Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Gray ME
1008 am EDT Friday Sep 4 2015
high pressure will build south from Canada through Saturday, then
move offshore Saturday night. This high will provide the region
with a respite in the heat and humidity at least for a little
while. However...the heat and humidity will return Sunday as the
high anchors off the coast. July-like weather is expected Monday
into Wednesday. A slow-moving cold front will cross the area
Thursday into Friday with showers and thunderstorms.
Near term /until 6 PM this evening/...
10 am update: very quiet day under building high pressure. Input
latest observation data with no changes needed at this time.
627 am...minor estf update to reflect the current mesonet in first
high pressure will build southward into Maine and New Hampshire
today providing the region with cooler and drier weather than what
we experienced the last couple of days. Any early morning clouds
and isolated showers should come to an end by 12z this morning.
Thereafter...plenty of sunshine is expected with highs in the 70s
along with dry dewpoint values.
Short term /6 PM this evening through 6 PM Saturday/...
high pressure Will Park overhead tonight and Saturday. Good
radiational cooling conditions will be present tonight and result
in lows in the 40s at locations that normally radiate well. This
will also result in locally dense valley fog. Sunny skies will be
the rule on Saturday along with temperatures around 80 at most
Long term /Saturday night through Thursday/...
the models are in general agreement on the long wave pattern
well into next week. Ridging surface and aloft will provide the
forecast area with summertime heat and humidity through middle
week...before a shortwave impulse drives a strong cold front
across the region Thursday. Cooler and drier air will gradually
filter into the area during Friday and the upcoming weekend.
Aviation /14z Friday through Tuesday/...
short term...VFR conditions are expected today through Saturday.
However...local IFR conditions in River Valley fog will occur in
river valleys late at night Friday night and early Saturday
Monday am...local IFR possible in valley stratus and fog.
Tuesday am...local IFR possible in valley stratus and fog.
short term...Small Craft Advisory has been allowed to expire. Winds and seas
continue to diminish as high pressure begins to crest over the
region. No flags are anticipated tonight through Saturday.
Sun...winds and seas could approach small craft outside the bays.
Monday - Tuesday...small craft winds and seas are possible.
some higher seas across southernmost coastal areas has increased
the risk of rip currents to moderate levels for the rest of today.