Alert archive / Massachusetts / Winter Storm Warnings in 2023

Winter Storm Warning 3, NWS Boston/Norton, MA

March 3, 20236 counties in Massachusetts

NWS Boston/Norton, MA issued this winter storm warning at Mar 3, 2023, 3:28 AM EST for 6 counties in Massachusetts. It took effect at Mar 3, 2023, 7:00 PM EST. It was in force for 20 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
Mar 3, 2023, 3:28 AM EST (08:28 UTC)
In effect from
Mar 3, 2023, 7:00 PM EST
Expired
Mar 4, 2023, 2:50 PM EST
In force
20 hr
Issued by
NWS Boston/Norton, MA

Counties Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 89 km from the middle of the area, began a volume at 08:30 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
Mar 4, 12:15 AM ESTSNOW 1.3Worcester Ap, MA
Mar 4, 3:25 AM ESTSNOW 4.52 Se West Springfield, MAREPORTED BY AMATEUR RADIO.
Mar 4, 4:00 AM ESTSNOW 2.21 N Ashland, MA
Mar 4, 4:48 AM ESTSNOW 11 W Malden, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 5:00 AM ESTSNOW 2.5Grafton, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 5:15 AM ESTSNOW 1.51 N Ashland, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 5:23 AM ESTSNOW 2.51 Nw Lexington, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 5:35 AM ESTSNOW 31 E Andover, MACOCORAHS STATION MA-ES-48 ANDOVER 0.6 E.
Mar 4, 5:46 AM ESTSNOW 4.31 W Pepperell, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 6:00 AM ESTSNOW 2.81 N Methuen, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 6:00 AM ESTSNOW 31 N Reading, MACOCORAHS STATION MA-MD-160 READING 1.2 N.
Mar 4, 6:00 AM ESTSNOW 31 Ssw Holden, MACOCORAHS STATION MA-WR-89 HOLDEN 0.9 SSE.
Mar 4, 6:00 AM ESTSNOW 32 W Lowell, MACO-OP OBSERVER STATION LLLM3 LOWELL.
Mar 4, 6:00 AM ESTSNOW 4.53 Se Westfield, MACOCORAHS STATION MA-HD-28 WESTFIELD 2.8 SE.
Mar 4, 6:30 AM ESTSNOW 2.3Hopkinton, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 6:30 AM ESTSNOW 5.12 W Townsend, MACOCORAHS STATION MA-MD-47 WEST TOWNSEND 0.5 W.
Mar 4, 6:30 AM ESTSNOW 7.82 Se Southampton, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 6:35 AM ESTSNOW 71 Wsw Williamsburg, MACOCORAHS STATION MA-HS-8 WILLIAMSBURG 1.2 WSW.
Mar 4, 6:41 AM ESTSNOW 8.71 Wsw Westminster, MACOCORAHS STATION MA-WR-44 WESTMINSTER 0.6 WSW.
Mar 4, 6:45 AM ESTSNOW 3.1Ayer, MACOCORAHS STATION MA-MD-25 AYER 0.1 SW.
Mar 4, 6:55 AM ESTSNOW 32 Sw Westborough, MAREPORTED BY NWS EMPLOYEE.
Mar 4, 7:00 AM ESTSNOW 11 W Medford, MACOCORAHS STATION MA-MD-44 MEDFORD 1.2 W.
Mar 4, 7:00 AM ESTSNOW 1.41 N Newburyport, MACOCORAHS STATION MA-ES-70 NEWBURYPORT 0.6 N.
Mar 4, 7:00 AM ESTSNOW 1.5Newburyport, MACOCORAHS STATION MA-ES-64 NEWBURYPORT 0.4 NNW.
Mar 4, 7:00 AM ESTSNOW 1.6Melrose, MACOCORAHS STATION MA-MD-126 MELROSE 0.5 NE.
Mar 4, 7:00 AM ESTSNOW 22 Nne Douglas, MACOCORAHS STATION MA-WR-100 DOUGLAS 1.9 NNE.
