Area Forecast Discussion
Issued by NWS Billings, 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
FXUS65 KBYZ 231518

Area Forecast Discussion
National Weather Service Billings MT
918 AM MDT Fri Mar 23 2018


No update for inherited forecast this morning. Scattered showers
remain possible east of Billings into this afternoon. Temperatures
are on the rise this morning, regardless of the cloud cover,
following the warm frontal passage overnight. AAG


.SHORT TERM...valid for Tdy and Sat...

Rain and mountain snow was
affecting much of the area overnight as a warm front lifted north
and east through the region. Snow levels were generally above
9,000 feet. Strong southeast winds across eastern areas will
gradually decrease through the morning, shifting to the west and
northwest this afternoon. Shower chances will continue across the
area today as energy embedded in southwest flow aloft moves
through the region. Showers diminish this evening as heights build
aloft and forcing wanes. A shortwave and associated cold front
are progged to move through the region on Saturday bringing more
rain and mountain snow shower chances. Associated pressure falls
over the area will cause winds to increase across the western
foothills Saturday afternoon and evening.

High temperatures will range from the 50s in the west today, to
the lower 40s in the east, with 40s and 50s for highs on Saturday.
Low temperatures generally in the 20a can be expected tonight and
Saturday night. We will continue to monitor streams/rivers for ice
jams and potential low-land flooding. STP

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

Southwesterly upper-level flow should bring mountain snow showers
and scattered lower-elevation rain showers to much of the area on
Sunday. Downsloping flow looks to limit precipitation especially over
the central areas. A shortwave trough moving northeastward over
the Northern Rockies should then bring wet snow mainly to north
central WY and southeast MT /east and southeast of Billings/
Sunday night into Monday. A few inches of wet snow look possible
over this area. Models agree on the track of this system, which
is boosting confidence in the placement of the snow.

Shortwave ridging builds in for Tuesday, bringing dry weather to
the region. Then some weak disturbances embedded in northwesterly
flow aloft can bring a few rain and snow showers to the region on
Wednesday. Ridging and dry weather return for Thursday. Upper
cyclonic flow with more weak disturbances can bring scattered rain
and snow showers again on Friday.

High temperatures should generally be in the 40s to lower 50s
Sunday through Friday. Coolest days should be Sunday and Monday,
with a pocket of 30s likely Monday over north central
WY/southeast MT in the snow. RMS



Expect obscurations in snow showers over the Beartooth/Absaroka
and Bighorn Mountains today. Over the plains, scattered showers
will continue, mainly east of Billings, into this afternoon.
Brief, localized MVFR conditions possible in showers. VLIFR
conditions in fog have developed this morning along the MT/ND
border, including KBHK, but are expected to improve by this
afternoon. Otherwise, intermittent MVFR/IFR due to low stratus is
possible over SE MT through the day today.

In addition, LLWS is expected over SE MT and north central WY
this morning with the strongest winds over SE MT approaching 60 kt
at 1500-2000 feet AGL. These winds should weaken to 30 to 40 kt
by 18z. AAG



    Tdy Sat     Sun     Mon     Tue     Wed     Thu
BIL 049 028/049 029/043 027/043 026/046 031/047 030/049
    2/W 12/W    23/W    32/O    10/U    32/W    21/B
LVM 054 031/048 025/043 024/043 023/048 029/050 029/053
    2/W 24/W    23/W    41/B    12/W    33/W    11/N
HDN 046 025/048 026/043 025/043 022/046 028/046 027/048
    2/W 02/W    23/W    43/O    10/U    32/W    21/B
MLS 042 024/047 027/043 027/040 023/043 029/043 026/045
    3/W 02/W    32/W    34/O    10/U    21/B    11/B
4BQ 042 022/050 027/044 026/040 022/044 028/044 024/047
    3/W 01/N    23/W    47/O    10/U    22/W    11/B
BHK 039 023/043 028/041 026/037 021/041 026/040 023/042
    4/W 11/N    31/E    35/O    10/U    31/N    21/B
SHR 048 025/056 029/044 025/040 021/045 027/047 026/049
    4/W 01/U    24/W    65/O    10/U    32/W    21/B




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