Updated: 2:10 PM MST on February 5, 2016
Areas of rain in the evening...then rain and snow likely after midnight. Chance of precipitation 90 percent. Little or no new snow accumulation. Lows in the upper 20s to mid 30s. South winds to 15 mph after midnight.
Mostly cloudy with a 50 percent chance of rain and snow showers. Highs in the mid 30s to lower 40s. Southwest winds to 15 mph.
Mostly cloudy. A 20 percent chance of snow showers in the evening. Lows in the 20s.
Mostly cloudy. Highs in the 30s to lower 40s.
Mostly cloudy in the evening then becoming partly cloudy. Patchy freezing fog. Lows in the 20s.
Mostly cloudy. Patchy freezing fog in the morning. Highs in the mid 30s to lower 40s.
Partly cloudy. Patchy freezing fog. Lows in the 20s.
Partly cloudy. Highs in the mid 30s to lower 40s.
Partly cloudy. Patchy freezing fog. Lows in the mid 20s to lower 30s.
Mostly cloudy. Highs in the mid 30s to lower 40s.
Mostly cloudy with a 20 percent chance of rain and snow showers. Patchy freezing fog. Lows in the mid 20s to lower 30s.
Mostly cloudy with a 20 percent chance of rain. Highs in the mid 30s to lower 40s.
Mostly cloudy with a 30 percent chance of rain and snow. Patchy freezing fog. Lows in the mid 20s to lower 30s.
Mostly cloudy with a 30 percent chance of rain. Highs in the mid 30s to lower 40s.
Personal Weather Stations [Add your weather station!]
Location: Voves Avenue, Libby, MT
Updated: 4:51 PM MST
|Temperature: 43.0 °F||Dew Point: 33 °F||Humidity: 68%||Wind: North at -||Pressure: 30.25 in||Hourly Precipitation: -||Windchill: 43 °F||Graphs|
Area forecast discussion National Weather Service Missoula Montana 236 PM MST Friday Feb 5 2016 Discussion...another weather disturbance will be making its way across the northern rockies later tonight through Saturday. As the system approaches the region, the pressure gradient will tighten creating gusty southerly winds on the Camas Prairie in Idaho. Grangeville could have wind gusts up to 45 mph later tonight into Saturday morning. Also this southerly wind will keep the atmosphere well mixed during the overnight hours, so temperatures for tonight should be relatively mild. Widespread precipitation is expected as the cold front moves through the region. During the onset of precipitation, snow levels will be fairly high causing a wintry mix in many valley locations. After the passage of the front by mid Saturday morning, snow levels drop to most valley bottoms. Mountain passes, especially along the Montana/Idaho border, will receive a significant amount of snow tonight through Saturday evening. Winter weather advisories have been issued for the travel impacts. The atmosphere becomes unstable enough for the development of hefty snow showers. The atmosphere profile indicates that snow bands will be possible by Saturday afternoon and lasting into the evening hours. Snow bands will be able to produce very heavy snow in a very short distance which will be a major impact on area roadways. At this time, it is difficult to Pin Point where and when snow bands will develop on Saturday. A strong ridge of high pressure will build over the West Coast extending into the northern rockies resulting in dry conditions Sunday through much of next week. As is typical with these strong Winter Ridge patterns, valley inversions will develop with the potential for low stratus, fog, and decreasing air quality. Seasonably cold temperatures are expected for valleys under the inversions, while higher elevation valleys and the adjacent mountains experience well above normal temperatures and frequent sunshine. By late next week, forecast models bring a cold front through and begin to breakdown the ridge but confidence is low on the timing and strength of the cold front. Most likely this will not be a significant event with much of the energy absorbed by the ridge. && Aviation...a transitory ridge of high pressure has create fair flying conditions this afternoon and evening. The conditions will steadily deteriorate tonight as another system will make its way across the northern rockies. Ceilings will be steadily dropping tonight and widespread snow showers are expected by the morning. These showers will be capable of producing heavy snow, so visibilities could be reduced to less than a mile at times. Snow bands are a possibility by Saturday afternoon, creating another issued when the band is within the vicinity of the terminal. && Air stagnation...confidence remains high that a strong ridge of high pressure will build across the region late Sunday and last through late next week, allowing valley inversions to develop and persist. Stable conditions will lead to decreasing air quality especially for the lower valleys of western Montana and Lemhi County in Idaho. The next potential break up of the stagnate conditions will be Friday or Saturday of next week as the ridge of high pressure gradually breaks down. && Mso watches/warnings/advisories... Montana...Winter Weather Advisory from 11 PM this evening to 11 PM MST Saturday above 4000 feet for the Bitterroot/Sapphire Mountains...Lower Clark Fork region...Potomac/Seeley Lake region...West Glacier region. Idaho...Winter Weather Advisory from 10 PM this evening to 10 PM PST Saturday above 4000 feet for the northern Clearwater Mountains...southern Clearwater Mountains. && $$