223
FXUS65 KBYZ 042005
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
205 PM MDT Fri Apr 4 2025

.KEY MESSAGES...

- A few snow showers are expected into early this evening.

- High confidence of building high pressure this weekend; expect
  warmer and dry conditions this weekend into next week.

&&

.DISCUSSION...
Through Saturday night...

Isolated snow showers were occurring under steep low-level lapse
rates depicted in Mesoanalysis. Upper trough was departing the
area, but the lapse rates, cyclonic flow and weak energy behind
the trough were fueling the showers. Kept the isolated showers
over most of the area through 03Z, after which time the flow aloft
starts turning anticyclonic and the airmass becomes more stable
due to loss of heating. Under clear skies, lows tonight will be in
the upper teens to mid 20s. Anticyclonic flow on the front side
of an upper ridge continues through Saturday night with dry
weather. Highs on Saturday will be mainly in the 50s...with light
winds over most areas due to limited mixing. Lows Saturday night
will be in the upper 20s to mid 30s. Arthur


Sunday through Friday...

Upper level ridging will build in Sunday and Monday, providing dry
and warm conditions. Shortwave troughing will swing through early
Tuesday through Wednesday. Forcing and moisture don`t look to be
of much significance. With that, temperatures will remain mild
and precip amounts will stay light. Lower elevations are likely
to get less than a tenth of an inch (in the form of rain) with the
mountains getting a few inches of snow. For the remainder of the
week, ensembles have the upper level pattern transitioning back to
a ridge for the western US. They are signaling some energy
overriding ridging towards the end of the week, but there is still
a lot of uncertainty.

High temperatures will be in the upper 50s to low 60s Sunday,
60s/low 70s Monday, upper 50s/60s Tuesday-Thursday, warming to the
60s/low 70s for Friday. TS

&&

.AVIATION...


Isolated rain/snow showers over south-central MT will dissipate
into this evening. VFR conditions will persist through the period.
TS
&&

.PRELIMINARY POINT TEMP/POPS...

    Sat     Sun     Mon     Tue     Wed     Thu     Fri
-----------------------------------------------------------
BIL 026/056 033/065 036/070 043/063 041/062 038/066 042/070
    20/U    00/U    00/U    24/R    33/R    11/B    11/B
LVM 022/053 031/059 036/064 039/057 037/056 036/063 040/065
    20/U    00/U    01/N    35/R    43/R    01/B    12/R
HDN 024/056 030/064 032/070 041/064 039/063 036/066 040/072
    20/U    00/U    00/U    24/R    43/R    10/B    11/B
MLS 024/054 031/062 032/066 041/064 039/062 039/064 040/069
    20/U    00/U    00/U    22/R    32/R    10/U    10/B
4BQ 024/051 031/060 032/066 040/063 039/061 039/063 040/069
    20/U    00/B    00/U    12/R    32/R    10/U    00/B
BHK 019/049 028/058 027/055 034/060 035/059 035/060 035/066
    20/U    00/B    00/U    12/R    22/R    10/U    10/B
SHR 017/051 026/059 030/067 037/061 034/060 033/063 037/069
    20/U    00/U    00/U    14/R    34/R    10/U    11/B

&&

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

&&

$$
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