Alert archive / Massachusetts / Winter Storm Warnings in 2021
Winter Storm Warning 1, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter storm warning at Jan 16, 2021, 7:50 AM EST for Franklin County, Massachusetts. It was in force for 4 hr. 12 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
- Jan 16, 2021, 7:50 AM EST (12:50 UTC)
- Expired
- Jan 16, 2021, 11:25 AM EST
- In force
- 4 hr
- Issued by
- NWS Boston/Norton, MA
County Franklin County, MA
The radar
The Albany radar (KENX), 121 km from the middle of the area, began a volume at 12:54 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 |
|---|---|---|---|
| Jan 16, 8:01 AM EST | SNOW 7 | Heath, MA | |
| Jan 16, 8:01 AM EST | SNOW 7 | Heath, MA | |
| Jan 16, 8:09 AM EST | HEAVY SNOW 0 | Colrain, MA | POWER LINES DOWN ON ADAMSVILLE ROAD |
| Jan 16, 8:09 AM EST | HEAVY SNOW 0 | Colrain, MA | POWER LINES DOWN ON ADAMSVILLE ROAD DUE TO HEAVY WET SNOW |
| Jan 16, 8:47 AM EST | SNOW 8.5 | Ashfield, MA | |
| Jan 16, 8:49 AM EST | SNOW 10 | East Hawley, MA | |
| Jan 16, 8:55 AM EST | HEAVY SNOW 0 | Heath, MA | TREE DOWN ON WIRES DUE TO WET HEAVY SNOW |
| Jan 16, 9:25 AM EST | HEAVY SNOW 0 | Shelburne, MA | WIRES DOWN ON RTE 2 DUE TO HEAVY WET SNOW |
| Jan 16, 9:34 AM EST | SNOW 4 | Shelburne Falls, MA | |
| Jan 16, 9:58 AM EST | HEAVY SNOW 0 | Heath, MA | TREE DOWN BLOCKING BURNT HILL ROAD DUE TO WET HEAVY SNOW |
| Jan 16, 9:58 AM EST | SNOW 8.3 | Heath, MA | |
| Jan 16, 10:18 AM EST | HEAVY SNOW 0 | Charlemont, MA | TREE AND WIRES DOWN ON WEST OXBOW ROAD DUE TO HEAVY WET SNOW |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 0.8 hours before the alert went out and 102 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
- 712 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 432 m²/s²
- 0-3 km storm-relative helicity
- 531 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
511 WWUS41 KBOX 161250 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 750 AM EST Sat Jan 16 2021 MAZ002-161700- /O.UPG.KBOX.WW.Y.0002.000000T0000Z-210116T1400Z/ /O.NEW.KBOX.WS.W.0001.210116T1250Z-210116T1700Z/ Western Franklin MA- Including the city of Charlemont 750 AM EST Sat Jan 16 2021 ...WINTER STORM WARNING IN EFFECT UNTIL NOON EST TODAY... * WHAT...Heavy wet snow changing to rain this morning. Total snow accumulations of 4 to 9 inches. Highest amounts at elevations above 1500 feet. * WHERE...Western Franklin MA County. * WHEN...Until noon EST today. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy wet snow may result in scattered power outages in the highest terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$ MAZ008-161400- /O.CON.KBOX.WW.Y.0002.000000T0000Z-210116T1400Z/ Western Hampshire MA- Including the city of Chesterfield 750 AM EST Sat Jan 16 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... * WHAT...Wet snow changing to rain. Total snow accumulations of 2 to 6 inches. * WHERE...Western Hampshire MA County. * WHEN...Until 9 AM EST this morning. * IMPACTS...Plan on slippery road conditions. A few downed tree limbs possible from the heavy wet snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ Frank
2 follow-up statements
865 WWUS41 KBOX 161342 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 842 AM EST Sat Jan 16 2021 MAZ002-161700- /O.CON.KBOX.WS.W.0001.000000T0000Z-210116T1700Z/ Western Franklin MA- Including the city of Charlemont 842 AM EST Sat Jan 16 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY... * WHAT...Heavy wet snow ending this morning. Total accumulations of 5 to 10 inches with the highest amounts above 1500 feet. * WHERE...Western Franklin MA County. * WHEN...Until noon EST today. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Heavy wet snow will be ending this morning. However, scattered power outages and some downed tree limbs may continue as a result of the wet snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$ MAZ008-161600- /O.EXT.KBOX.WW.Y.0002.000000T0000Z-210116T1600Z/ Western Hampshire MA- Including the city of Chesterfield 842 AM EST Sat Jan 16 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM EST THIS MORNING... * WHAT...Wet snow and rain will be ending this morning. Total snow accumulations of 3 to 8 inches with the greatest amounts above 1500 feet. * WHERE...Western Hampshire MA County. * WHEN...Until 11 AM EST this morning. * IMPACTS...Wet snow and rain will be ending this morning. However, scattered power outages are possible above 1500 feet from where the heavy wet snow occurred. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ Frank
975 WWUS41 KBOX 161625 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 1125 AM EST Sat Jan 16 2021 MAZ002-161730- /O.CAN.KBOX.WS.W.0001.000000T0000Z-210116T1700Z/ Western Franklin MA- Including the city of Charlemont 1125 AM EST Sat Jan 16 2021 ...WINTER STORM WARNING IS CANCELLED... The heavy snow has come to an end, therefore the Winter Storm Warning has been cancelled. Scattered rain and snow showers remain possible this afternoon, but any additional accumulations will be less than 1 inch and confined to the highest terrain. $$ MAZ008-161730- /O.EXP.KBOX.WW.Y.0002.000000T0000Z-210116T1600Z/ Western Hampshire MA- Including the city of Chesterfield 1125 AM EST Sat Jan 16 2021 ...WINTER WEATHER ADVISORY HAS EXPIRED... The snow has come to an end and the winter weather advisory has been allowed to expire. Scattered rain and snow showers remain possible this afternoon, but any additional accumulations will be less than 1 inch and confined to the highest terrain. $$ Frank
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 3:03 AM EST | Wind Advisory | BOX | Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 3 more | 9 hr |
| Jan 16, 1:08 PM EST | Gale Warning | BOX | 35 hr |
Nearby
Winter Storm Warnings in Massachusetts, 2021Every winter storm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.