❰ Current Conditions

Fire Weather Discussion

Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
420 PM EST Mon Jan 25 2021

.DISCUSSION... 

High pressure over New England provides dry weather and light winds 
tonight and Tuesday morning. Then low pressure tracks south of New 
England Tuesday afternoon and night, resulting in light snow 
overspreading the region with possible snow accumulations of 1 to 3 
inches, highest amounts across western MA/CT. 

Minimum relative humidities Tuesday will range from the 50 to 60 
percent. 

OUTLOOK...Wednesday through Sunday. 

Other than scattered snow showers/flurries, mainly dry and 
seasonably cold weather prevails Wed and Thu. An arctic front blast 
across the region Friday, with frigid and blustery weather lingering 
into Saturday, before moderating Sunday.

Southeast Middlesex MA-
Including the cities of Cambridge, Lexington, Newton, Waltham, 
and Woburn
420 PM EST Mon Jan 25 2021

                      Tonight      Tue          Tue Night    Wed          

Cloud Cover           Mclear       Pcldy        Cloudy       Mcldy        
Precip Type           None         Snow         Snow         Snow         
Chance Precip (%)     0            30           70           50           
Temp (24h trend)      15 (-2)      33 (-1)      27           36           
RH % (24h trend)      96 (+34)     53 (+28)     100          79           
20ft Wnd AM(mph)                   Lgt/Var                   Lgt/Var      
20ft Wnd PM(mph)      NW  5        Lgt/Var      Lgt/Var      Lgt/Var      
Precip Amount         0.00         0.01         0.14         0.06         
Precip Duration                    1            7            2            
Precip Begin                       2 PM         Continuing   Continuing   
Precip End                         Continuing   Continuing   Continuing   
Mixing Hgt (ft-AGL)   240          2540         380          1210         
Transport Wnd (kts)   NW  4        E  7         NE  7        NE  7        
Vent Rate (kt-ft)     960          17780        2660         8470         
ADI early             9 Poor       12 Poor      5 Very Poor  9 Poor       
ADI late              4 Very Poor  17 Gen Poor  7 Poor       9 Poor       
Max LVORI early       3            5            7            8            
Max LVORI late        4            3            8            5            
CWR                   0            10           30           20           
LAL                   No Tstms     No Tstms     No Tstms     No Tstms     
Haines Index          4            4            2            3            

REMARKS...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Cloudy with a chance of snow. Lows around 30.
North winds around 5 mph. 
.THURSDAY...Mostly cloudy with a chance of snow showers. Highs in
the mid 30s. North winds 5 to 10 mph. 
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Colder. Lows around
12. Highs in the lower 20s. Northwest winds 10 to 15 mph. 
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows around
11. Highs in the mid 20s. Northwest winds 5 to 10 mph. 
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. A chance of snow
showers. Lows in the lower 20s. Highs in the lower 30s. Northeast
winds around 5 mph. 
.MONDAY...Cloudy with a chance of snow and rain showers. Highs in
the upper 30s. Northeast winds 5 to 10 mph.