Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 220952

Area Forecast Discussion
National Weather Service Billings MT
352 AM MDT Mon Oct 22 2018

.SHORT TERM...valid for Tdy and Tue...

High pressure ridging will once again be over the forecast area
today through Tuesday. This will result in sunny to mostly sunny
skies along with mild temperatures. The ridge axis will be
situated over the Pacific Northwest today resulting in a northwest
flow aloft. In addition, surface high pressure will be over
southern Canada and the Dakotas today bringing an easterly surface
flow. This will result in slightly cooler temperatures today than
yesterday but highs will still be slightly above normal for this
time of year.

For Tuesday, the ridge axis shifts east across Montana.
Tightening pressure gradients across the Dakotas and far eastern
Montana will result in gusty southeast winds across Powder River,
Fallon and Carter Counties. Elsewhere, winds will become southeast
but not as gusty. This will help temperatures warm a few degrees
more than today. Moisture from a disturbance that has been down
around the desert southwest will shift northward and this will
bring a chance for showers to the Beartooth/Absaroka Mountains
late Tuesday afternoon into Tuesday night. Hooley

.LONG TERM...valid for Wed...Thu...Fri...Sat...Sun...

Broad diffuse upper low moves across the area from the southwest
on Wednesday. There is some moisture associated with this system,
but the energy associated with it is weak. Kept some low
precipitation chances in the mountains and foothills, but
otherwise just some increased cloud cover as a result of this
system crossing the area.

As the upper low shifts east of the area it opens the door to
faster flow off the Pacific ocean to invade the area. This will
bring periods of gusty winds, slightly cooler temperatures and
waves of showers propagating west to east across the area through
the weekend, generally more unsettled conditions. Nothing
suggests any big impacts from this activity with gusty west to
northwest winds on Friday/Saturday probably the biggest threat of
the period. Ensemble temperature spreads do widen considerably
late in the weekend into early next week so will keep an eye on
the weekend going forward for any big shifts one way or the other
that could impact weekend outdoor plans. Chambers



VFR conditions will prevail through Monday. Chambers



    Tdy Tue     Wed     Thu     Fri     Sat     Sun
BIL 059 036/063 045/068 042/065 043/061 038/057 036/061
    0/U 00/U    10/U    11/B    32/W    21/U    10/B
LVM 062 036/064 042/064 039/061 041/058 036/056 035/060
    0/U 01/B    11/U    11/B    32/W    21/U    11/N
HDN 061 035/064 040/068 040/065 040/061 036/057 034/062
    0/U 00/U    10/U    11/B    32/W    21/B    10/B
MLS 058 034/063 041/065 041/063 040/059 036/056 033/058
    0/U 00/U    00/U    01/B    12/W    11/U    10/B
4BQ 061 036/064 042/067 042/064 041/060 037/056 034/060
    0/U 00/U    10/U    01/B    12/W    21/B    11/B
BHK 057 029/060 039/063 040/061 037/057 034/055 031/055
    0/U 00/N    10/B    00/B    12/W    12/W    10/U
SHR 062 034/064 039/065 039/062 038/059 033/054 032/060
    0/U 01/B    11/U    01/B    23/W    22/W    10/B




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