Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Caribou ME
248 PM EDT Thursday Jul 31 2014
a shortwave moving through this evening will continue north of
the area tonight. High pressure will remain to our southeast
Friday and Saturday as an upper level low over eastern Canada
lifts away to the northeast.
Near term /through Friday/...
showers and thunderstorms across the north and west will dissipate
this evening as a shortwave lifting north of the state continues
up into Quebec. This will give way to a clear to partly cloudy
night with some patchy fog late. Friday will be sunny to partly
cloudy. Some fog may persist along coastal areas due to moisture
moving north over the colder waters. Humid air continuing to
advect into the area on a southwesterly breeze combined with some
lower heights from upper level low pressure to our northwest may
be enough to spawn a few thundershowers across central and
northern areas Friday afternoon. Otherwise, most of the day will
be rain free. Temperatures tonight and Friday are expected to be near
seasonal norms for the first of August.
Short term /Friday night through Sunday/...
surface high pressure will remain to our east through the period.
A weak and rather moist southwest flow around the high combined
with weak upper level disturbances moving through the flow will
result in the chance for an afternoon shower or thunderstorm
especially across western areas both Saturday and Sunday.
Otherwise expect partly sunny skies during the day time hours and
partly to mostly cloudy skies at night through the period. There
could also be some patchy fog developing at night especially
across downeast areas. Highs both Friday and Saturday will be in
the middle 70s to near 80 north except only near 70 along the coast.
Night time lows will be in the upper 50s to near 60.
Long term /Sunday night through Thursday/...
northern Maine will be under the influence of a broad upper level
trough to start next week. Disturbances moving through the flow
will bring mainly diurnal showers to the region Monday through
Wednesday. The upper trough amplifies across the Maritimes and
eastern New England by middle week...however drier air moves into the
region. Temperatures will be at or slightly below seasonal norms for
Aviation /18z Thursday through Tuesday/...
near term: mainly VFR conditions are expected tonight and Friday.
Coastal fog may stray into Bar Harbor at times lowering conditions
to IFR. Patchy fog late tonight and early Friday morning may also
lower some inland sites to IFR for a few hours.
Short term: generally VFR conditions expected except MVFR/IFR is
possible in late night and early morning fog mainly downeast terminals.
near term: winds and seas are expected to remain below Small Craft Advisory today
and tonight. Fog will likely continue to reduce visibilities.
Short term: winds/seas should remain below Small Craft Advisory
levels through the period. Visibility will be reduced in patchy
night time and early morning fog.