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 8:11AM||Sunset 5:28PM||Sunday January 26, 2020 5:12 AM MST (12:12 UTC)||Moonrise 9:32AM||Moonset 7:22PM||Illumination 2%|
7 Day Forecast for Marine Location Near Bigfork, MTHourly EDIT Help
Area Discussion for - Missoula, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KMSO 261039 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 339 AM MST Sun Jan 26 2020
DISCUSSION. Yesterday's rain and breaks in the clouds last night has allowed fog to develop across portions of the Northern Rockies this morning. This fog is fairly dense in places, especially Missoula and Bitterroot valleys, which in turn could create slick spots. The fog will decrease throughout the morning as another disturbance approaches the Northern Rockies.
A weak cold front will push into north central Idaho later this morning then western Montana this afternoon. This feature will cause widespread precipitation, but once again snow will be mainly confined to the higher terrain. The mountains will receive a few inches of new snow, with the heftiest amounts being along the Montana/Idaho border. The timing of this system should keep the precipitation type mainly rain for the valleys, but localized freezing rain can not be ruled out. An exiting weather system during Monday morning continues to show a moisture profile that could lead to a mix of snow and freezing rain. The precipitation will be quite showery, so Monday morning will have an interesting balance of fog and mixed precipitation, that may impact the morning commute. Mountain showers appear to linger through the day. The next weather system will bring a return to widespread mountain snow and valley mixed precipitation for Monday night.
The rest of the week maintains an active weather regime with mountain snow and valley mixed precipitation. A shortwave trough passage during Wednesday night and Thursday continues to look breezy to windy. A period of intense mountain snow is possible during the early morning hours of Thursday, and mountain passes along the ID/MT border are most likely to see impacts.
Very mild temperatures are expected for the end of the week and into the start of the weekend, meaning 40s and 50s will be common in the valleys. Depending on cloud cover, places like Grangeville, Hamilton, and Deer Lodge could be even warmer.
Extended model guidance are coming into good agreement for a strong cold front passage during next Sunday. A rapid change from rain to snow, and colder temperatures are possible.
AVIATION. The breaks in the clouds last night has allowed for the development of fog and low stratus throughout the Northern Rockies. The most dense fog is occurring in the Missoula/Bitterroot valleys, so KMSO will be impacted throughout at least 26/18z. KGPI will experience the low clouds until mid to late morning. A weak cold front will make its way through the region today. Precipitation will move into north central Idaho later this morning then across western Montana this afternoon. Precipitation should arrive at KSMN by 26/17z, KGPI by 26/19z, KMSO around 26/20z and KBTM by 26/22z. The shower activity will decrease throughout the evening and overnight, but the return of fog will be likely.
MSO WATCHES/WARNINGS/ADVISORIES. MT . Freezing Fog Advisory until 11 AM MST this morning Missoula/Bitterroot Valleys.
ID . None.
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|Kalispell, Glacier Park International Airport, MT||22 mi||18 min||N 0||4.00 mi||Fog/Mist||33°F||32°F||96%||1019.1 hPa|
Link to 5 minute data for KGPI
Wind History from GPI (wind in knots)
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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.
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Wind Forecast for Missoula, MT (7,2,3,4)(on/off)  Help
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