Mar 4, 7:00 AM ESTSNOW 2.51 W Topsfield, MACOCORAHS STATION MA-ES-12 BOXFORD 2.4 S.
Mar 4, 7:00 AM ESTSNOW 2.52 Nne Framingham, MACOCORAHS STATION MA-MD-178 FRAMINGHAM 2.0 NNE.
Mar 4, 7:00 AM ESTSNOW 2.5Middleton, MACO-OP OBSERVER STATION MIDM3 MIDDLETON.
Mar 4, 7:00 AM ESTSNOW 31 Sw Haverhill, MACOCORAHS STATION MA-ES-90 HAVERHILL 0.8 SW.
Mar 4, 7:00 AM ESTSNOW 32 W Oxford, MACO-OP OBSERVER STATION OXFM3 BUFFUMVILLE LAKE.
Mar 4, 7:00 AM ESTSNOW 3.11 Nw Hudson, MACOCORAHS STATION MA-MD-115 HUDSON 1.4 NW.
Mar 4, 7:00 AM ESTSNOW 3.21 Ssw Agawam, MACOCORAHS STATION MA-HD-33 AGAWAM 1.1 SSW.
Mar 4, 7:00 AM ESTSNOW 3.42 Wsw Warren, MACOCORAHS STATION MA-WR-75 WARREN 2.4 WSW.
Mar 4, 7:00 AM ESTSNOW 3.52 S Harvard, MACOCORAHS STATION MA-WR-55 HARVARD 2.1 S.
Mar 4, 7:00 AM ESTSNOW 3.52 Wnw Wilmington, MACOCORAHS STATION MA-MD-85 WILMINGTON 2.2 WNW.
Mar 4, 7:00 AM ESTSNOW 3.54 W Sudbury, MACOCORAHS STATION MA-MD-89 SUDBURY 3.6 W.
Mar 4, 7:00 AM ESTSNOW 43 Wnw Sturbridge, MACO-OP OBSERVER STATION EBRM3 EAST BRIMFIELD LAKE.
Mar 4, 7:00 AM ESTSNOW 4.11 Ese Maynard, MACOCORAHS STATION MA-MD-51 MAYNARD 0.7 ESE.
Mar 4, 7:00 AM ESTSNOW 4.52 Ene Holyoke, MACOCORAHS STATION MA-HS-56 SOUTH HADLEY 3.2 SSW.
Mar 4, 7:00 AM ESTSNOW 4.52 Se Sunderland, MACO-OP OBSERVER STATION SDLM3 SUNDERLAND.
Mar 4, 7:00 AM ESTSNOW 4.52 Wnw Pelham, MACOCORAHS STATION MA-FR-38 SHUTESBURY 2.9 SW.
Mar 4, 7:00 AM ESTSNOW 4.81 Nne Barre, MACOCORAHS STATION MA-WR-54 BARRE 1.4 NNE.
Mar 4, 7:00 AM ESTSNOW 51 Sw Bernardston, MACOCORAHS STATION MA-FR-35 BERNARDSTON 1.0 SW.
Mar 4, 7:00 AM ESTSNOW 5.11 Ese Newbury, MACOCORAHS STATION MA-ES-86 WEST NEWBURY 1.1 ESE.
Mar 4, 7:00 AM ESTSNOW 5.42 W Leverett, MACO-OP OBSERVER STATION LEVM3 LEVERETT.
Mar 4, 7:00 AM ESTSNOW 63 Nw Ashburnham, MACO-OP OBSERVER STATION ABNM3 ASHBURNHAM NORTH.
Mar 4, 7:00 AM ESTSNOW 7.22 N Westfield, MACOCORAHS STATION MA-HD-44 WESTFIELD 2.2 N.
Mar 4, 7:00 AM ESTSNOW 8.43 Nw Conway, MACOCORAHS STATION MA-FR-13 CONWAY 2.9 NW.
Mar 4, 7:00 AM ESTSNOW 9.34 Wnw Colrain, MACOCORAHS STATION MA-FR-31 COLRAIN 3.7 WNW.
Mar 4, 7:00 AM ESTSNOW 12.11 Ne Ashfield, MACOCORAHS STATION MA-FR-22 ASHFIELD 1.4 NE.
Mar 4, 7:10 AM ESTSNOW 3.12 Se Worcester, MACOCORAHS STATION MA-WR-81 WORCESTER 1.6 SE.
Mar 4, 7:10 AM ESTSNOW 3.5Stow, MAREPORTED BY MEDIA.
Mar 4, 7:11 AM ESTSNOW 6.2Ashburnham, MA
Mar 4, 7:15 AM ESTSNOW 31 Nw Amherst, MACO-OP OBSERVER STATION AHRM3 AMHERST.
Mar 4, 7:20 AM ESTSNOW 1.71 W Holliston, MACOCORAHS STATION MA-MD-55 HOLLISTON 0.7 W.
Mar 4, 7:20 AM ESTSNOW 21 N Stoneham, MAREPORTED BY TRAINED SPOTTER.
Mar 4, 7:20 AM ESTSNOW 73 Ese Greenfield, MACOCORAHS STATION MA-FR-36 MONTAGUE 3.4 NNW.
Mar 4, 7:25 AM ESTSNOW 1.31 Sw Newburyport, MACOCORAHS STATION MA-ES-24 NEWBURYPORT 0.8 SW.
Mar 4, 7:25 AM ESTSNOW 1.51 Se Winchester, MACOCORAHS STATION MA-MD-7 WINCHESTER 0.7 SE.

