Alert archive / Massachusetts / Winter Storm Warnings in 2023

Winter Storm Warning 2, NWS Boston/Norton, MA

February 27, 20235 counties in Massachusetts; Kent County, Providence County, Washington County, Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this winter storm warning at Feb 27, 2023, 3:17 AM EST for 5 counties in Massachusetts; Kent County, Providence County, Washington County, Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Feb 27, 2023, 7:00 PM EST. It was in force for 14 hr. 60 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
Feb 27, 2023, 3:17 AM EST (08:17 UTC)
In effect from
Feb 27, 2023, 7:00 PM EST
Expired
Feb 28, 2023, 9:05 AM EST
In force
14 hr
Issued by
NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Kent County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 76 km from the middle of the area, began a volume at 08:17 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

TimeReportWhereRemark
Feb 27, 10:00 PM ESTSNOW 11 Se Chesterfield, MAREPORTED BY AMATEUR RADIO.
Feb 27, 10:09 PM ESTSNOW 1.5Middlefield, MACORRECTS PREVIOUS SNOW REPORT FROM MIDDLEFIELD. REPORTED BY TRAINED SPOTTER.
Feb 27, 10:15 PM ESTSNOW 1.12 Nw Hampden, MAREPORTED BY TRAINED SPOTTER.
Feb 27, 10:22 PM ESTSNOW 1.71 S East Longmeadow, MAREPORTED BY AMATEUR RADIO.
Feb 27, 10:29 PM ESTSNOW 1.51 Ne Northampton, MAREPORTED BY TRAINED SPOTTER.
Feb 27, 10:37 PM ESTSNOW 1.42 Nw Springfield, MAREPORTED BY AMATEUR RADIO.
Feb 27, 11:00 PM ESTSNOW 0.3Greenfield, MAREPORTED BY AMATEUR RADIO.
Feb 27, 11:00 PM ESTSNOW 0.5Leverett, MAREPORTED BY AMATEUR RADIO.
Feb 28, 12:27 AM ESTSNOW 11 Se Sutton, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 12:28 AM ESTSNOW 31 Sw Sturbridge, MA
Feb 28, 12:37 AM ESTSNOW 1.52 E Providence, RI
Feb 28, 1:36 AM ESTSNOW 0.5Worcester Ap, MA
Feb 28, 3:10 AM ESTSNOW 4Warren, MA
Feb 28, 4:22 AM ESTSNOW 4.32 Nnw West Warwick, RIREPORTED BY TRAINED SPOTTER.
Feb 28, 5:00 AM ESTSNOW 2.5Grafton, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 5:00 AM ESTSNOW 2.5Grafton, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 5:32 AM ESTSNOW 2.83 Ene Cranston, RIREPORTED BY MEDIA.
Feb 28, 5:40 AM ESTSNOW 1Natick, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 5:50 AM ESTSNOW 1.5Holden, MAREPORTED BY AMATEUR RADIO.
Feb 28, 5:50 AM ESTSNOW 1.5Holden, MAREPORTED BY AMATEUR RADIO.
Feb 28, 5:55 AM ESTSNOW 5Monson, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 5:55 AM ESTSNOW 5Monson, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 6:00 AM ESTSNOW 11 N Reading, MACOCORAHS STATION MA-MD-160 READING 1.2 N.
Feb 28, 6:00 AM ESTSNOW 11 N Reading, MACOCORAHS STATION MA-MD-160 READING 1.2 N.
Feb 28, 6:00 AM ESTSNOW 12 W Lowell, MACO-OP OBSERVER STATION LLLM3 LOWELL.
Feb 28, 6:00 AM ESTSNOW 12 W Lowell, MACO-OP OBSERVER STATION LLLM3 LOWELL.
Feb 28, 6:00 AM ESTSNOW 5.22 Nw Hampden, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 6:00 AM ESTSNOW 5.51 S Westfield, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:00 AM ESTSNOW 62 Nnw Agawam, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:00 AM ESTSNOW 62 N Southwick, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:00 AM ESTSNOW 6.82 Ese Holyoke, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:03 AM ESTSNOW 2.52 Sw Hopkinton, MA
Feb 28, 6:03 AM ESTSNOW 2.52 Sw Hopkinton, MA
Feb 28, 6:08 AM ESTSNOW 4.82 Nnw West Warwick, RIREPORTED BY TRAINED SPOTTER.
