Alert archive / Massachusetts / High Wind Warnings in 2020
High Wind Warning 10, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this high wind warning at Dec 16, 2020, 9:31 AM EST for Dukes County, Nantucket County, Massachusetts; Washington County, Rhode Island. It took effect at Dec 16, 2020, 10:00 PM EST. It was in force for 12 hr. 9 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 16, 2020, 9:31 AM EST (14:31 UTC)
- In effect from
- Dec 16, 2020, 10:00 PM EST
- Expired
- Dec 17, 2020, 10:00 AM EST
- In force
- 12 hr
- Issued by
- NWS Boston/Norton, MA
Counties Dukes County, MA, Nantucket County, MA, Washington County, RI
The radar
The Boston radar (KBOX), 73 km from the middle of the area, began a volume at 14:33 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 |
|---|---|---|---|
| Dec 17, 12:00 AM EST | SNOW 4 | North Kingstown, RI | SPOTTER ID: 10-400 |
| Dec 17, 1:44 AM EST | SNOW 7 | Westerly, RI | |
| Dec 17, 2:41 AM EST | SNOW 8 | Westerly, RI | |
| Dec 17, 5:47 AM EST | SNOW 3.5 | Nantucket, MA | |
| Dec 17, 5:48 AM EST | SNOW 3 | Nantucket, MA | |
| Dec 17, 6:12 AM EST | SNOW 2.5 | West Tisbury, MA | |
| Dec 17, 6:53 AM EST | NON-TSTM WND GST 60 | Nantucket Ap, MA | |
| Dec 17, 7:49 AM EST | SNOW 7.6 | Westerly, RI | |
| Dec 17, 9:58 AM EST | SNOW 10.5 | Hope Valley, RI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 2.5 hours before the alert went out and 76 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 876 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
054 WWUS71 KBOX 161431 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 931 AM EST Wed Dec 16 2020 MAZ023-024-RIZ008-162245- /O.NEW.KBOX.HW.W.0010.201217T0300Z-201217T1500Z/ Dukes MA-Nantucket MA-Block Island RI- Including the cities of Vineyard Haven, Nantucket, and New Shoreham 931 AM EST Wed Dec 16 2020 ...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM EST THURSDAY... * WHAT...Northeast winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...In Massachusetts, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI County. * WHEN...From 10 PM this evening to 10 AM EST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/box
3 follow-up statements
706 WWUS71 KBOX 161948 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 248 PM EST Wed Dec 16 2020 MAZ023-024-RIZ008-170400- /O.CON.KBOX.HW.W.0010.201217T0300Z-201217T1500Z/ Dukes MA-Nantucket MA-Block Island RI- Including the cities of Vineyard Haven, Nantucket, and New Shoreham 248 PM EST Wed Dec 16 2020 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM EST THURSDAY... * WHAT...Northeast winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...In Massachusetts, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI County. * WHEN...From 10 PM this evening to 10 AM EST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/box
901 WWUS71 KBOX 170403 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 1103 PM EST Wed Dec 16 2020 MAZ023-024-RIZ008-171215- /O.CON.KBOX.HW.W.0010.000000T0000Z-201217T1500Z/ Dukes MA-Nantucket MA-Block Island RI- Including the cities of Vineyard Haven, Nantucket, and New Shoreham 1103 PM EST Wed Dec 16 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM EST THURSDAY... * WHAT...Northeast winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...In Massachusetts, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI County. * WHEN...From 10 PM this evening to 10 AM EST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/box
018 WWUS71 KBOX 170854 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 354 AM EST Thu Dec 17 2020 MAZ023-024-RIZ008-171500- /O.CON.KBOX.HW.W.0010.000000T0000Z-201217T1500Z/ Dukes MA-Nantucket MA-Block Island RI- Including the cities of Vineyard Haven, Nantucket, and New Shoreham 354 AM EST Thu Dec 17 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Northeast winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...In Massachusetts, Dukes MA and Nantucket MA Counties. In Rhode Island, Block Island RI County. * WHEN...From 10 PM this evening to 10 AM EST Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/box
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 3:39 AM EST | Winter Weather Advisory | BOX | Barnstable, Dukes | 33 hr |
| Dec 16, 9:32 AM EST | Storm Warning | BOX | 26 hr |
Nearby
High Wind Warnings in Massachusetts, 2020High Wind Warnings in Rhode Island, 2020Every high wind warning in 2020
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.