Interior Light Icing:
Locations: East slopes of the Berkshires and CT River valley in MA.
Timing: Spotty freezing drizzle and/or very light freezing rain developing during precipitation onset. Changeover to rain by midnight.
Amounts: Trace amounts to a couple hundredths of an inch resulting in a light, thin glaze of ice.
Impact: Slick roads impacting Friday night's travel.
Confidence: Low. Coverage of freezing drizzle and light freezing rain will be spotty/patchy.
Heavy Rain:
Locations: All locations.
Timing: Late Friday night into Saturday evening. Heaviest between Saturday morning and afternoon.
Amounts: 0.75 to 1.5 inches in Western MA and CT. 1 to 2 inches in Eastern MA and RI.
Impact: Combination of snowmelt and heavy rain could result in localized flooding, especially in areas with poor drainage.
Confidence: High.
A storm total rainfall graphic is attached.