Alert archive / Massachusetts / Wind Advisories in 2021
Wind Advisory 5, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this wind advisory at Feb 7, 2021, 3:17 AM EST for Nantucket County, Massachusetts. It took effect at Feb 7, 2021, 2:00 PM EST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Feb 7, 2021, 3:17 AM EST (08:17 UTC)
- In effect from
- Feb 7, 2021, 2:00 PM EST
- Expired
- Feb 7, 2021, 9:36 PM EST
- In force
- 8 hr
- Issued by
- NWS Boston/Norton, MA
County Nantucket County, MA
The radar
The Boston radar (KBOX), 120 km from the middle of the area, began a volume at 08:19 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
Chatham, MA (KCHH), launched 00:00Z, 8.3 hours before the alert went out and 45 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
- 1797 m above ground
- 0-6 km bulk shear
- 90 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
073 WWUS71 KBOX 070817 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 317 AM EST Sun Feb 7 2021 MAZ024-071630- /O.NEW.KBOX.WI.Y.0005.210207T1900Z-210208T0300Z/ Nantucket MA- Including the city of Nantucket 317 AM EST Sun Feb 7 2021 ...WIND ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM EST THIS EVENING... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Nantucket MA County. * WHEN...From 2 PM this afternoon to 10 PM EST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Frank For more information from the National Weather Service visit https://weather.gov/box
3 follow-up statements
320 WWUS71 KBOX 071611 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 1111 AM EST Sun Feb 7 2021 MAZ024-080015- /O.CON.KBOX.WI.Y.0005.210207T1900Z-210208T0300Z/ Nantucket MA- Including the city of Nantucket 1111 AM EST Sun Feb 7 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Nantucket MA County. * WHEN...From 2 PM this afternoon to 10 PM EST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/box
449 WWUS71 KBOX 072107 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 407 PM EST Sun Feb 7 2021 MAZ024-080300- /O.CON.KBOX.WI.Y.0005.000000T0000Z-210208T0300Z/ Nantucket MA- Including the city of Nantucket 407 PM EST Sun Feb 7 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING... * WHAT...North winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Nantucket MA County. * WHEN...From 2 PM this afternoon to 10 PM EST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/box
847 WWUS71 KBOX 080236 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 936 PM EST Sun Feb 7 2021 MAZ024-080345- /O.CAN.KBOX.WI.Y.0005.000000T0000Z-210208T0300Z/ Nantucket MA- Including the city of Nantucket 936 PM EST Sun Feb 7 2021 ...WIND ADVISORY IS CANCELLED... Northwest winds will continue to gust between 30 and 40 mph overnight. However, winds have dropped below advisory criteria and the Wind Advisory has been cancelled. $$ Frank 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 |
|---|---|---|---|---|
| Feb 7, 4:06 PM EST | Heavy Freezing Spray Advisory | BOX | 6 hr |
Nearby
Wind Advisories in Massachusetts, 2021Every wind advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.