Woburn Weather Center  21.8°F

Area Forecast Discussion
National Weather Service Boston/Norton MA
1220 AM EST Tue Dec 3 2024

SYNOPSIS

Mainly sunny and dry weather is expected through Tuesday,
although a cold airmass will continue to yield below normal
temperatures and periods of ocean effect cloudiness for the
Cape and Islands. Next chance for precipitation comes Wednesday
night into Thursday, as a clipper system brings rain near the
coast and accumulating snowfall in the interior. An colder
airmass moves in Friday and into the weekend, likely with the
coldest air of the season thus far.

.NEAR TERM /UNTIL 6 AM THIS MORNING/...

Sct-bkn strato-cu lingering across portions of SNE but these
clouds are expected to clear tonight. Otherwise, ocean effect
strato-cu developing over the ocean north of Cape Cod and these
clouds expected to fill in across the outer Cape and Nantucket
through the night. Otherwise, a mainly clear night with light
WNW winds becoming near calm overnight. This means another very
chilly night is in store with strong radiational cooling
expected. With little change in thermal airmass, largely used
persistence as a basis for tonight`s lows. The lone exception is
across the Mid-Cape and Outer Cape where an increasing coverage
of ocean effect stratocumulus and modest NW breeze should limit
radiational cooling and bring lows closer to the mid/upper 20s.
The larger metro cities should stay in the lower 20s but most
areas elsewhere should dip into the teens.

.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM WEDNESDAY/...
120 PM Update:

Little change in the governing synoptic regime for Tues, with
high pressure to our south supplying continued dry weather and a
light westerly wind. The shift in the winds to more of a
westerly flow, a less favorable direction for ocean effect over
land, should in turn shut off ocean effect cloudiness over the
Outer Cape early in the day. Thus mostly clear skies but still a
rather chilly and dry day with highs in the 30s, but may
struggle to reach the freezing mark over the higher terrain of
the Berkshires and hills in Worcester and Tolland Counties.

For Tues night, modest change takes place with 500 mb longwave
trough axis and associated 925-850 mb thermal trough moving
eastward and offshore. Although we still expect clear skies and
light winds favoring efficient radiational cooling, we will see
more in the way of lower- tropospheric warm advection. Still
ends up being another rather cold night, and though it may not
necessarily feel much different, lows should be a couple degrees
warmer in the upper teens to the mid 20s.

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
Key Messages...

* Accumulating snowfall likely Wed night into early Thu,
  especially west of I-495 with mainly rain in the coastal
  plain.

* Turning colder Thu night into the weekend with temps well below
  normal

* Strong wind gusts developing Wed night Cape/Islands and late Thu
  into Fri rest of SNE
Wednesday...

Surface ridging moves across SNE then to the east by days end ahead
of next approaching system from the Gt Lakes. Plenty of sunshine to
start the day, then developing warm advection pattern within SW flow
will bring increasing clouds in the afternoon. However, it should
remain dry through the day with precip holding off until evening.
Highs will range from the mid 30s to lower 40s with increasing SW
winds 10-20 mph in the afternoon.

Wednesday night into Thursday...

Deep upper level low dives into the Gt Lakes Wed night before moving
across New Eng on Thu. Diffluent flow aloft Wed night ahead of the
trough with favorable left exit region of the upper jet will provide
strong large scale forcing for ascent. Decent SW low level jet will
bring increasing moisture with saturated column developing through a
deep layer. This will bring a period of widespread precip Wed night
into early Thu with expected QPF amounts of 0.25 to 0.50". The
column is cold enough for snow in the interior west of I-95 with
mostly rain along and SE of I-95, although a rain-snow mix is
possible along the I-95 corridor. Highest snow amounts will be over
higher elevations where temps will be coldest. Preliminary forecast
accums of 3-6 inches is possible over the Berkshires and Worcester
Hills, with 1-3 inches across the rest of the interior. This is line
with ECWMF and GEFS ensembles showing high probs (60-90%) of 3+
inches over the elevated terrain, with high probs (90%+) of 1 inch
across the interior. No snow accums are expected near the coast.
Fortunately, the bulk of the snow will begin after the Wed evening
commute although the morning commute will be impacted.

Best moisture will be lifting out Thu morning so interior snow will
begin to taper off, although scattered rain and higher elevation
snow showers likely to continue as the upper low and arctic front
moves into the region. Clearing Thu night and windy and colder with
lows dropping into the upper teens to mid 20s.