Feb 28, 6:10 AM ESTSNOW 62 Se West Springfield, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:11 AM ESTSNOW 1.11 Nnw Lexington, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 6:21 AM ESTSNOW 72 Wsw West Greenwich, RIREPORTED BY AMATEUR RADIO.
Feb 28, 6:25 AM ESTSNOW 6.21 Wsw Williamsburg, MACOCORAHS STATION MA-HS-8 WILLIAMSBURG 1.2 WSW.
Feb 28, 6:25 AM ESTSNOW 6.21 Wsw Williamsburg, MACOCORAHS STATION MA-HS-8 WILLIAMSBURG 1.2 WSW.
Feb 28, 6:25 AM ESTSNOW 6.82 Se Southampton, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 6:25 AM ESTSNOW 6.82 Se Southampton, MAREPORTED BY TRAINED SPOTTER.
Feb 28, 6:25 AM ESTSNOW 81 Ese Plainfield, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:25 AM ESTSNOW 81 Ese Plainfield, MAREPORTED BY AMATEUR RADIO.
Feb 28, 6:27 AM ESTSNOW 3.82 Nw Barrington, RICOCORAHS STATION RI-PR-77 RIVERSIDE 0.8 SE.
Feb 28, 6:27 AM ESTSNOW 3.82 Nw Barrington, RICOCORAHS STATION RI-PR-77 RIVERSIDE 0.8 SE.
Feb 28, 6:27 AM ESTSNOW 4.83 Wsw Smithfield, RI
Feb 28, 6:27 AM ESTSNOW 4.83 Wsw Smithfield, RI
Feb 28, 6:30 AM ESTSNOW 0.42 W Townsend, MACOCORAHS STATION MA-MD-47 WEST TOWNSEND 0.5 W.
Feb 28, 6:30 AM ESTSNOW 1.1Ayer, MACOCORAHS STATION MA-MD-192 AYER.
Feb 28, 6:30 AM ESTSNOW 1.1Ayer, MACOCORAHS STATION MA-MD-192 AYER.
Feb 28, 6:30 AM ESTSNOW 4.22 Sw Pawtucket, RICOCORAHS STATION RI-PR-84 PROVIDENCE 2.7 NNE.
Feb 28, 6:32 AM ESTSNOW 6.71 Nnw Charlton, MA
Feb 28, 6:34 AM ESTSNOW 33 Nnw Cumberland, RIREPORTED BY NWS EMPLOYEE.
Feb 28, 6:36 AM ESTSNOW 2.32 Wsw Westborough, MAREPORTED BY NWS EMPLOYEE.
Feb 28, 6:44 AM ESTSNOW 2.31 Wsw Westminster, MACOCORAHS STATION MA-WR-44 WESTMINSTER 0.6 WSW.
Feb 28, 6:44 AM ESTSNOW 2.31 Wsw Westminster, MACOCORAHS STATION MA-WR-44 WESTMINSTER 0.6 WSW.
Feb 28, 6:50 AM ESTSNOW 1.61 Nw Sherborn, MACOCORAHS STATION MA-MD-158 SHERBORN 1.1 NW.
Feb 28, 6:50 AM ESTSNOW 1.61 Nw Sherborn, MACOCORAHS STATION MA-MD-158 SHERBORN 1.1 NW.
Feb 28, 7:00 AM ESTSNOW 0.9Ayer, MACOCORAHS STATION MA-MD-25 AYER 0.1 SW.
Feb 28, 7:00 AM ESTSNOW 13 Ene Princeton, MACOCORAHS STATION MA-WR-56 STERLING 4.3 NW.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 8.3 hours before the alert went out and 148 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2023-02-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2023-02-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 437 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
868 m above ground
0-6 km bulk shear
111 kt
0-1 km storm-relative helicity
437 m²/s²
0-3 km storm-relative helicity
568 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

687 
WWUS41 KBOX 270817
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
317 AM EST Mon Feb 27 2023

CTZ002>004-MAZ003-004-010>012-026-RIZ001>004-006-272130-
/O.UPG.KBOX.WW.Y.0010.230228T0000Z-230301T0000Z/
/O.NEW.KBOX.WS.W.0002.230228T0000Z-230301T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Franklin MA-
Northern Worcester MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Washington RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Greenfield, Orange, Barre, Fitchburg, 
Amherst, Northampton, Springfield, Milford, Worcester, Ayer, 
Foster, Smithfield, Providence, Coventry, West Greenwich, 
East Greenwich, Warwick, West Warwick, Narragansett, and Westerly
317 AM EST Mon Feb 27 2023

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 7 PM
EST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Portions of northern Connecticut, central, eastern and 
  western Massachusetts and northern and southern Rhode Island.

