Potentially Historic Winter Storm Update One?
000
FXUS61 KCAR 130249
AFDCAR
Area Forecast Discussion
National Weather Service Caribou ME
949 PM EST Wed Jan 12 2022
.SYNOPSIS...
A cold front will slowly approach from Quebec through Thursday
then cross the area Thursday night through early Friday. Strong
low pressure will track east of the region later Friday through
Saturday. High pressure will cross the region Sunday. Low
pressure will impact the region Monday, though the track remains
uncertain.
&&.....
.....SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
An arctic cold front will cross the region Thursday night through
early Friday with snow showers along the front. The front will exit
across the Maritimes early Friday while an intensifying ocean low
tracks north along the front. The low will track southeast of the
Gulf of Maine toward the eastern Maritimes later Friday through
Friday night, though the exact track is still uncertain. A more
western track could allow the western edge of the snow shield to
back across Downeast areas, particularly Washington county with
accumulating snow expected along with blowing and drifting snow. A
more eastern track would diminish potential impacts and snow
accumulations. Acoss northern areas Friday, expect mostly cloudy
skies along with a chance of snow showers in the morning then partly
sunny with a slight chance of snow showers in the afternoon. Gusty
north/northwest winds will also develop later Friday with the
tightening pressure gradient between the intensifying Maritimes low
and high pressure centered north of the Great lakes. The strong low
lifts across the eastern Maritimes Friday night, with high pressure
centered across the northern Great Lakes. Any snow should diminish
across Downeast areas early Friday night, with decreasing clouds
overnight. Could have a slight chance of snow showers across
northern areas early Friday night, with decreasing clouds overnight.
The strong low will lift across the Gulf of Saint Lawrence Saturday
while high pressure builds toward New England. The tight pressure
gradient between the Maritimes low and high pressure to the west
will keep gusty north/northwest winds across the region Saturday.
With the very cold temperatures and gusty winds, expect wind chills
will be a concern Friday night through Saturday with wind chill
warnings/advisories needed. Otherwise, expect mostly sunny
skies Saturday. Temperatures will fall through Friday in the
wake of the cold front. High temperatures Saturday are expected
to only range from the single digits below zero north, to the
single digits above zero Downeast.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
High pressure will build toward the region Saturday night with
mostly clear skies and diminishing winds. High pressure will cross
the region Sunday while low pressure intensifies across the
Mid-Atlantic region. Expect mostly sunny skies Sunday, with
increasing clouds Sunday night. Could also have a chance of snow
later Sunday night mostly Downeast. The intensifying low will
lift north Monday, though significant differences in the track
still exist. Track solutions vary from well west of the region,
to across the region, to offshore east of the region.
Precipitation types and amounts, along with temperatures,
Monday will be dependent on the eventual track. The low will
exit northeast of the region Tuesday, with precipitation
diminishing. High pressure should build across the region later
Tuesday through early Wednesday. A clipper system could then
bring another chance of snow or snow showers later Wednesday.
Temperatures will be at much below normal levels Sunday.
Temperatures Monday/Tuesday will be dependent on the eventual
track of low pressure. Below normal level temperatures are
expected Wednesday......