Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Caribou ME
417 PM EDT Tuesday Sep 1 2015
high pressure will move southeast of the area tonight. A cold
front will approach later Wednesday...then cross the region
Wednesday night. High pressure will build across the area
Thursday through Friday.
Near term /through Wednesday/...
high pressure will move southeast of the region tonight...with a
warm front crossing the region overnight. Skies will be mostly
clear across the forecast area tonight. An upper level disturbance
will cross northern Maine Wednesday afternoon in advance of a cold
front which will approach northern Maine late. Scattered showers
and thunderstorms will develop across northern Maine during the
late morning and early afternoon hours Wednesday...then persist
through the duration of the afternoon. Mostly sunny skies are
expected across central and downeast portions of the forecast
area Wednesday morning...with partly/mostly sunny skies during
the afternoon. Low temperatures tonight will range from the middle
to upper 50s across the forecast area. High temperatures Wednesday
will range from the lower to middle 80s north and along the downeast
coast...with middle to upper 80s across the remainder of the forecast
Short term /Wednesday night through Friday/...
a cold front slides through eastern Maine Wednesday night into
Thursday. There will be a chance of evening showers and
thunderstorms with this frontal passage.
Noticeably cooler and drier air settles into the region Thursday
into Friday with a touch of autumn. Highs will only be in the 60s
to lower 70s on Friday with a chilly start Friday morning with lows
in the 40s north and 50s downeast.
Long term /Friday night through Tuesday/...
a strong upper level ridge will build into the northeast over Labor
Day weekend bringing a stretch of very warm Summer weather. High
pressure at the surface will crest over the region Friday night
bringing a calm, cool night with some patchy valley fog possible
after midnight. The high will sink south of the region on Saturday.
After a cool morning, a return flow behind the high will boost
temperatures to middle Summer norms across the area with plenty of
sunshine. Saturday night will be clear and mild then Sunday will be
even warmer with sunshine as the upper level ridge builds over. The
strong upper high will remain anchored across New England Sunday
night into Monday bringing a mild night Sunday night followed by
another very warm and sunny day on Labor Day. The very warm
weather will continue into Tuesday. However, a strong cold front
approaching late in the day may bring some showers or a
thunderstorm to northern areas as it moves in at the end of the
Aviation /20z Tuesday through Sunday/...
near term: VFR conditions are expected across the entire region
tonight into Wednesday morning. Variable conditions will then
occur across northern areas Wednesday afternoon with any showers
or thunderstorms. VFR conditions will persist downeast Wednesday
Short term: MVFR ceilings and visibilities will be possible on Wednesday
evening across the northern taf sites /fve car pqi hul / in
showers and thunderstorms. Patchy valley fog may briefly result in
MVFR or IFR conditions early Sat morning. Otherwise, VFR
conditions are expected through the weekend.
near term: winds/seas will remain below Small Craft Advisory
levels tonight through Wednesday.
Short term: no headlines are expected during this time period.