textproduct: Great Falls
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Any lingering snow near the central island ranges and the higher terrain of the Big Sky area diminishes and ends early this morning.
- Generally milder and drier conditions then prevail for much of the workweek.
- Passing weather systems will bring periods of breezy to windy conditions and mostly mountain precipitation heading into the latter part of the week.
DISCUSSION
/Issued 159 AM MST Mon Nov 2 2026/
Precipitation is already diminishing from west to east, but the trough axis looks to send a couple more shortwaves that will lower H700 temperatures to around -5C through the early morning hours. Lingering snow will be most widespread over and near the Madison/Gallatin Ranges and the Little Belt/Snowies in central MT. There may also be some patchy fog development for wind protected areas that happen to clear out prior to or near sunrise. Gusty northwesterly surface winds on the backside of the departing trough will continue through the day, with the eastern portion of central/north-central MT looking to see wind speeds exceeding the 25 to 30 mph ranges at times.
Ensembles continue to favor ridging aloft to bring milder and drier conditions heading into the mid-week period; however, breezy conditions develop on Tuesday in advance of weak shortwave, followed by a brief and modest cooldown on Wednesday. A more progressive pattern becomes established over the Northern Rockies during the second half of the week and brings breezy to windy conditions and mostly mountain precipitation for the weekend. - RCG
AVIATION
02/12Z TAF Period
Rain and mountain snow over and near the central island ranges and the higher terrain of the Gallatin ranges will diminish and end through around 02/15Z. MVFR/IFR clouds and mountain obscuration will generally clear from west to east between 02/16 and 02/22Z, with KLWT seeing the longest degraded conditions. Some fog patches may also develop over areas that observe partial clearing through around 02/16Z, although winds will work to preclude widespread development. - RCG
PRELIMINARY POINT TEMPS/POPS
GTF 49 31 55 31 / 0 0 0 0 CTB 48 26 50 28 / 0 0 0 0 HLN 49 27 49 29 / 0 0 0 0 BZN 42 24 47 27 / 30 0 0 0 WYS 40 16 44 19 / 0 0 0 0 DLN 44 24 46 28 / 0 0 0 0 HVR 46 28 49 29 / 10 0 0 0 LWT 40 27 55 30 / 60 0 0 0
TFX WATCHES/WARNINGS/ADVISORIES
None.
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