Alert archive / Connecticut / Tornado Warnings in 2021
Tornado Warning 14, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Sep 9, 2021, 3:50 AM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 25 min. 2 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
- Sep 9, 2021, 3:50 AM EDT (07:50 UTC)
- Expired
- Sep 9, 2021, 4:15 AM EDT
- In force
- 25 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT
The radar
The Brookhaven radar (KOKX), 104 km from the middle of the area, began a volume at 07:53 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 |
|---|---|---|---|
| Sep 9, 4:10 AM EDT | TSTM WND DMG | 2 Sse Coventry, CT | REPORT OF TREES AND WIRES DOWN ON FLANDERS ROAD. TIME ESTIMATED BY RADAR. |
| Sep 9, 4:10 AM EDT | TORNADO | 2 S Coventry, CT | EF-0 WITH MAX WINDS 75MPH. TOUCHED DOWN NEAR THE INTERSECTION OF SOUTH AND PUCKET STREETS, TRAVELED ENE AND CROSSED FLANDERS RD JUST NORTH OF NATHAN HALE DR. ON GROUND FOR ABOUT 90 SECONDS. PATH WAS NOT CONTINUOUS. DAMAGE WAS IN WOODED AREAS ON EITHER SIDE OF |
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 00:00Z, 7.8 hours before the alert went out and 104 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
- 619 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.4
The text
As transmitted.
245
WFUS51 KBOX 090750
TORBOX
CTC003-013-015-090815-
/O.NEW.KBOX.TO.W.0014.210909T0750Z-210909T0815Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
350 AM EDT Thu Sep 9 2021
The National Weather Service in Boston/Norton has issued a
* Tornado Warning for...
West central Windham County in northern Connecticut...
Central Tolland County in northern Connecticut...
East central Hartford County in northern Connecticut...
* Until 415 AM EDT.
* At 350 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Marlborough, or near Glastonbury, moving northeast
at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Bolton around 355 AM EDT.
Columbia around 405 AM EDT.
Vernon, Willimantic and Andover around 410 AM EDT.
Mansfield, Windham, Tolland and Coventry around 415 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4194 7232 4179 7211 4160 7245 4163 7250
4165 7251 4165 7252 4168 7257
TIME...MOT...LOC 0750Z 222DEG 25KT 4168 7246
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RM1 follow-up statement
119
WWUS51 KBOX 090759
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
359 AM EDT Thu Sep 9 2021
CTC003-013-015-090815-
/O.CON.KBOX.TO.W.0014.000000T0000Z-210909T0815Z/
Windham CT-Tolland CT-Hartford CT-
359 AM EDT Thu Sep 9 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM EDT FOR WESTERN
WINDHAM...CENTRAL TOLLAND AND EAST CENTRAL HARTFORD COUNTIES...
At 359 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Andover, or 7 miles southeast of Manchester, moving
northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Coventry around 415 AM EDT.
Mansfield around 420 AM EDT.
Tolland around 425 AM EDT.
Willington and Ashford around 430 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4191 7228 4180 7216 4168 7239 4173 7248
4192 7229
TIME...MOT...LOC 0759Z 222DEG 25KT 4173 7240
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RMThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 3:33 AM EDT | Special Weather Statement | BOX | 42 min | |
| Sep 9, 4:13 AM EDT | Tornado Warning | BOX | Northeastern Connecticut Planning Region | 11 min |
Nearby
Tornado Warnings in Connecticut, 2021Every tornado warning in 2021Tornadoes in 2021
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.