* WHEN...From 7 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel will be very difficult Monday night. The
  hazardous conditions will impact the Tuesday morning commute.
  Rising temperatures and lighter snow will result in road
  conditions slowly improving Tuesday afternoon. 

* ADDITIONAL DETAILS...Snow overspreads Connecticut and western-
  central Massachusetts between 7 pm and 10 pm, then 10 pm to 1 am
  across Rhode Island. The heaviest snow and lowest visibility
  occurs from late Monday evening into the overnight. Snow
  continues to accumulate Tuesday, but at a lighter intensity.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

MAZ002-008-009-272130-
/O.UPG.KBOX.WS.A.0003.230228T0000Z-230301T0000Z/
/O.NEW.KBOX.WS.W.0002.230228T0000Z-230301T0000Z/
Western Franklin MA-Western Hampshire MA-Western Hampden MA-
Including the cities of Charlemont, Chesterfield, and Blandford
317 AM EST Mon Feb 27 2023

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 7 PM
EST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 7 to 
  10 inches.

* WHERE...Western Franklin, Western Hampshire and Western 
  Hampden Counties.

* WHEN...From 7 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel will be very difficult Monday night. The
  hazardous conditions will impact the Tuesday morning commute.

* ADDITIONAL DETAILS...Snow overspreads western Massachusetts
  between 7 pm and 10 pm. The heaviest snow and lowest visibility
  occurs from late Monday evening into the overnight. Snow
  continues to accumulate Tuesday, but at a lighter intensity.
  Given this, road conditions will slowly improve, especially 
  Tuesday afternoon.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

RIZ005-007-008-272130-
/O.EXT.KBOX.WW.Y.0010.230228T0200Z-230301T0000Z/
Bristol RI-Newport RI-Block Island RI-
Including the cities of Bristol, Newport, and New Shoreham
317 AM EST Mon Feb 27 2023

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 9 PM THIS EVENING
TO 7 PM EST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches.

* WHERE...Portions of eastern and southern Rhode Island.

* WHEN...From 9 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel will be very difficult late Monday night. The 
  Tuesday morning commute is our biggest concern.

* ADDITIONAL DETAILS...Snow overspreads Rhode Island between 10 pm
  and 1 am. The heaviest snow and lowest visibility occurs from
  late Monday evening into the overnight. Snow continues to
  accumulate Tuesday, but at a lighter intensity. Snow may mix
  with or change to rain Tuesday afternoon. This combined with
  rising temperatures, road conditions will slowly improve, 
  especially Tuesday afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

MAZ005>007-013>024-272130-
/O.CON.KBOX.WW.Y.0010.230228T0200Z-230301T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Chatham, Falmouth, Provincetown, Vineyard Haven, and Nantucket
317 AM EST Mon Feb 27 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 7 PM EST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 5 
  inches. Winds gusting as high as 35 mph.

* WHERE...Portions of eastern, northeastern and southeastern 
  Massachusetts.

* WHEN...The snow should develop between 10 pm and 2 am Tuesday 
  morning. Snow continues on Tuesday impacting the morning 
  commute. Snow will diminish in intensity Tuesday afternoon and 
  may even mix with or change to rain near the coast. In 
  addition...temps rising above freezing will likely limit the 
  impact for the Tuesday afternoon commute.

* IMPACTS...Travel will be very difficult late Monday night. The 
  Tuesday morning commute is our biggest concern.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

Nocera
3 follow-up statements
349 
WWUS41 KBOX 272031
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
331 PM EST Mon Feb 27 2023

CTZ002>004-MAZ002>004-008>012-026-RIZ001>004-006-280945-
/O.CON.KBOX.WS.W.0002.230228T0000Z-230301T0000Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Washington RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, Northampton, 
Springfield, Milford, Worcester, Ayer, Foster, Smithfield, 
Providence, Coventry, West Greenwich, East Greenwich, Warwick, 
West Warwick, Narragansett, and Westerly
331 PM EST Mon Feb 27 2023

...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 7 PM EST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 
  inches, but up to 10 inches over the higher elevations of the 
  Berkshires and Worcester Hills.