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, 8.5 hours before the alert went out and 187 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 2023-03-03Temperature 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 2023-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -76 square meters per square second.1939587897117136156175Sfc1 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
1348 m above ground
0-6 km bulk shear
105 kt
0-1 km storm-relative helicity
-76 m²/s²
0-3 km storm-relative helicity
-104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

794 
WWUS41 KBOX 030828
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
328 AM EST Fri Mar 3 2023

MAZ002>006-008>010-026-032130-
/O.UPG.KBOX.WS.A.0004.230304T0000Z-230305T0000Z/
/O.NEW.KBOX.WS.W.0003.230304T0000Z-230305T0000Z/
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Northern Middlesex MA-
Including the cities of Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford,
Amherst, Northampton, and Ayer
328 AM EST Fri Mar 3 2023

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

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 
  11 inches. Winds gusting as high as 40 mph.

* WHERE...Portions of central, eastern, northeastern and western 
  Massachusetts.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTZ002>004-MAZ007-011>015-017-RIZ001>003-032130-
/O.NEW.KBOX.WW.Y.0012.230304T0000Z-230305T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Essex MA-
Eastern Hampden MA-Southern Worcester MA-Western Norfolk MA-
Southeast Middlesex MA-Suffolk MA-Northern Bristol MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Gloucester, Springfield, Milford, Worcester,
Foxborough, Norwood, Cambridge, Boston, Taunton, Foster, 
Smithfield, Providence, Coventry, and West Greenwich
328 AM EST Fri Mar 3 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
7 PM EST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 6 
  inches. Winds gusting as high as 45 mph.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
5 follow-up statements
383 
WWUS41 KBOX 031206
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
706 AM EST Fri Mar 3 2023

MAZ002>006-008>010-026-040115-
/O.CON.KBOX.WS.W.0003.230304T0000Z-230305T0000Z/
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Northern Middlesex MA-
Including the cities of Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford,
Amherst, Northampton, and Ayer
706 AM EST Fri Mar 3 2023

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

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 
  11 inches. Winds gusting as high as 40 mph.

