Area Forecast Discussion
Issued by NWS Portland, ME

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924
FXUS61 KGYX 231914
AFDGYX

Area Forecast Discussion
National Weather Service Gray ME
314 PM EDT TUE AUG 23 2016

.SYNOPSIS...
Cool high pressure will build over the area tonight and will move
offshore into the Atlantic Wednesday, with warmer temperatures
arriving on southwesterly winds. The warm weather will continue
Thursday into Friday when a cold front moves through. There will
be a chance of showers and possible thunderstorms as the front
moves through, otherwise, expect drier and slightly cooler
conditions are expected for the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
High pressure will be firmly in control tonight...with the surface
ridge axis more or less over the top of the forecast area. This
will allow temps to quickly drop off after dark. Given the recent
rnfl...valley fog should develop is most of the favored locations
tonight. Will have to watch for some patchy dense fog is the
larger valleys...especially the CT River. Temps will be
comfortable...but not as cool as last night.

&&

.SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/...
Surface ridge axis will be E of the forecast area Wed...allowing
return flow to set up. Temps will be warmer...with readings
approaching 90 across Srn NH. Increasing high clouds and rising
temps Wed night should prevent widespread valley fog from
developing.

&&

.LONG TERM /THURSDAY THROUGH TUESDAY/...
A warm front will push northeast during the day Thursday with the
greatest threat of precipitation across the mountains. A cold
front will approach the region Thursday night and cross the region
Friday. Again, the greatest threat of significant showers and
possible thunderstorms will be in the mountains. Timing of front
may be critical to any thunderstorm development. Temps Thursday
and Friday will reach the upper 80s across southern NH and sw
Maine.

High pressure will build into the area behind the front for
Saturday into Sunday with cooler temperatures. Another warm front
will push back through the region Sunday night and Monday
bringing the threat of showers. Fair and mild weather is expected
behind the front early next week.



&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
Short Term...VFR conditions will prevail thru Wed night. High
pressure in control tonight will promote patchy fog in typical
locations. Expect LEB and HIE to see LIFR conditions again
tonight...and I followed persistence timing at those terminals.
Otherwise I do not anticipate any widespread issues with fog at
the Srn NH and coastal Wrn ME terminals.

Long Term...Mainly vfr conditions expected with scattered mvfr to
ifr conditions possible in showers and possible thunderstorms
Thursday into Friday.

&&

.MARINE...
Short Term...Winds and seas will remain below SCA thresholds.

Long Term...SCA conditions for seas possible Thursday night into
Friday night...otherwise winds and seas expected to be below SCA
criteria.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...None.

&&

$$

NEAR TERM...Legro
SHORT TERM...Legro
LONG TERM...Jensenius



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