* WHERE...Portions of northern Connecticut, central, eastern and 
  western Massachusetts and northern and southern Rhode Island.

* WHEN...From 7 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel will be very difficult later tonight,
  especially after midnight. The hazardous conditions will impact
  the Tuesday morning commute. Rising temperatures and lighter 
  snow will result in road conditions slowly improving Tuesday 
  afternoon.

* ADDITIONAL DETAILS...Snow overspreads western Massachusetts,
  Connecticut and Rhode Island between 9 pm and midnight. The
  heaviest snow and lowest visibility occurs after midnight. Snow
  continues through the day on Tuesday at a lighter intensity, but
  additional accumulation after mid to late morning will be 
  mainly confined to the higher elevations. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

MAZ005>007-013>024-RIZ005-007-008-280945-
/O.CON.KBOX.WW.Y.0010.230228T0200Z-230301T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Newport RI-
Block Island RI-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Chatham, Falmouth, Provincetown, Vineyard Haven, Nantucket, 
Bristol, Newport, and New Shoreham
331 PM EST Mon Feb 27 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 7 PM EST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. 

* WHERE...Portions of eastern Massachusetts and southeast Rhode 
  Island. 

* WHEN...From 9 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel will be difficult after midnight and will
  impact the Tuesday morning commute. Rising temperatures and
  lighter snow will result in road conditions improving Tuesday 
  afternoon.

* ADDITIONAL DETAILS...Snow develops between 10 pm and 1 am. The
  heaviest snow and lowest visibility occurs after midnight. Snow
  continues through the day on Tuesday at a lighter intensity and
  may mix with or change to rain near the coast Tuesday afternoon.
  Little additional accumulation is expected after mid morning
  near the coast with minor additional accumulations possible 
  inch further inland.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$
935 
WWUS41 KBOX 280907
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
407 AM EST Tue Feb 28 2023

CTZ002>004-MAZ002>004-008>012-026-RIZ001>004-006-282215-
/O.CON.KBOX.WS.W.0002.000000T0000Z-230301T0000Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Washington RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, Northampton, 
Springfield, Milford, Worcester, Ayer, Foster, Smithfield, 
Providence, Coventry, West Greenwich, East Greenwich, Warwick, 
West Warwick, Narragansett, and Westerly
407 AM EST Tue Feb 28 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 7 
  inches.

* WHERE...Portions of northern Connecticut, central, eastern and 
  western Massachusetts and northern and southern Rhode Island.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

MAZ005>007-013>024-RIZ005-007-008-282215-
/O.CON.KBOX.WW.Y.0010.000000T0000Z-230301T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Newport RI-
Block Island RI-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Chatham, Falmouth, Provincetown, Vineyard Haven, Nantucket, 
Bristol, Newport, and New Shoreham
407 AM EST Tue Feb 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches. 
  Winds gusting as high as 40 mph.

* WHERE...Portions of eastern, northeastern and southeastern 
  Massachusetts and northern and southern Rhode Island.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
834 
WWUS41 KBOX 281405
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
905 AM EST Tue Feb 28 2023

CTZ002>004-MAZ002>004-008>012-026-RIZ001>004-006-010000-
/O.CAN.KBOX.WS.W.0002.000000T0000Z-230301T0000Z/
/O.EXA.KBOX.WW.Y.0010.000000T0000Z-230301T0000Z/
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Washington RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, Northampton, 
Springfield, Milford, Worcester, Ayer, Foster, Smithfield, 
Providence, Coventry, West Greenwich, East Greenwich, Warwick, 
West Warwick, Narragansett, and Westerly
905 AM EST Tue Feb 28 2023

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow and freezing drizzle. Additional snow accumulations
  of a coating to up to 2 inches, highest additional accumulations in
  northern Massachusetts. 

* WHERE...Central and Western Massachusetts, all of Northern
  Connecticut and northern and central Rhode Island.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

MAZ005>007-013>024-RIZ005-007-008-010000-
/O.CON.KBOX.WW.Y.0010.000000T0000Z-230301T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Bristol RI-Newport RI-
Block Island RI-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, 
Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, 
Chatham, Falmouth, Provincetown, Vineyard Haven, Nantucket, 
Bristol, Newport, and New Shoreham
905 AM EST Tue Feb 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Snow and freezing drizzle. Additional snow accumulations
  of a coating to an inch. Winds gusting as high as 40 mph.

