Weather Service Report


179 
FXUS65 KBYZ 201437
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT 
837 AM MDT Sat Oct 20 2018

.UPDATE...
Strong high pressure aloft will keep our area dry and warm today.
Lee side thermal trof will push temps to the lower 70s across our
western/central parts. Next Canadian backdoor front will arrive
late tonight. Forecast has all of this covered well, but did tweak
temps up a bit in spots. JKL

&&

.SHORT TERM...valid for Tdy and Sun...

High pressure ridging along with rising heights will build once 
again across the forecast area today into Sunday. This will result
in sunny skies and mild temperatures. Another weak cold front 
will move in from the northeast tonight. The front will move 
through dry with no precipitation expected. Southwest downsloping 
winds and compressional warming ahead of the front will allow 
temperatures to warm well above normal today with readings in the 
upper 60s to lower 70s. Sunny skies will prevail Sunday but 
heights will be lower behind the front along with a cooler 
east/northeast surface flow. Temperatures will remain just above 
normal with lower to middle 60s common across the lower 
elevations. Hooley

.LONG TERM...valid for Mon...Tue...Wed...Thu...Fri...

Beginning of the work week looks seasonally warm and mainly dry,
while cooler blustery conditions and a chance of showers 
dominates the end of the week into next weekend. 

Ridging persists over the area Monday but in a weakened form
compared to the previous several days. A filling upper low from
California shifts northeast into the area knocking heights down as
it fills. This feature also draws mid level moisture in from the
south bringing a few afternoon and evening showers to mountain
locations. Lower elevations look to remain dry with just a bit
more cloud cover developing off of the mountains. 

As the Great Basin system shifts east of the area, it opens up 
the upper levels to stronger Pacific flow by Thursday. Pacific 
moisture combined with a cooler Pacific Northwest airmass will 
push temperatures down and increase chances for low elevation 
rain showers and mountain snow. A fairly strong surface pressure 
gradient will enhance winds creating blustery conditions at times 
from Friday through the weekend. Chambers

&&

.AVIATION...

VFR condition will prevail through Sunday. Chambers

&&

.PRELIMINARY POINT TEMP/POPS...

    Tdy Sun     Mon     Tue     Wed     Thu     Fri     
-------------------------------------------------------
BIL 071 039/063 037/060 037/064 042/067 041/065 044/061
    0/U 00/U    00/U    00/U    00/U    10/U    12/W
LVM 073 039/067 037/063 037/064 039/062 038/062 041/057
    0/U 00/U    00/U    00/U    00/U    11/B    23/W
HDN 071 037/063 035/061 036/064 039/067 039/066 041/063
    0/U 00/U    00/U    00/U    00/U    00/U    12/W
MLS 066 037/060 034/059 036/064 039/065 038/064 042/061
    0/U 00/U    00/U    00/U    00/U    00/U    12/W
4BQ 067 039/062 035/063 038/065 041/066 040/065 041/062
    0/U 00/U    00/U    00/U    00/U    00/U    12/W
BHK 061 036/059 031/057 033/061 037/063 038/062 040/060
    0/U 00/U    00/U    00/U    01/U    10/U    12/W
SHR 071 037/065 035/062 036/063 037/064 037/063 038/060
    0/U 00/U    00/U    00/B    01/B    00/U    12/W

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...None.
WY...None.

&&

$$
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Western Regional Climate Center, wrcc@dri.edu