* WHERE...Portions of central, eastern, northeastern and western 
  Massachusetts.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTZ002>004-MAZ007-011>015-017-RIZ001>003-040115-
/O.CON.KBOX.WW.Y.0012.230304T0000Z-230305T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Essex MA-
Eastern Hampden MA-Southern Worcester MA-Western Norfolk MA-
Southeast Middlesex MA-Suffolk MA-Northern Bristol MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Gloucester, Springfield, Milford, Worcester,
Foxborough, Norwood, Cambridge, Boston, Taunton, Foster, 
Smithfield, Providence, Coventry, and West Greenwich
706 AM EST Fri Mar 3 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 
PM EST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 6 
  inches. Winds gusting as high as 45 mph.

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

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
080 
WWUS41 KBOX 031914
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
214 PM EST Fri Mar 3 2023

MAZ007-040815-
/O.UPG.KBOX.WW.Y.0012.230304T0000Z-230305T0000Z/
/O.EXA.KBOX.WS.W.0003.230304T0000Z-230305T0000Z/
Eastern Essex MA-
Including the city of Gloucester
214 PM EST Fri Mar 3 2023

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

* WHAT...Heavy snow expected. Total snow accumulations of 3 to 8
  inches, highest amounts near the New Hampshire border.

* WHERE...Eastern Essex County.

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

* IMPACTS...Travel could be difficult overnight and Saturday. 

* ADDITIONAL DETAILS...Snow develops around midnight and changes
  to rain on Cape Ann Saturday morning. The snow may be heavy at 
  times overnight. Another period of moderate to heavy snow is 
  possible late Saturday morning into the afternoon.
  
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MAZ002>006-008>010-026-040815-
/O.CON.KBOX.WS.W.0003.230304T0000Z-230305T0000Z/
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Northern Middlesex MA-
Including the cities of Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford,
Amherst, Northampton, and Ayer
214 PM EST Fri Mar 3 2023

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

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches, highest amounts along and north of Route 2 corridor. 
 
* WHERE...Portions of central, eastern, northeastern and western 
  Massachusetts.

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

* IMPACTS...Travel could be difficult overnight and Saturday.
  Heavy snow may lead to snow load issues over the higher
  elevations of the Berkshires and Worcester Hills with some 
  power outages possible. 

* ADDITIONAL DETAILS...Snow develops from west to east between 8
  pm and midnight. The snow may be heavy at times overnight, but
  will mix with and change to sleet and freezing rain, especially
  south of Route 2 corridor. Another period of moderate to heavy
  snow is possible Saturday morning into the afternoon, mainly
  across northern Massachusetts. Elsewhere, any mixed  
  precipitation should change back to snow by midday before ending
  later in the afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTZ002>004-MAZ011>015-017-RIZ001>003-040815-
/O.CON.KBOX.WW.Y.0012.230304T0000Z-230305T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Northern Bristol MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Springfield, Milford, Worcester, Foxborough,
Norwood, Cambridge, Boston, Taunton, Foster, Smithfield, 
Providence, Coventry, and West Greenwich
214 PM EST Fri Mar 3 2023

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

* WHAT...Snow expected. Total snow accumulations of 2 to 6 inches,
  highest amounts near the Mass Pike and west of Route 128. 

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

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

* IMPACTS...Plan on slippery road conditions. 

* ADDITIONAL DETAILS...Snow develops from west to east between 8
  pm and midnight, and changes to sleet then rain. Pockets of
  freezing rain possible near the Mass Pike. Rain may change to a
  period of snow Saturday afternoon before ending. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
956 
WWUS41 KBOX 040255
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
955 PM EST Fri Mar 3 2023

MAZ002>010-026-041600-
/O.CON.KBOX.WS.W.0003.000000T0000Z-230305T0000Z/
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA-
Northern Middlesex MA-
Including the cities of Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Framingham, Lowell, Lawrence, Gloucester, 
Chesterfield, Blandford, Amherst, Northampton, and Ayer
955 PM EST Fri Mar 3 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 PM EST
SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  12 inches, highest amounts along and north of Route 2 corridor.