* WHERE...Eastern Massachusetts, Cape Cod and the Islands, as well
  as southeast Rhode Island and Block Island.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Plan on slippery road conditions, especially on side
  and secondary roads.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this winter storm warning went out at Feb 27, 12:26 AM EST, 2 hours 51 minutes earlier.

Area forecast discussion, Feb 27, 12:26 AM EST, 2 hours 51 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
1226 AM EST Mon Feb 27 2023

.SYNOPSIS...
After a few brief evening snow showers...dry and chilly weather
is expected tonight into Monday afternoon. A plowable snowfall
is then expected Monday night through Tuesday, although exact
snowfall amounts are still uncertain thinking the higher amounts
occur across interior Massachusetts and Connecticut. A brief
period of dry weather is likely Wednesday, but the weather
pattern remains active/unsettled, with more precipitation
possible Wed night into early Thu, and again Friday.

&&

.NEAR TERM /THROUGH TODAY/...
915 PM Update:

Minor adjustments for the evening update to reflect current radar
and temperature trends. First, regional radar continues to show
light precipitation falling across northeast Massachusetts,
though the returns across western Massachusetts is not making it
to the ground. Previous observation in Portsmouth, NH have light
snow falling, did extend slight chance POPs into Essex County to
account for those trends at least for the next two to three
hours. Also, blended in latest RAP/HRRR temperatures which
captures the cold pool of air that is infiltrating northeast
Massachusetts. Outside of those minor adjustments our quiet
night follow as forecast, see the previous discussion below.

Previous Discussion...

* A few brief snow showers into mid evening; otherwise dry &
  seasonably cold tonight with lows in the teens/20s

* Sunshine gives way to clouds Mon with highs middle-upper 30s

Tonight...

A cold front crosses this region this evening with enough
shortwave energy to produce a few brief snow showers.
However...given temps have risen above freezing do not think
there will be much of an impact on roadways outside the highest
terrain. Otherwise...dry and seasonably chilly air works into
the region tonight. We should see at least partial clearing with
overnight lows bottoming out in the middle to upper teens in
parts of western and north central MA...to mainly the 20s
elsewhere. A bit of a northwest breeze for the first part of the
night...but that should gradually diminish after midnight.

Monday...

A ridge of high pressure moving eastward across Quebec will
result in chilly Monday. Meanwhile...low pressure over the
north central Plains will move eastward and into Ohio later
Monday. While our region will remain dry during the day
Monday...we will see sunshine early give way to increasing and
thickening during the afternoon. High temps will be in the
middle to upper 30s...which is a tad below normal for this time
of year. However...rather light winds will make it feel not too
bad outside for this time of year.

&&

.SHORT TERM /TONIGHT THROUGH 6 PM TUESDAY/...
Highlights...

* Plowable Snowfall Monday night into Tue but exact amounts will
  be determined by how quickly shortwave weakens on approach

* Higher snowfall amounts likely further southwest as well as
  the east slopes of the Berks & perhaps Worcester/RI Hills too

* Main concern is for the Tue AM Commute despite snow (or mixed
  snow/rain on coast) continuing temps rise above freezing

Details...

Monday night and Tuesday...

1) Overview & Timing...

The main focus of this forecast remains a shortwave approaching
from the west Monday night. As this happens the forcing for
ascent will increase and snow will develop. We expect snow to
develop across interior MA/CT and much of RI in the 7 to 11 pm
and into eastern MA between 10 pm and 2 am. Snow will then
falls overnight into Tuesday impacting the morning commute.
Snow will continue through Tuesday afternoon although may mix
with or change to rain across portions of the coastal plain. In
fact...temps across most of the region will rise above freezing
so roadways should not be as much of a problem for the Tuesday
afternoon commute. We will break things down a bit more below.

The main issue with this forecast is the upper level system is
de-amplifying as it moves eastward into our region as it runs
into upper level confluent flow. You can see this nicely in the
700/850 mb wind fields along with the weakening omega fields.
The global models seem to do this quicker than some of the high
resolution models/HREF. How quickly this happens will determine
the specific snowfall amounts...but there should be a southwest
to northeast gradient of lowering snowfall totals.

2) Expected Snowfall Totals & Impacts...

