An upper low pressure ejected out of the Southwest and reached the East Coast by the 9th. A strong jet streak exiting the Mid Atlantic coast with a coupled jet to the north helped initiate intense secondary cyclogenesis along the New England coast. Pressures in the center of the storm fell over 30 mb in 24 hours by the time it reached peak intensity near Penobscot Bay on the 10th. This storm spread snow over interior areas with rain at the coast. By the afternoon of the 9th rain flipped to heavy, wet snow generally along a north of a line from the White Mountains to Portland, Maine. As snowfall approached and exceeded 4 inches downed limbs began to cause power outages. Where snow exceeded 6 inches the power outages were significant with  100,000 outages reported.

Winter Storm in INTERIOR CUMBERLAND HIGHLANDS, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the higher terrain of interior Cumberland County during the morning of the 9th as mostly rain at the lower elevations, and some snow in on the peaks. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued moderate to heavy at times into the very early morning hours of the 10th. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 5 to 8 inches.

Winter Storm in ANDROSCOGGIN, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the I-95 corridor during the morning of the 9th as mostly rain at the lower elevations, and some snow mixing in at times in the higher elevations. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain flashed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 7 to 12 inches.

Winter Storm in KENNEBEC, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 07:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the I-95 corridor during the morning of the 9th as mostly rain at the lower elevations, and some snow mixing in at times in the higher elevations. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. As low pressure pulled away a narrow band of snowfall lingered over the area into the morning of the 10th. Snow totals ranged from 7 to 12 inches.

Winter Storm in SAGADAHOC, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the Midcoast during the morning of the 9th as mostly rain. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain quickly changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 3 inches near the coast to 12 inches north of I-295.

Winter Storm in INTERIOR WALDO, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the Midcoast during the morning of the 9th as mostly rain at the lower elevations, and some snow mixing in at times in the higher elevations. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain quickly changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 7 to 12 inches.

Winter Storm in COASTAL WALDO, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the Midcoast during the morning of the 9th as mostly rain. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain quickly changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 10 to 15 inches.

Winter Storm in LINCOLN, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the Midcoast during the morning of the 9th as mostly rain. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain quickly changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 3 inches near Boothbay to 16 inches north of Damariscotta Lake.

Winter Storm in KNOX, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread the Midcoast during the morning of the 9th as mostly rain. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell quickly to the lower 30s. Rain quickly changed to heavy snow, and continued moderate to heavy at times through midnight. Snowfall rates exceeded 1 inch per hour at times. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 5 inches near the coast to 16 inches inland.

Winter Storm in NORTHERN OXFORD, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 07:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread northern Oxford County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued moderate to heavy at times into the very early morning hours of the 10th. As low pressure pulled away significant upslope snow showers continued into the morning of the 10th. Snow totals ranged from 4 inches near Route 2 to as much as 12 inches near Mooselookmeguntic Lake.

Winter Storm in SOUTHERN OXFORD, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread southern Oxford County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued moderate to heavy at times into the very early morning hours of the 10th. Snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 2 inches near Fryeburg to 10 inches near Rumford.

Winter Storm in NORTHERN FRANKLIN, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 07:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread northern Franklin County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued into the very early morning hours of the 10th heavy at times as a band set up over the area. As low pressure pulled away significant upslope snow showers continued into the morning of the 10th. Snow totals ranged from 12 to 16 inches, with locally up to 20 inches in the Rangeley-Stratton range.

Winter Storm in SOUTHERN FRANKLIN, MAINE
From 09-APR-20 11:00:00 to 10-APR-20 07:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread southern Franklin County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued into the very early morning hours of the 10th heavy at times as a band set up over the area. As low pressure pulled away a narrow band of snowfall lingered over the area into the morning of the 10th. Snow totals ranged from 6 to 10 inches.

Winter Storm in CENTRAL SOMERSET, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread central Somerset County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued into the very early morning hours of the 10th heavy at times as a band set up over the area. As low pressure pulled away snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 12 to 18 inches.

Winter Storm in SOUTHERN SOMERSET, MAINE
From 09-APR-20 12:00:00 to 10-APR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation overspread southern Somerset County during the morning of the 9th as mostly rain at the lower elevations, and some snow in the mountains. Temperatures gradually cooled into the upper 30s, but by late afternoon heavier precipitation moved in, temperatures fell to the lower 30s, and rain changed to snow. Snow continued into the very early morning hours of the 10th heavy at times as a band set up over the area. As low pressure pulled away snow quickly tapered off early on the morning of the 10th. Snow totals ranged from 7 to 12 inches.