Area Forecast Discussion
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FXUS61 KGYX 230644
Area Forecast Discussion
National Weather Service Gray ME
244 AM EDT TUE AUG 23 2016
Cool high pressure will build into the area from the west through
today. It will move off into the Atlantic on Wednesday, with
warmer temperatures arriving on southwesterly winds. The warm
weather continues Thursday into Friday when a cold front moves
through. There will be a chance of showers and thunderstorms as
the front moves through, but otherwise expect drier and slightly
cooler conditions this weekend.
.NEAR TERM /THROUGH TODAY/...
At 06z...a sprawling 1026 millibar high was centered over West
virginia. GOES infrared imagery showed clear skies across the
forecast area. The light winds, clear skies, and dry airmass in
place were allowing temperatures to tumble in the predawn hours
with readings ranging from the 40s in the normally colder valleys
to the 50s elsewhere. For today...the center of the surface high
continues to build to our south with westerly flow ushering
slightly warm air back into the area. Some warm air advection
clouds may brush our northern Maine zones later today. Otherwise...a
sunny day with highs ranging from the upper 70s to the lower
80s...with some lower 70s over our northern Maine mountain zones.
.SHORT TERM /TONIGHT THROUGH 6 PM WEDNESDAY/...
A few warm air advection clouds across northern areas
tonight...otherwise mostly clear with the surface high center
situated off the mid Atlantic coast. The light winds and mainly
clear skies should lead to some patchy valley stratus and fog
development in the predawn hours. Lows tonight should be mainly in
the 50s. On Wednesday...850 millibar temperatures continue to warm
in westerly flow as the surface high center is situated southeast
of New England. The sunshine coupled with 850 millibar
temperatures near plus 16c should result in widespread 80s with a
few 90 degree readings possible over the southern third of New
Hampshire into adjacent southwest Maine.
.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
A weak short wave trough will move from near the Quebec/Ontario
border Wednesday night and across northern Maine Thursday. This
may allow for a few showers or maybe even a thunderstorm in the
mountains during this time. Otherwise, we expect fairly typical
summer weather with increasing humidity. Another short wave trough
approaches Thu night and Friday and could potentially bring a round
of showers and thunderstorms Thu night and Fri, especially across
the north. High pressure then builds in for Saturday and much of
Sunday. A warm front may approach Sunday night and Monday bringing
a renewed chance of showers and thunderstorms.
.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
Short Term /through Wednesday/...local IFR psb in valley stratus
and fog btw 09z and 12z today and again Wednesday morning. Otw VFR
conditions are expected as surface high center builds by to our
Long Term...Generally VFR Wednesday through Thursday. Areas of
MVFR conditions possible in Showers and thunderstorms Thursday
night and Fri. VFR Friday night and Saturday.
Short Term /through Wednesday/...quiet on the waters through
tonight. On Wednesday...southwest flow will increase by afternoon
but both winds and seas should remain below small craft threshold
through the day on Wednesday.
Long Term...Small craft conditions possible Thu and Thu night in
advance of a cold front as SW flow increases, especially on the