* WHERE...Portions of central, eastern, northeastern and western 
  Massachusetts.

* WHEN...Until 7 PM EST Saturday.

* IMPACTS...Travel could be very difficult. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTZ002>004-MAZ011>015-017-RIZ001>003-041600-
/O.CON.KBOX.WW.Y.0012.000000T0000Z-230305T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Northern Bristol MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Springfield, Milford, Worcester, Foxborough,
Norwood, Cambridge, Boston, Taunton, Foster, Smithfield, 
Providence, Coventry, and West Greenwich
955 PM EST Fri Mar 3 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 6 
  inches, highest amounts near the Mass Pike and west of Route 
  128.

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

* WHEN...Until 7 PM EST Saturday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
412 
WWUS41 KBOX 041718
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
1218 PM EST Sat Mar 4 2023

MAZ002>004-008>010-041830-
/O.CAN.KBOX.WS.W.0003.000000T0000Z-230305T0000Z/
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA-
Including the cities of Charlemont, Greenfield, Orange, Barre, 
Fitchburg, Chesterfield, Blandford, Amherst, and Northampton
1218 PM EST Sat Mar 4 2023

...WINTER STORM WARNING IS CANCELLED...

Light snow may linger, but flake sized will be small and
additional accumulations are no longer expected to be 
significant. Therefore, the Winter Storm Warning has been 
cancelled. Continue to exercise caution if traveling as secondary 
and side roads may be slippery.

$$

CTZ002>004-MAZ011-012-041830-
/O.CAN.KBOX.WW.Y.0012.000000T0000Z-230305T0000Z/
Hartford CT-Tolland CT-Windham CT-Eastern Hampden MA-
Southern Worcester MA-
Including the cities of Hartford, Windsor Locks, Union, Vernon, 
Putnam, Willimantic, Springfield, Milford, and Worcester
1218 PM EST Sat Mar 4 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

Light snow may linger, but flake sized will be small and
additional accumulations are no longer expected to be 
significant. Therefore, the Winter Weather Advisory has been 
cancelled. Continue to exercise caution if traveling as secondary 
and side roads may be slippery.

$$

MAZ005>007-026-050000-
/O.CON.KBOX.WS.W.0003.000000T0000Z-230305T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Northern Middlesex MA-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
and Ayer
1218 PM EST Sat Mar 4 2023

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

* WHAT...Heavy snow. Additional snow accumulations of up to two 
  inches. Winds gusting as high as 50 mph.

* WHERE...Northern and Central Middlesex, and Essex Counties.

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

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MAZ013>015-017-RIZ001>003-050000-
/O.CON.KBOX.WW.Y.0012.000000T0000Z-230305T0000Z/
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Northern Bristol MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-
Including the cities of Foxborough, Norwood, Cambridge, Boston, 
Taunton, Foster, Smithfield, Providence, Coventry, 
and West Greenwich
1218 PM EST Sat Mar 4 2023

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

* WHAT...Snow. Additional snow accumulations of up to one inch. 
  Winds gusting as high as 45 mph.

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

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

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
368 
WWUS41 KBOX 041950
WSWBOX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Boston/Norton MA
250 PM EST Sat Mar 4 2023

MAZ005>007-026-042100-
/O.CAN.KBOX.WS.W.0003.000000T0000Z-230305T0000Z/
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Northern Middlesex MA-
Including the cities of Framingham, Lowell, Lawrence, Gloucester,
and Ayer
250 PM EST Sat Mar 4 2023

...WINTER STORM WARNING IS CANCELLED...

Light snow may linger, but flake sized will be small and
additional accumulations are no longer expected to be 
significant. Therefore, the Winter Storm Warning has been 
cancelled. Continue to exercise caution if traveling as secondary 
and side roads may be slippery.

$$

MAZ013>015-017-RIZ001>003-042100-
/O.CAN.KBOX.WW.Y.0012.000000T0000Z-230305T0000Z/
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Northern Bristol MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-
Including the cities of Foxborough, Norwood, Cambridge, Boston, 
Taunton, Foster, Smithfield, Providence, Coventry, 
and West Greenwich
250 PM EST Sat Mar 4 2023

...WINTER WEATHER ADVISORY IS CANCELLED...

