Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:18AM||Sunset 6:20PM||Friday February 28, 2020 2:34 PM MST (21:34 UTC)||Moonrise 9:41AM||Moonset 11:35PM||Illumination 28%|
7 Day Forecast for Marine Location Near Lakeside, MTHourly EDIT Help
Area Discussion for - Missoula, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KMSO 280957 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 257 AM MST Fri Feb 28 2020
DISCUSSION. Temperatures today will be running some ten degrees above normal with pre-front warm air advection reaching its peak across the Northern Rockies. Sunshine should be abundant, at least through this morning. But increasing clouds late in the day will be the first indicators of a pending change in the weather on Saturday.
That change, in the form of a cold front, will quickly sweep across Idaho and Montana throughout the day. Models have maintained their timing of the past two days which places frontal passage in NW Montana and Kalispell by mid-morning, Missoula around lunchtime and ultimately through Lemhi County, Idaho and SW Montana (Butte area) during the afternoon. Overall there has been a decreasing trend in the overall amounts of precipitation. However, the flow pattern will be somewhat favorable throughout much of the terrain where 2 to 5 inches of new snow seem likely. Upwards of 6 to 8 inches are expected atop some of the higher peaks of the Bitterroot Mountains north of US-12 and especially across the southern Mission Mountains. But all things considered it seems that there will be minimal public impact due to the short duration of snow. Thus Winter Weather Advisories seem unlikely at this time.
Moist NW flow aloft will persist over an unstable, post-frontal environment, leading to a fairly steady diet of snow showers on Sunday and Monday. By mid-week an even stronger jet stream within the NW-W flow will usher in a plume of deep atmospheric moisture and wind across the region. This combination, in concert with our complex terrain will lead to upslope enhanced heavy snow along the Idaho/Montana border and Seeley/Swan Region. While it's still too early to focus on specific numbers, this pattern has the hallmark of a heavy mountain snowfall event capable of producing 1 to 2 feet of snow. However the strong winds at mountain top layer will likely lead to down sloping in the valleys and perhaps some notable wind gusts.
Drier weather and above normal temperatures at this time seem possible to finish next week.
AVIATION. Clouds will increase across the Northern Rockies today. And while some terrain across NW Montana could start to be obscured late tonight, any impact to area ceiling heights will not occur until Saturday morning. In general, pleasant flying conditions are expected over the next 24 hours.
MSO WATCHES/WARNINGS/ADVISORIES. MT . None. ID . None.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
Link to 5 minute data for KGPI
Wind History from GPI (wind in knots)
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|2 days ago||E||SE||SE||SE||SW||SW||W||SE||SW||Calm||Calm||Calm||Calm||SW||S||W||Calm||Calm||Calm|
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GEOS Local Image of PacificNorthwest EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Missoula, MT (16,3,4,5)(on/off)  Help
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