Decent SW low level jet developing Wed night will likely bring a
period of strong wind gusts across the Cape/Islands. Model soundings
suggest potential for a period of 40-50 mph gusts here and wind
advisories may eventually be needed. Then strong W wind gusts will
develop across rest of SNE late Thu and especially Thu night in the
cold advection with marginal wind advisory criteria possible.

Friday through Monday...

Blustery and cold Fri as 850 mb temps bottoming out near -14C. Highs
will range from the upper 20s to mid 30s and the cold conditions
will continue into Sat but with less wind. Another fast moving
northern stream shortwave and clipper may bring some light snow
sometime Sat or Sat night but low confidence on timing. Drying out
Sunday, then next system approaches next Monday with rain or a mix
as milder air will be moving in as southerly flow develops.

.AVIATION /05Z TUESDAY THROUGH SATURDAY/...
Forecast Confidence Levels:

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

06z TAF Update:

Today and tonight: High confidence.

VFR. Light WNW winds early this morning except 5-8 kt for BOS
and the Cape airports. For today, winds become more WNW to W,
then become light W to WSW for tonight.

Wednesday: High confidence.

VFR. Light W winds increase to 5-10 kts becoming SW then S.

KBOS Terminal...High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: MVFR/IFR conditions possible. Windy with gusts
up to 35 kt. SN, RA.

Thursday: Mainly MVFR, with local IFR possible. Windy with
gusts up to 35 kt. Chance SHRA, chance SHSN.

Thursday Night: VFR. Windy with gusts up to 35 kt.

Friday: VFR. Windy with gusts up to 30 kt.

Friday Night: VFR. Breezy.

Saturday: VFR. Breezy. Slight chance SHSN.

.MARINE...
Forecaster Confidence Levels:

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

Generally tranquil winds and sea conditions for boaters through
Tuesday night. WNW to W winds around 10-15 kt thru Tue, then
becoming W/WSW around 15 kt for Tue night. Seas thru Tue night 3
ft or less all waters. Dry weather is expected, although ocean
effect cloudiness over the eastern waters could produce a
sprinkle or flurry over the outer waters.

Outlook /Wednesday Night through Saturday/...

Wednesday: Winds less than 25 kt. Slight chance of rain.

Wednesday Night: Low risk for gale force winds with gusts up to
35 kt. Areas of rough seas. Rain.

Thursday: Moderate risk for gale force winds with gusts up to
40 kt. Rough seas up to 14 ft. Rain showers.

Thursday Night: gale force winds with gusts up to 40 kt. Rough
seas up to 14 ft. Slight chance of rain showers.

Friday: Strong winds with gusts up to 35 kt. Rough seas up to
11 ft.

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

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of rain showers, slight chance of snow
showers.

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Gale Watch from Wednesday evening through Thursday evening for
     ANZ232>235-237-255-256.

SYNOPSIS...KJC/Loconto
NEAR TERM...KJC/Loconto
SHORT TERM...Loconto
LONG TERM...KJC
AVIATION...KJC/BW
MARINE...KJC/Loconto          

Zone Forecast Product for Southern New England
National Weather Service Boston/Norton MA
103 AM EST Tue Dec 3 2024

Forecast Synopsis
Mainly sunny and dry weather is expected through Tuesday,
although a cold airmass will continue to yield below normal
temperatures and periods of ocean effect cloudiness for the
Cape and Islands. Next chance for precipitation comes Wednesday
night into Thursday, as a clipper system brings rain near the
coast and accumulating snowfall in the interior. An colder
airmass moves in Friday and into the weekend, likely with the
coldest air of the season thus far.

Southeast Middlesex MA-
Including the city of Cambridge
103 AM EST Tue Dec 3 2024

.REST OF TONIGHT...Clear. Near steady temperature in the lower
20s. Northwest winds around 5 mph.
.TUESDAY...Sunny. Highs in the upper 30s. Northwest winds 5 to
10 mph.
.TUESDAY NIGHT...Mostly clear. Lows in the lower 20s. West winds
around 5 mph.
.WEDNESDAY...Mostly sunny. Highs around 40. Southwest winds 5 to
10 mph.
.WEDNESDAY NIGHT...Rain and snow. Little or no snow accumulation.
Not as cool. Near steady temperature in the mid 30s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.THURSDAY...Rain showers likely. Highs in the lower 40s. Chance
of rain 70 percent.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows in the mid 20s.
Highs in the lower 30s.
.FRIDAY NIGHT...Mostly clear. Lows around 20.
.SATURDAY...Mostly sunny. Highs in the mid 30s.
.SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of snow
showers. Lows in the lower 20s.
.SUNDAY...Mostly sunny. Highs in the upper 30s.
.SUNDAY NIGHT...Mostly cloudy. Near steady temperature around 30.
.MONDAY...Partly sunny with a chance of rain. Highs in the lower
40s. Chance of rain 30 percent.          

REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
200 AM EST TUE DEC 03 2024

NOTE:  "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

MAZALL-030800-
EASTERN MASSACHUSETTS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BOSTON         MOCLDY    30  18  60 W7        30.14R WCI  23
BEVERLY        CLEAR     24  17  74 W3        30.12R
LAWRENCE       CLEAR     25  18  74 W3        30.14R
BEDFORD        PTCLDY    23  17  78 W3        30.12R
NORWOOD        CLEAR     19  12  74 CALM      30.14R
MARSHFIELD     PTCLDY    25  18  74 W5        30.13R WCI  19
PLYMOUTH       CLEAR     19  15  84 CALM      30.12R
TAUNTON        CLEAR     17  12  80 CALM      30.13R
NEW BEDFORD    CLEAR     20  15  81 CALM      30.14R


MAZALL-030800-
CAPE COD AND THE ISLANDS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
FALMOUTH       CLEAR     23  18  80 NW6       30.13S WCI  16
HYANNIS        MOCLDY    31  20  63 W6        30.10R WCI  25
CHATHAM        PTCLDY    34  17  50 VRB3      30.11R
PROVINCETOWN   MOCLDY    34  22  61 NW13      30.12R WCI  25
NANTUCKET      CLEAR     34  21  59 MISG      30.11R
MARTHAS VNYRD  CLEAR     25  16  68 N5        30.13R WCI  19


MAZALL-030800-
CENTRAL AND WESTERN MASSACHUSETTS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
WORCESTER      CLEAR     23  15  71 W7        30.08R WCI  15
FITCHBURG      CLEAR     20  16  84 CALM      30.13R
ORANGE         MOCLDY    18  16  92 CALM      30.13R
SPRINGFIELD    CLEAR     18  14  86 CALM      30.12R
WESTFIELD      CLEAR     18  14  84 CALM      30.15R
NORTH ADAMS    CLOUDY    26  19  74 W6        30.13R WCI  19
PITTSFIELD     CLEAR     19  15  84 W7        30.09R WCI  10


RIZALL-030800-
RHODE ISLAND

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PROVIDENCE     CLEAR     23  18  81 W5        30.15R WCI  17
NEWPORT        CLEAR     30  19  63 N3        30.14R
BLOCK ISLAND   CLEAR     31  22  69 NW9       30.15R WCI  23
SMITHFIELD     CLEAR     23  17  78 CALM      30.13R
WESTERLY       CLEAR     21  15  78 CALM      30.16R


CTZALL-030800-
CONNECTICUT

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BRADLEY INTL   CLEAR     26  18  71 W6        30.16R WCI  19
HARTFORD       CLEAR     22  18  85 SE3       30.17R
PLAINVILLE     SUNNY     19  18  96 CALM      30.16R
BRIDGEPORT     PTCLDY    25  18  74 NW6       30.18R WCI  18
DANBURY        PTCLDY    20  15  81 CALM      30.17R
GROTON         CLEAR     20  17  88 N5        30.16  WCI  13
NEW HAVEN      PTCLDY    31  21  66 NW6       30.17R WCI  25
CHESTER        CLEAR     25  18  74 CALM      30.15R
MERIDEN        CLEAR     28  17  63 NW6       30.17R WCI  22
WILLIMANTIC    CLEAR     16  14  92 NE3       30.15R
OXFORD         PTCLDY    21  16  81 CALM      30.15R


MEZ002-015-021-024-NHZ003-005-008-011-012-014-VTZ005-008-030800-
NORTHERN NEW ENGLAND

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PORTLAND ME    CLEAR     21  16  81 CALM      30.12R
BANGOR ME      CLEAR     25  17  72 W6        30.07R WCI  18
CONCORD NH     CLOUDY    28  19  69 NW3       30.11R
MANCHESTER NH  CLOUDY    29  20  69 VRB3      30.11R
NASHUA NH      CLOUDY    24  20  84 NW5       30.15R WCI  18
PORTSMOUTH NH  CLEAR     25  19  75 W3        30.11R
JAFFREY NH     CLOUDY    21  18  88 S3        30.08R
KEENE NH       CLOUDY    20  19  96 CALM      30.13R
BURLINGTON VT  CLOUDY    31  20  63 W6        30.12S WCI  25
MT. WASHINGTON SNOW       3   3 100 NW35        N/A  VSB 0   WCI -23