Light snow may linger, but flake sized will be small and
additional accumulations are no longer expected to be 
significant. Therefore, the Winter Weather Advisory has been 
cancelled. Continue to exercise caution if traveling as secondary 
and side roads may be slippery.

$$

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 Mar 3, 2:52 AM EST, 36 minutes earlier.

Area forecast discussion, Mar 3, 2:52 AM EST, 36 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
252 AM EST Fri Mar 3 2023

.SYNOPSIS...
High pressure briefly provides clearing and quiet conditions
through this afternoon. An approaching low pressure will bring
snow and a wintry mix tonight into Saturday, with more
significant weather impacts favored north of I-90. Very
unsettled pattern sets up for next week. Temperatures will run
above normal Monday and Tuesday, before more seasonable
temperatures return. Another chance for a wintry mix Wednesday
night into Thursday, gives way to much colder conditions to end
the work week. A second chance for wintry precipitation should
develop sometime next weekend.

&&

.NEAR TERM /THROUGH TODAY/...
Still looking for a relatively quiet day weather-wise.
Increasing clouds ahead an approaching low pressure later today.
Gusty NW winds this morning expected to diminish, then become N
through the day. Should be slightly colder today than Thursday,
but still near normal for early March. Still thinking the brunt
of precipitation begins after the evening commute across
southern New England.

&&

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

* Significant snowfall possible north of the Mass Pike tonight
  into Saturday, with snow and sleet transitioning to rain near
  the coast

Precipitation...

Deja vu from earlier this week, but not exactly. As has been
previously discussed, a deamplifying mid level shortwave is
expected to generate a secondary coastal low pressure late
tonight into Saturday. This secondary low pressure should track
near the south coast of New England Saturday.

The challenge remains temperatures, and their impact on
precipitation type. Snowfall is most likely tonight, with
increasingly less favorable conditions during the day Saturday.

Latest suite has come into better agreement on the thermal
profile, but still far from perfect. Overall, temperatures will
marginally support snowfall at night. Once the sun starts
working on heating Saturday, snowfall production should go way
down, especially across northern CT, much of RI and SE MA.
Expecting snow at the onset of precipitation this evening, which
then transitions to a mix of snow and sleet south of the Mass
Pike after midnight. Warmer air continues to stream north,
leading to a wintry mix even across the higher terrain Saturday,
with rain expected towards the coasts. The best chance for all
snow will be across far northern MA, along and north of the
Route 2 corridor.

In addition to the marginal temperatures, the dendritic growth
zone should be drying out from south to north during the day
Saturday. Favored snow ratios less than 10:1 at elevations
generally less than 500 feet.

Widespread precipitation should diminish from SW to NE during
the day Saturday. Depending on the exact timing, it is possible
for it to end as a period of light snow.

Wind...

Fairly robust easterly low level jet develops late tonight into
Saturday and will bring strong wind gusts to E coastal MA and
Cape/Islands.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
Highlights

* Quiet seasonable weather on Sunday will be followed by a
  similar day Monday, but with gusty northwest winds

* Weak low pressure may support rain/snow showers late Monday
  night into Tuesday. No substantial accumulations expected

* Northwest flow supports dry weather and near to slightly below
  normal temperatures during the day and night through the end
  of next week

Saturday night through Monday

A few snow showers may linger along the east coast before
midnight Saturday as a coastal low pressure system moves into
the Canadian maritimes. Weak high pressure builds over the
region on Sunday and supports a seasonable day with a mix of sun
and clouds and highs in the upper 30s to low 40s.

