Area Forecast Discussion
Issued by NWS Great Falls, MT

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS65 KTFX 021618
AFDTFX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
1018 AM MDT Tue Sep 2 2014

.UPDATE...

Today...High pressure aloft will keep the air mass dry and stable
today. The next low pressure trof will cause some difficulties
over the Northern Rockies and a winter weather advisory, mainly
for Glacier Park, has been issued. Will generally be looking for
rather cool temps and some snow at the higher elevations impacting
recreationalists. Will also keep the high wind warning in place
over the Northern Rockies although the areas affected are quite
small. Zelzer

&&

.AVIATION...
UPDATED 1155Z.
Breezy mid level winds...but VFR conditions will prevail over the
region through 06z Wednesday. Other than some passing mid/high level
clouds...quiet conditions are expected. After 6z Wednesday...expect
increasing mid clouds...with precip developing over the Rocky
Mountain Front. The precip/low ceilings will spread out over the
Plains of North Central MT after 12z Wednesday...with IFR/MVFR
conditions likely. Brusda

&&

.PREV DISCUSSION...
/ISSUED 555 AM MDT Tue Sep 2 2014/
Today through Thursday...Upper ridging over the area today will
provide dry and stable conditions along with warmer temperatures.
Gusty winds along the Northern Rocky Mountain Front have prompted
a high wind warning through the afternoon. Winds may decrease a
bit this morning but speeds should pick up again by afternoon. An
approaching upper trof tonight night will allow southwest flow
aloft to increase and showers will be possible along the Rocky
Mountain Front. The upper trof moves across the Hi-Line Wednesday,
pushing a cold front south. Cooler air aloft and associated lift
with the trof passage will allow showers to develop with isolated
thunderstorms during the afternoon. Models continue to indicate
the heaviest precipitation should stay north of the border. Snow
levels drop to just below 7000 feet Wednesday and accumulating
snow will be possible over the higher peaks of Glacier National
Park. Dry northwest flow aloft returns Thursday. Temperatures will
be near seasonal averages today but drop some 10 to 15 degrees
below averages Wednesday and Thursday.

Thursday night through Tuesday...An upper level ridge of high
pressure will reside over the Pacific Northwest from Friday through
Sunday. As a result...summer like conditions will prevail over the
region this weekend...with little to no rainfall and mild/warm
temperatures expected over the region. Afternoon highs will warm
from the lower 70s on Friday to the upper 70s by Sunday. For Monday
and Tuesday...an upper level trof of low pressure will swing through
the region...resulting in the chance for scattered showers to move
through the region. Temperatures will also cool a bit...with highs
in the lower 70s on Monday and in the 60s for Tuesday. Brusda

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  77  50  63  42 /   0  10  40  20
CTB  72  45  56  39 /   0  10  70  20
HLN  79  49  66  43 /   0  10  30  20
BZN  77  45  67  38 /   0   0  20  10
WEY  65  36  63  27 /   0   0   0  10
DLN  77  46  65  38 /   0  10  10  10
HVR  77  49  67  44 /   0  10  50  20
LWT  75  50  65  43 /   0  10  30  20

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING until 6 PM MDT this evening Northern Rocky
Mountain Front.

WINTER WEATHER ADVISORY from 3 AM to 9 PM MDT Wednesday FOR
ELEVATIONS ABOVE 6000 FEET FOR Northern Rocky Mountain Front.

&&

$$

weather.gov/greatfalls
www.twitter.com/NWSGreatFalls
www.facebook.com/NWSGreatFalls




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.