Current thinking is enough forcing will remain for a plowable
snowfall across the entire region. We do think that the highest
amounts will be along the east slopes of the Berks...given
their furthest west and also will benefit from some upslope
enhancement. We maintained the Winter Storm Watch in this region
for the potential of 5 to 9 inches of snow. Meanwhile...hoisted
a Winter Weather Advisory for the rest of the region for a
plowable snow. Expecting a general 3 to 6 inches of snow across
CT/RI and central MA with 2 to 5 inches across eastern MA as
well as the Cape/Islands. If some of the high resolution models
turn out to be correct and the shortwave weakens slower...we
will probably need to upgrade to Winter Storm Warnings for a
good portion of the region. Since we are right on the cusp of a
high end advisory/low end warning...so something for the next
shifts to keep in mind. This is especially true along the east
slopes of the Berks and even the Hills of RI/CT...where some
upslope enhancement may come into play.

Regardless of specific amounts...the main impact will be to the
Tuesday morning commute. While snow will continue Tue afternoon
with an inverted trough enhancement...temps will rise above
freezing outside the highest terrain. Therefore...roadways will
likely be less of an issue with prior treatments and late
February sun angle. In fact...boundary layer may even become
warm enough for Ptype to mix with or change to rain for a time
along portions of the coastal plain.

This is not expecting to be a particularly wet snow until late
in the event in the lower elevations. And while we will see a
period of 25 to 40 mph wind gusts on the coast...not concerned
about power outages being much of an issue.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Highlights:

* Dry and seasonable weather returns on Wednesday before
  precipitation returns on Thursday, mostly in the form of light
  rain.

* Monitoring a potential winter storm for Friday into Saturday.

Details...

Tuesday night through Thursday...

A mid level ridge builds in Tuesday night with high pressure at the
surface. The ridge axis crosses southern New England Wednesday
afternoon, and this should provide us with a dry day for most of
Wednesday featuring light winds and normal to even just above normal
high temperatures. Most locations will experience temperatures in
the mid to upper 40s. By Wednesday evening moisture begins to round
the ridge ahead of a northern stream shortwave which passes to our
north Wed night/Thu. This will kick off some scattered showers as
early as Wednesday evening but the better chance comes overnight
into Thursday as a warm front lifts north through the region.
Depending on the magnitude of warm advection and the timing of the
cold front on Thursday, temps could get decently warmer than normal,
into the upper 40s and low 50s. Thus, outside of the highest
elevations of NW Massachusetts any precip that falls should be in
the form of rain. The 30-40 kt low level jet overhead will not only
provide forcing for ascent but will make for some gusty winds,
mainly over the waters and along the coast.

Friday through the weekend...

Uncertainty increases beyond Thursday but all eyes are on the
potential for an impactful winter storm in the Friday/Saturday
timeframe. A deep cutoff mid level low over Texas on Thursday night
will eject into the vicinity of New England by late Friday, and the
track will be key in determining if this brings us significant
snowfall, a wintry mix, or nothing at all. While we are still 5 days
out global guidance only recently came into agreement in showing a
New England snowstorm during this period (with the ECMWF indicating
a similar solution to what the GFS has been depicting fairly
consistently). At this juncture we will lean on a blend of ensemble
guidance. The EPS indicates a >50% chance of 6+inches in interior MA
while the GEFS is more in the 30-50% range. Certainly one of the
better signals we've seen so far this winter, but there remains a
large spread in the ensemble member low tracks, so take it with a
grain of salt. Stay tuned.

&&

.AVIATION /06Z MONDAY THROUGH FRIDAY/...
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

06z TAF Update:

Through 12z...High confidence.

Mostly VFR, sct'd areas of MVFR across eastern MA and northern
CT into western MA. NW to N wind 5 to 10 kts. Gust to 20 kts
for Cape & Island terminals.

Monday...High confidence.

VFR. Increasing clouds throughout the late morning and afternoon
with lowest ceilings 040 to 060 generally after 18z. N wind becoming
SE then E 5 to 10 kts.

Monday Night and Tuesday...High confidence.

Snow develops across western MA/CT between 00z and 03z and reaches
eastern MA between 04z and 06z Tuesday. This will result in IFR to
LIFR conditions developing and continuing into Tuesday afternoon.

Between two and six inches of snow is expected on airport runways
with highest amounts expected as one heads west. While snow will
continue through the afternoon temperatures rising above freezing
should limit the impacts on runways, especially along the coastal
plain where precipitation type may mix with or even change to rain
for a time.