By Sunday night, the area of low-pressure over The Atlantic runs
into a blocking pattern near Greenland and results in a broad
cyclonic flow that will support a prolonged period of northwest
flow over The Northeast. As a mid-level ridge over the Midwest
builds east Sunday night, the surface pressure gradient over The
Northeast strengthens and begins to support gusty northwest
winds over southern New England. This will lead to a dry sunny
day on Monday with seasonable temperatures. However, northwest
wind gusts from 20 to 30 mph on Monday will make for a
cold/blustery day.

Tuesday

Recent model guidance has suggested that a progressive shortwave
will traverse over The Great Lakes and through the Northeast
late Monday night into Tuesday. This would bring an end to the
gusty northwest winds from Monday as the associated area of
surface low-pressure simply gets absorbed by the broader
cyclonic flow over The Atlantic. This system will bring with
it measurable precipitation and the potential for some snow
showers. Model guidance has been bearish on QPF amounts which
have generally come in around a tenth of an inch when consulting
global ensemble means. If the ensemble mean forecast comes to
fruition, that would mean any areas that experience snow would
be limited to accumulations ranging from a dusting to an inch.
Of course at this time range there remains uncertainty, but this
does not appear to be a system that will bring with it any
significant impacts.

Wednesday and Thursday

Persistent northwest flow continues Wednesday and Thursday. This
will support seasonable overnight lows/daytime highs ranging
from the mid 20s to low 30s and upper 30s to low 40s respectively.
There is considerable spread beyond Thursday, but the ECMWF is
resolving a robust low pressure over The Northeast at the end of
the week while the GFS resolves quiet weather. Stay tuned as
more details become available by late weekend/early next week.

&&

.AVIATION /07Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels:

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

Today...High Confidence.

VFR. North winds shift to east by mid afternoon.

Tonight and Saturday...High confidence in trends. Moderate
confidence in the timing details, especially for precipitation
types.

VFR to start, then becoming IFR tonight, and continuing into
Saturday. Some improvement to MVFR from SW to NE during the
afternoon.

KBOS Terminal...High confidence on trends, lower confidence on
timing. VFR through the period until very late in the TAF.
MVFR/-SN develops after 03Z Saturday morning.

KBDL Terminal...High confidence on trends, lower on timing. VFR
through much of today. -SN and MVFR cigs to develop late in the
30 hour period, generally after 00Z Saturday.

Outlook /Saturday Night through Tuesday/...

Saturday Night: Mainly VFR, with local MVFR possible. Strong
winds with local gusts up to 40 kt. Slight chance SN.

Sunday: VFR. Breezy.

Sunday Night through Monday: VFR. Windy with local gusts up to
30 kt.

Monday Night: VFR. Breezy. Slight chance SN.

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

&&

.MARINE...
Forecaster Confidence Levels:

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

* Gale Warning in effect for all waters tonight through
  Saturday evening.

Today...High confidence.

Dry. Diminishing northwest winds, becoming light and eventually
turning to the east by late afternoon. Winds less than 10 kts.
Seas falling to 3 to 5 ft.

Tonight into Saturday...High confidence.

Rain, heavy at times with reduced visibility and southeast
gales. Gale Warning in effect for all waters. Possibility for
a period of storm-force gusts Saturday morning across the
eastern MA coastal waters, but not enough confidence to upgrade
to a Storm Warnings at this time.

Outlook /Saturday Night through Tuesday/...

Saturday Night: Low risk for gale force winds with gusts up to
40 kt. Rough seas up to 16 ft. Chance of rain, slight chance of
snow.

Sunday: Winds less than 25 kt. Rough seas up to 10 ft.

Sunday Night: Moderate risk for Small Craft Advisory winds with
local gusts up to 30 kt. Areas of rough seas.

Monday: Moderate risk for Small Craft Advisory winds with local
gusts up to 30 kt. Local rough seas.

Monday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of seas approaching 5 ft. Slight
chance of rain.

