FXUS65 KTFX 221125 AFDTFX Area Forecast Discussion National Weather Service Great Falls MT 525 AM MDT Sun Mar 22 2026 Aviation Section Updated. .KEY MESSAGES... - Some morning fog over Central MT and light snow showers in the Havre area, otherwise a seasonable March day expected. - Above normal temperatures continue for the first half of the week, but it turns windy by Wednesday. && .DISCUSSION... - Meteorological Overview: Early today, light snow showers are affecting the Havre/Harlem areas, while areas of dense fog are affecting the Stanford/Lewistown areas because of the recent precipitation. A dense fog advisory will continue until 9 AM for now for Central MT, but it might end up being cancelled a bit early. A westerly flow aloft is currently over the CWA this morning, but expect an upper level ridge to build over the Northern Rockies early this week. This will allow above normal temperatures to continue for the first half of the work week. Additionally, the chance for any precipitation will be quite low, other than a passing shower through Wed. The main impactful weather this week will be another round of strong winds, mostly on Wed over North Central MT. The time period of high winds looks to be rather short compared to recent event, never the less high wind statements will likely need to be issued early this week. For late in the week and into next weekend, after a cool day on Thursday, mild temperatures and dry conditions return. Next weekend is looking mostly dry and mild, as another upper level ridge develops over the Northern Rockies. - Forecast Confidence & Scenarios: The main concern this week will be the potential for strong winds on Wednesday. Right now there is a 90 percent chance of strong winds along the Rocky Mountain Front and in the Cut Bank area by Wednesday. Further east, there is about a 60 percent for strong winds along the Highway 2 corridor from Shelby to Harlem, and then across Central MT from Great Falls to Lewistown. In terms of snowfall, most of the snow accumulations this week will be confined to the northern Rockies/Glacier Park region. Snow levels will be high to start the week, so the precipitation will likely begin as rain, even at higher elevations. Snow levels will lower by Wed, and there is an 80 percent chance of snow accumulations above 2 inches over the Northern Rockies Tue into Wed. Overall, I am not expecting significant snow accumulations this week, even in the mountains. Brusda && .AVIATION... 22/12Z TAF Period. Light snow is affect the Havre area early this morning, with the snow ending generally by 13z. Some fog is affecting the Lewistown area, an that should thin out between 14 and 15z. Otherwise, just mostly just some passing high clouds are expected through the the remainder of the period. Brusda && .PRELIMINARY POINT TEMPS/POPS... GTF 56 31 61 38 / 0 0 0 0 CTB 52 23 55 30 / 0 0 0 0 HLN 59 30 63 37 / 0 0 0 0 BZN 60 31 67 38 / 0 0 0 0 WYS 51 20 58 30 / 0 0 0 10 DLN 63 33 68 40 / 0 0 0 0 HVR 55 27 57 30 / 0 0 0 0 LWT 53 29 59 35 / 0 0 0 0 && .TFX WATCHES/WARNINGS/ADVISORIES... Dense Fog Advisory until 9 AM MDT this morning for Fergus County below 4500ft-Judith Basin County and Judith Gap. && $$ http://www.weather.gov/greatfalls