❰ Current Conditions

Winter Weather Advisory
Winter Weather Advisory issued December 16 at 3:44AM EST until December 17 at 1:00PM EST by NWS Boston/Norton MA

WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 1 PM EST TUESDAY

* WHAT...Mixed precipitation expected. Total snow accumulations of 1 to 3 inches and ice accumulations of a light glaze.

* WHERE...Mainly along and southeast of the Boston to Providence corridor.

* WHEN...From 1 AM to 1 PM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the morning commute.

* ADDITIONAL DETAILS...Moderate to heavy snow is expected to be in progress during the start of the Tuesday morning commute near and especially south of the Massachusetts turnpike. The precipitation will transition to a brief period of sleet and freezing rain during the morning before a transition to all rain.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...Slow down and use caution while traveling.
Fire Weather Discussion

Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
359 AM EST Mon Dec 16 2019

.DISCUSSION...

High pressure provides dry conditions today, though clouds will 
increase through the day. Low pressure will bring light snow 
from south to north early tonight, then will become a wintry 
mix along the south coast toward daybreak as milder air works 
in aloft. The low will push south of the region on Tuesday, 
with the wintry mix moving across most areas by midday, though 
there will be a chance to rain along the immediate coast. As the 
low moves offshore late Tue into Tue evening, the precipitation 
changes back to snow across most areas before moving offshore by 
around midnight or so.

Outlook...Wednesday through Friday...

A weak system will move across northern New England on Wednesday 
and an associated arctic front. There will be a round of 
scattered show showers, with the best chance across the east 
slopes of the Berkshires and along the coast before ending 
Thursday evening, though could linger on the mid and outer Cape 
and the islands through around midnight. Expect dry but very cold
and blustery conditions in place on Thursday. High pressure 
shifts slowly east on Friday with dry conditions and continued 
cold temperatures.

Southeast Middlesex MA-
Including the cities of Cambridge, Lexington, Newton, Waltham, 
and Woburn
359 AM EST Mon Dec 16 2019

                      Today        Tonight      Tue          

Cloud cover           Pcldy        Mcldy        Cloudy       
Precip type           None         Snow         Snow/rain    
Chance precip (%)     0            80           100          
Temp (24h trend)      35 (-9)      26 (+1)      33           
RH % (24h trend)      41 (+11)     88 (+9)      85           
20ft Wnd AM(mph)      W  6                      Lgt/Var      
20ft Wnd PM(mph)      W  5         Lgt/Var      Lgt/Var      
Precip amount         0.00         0.03         0.42         
Precip duration                    2            12           
Precip begin                       2 AM         Continuing   
Precip end                         Continuing   Continuing   
Mixing hgt (ft-AGL)   2860         120          1140         
Transport wnd (kts)   W 14         SW  3        NE 14        
Vent rate (kt-ft)     40040        360          15960        
ADI early             43 Gen Good  4 Very Poor  15 Gen Poor  
ADI late              35 Fair      2 Very Poor  19 Gen Poor  
Max LVORI early       3            3            6            
Max LVORI late        2            5            6            
CWR                   0            20           100          
LAL                   No Tstms     No Tstms     No Tstms     
Haines Index          4            4            2            

REMARKS...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY NIGHT...Mostly cloudy with snow likely. Lows in the mid
20s. Northwest winds around 5 mph. 
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Lows around 12.
Highs in the mid 30s. Northwest winds 10 to 15 mph. 
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Colder. Lows around
12. Highs in the lower 20s. Northwest winds 5 to 10 mph. 
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Lows around 15. Highs in
the upper 20s. Northwest winds around 5 mph. 
.SATURDAY...Mostly sunny. Highs in the lower 30s. West winds
around 5 mph, becoming southwest in the afternoon. 
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy. Lows in the mid 20s.
Highs around 40. West winds around 5 mph.