG 41KT 4179 7238
HAIL...<.75IN
WIND...60MPH
$$
SipprellThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 11:28 PM EDT | Special Weather Statement | BOX | 32 min | |
| May 18, 11:39 PM EDT | Special Weather Statement | BOX | 36 min | |
| May 18, 11:50 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 25 min |
| May 19, 12:04 AM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 27 min |
| May 19, 12:27 AM EDT | Special Weather Statement | BOX | 33 min | |
| May 19, 12:41 AM EDT | Special Weather Statement | BOX | 34 min | |
| May 19, 12:51 AM EDT | Special Weather Statement | BOX | 39 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.