Tuesday: Winds less than 25 kt. Chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Saturday for CTZ002>004.
MA...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Saturday for MAZ007-011>015-017.
     Winter Storm Warning from 7 PM this evening to 7 PM EST
     Saturday for MAZ002>006-008>010-026.
     Wind Advisory from 9 AM to 2 PM EST Saturday for MAZ007-019.
     Wind Advisory from 4 AM to 2 PM EST Saturday for MAZ022.
     Wind Advisory from 4 AM to 9 AM EST Saturday for MAZ023-024.
RI...Winter Weather Advisory from 7 PM this evening to 7 PM EST
     Saturday for RIZ001>003.
     Wind Advisory from 4 AM to 9 AM EST Saturday for RIZ008.
MARINE...Gale Warning from 1 AM to 7 PM EST Saturday for ANZ230.
     Gale Warning from 1 AM to 10 PM EST Saturday for ANZ231>234-
     250-251-254.
     Gale Warning from 10 PM this evening to 7 PM EST Saturday for
     ANZ235.
     Gale Warning from 1 AM to 1 PM EST Saturday for ANZ236.
     Gale Warning from 10 PM this evening to 1 PM EST Saturday for
     ANZ237.
     Gale Warning from 10 PM this evening to 10 PM EST Saturday for
     ANZ255-256.

&&

SYNOPSIS...Belk/RM
NEAR TERM...Belk
SHORT TERM...Belk
LONG TERM...RM
AVIATION...Belk/RM
MARINE...Belk/RM
Hazardous weather outlook, Mar 2, 4:08 PM EST, 11 hours 20 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
408 PM EST Thu Mar 2 2023

CTZ002>004-MAZ007-011>024-RIZ001>008-032115-
Hartford CT-Tolland CT-Windham CT-Eastern Essex MA-
Eastern Hampden MA-Southern Worcester 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-Northwest Providence RI-Southeast Providence RI-
Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI-Newport RI-
Block Island RI-
408 PM EST Thu Mar 2 2023

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ002>006-008>010-026-032115-
Western Franklin MA-Eastern Franklin MA-Northern Worcester MA-
Central Middlesex MA-Western Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Northern Middlesex MA-
408 PM EST Thu Mar 2 2023

...WINTER STORM WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY
EVENING...

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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.

ANZ237-032115-
Block Island Sound-
408 PM EST Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 10 PM FRIDAY TO 1 PM EST SATURDAY...

This Hazardous Weather Outlook is for Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ236-032115-
Narragansett Bay-
408 PM EST Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 1 AM TO 1 PM EST SATURDAY...

This Hazardous Weather Outlook is for Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ235-032115-
Rhode Island Sound-
408 PM EST Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 10 PM FRIDAY TO 7 PM EST SATURDAY...

This Hazardous Weather Outlook is for Rhode Island coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ231>234-250-251-254-032115-
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
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-
408 PM EST Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 1 AM TO 10 PM EST SATURDAY...

This Hazardous Weather Outlook is for Massachusetts coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ255-256-032115-
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 Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 10 PM FRIDAY TO 10 PM EST SATURDAY...

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...Friday through Wednesday.

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

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230-032115-
Boston Harbor-
408 PM EST Thu Mar 2 2023

...GALE WARNING IN EFFECT FROM 1 AM TO 7 PM EST SATURDAY...

This Hazardous Weather Outlook is for Massachusetts coastal waters.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

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

   Gale Warning.

.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
Mar 3, 3:27 AM ESTWind AdvisoryBOXBarnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 2 more38 hr
Mar 3, 3:28 AM ESTWinter Weather AdvisoryBOXBristol, Essex, Hampden, Middlesex, Norfolk, Suffolk and 1 more35 hr
Mar 3, 9:33 AM ESTCoastal Flood AdvisoryBOXDukes, Nantucket26 hr
Mar 3, 11:01 AM ESTStorm WarningBOX29 hr
Mar 3, 12:09 PM ESTHigh Wind WarningBOXBarnstable, Essex, Nantucket29 hr

Nearby

Winter Storm Warnings in Massachusetts, 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.