Area Forecast Discussion
Issued by NWS Great Falls, MT

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282
FXUS65 KTFX 171200
AFDTFX

Area Forecast Discussion
National Weather Service Great Falls MT
500 AM MST Sat Nov 17 2018

...Updated Aviation Discussion...

.SYNOPSIS...

High pressure brings dry and gradually warmer conditions through
the middle of next week. The lone exception may be some light snow
or flurries Sunday into early Monday over parts of north-central
Montana.

&&

.DISCUSSION...

Skies will continue to clear through mid-morning and persist through
the day, with light winds and cold temperatures remaining in place.
A few areas may see some patchy fog, some of which could be dense,
at least briefly. High pressure begins to build through Sunday
keeping the forecast area dry with gradually warming temperatures
and breezy southwest winds. The one possible exception to the
expected dry weather will be with a pair of weak systems moving
southeast from western Canada to the northern US plains Sunday into
early Monday, which may graze north-central MT with clouds and some
flurries or light snow, mainly north and east of Havre. Temperatures
will still be about 10 degrees below normal today but warm back to
the low 50s by Monday, remaining there through most of the week.
High pressure begins to shift east Thursday into Friday, possibly
bringing a few showers to the Continental Divide and the mountains
of southwest MT. A frontal feature may move across the region next
weekend but agreement is marginal at this time.

&&

.AVIATION...
Updated 1200Z.
Skies will continue to clear from north to south through this
morning into afternoon. A possible exception exists just east of
Lake Elwell where satellite data indicates a lake effect band of low
clouds and light snow may extend as far east as near KHVR this
morning. With the light winds and clearing skies, fog will be an
issue at some terminals over the plains, especially KGTF and KHVR.
Mountains/passes will be obscured through 15z this morning south of
US Highway 2, then improve rapidly from north to south by between
15z and 20z.

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  31  23  41  24 /   0   0   0   0
CTB  33  21  40  21 /   0   0   0  10
HLN  31  11  40  19 /   0   0   0   0
BZN  28   0  36  15 /   0   0   0   0
WEY  29 -11  30   2 /   0   0   0  10
DLN  32   8  40  16 /   0   0   0   0
HVR  30  14  41  25 /   0   0  10  10
LWT  28  16  40  22 /   0   0   0  10

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

http://www.weather.gov/greatfalls



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