Relative Velocity mode of doppler radar just before the tornado warning was issued at 11:23 AM. The red and green next to each other indicate winds blowing in opposite directions-i.e. rotation
Severe Weather Statement
National Weather Service Boston/Norton MA
1209 PM EST Mon Nov 23 2020
…A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM EST FOR NORTHEASTERN BARNSTABLE COUNTY…
At 1207 PM EST, a severe thunderstorm was located near Eastham, or 8 miles north of Brewster, moving northeast at 60 mph.
HAZARD…60 mph wind gusts.
SOURCE…Radar indicated. At 12 PM a weatherflow mesonet weather station in West Dennis on Cape Cod reported a wind gusts to 61 mph!
IMPACT…Expect damage to trees and power lines.
Locations impacted include…
Brewster, Harwich, Orleans, Eastham, Wellfleet and Truro.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
For your protection move to an interior room on the lowest floor of a building.
Severe Thunderstorm Warning
BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
1158 AM EST Mon Nov 23 2020
The National Weather Service in Boston/Norton has issued a
* Severe Thunderstorm Warning for…
Northeastern Barnstable County in southeastern Massachusetts…
* Until 1230 PM EST.
* At 1157 AM EST, a severe thunderstorm was located over Dennis, or near Brewster, moving northeast at 60 mph.
HAZARD…60 mph wind gusts.
SOURCE…Radar indicated.
IMPACT…Expect damage to trees and power lines.
* Locations impacted include…
Barnstable, Brewster, Yarmouth, Dennis, Harwich, Orleans, Eastham, Wellfleet and Truro.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
For your protection move to an interior room on the lowest floor of a building.
Tornado Warning
Severe Weather Statement
National Weather Service Boston/Norton MA
1140 AM EST Mon Nov 23 2020
…A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON EST FOR EAST CENTRAL DUKES AND SOUTHEASTERN BARNSTABLE COUNTIES…
At 1136 AM EST, a severe thunderstorm capable of producing a tornado was located 8 miles south of Barnstable, moving northeast at 50 mph.
HAZARD…Tornado.
SOURCE…Radar indicated rotation. At 1132 AM in Edgartown MA on Marthas Vineyard a gusts to 45 mph was reported by Skywarn spotter.
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…
Yarmouth around 1140 AM EST.
Dennis and Harwich around 1145 AM EST.
Brewster around 1150 AM EST.
Other locations impacted by this tornadic thunderstorm include Hyannis.
Tornado Warning
BULLETIN – EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
1123 AM EST Mon Nov 23 2020
The National Weather Service in Boston/Norton has issued a
* Tornado Warning for…
Northeastern Dukes County in southeastern Massachusetts…
Southeastern Barnstable County in southeastern Massachusetts…
* Until noon EST.
* At 1122 AM EST, a severe thunderstorm capable of producing a tornado was located near Edgartown, moving northeast at 50 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…
Yarmouth and Dennis around 1145 AM EST.
Brewster and Harwich around 1150 AM EST.
Other locations impacted by this tornadic thunderstorm include Hyannis.
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.
