Sunday, January26, 2020
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Marine Weather and Tides
Bigfork, MT

Version 3.4
NOTICE
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 8:11AMSunset 5:28PM Sunday January 26, 2020 5:12 AM MST (12:12 UTC) Moonrise 9:32AMMoonset 7:22PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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 Bigfork, MT
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Area Discussion for - Missoula, MT
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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.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kalispell, Glacier Park International Airport, MT22 mi18 minN 04.00 miFog/Mist33°F32°F96%1019.1 hPa

Link to 5 minute data for KGPI

Wind History from GPI (wind in knots)
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Last 24hrSW4SW7SW6CalmCalmSW4W3CalmCalmCalmS6S7SE5CalmW3CalmCalmW3CalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmW3CalmCalmS4S6S7S9S9SE7S6W4CalmSE6S10S5S9S9SE7SE7SW5W3
2 days agoSW5CalmCalmCalmSW4Calm--SW3SE3CalmCalmCalmCalmCalmN4CalmCalmCalmCalmCalmCalmCalmCalmCalm

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: 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 (7,2,3,4)
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Ground Weather Radar Station Missoula, MT
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.