Alert archive / Rhode Island / Freeze Warnings in 2021
Freeze Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this freeze warning at Apr 22, 2021, 4:08 PM EDT for Kent County, Providence County, Washington County, Rhode Island; Bristol County, Norfolk County, Plymouth County, Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Apr 22, 2021, 11:00 PM EDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2021, 4:08 PM EDT (20:08 UTC)
- In effect from
- Apr 22, 2021, 11:00 PM EDT
- Expired
- Apr 23, 2021, 3:53 AM EDT
- In force
- 5 hr
- Issued by
- NWS Boston/Norton, MA
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Bristol County, MA, Norfolk County, MA, Plymouth County, MA, Kent County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 20:10 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 12:00Z, 8.1 hours before the alert went out and 153 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
- 1248 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
135 WWUS71 KBOX 222008 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 408 PM EDT Thu Apr 22 2021 MAZ013-017-018-230915- /O.UPG.KBOX.FZ.A.0001.210423T0200Z-210423T1000Z/ /O.NEW.KBOX.FZ.W.0002.210423T0300Z-210423T1200Z/ Western Norfolk MA-Northern Bristol MA-Western Plymouth MA- Including the cities of Foxborough, Norwood, Taunton, and Brockton 408 PM EDT Thu Apr 22 2021 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Western Norfolk MA, Northern Bristol MA and Western Plymouth MA Counties. * WHEN...From 11 PM this evening to 8 AM EDT Friday. * IMPACTS...Freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ CTZ002>004-RIZ001-003-006-230915- /O.NEW.KBOX.FZ.W.0002.210423T0300Z-210423T1200Z/ Hartford CT-Tolland CT-Windham CT-Northwest Providence RI- Western Kent RI-Washington RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Foster, Smithfield, Coventry, West Greenwich, Narragansett, and Westerly 408 PM EDT Thu Apr 22 2021 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In Connecticut, Hartford CT, Tolland CT and Windham CT Counties. In Rhode Island, Northwest Providence RI, Western Kent RI and Washington RI Counties. * WHEN...From 11 PM this evening to 8 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ For more information from the National Weather Service visit https://weather.gov/box
1 follow-up statement
627 WWUS71 KBOX 230753 NPWBOX URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 353 AM EDT Fri Apr 23 2021 CTZ002>004-MAZ013-017-018-RIZ001-003-006-230900- /O.CAN.KBOX.FZ.W.0002.000000T0000Z-210423T1200Z/ Hartford CT-Tolland CT-Windham CT-Western Norfolk MA- Northern Bristol MA-Western Plymouth MA-Northwest Providence RI- Western Kent RI-Washington RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Foxborough, Norwood, Taunton, Brockton, Foster, Smithfield, Coventry, West Greenwich, Narragansett, and Westerly 353 AM EDT Fri Apr 23 2021 ...FREEZE WARNING IS CANCELLED... Mechanical mixing has kept temperatures elevated above 32 degrees and temperatures will begin rising once the sun comes up. Therefore, the Freeze Warning has been cancelled. $$ For more information from the National Weather Service visit https://weather.gov/box
Nearby
Freeze Warnings in Rhode Island, 2021Freeze Warnings in Massachusetts, 2021Freeze Warnings in Connecticut, 2021Every freeze warning 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.