Wednesday, January19, 2022
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Marine Weather and Tides
Lakeside, MT

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 8:17AMSunset 5:18PM Wednesday January 19, 2022 12:58 AM MST (07:58 UTC) Moonrise 7:05PMMoonset 9:47AM Illumination 97% Phase: Waning Gibbous; Moon at 16 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Lakeside, MT
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location: 48.04, -114.22     debug


Area Discussion for - Missoula, MT
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FXUS65 KMSO 182131 AFDMSO

Area Forecast Discussion National Weather Service Missoula MT 231 PM MST Tue Jan 18 2022

DISCUSSION. The arctic boundary will continue to slowly move west and south through western Montana this afternoon and evening. It is currently moving through the Flathead Valley and has crossed the Continental Divide at MacDonald Pass in west-central Montana. For the Flathead Valley, expect cooling temperatures and gusty east-northeast winds up to 30 mph. Impacts due to snowfall are no longer expected, except for highway 2 from West Glacier to Marias Pass. For areas further south, moisture streaming in from the west will interact with the arctic boundary, particularly southwest Montana (Powell, Granite and Deer Lodge Counties). Here, snow bands are expected to develop later this afternoon and persist through the evening hours. Quick bursts of snow and rapidly cooling temperatures may create slick conditions along I-90, Highway 12 & 200. Some hi-resolution models have these bands developing over the Missoula Valley, but confidence is low for this scenario at this time.

Temperatures will be cooler area-wide for the day tomorrow, with mountain and valley snow showers. The area mountains could pick up an additional couple inches of snow with valley accumulations generally at an inch or less.

Thursday afternoon through Friday a shortwave of trough, slightly stronger than the one we'll see tomorrow, will bring another round of snow to the Northern Rockies. Impacts due to snow will likely be confined to the mountains and mountain passes, with scattered slick spots in the valleys. There will be another opportunity for snow bands developing over north-central Idaho, as well as west-central and southwest Montana after sunset Thursday. If this scenario does occur, then larger portions of area valleys could see travel impacts due to accumulating snowfall. Stay tuned!

Global models and their ensembles are in general agreement depicting a ridge of high pressure amplifying along the US west coast Friday through much of next week. The Northern Rockies will begin to be impacted by this high pressure on Saturday, when valley temperature inversions, overnight/morning valley fog, and deteriorating air quality are anticipated to resume across the region. The position of the high pressure will be closely related to the magnitude of the aforementioned impacts, with a more inland high pressure position intensifying those impacts. Some global models suggest that weak atmospheric waves early next week will disrupt the high pressure enough to lessen the magnitude of temperature inversions for some valleys and may even produce very light snow accumulations across the region. By late next week, models are clustering around a solution that moves the coastal high pressure ridge further northwest over the Gulf of Alaska. This predicted westward movement of the high pressure would open the door to the next storm cycle, accompanied by more snow and another arctic airmass.

AVIATION. A weak arctic boundary will continue to move through western Montana this afternoon and evening. It has recently passed through KGPI with gusty east-northeast winds. Wind gusts at the terminal will range from 20-30kts through at least 19/0600Z this evening. Any snowfall around the terminal this evening will be light. The arctic boundary may make it as far west and south as KMSO before it weakens and retreats back to the north. Gusty easterly winds up to 20-25kts will be possible for KMSO from 18/2300-19/0300Z. Some hi-resolution models have these bands developing over the Missoula Valley, but confidence is low for this scenario at this time. KBTM stands a better chance at seeing snow accumulations, between 19/0000Z-19/1200Z.



MSO WATCHES/WARNINGS/ADVISORIES. MT . Winter Weather Advisory from 2 PM this afternoon to 11 PM MST this evening Butte/Blackfoot Region.

Winter Weather Advisory until 11 PM MST this evening Flathead/Mission Valleys.

Winter Weather Advisory until 2 AM MST Wednesday West Glacier Region.

Winter Weather Advisory until 5 AM MST Wednesday Potomac/Seeley Lake Region.

ID . None.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kalispell, Glacier Park International Airport, MT18 mi63 minN 1410.00 miOvercast25°F13°F60%1024.4 hPa

Link to 5 minute data for KGPI

Wind History from GPI (wind in knots)
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Last 24 hr0000SW7SW3S6S8S7S3NE12NE19NE19NE18N18
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1 day ago00000N3W40000000E30SW60SE10SE7S9SW600
2 days ago000SW4000000000000S300N30000

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of PacificNorthwest    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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