Winds generally NE later Monday night into Tuesday with some 20 to
30 kt gusts developing for a time along the coast during the day
Tuesday. Perhaps up to 35 knots across parts of the Cape/Nantucket.

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Mainly VFR, with local MVFR possible. Breezy.
Chance SN.

Wednesday: VFR. Breezy. Slight chance RA.

Wednesday Night: Mainly VFR, with local IFR possible. Breezy.
Chance RA.

Thursday: Mainly VFR, with local IFR possible. Windy with areas
of gusts up to 30 kt. Chance RA.

&&

.MARINE...
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

Tonight through Tuesday...High Confidence.

Small craft northwest wind gusts develop across most open
waters tonight behind this evening/s cold front. Winds shift to
the NE during the day Mon and temporarily diminish as a high
passes by to our north. Low pressure then passes south of us Mon
night into Tue...resulting in easterly wind gusts of 30-35
knots developing along with 6 to 10 foot seas. We continued the
small craft headlines tonight with Gale Watches Monday night
into Tuesday for most of our waters.

Outlook /Tuesday Night through Friday/...

Tuesday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 10 ft. Chance of rain.

Wednesday: Winds less than 25 kt. Areas of rough seas.

Wednesday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of rough seas. Chance of rain.

Thursday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of rough seas. Rain likely.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Tuesday for CTZ002>004.
MA...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Tuesday for MAZ003-004-010>012-026.
     Winter Storm Watch from this evening through Tuesday evening
     for MAZ002-008-009.
     Winter Weather Advisory from 9 PM this evening to 7 PM EST
     Tuesday for MAZ005>007-013>024.
RI...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Tuesday for RIZ001>008.
MARINE...Small Craft Advisory until 3 AM EST early this morning for
     ANZ231>235-237-251.
     Gale Watch from late tonight through Tuesday afternoon for
     ANZ231>233-235-237-250-251-254>256.
     Small Craft Advisory until 7 AM EST this morning for ANZ250-
     254>256.

&&

SYNOPSIS...Frank/BW
NEAR TERM...Frank/Gaucher
SHORT TERM...Frank
LONG TERM...BW
AVIATION...BW/Gaucher
MARINE...Frank/BW
Hazardous weather outlook, Feb 26, 4:08 PM EST, 11 hours 9 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
408 PM EST Sun Feb 26 2023

CTZ002>004-MAZ003-004-010>012-026-RIZ001>008-272115-
Hartford CT-Tolland CT-Windham CT-Eastern Franklin MA-
Northern Worcester MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
408 PM EST Sun Feb 26 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM MONDAY TO 7 PM EST
TUESDAY...

This Hazardous Weather Outlook is for northern Connecticut, central
Massachusetts, eastern Massachusetts, western Massachusetts,
and Rhode Island.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ005>007-013>024-272115-
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-
408 PM EST Sun Feb 26 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM MONDAY TO 7 PM EST
TUESDAY...

This Hazardous Weather Outlook is for eastern Massachusetts,
northeastern Massachusetts and southeastern Massachusetts.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ002-008-009-272115-
Western Franklin MA-Western Hampshire MA-Western Hampden MA-
408 PM EST Sun Feb 26 2023

...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY
EVENING...

This Hazardous Weather Outlook is for western Massachusetts.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ231>233-235-237-250-251-254>256-272115-
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Rhode Island Sound-
Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard and
Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out to
20 nm South of Block Island-
408 PM EST Sun Feb 26 2023

...GALE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
AFTERNOON...

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230-234-236-272115-
Boston Harbor-Buzzards Bay-Narragansett Bay-
408 PM EST Sun Feb 26 2023

This Hazardous Weather Outlook is for Massachusetts coastal waters
and Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

For more information on upcoming hazardous weather, please see the
Area Forecast Discussion on our webpage for the latest forecast
thinking. There is also our Enhanced Hazardous Weather Outlook at
www.weather.gov/box/ehwo

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 27, 3:25 AM ESTGale WarningBOX36 hr
Feb 27, 3:25 AM ESTSmall Craft AdvisoryBOX4 days

Nearby

Winter Storm Warnings in Massachusetts, 2023Winter Storm Warnings in Rhode Island, 2023Winter Storm Warnings in Connecticut, 2023Every winter storm warning in 2023

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.