Several weak areas of low pressure tracked across Downeast Maine along a nearly stationary frontal boundary through the 21st into the 22nd. Precipitation began during the afternoon of the 21st then continued into the afternoon of the 22nd. Across east-central and interior Downeast areas precipitation was mostly in the form of sleet and  freezing rain. Through the afternoon of the 22nd total precipitation in these areas generally ranged from 1 to 3 inches of sleet along with .10 to .50 inch of ice. During this same time...precipitation along the Downeast coast was mostly in the form of freezing rain with ice accumulations of .25 to .50 inch. Warnings verified through the morning into the early afternoon hours of the 22nd. This was the first portion of a major icing event across Downeast Maine.
Power outages began to develop during the overnight hours of the 21st into the morning of the 22nd. Power outages during the first portion of the event peaked at around 20000 customers early on the 22nd...but had fallen to around 8000 later on the 22nd.  The most extensive power outages during this first portion of the event were across coastal areas of Hancock and Washington counties. Numerous snapped branches and ice weighted trees making contact with power lines contributed to power outages. The power outages and damage to trees became much more extensive during the second portion of the event.
The final in the series of weak lows drew the frontal boundary southward across the Gulf of Maine during the afternoon of the 22nd which helped reinforce the low level cold air. Precipitation generally tapered to freezing drizzle in the wake of the final low which persisted through the evening. However...this set the stage for the second portion of the event which occurred from the overnight hours of the 22nd through the 23rd when a stronger low moved across the Gulf of Maine along the frontal boundary. This low brought additional significant freezing rain to Downeast areas. The second portion of the event is addressed in greater detail in a seperate write-up. The overall combined impacts of both events are adressed in greater detail with the write-up for the second portion of the event.

Winter Storm in CENTRAL PENOBSCOT, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Winter Storm in SOUTHERN PISCATAQUIS, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Winter Storm in SOUTHERN PENOBSCOT, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Winter Storm in CENTRAL WASHINGTON, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a quarter to a half inch.

Winter Storm in NORTHERN WASHINGTON, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Winter Storm in CENTRAL PISCATAQUIS, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Winter Storm in INTERIOR HANCOCK, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total sleet accumulations ranged from 1 to 3 inches. Storm total ice accumulations ranged from a tenth to a quarter of an inch.

Ice Storm in COASTAL WASHINGTON, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total ice accumulations ranged from a quarter to a half inch.

Ice Storm in COASTAL HANCOCK, MAINE
From 21-DEC-13 12:00:00 to 22-DEC-13 15:00:00 (EST-5)
Reported by: Trained Spotter

Storm total ice accumulations ranged from a quarter to a half inch.