NYZ052-076-030800-
EASTERN NEW YORK

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALBANY         PTCLDY    20  15  81 CALM      30.17R
NEW YORK CITY  MOCLDY    35  20  54 NW10      30.19R WCI  27


ANZALL-030800-
MARINE OBSERVATIONS

STATION/POSITION TIME  TEMP    WIND        PRES    VSBY  WAVE
                       AIR SEA DIR/SP/G                  HT/PER
                 (UTC) (F)     (DEG/KT/KT) (MB)    (MI)  (FT/S)
BOSTON BUOY      0650   35 50  340/ 14/ 17 1020.1R         3/ 3
BUZZARDS BAY     0600   34     340/ 10/ 11 1020.6R
NANTUCKET SOUND  0650   36 45  310/ 16/ 19 1019.3R         2/ 3
MASS BAY-STELLWA 0504   33     320/ 14/ 17 1018.6F  1 7/8  2/ 5
ISLE OF SHOALS   0600   31     310/ 12/ 15 1019.0F
S OF BLOCK IS    0656      56                N/A           3/ 4


......................KEY.........................
  SKY/WX - SKY CONDITION/PRESENT WEATHER
  TMP    - TEMPERATURE IN FAHRENHEIT
  DWPT   - DEWPOINT IN FAHRENHEIT
  RH     - RELATIVE HUMIDITY IN PERCENT
  WIND   - DIRECTION AND SPEED IN MPH
  PRES   - MEAN SEA LEVEL PRESSURE IN INCHES OF HG
  WCI    - WIND CHILL INDEX
  VSB    - VISIBILITY IN MILES
  HX     - HEAT INDEX
  TC     - TEMPERATURE IN CELSIUS
  VRB    - VARIABLE WIND DIRECTION
  N/A    - NOT AVAILABLE          

Max/Min Temperature and Precipitation Table for
Most of Southern New England
National Weather Service Boston/Norton MA
720 PM EST Mon Dec 2 2024

This is an automated product. These data are preliminary and have not
undergone final quality control by the National Climatic Data Center
(NCDC). Therefore, these data are subject to revision. Final and
certified climate data can be accessed at www.ncdc.noaa.gov.


Values represent lows over the last 18 hours,
highs over the last 18 hours and precipitation over the
last 24 hours.

.BR BOX 1202 ES DH19/TAIRZS/TAIRZI/PPDRZZ
                          Max       Min       24 Hour
ID    Location            Temp      Temp    Precipitation

Eastern Massachusetts...
BED   Bedford             38   /    16   /    0.00
BVY   Beverly             38   /    21   /    0.00
BOS   Boston              39   /    26   /    0.00
LWM   Lawrence            37   /    20   /    0.00
EWB   New Bedford         40   /    17   /    0.00
OWD   Norwood             41   /    15   /    0.00
PYM   Plymouth            40   /    17   /    0.00
GHG   Marshfield          39   /    23   /

Cape Cod and the Islands...
CQX   Chatham             40   /    26   /    0.00
HYA   Hyannis             38   /    25   /    0.00
MVY   Marthas Vineyard    39   /    18   /    0.00
ACK   Nantucket           40   /    30   /    0.00
FMH   Falmouth            37   /    25   /
PVC   Provincetown        38   /    32   /

Central and Western Massachusetts...
FIT   Fitchburg           39   /    17   /    0.00
ORE   Orange              37   /     9   /    0.00
CEF   Springfield         40   /    14   /    0.00
BAF   Westfield           39   /    13   /    0.00
ORH   Worcester           36   /    23   /    0.00

Rhode Island...
BID   Block Island        38   /    30   /
SFZ   Smithfield          38   /    20   /
UUU   Newport             40   /    27   /    0.00
PVD   Providence          40   /    22   /    0.00
WST   Westerly            39   /    17   /    0.00

Northern Connecticut...
BDL   Hartford-Bradley    42   /    19   /    0.00
HFD   Hartford            41   /    20   /    0.00
IJD   Willimantic         38   /    13   /    0.00