Area Forecast Discussion
Issued by NWS Billings, MT

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FXUS65 KBYZ 240248

Area Forecast Discussion...Updated
National Weather Service Billings MT
848 PM MDT Tue May 23 2017

Just some minor tweaks to sky cover and winds based on latest
observations this evening. Otherwise looking for a dry night. A
Pacific cold front will move across the area on Wed., reaching
KBIL between 18Z and 21Z. GFS soundings showed mixing to 600 mb
over much of the area, so high-based precipitation is possible
with gusty winds. Chances for afternoon showers and storms looked
best in the far eastern zones where SSE flow will moisten up the
lower levels. The good mixing will promote windy conditions across
the area, as well as lower humidities. These conditions were
already highlighted in the FWF early this morning. Arthur


.SHORT TERM...valid for Wed and Thu...
The main focus in the short-term remains the front and winds
tomorrow. The latest runs came in a little weaker with the winds,
but have kept winds pretty much the same. Ahead of the front there
will be some decent instability and shear. This could lead to
some thunderstorms developing right along the front tomorrow
evening. Given the timing of the front being after peak heating,
not sure how strong these storms will actually be able to get, but
could not rule out a few stronger thunderstorms. Winds will
decrease overnight, but will still remain breezy into Thursday.
Thursday will be dry for much of the area, but as lingering energy
behind the front hangs over the higher terrain some showers could
remain. Reimer

.LONG TERM...valid for Fri...Sat...Sun...Mon...Tue...
Not many changes to the extended. Models continue to show a low
pressure remaining over southern Canada through the rest of the
week and into the weekend. As it does weak impulses of energy will
move around the low into Montana. This will give the area
scattered showers and thunderstorms every day. Following the cold
front Wednesday temperatures will slowly begin working back to the
80s by early next week. Reimer &&

VFR with no aviation hazards tonight. Winds will increase out of
the west/southwest early tomorrow morning with gusts in the 30 to
40kt range becoming common in the afternoon. Chambers &&


    Wed     Thu     Fri     Sat     Sun     Mon     Tue
BIL 055/076 045/064 043/065 045/069 047/072 047/074 048/079
    03/T    11/B    12/T    12/T    11/B    11/B    11/B
LVM 050/068 039/059 036/062 038/067 039/070 039/073 040/076
    02/W    23/T    23/T    22/T    12/W    11/U    11/U
HDN 051/081 044/065 042/066 043/069 044/071 045/074 045/078
    04/T    21/B    12/W    12/T    11/B    11/B    11/B
MLS 052/079 046/065 043/067 045/069 046/070 046/072 046/077
    05/T    41/N    11/B    12/W    12/T    21/U    11/U
4BQ 048/082 045/065 040/065 042/067 043/068 044/070 044/075
    02/T    41/B    11/B    12/W    13/T    21/B    11/U
BHK 045/075 042/062 039/064 040/065 042/066 041/067 041/072
    05/T    61/N    11/B    12/W    22/W    21/B    01/U
SHR 048/078 041/061 039/060 039/063 041/066 041/068 041/075
    02/T    22/W    23/T    23/T    12/T    12/W    11/B




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