Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 8:13AM||Sunset 4:45PM||Monday December 9, 2019 5:00 PM MST (00:00 UTC)||Moonrise 3:36PM||Moonset 5:14AM||Illumination 96%|
7 Day Forecast for Marine Location Near Polson, MTHourly EDIT Help
Area Discussion for - Missoula, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KMSO 092121 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 221 PM MST Mon Dec 9 2019
DISCUSSION. Northwesterly flow will persist over the Northern Rockies through tonight into Tuesday. A subtle feature is currently making its way through the region which could allow for the development of light snow showers over the higher terrain, especially around Glacier National Park.
A more substantial disturbance will trek across the Northern Rockies Tuesday night into Wednesday morning. This feature will bring some snow accumulations to the the region, especially to areas along the Montana/Idaho border. Lookout and Lolo passes have the potential to receive up to an inch or two of snow by late Wednesday morning.
A plume of atmospheric moisture will bring heavy snowfall across the higher terrain Thursday through Friday morning. Snow will begin early Thursday morning and peak in intensity during the afternoon and evening. A foot or more of snowfall is possible at Lookout and Lolo Passes by Friday morning. A wintry mix of precipitation is likely Thursday morning across valley locations. Areas along Highway 200 from Thompson Falls to Heron and U.S. Highway 2 from Kalispell to Troy will likely start out as snow early Thursday morning before transitioning to a mix of rain and freezing rain as warmer air slowly works into the area Thursday afternoon. Before precipitation switches over to rain, several inches of snow could fall across this area. A wintry mix of precipitation is also possible across the Flathead, Mission, Seeley-Swan, Missoula, and Bitterroot valleys early Thursday morning before temperatures warm above freezing. Lesser precipitation amounts are expected across these areas before precipitation changes over to rain as snow levels climb to 4,000 feet Thursday afternoon.
Another weather disturbance embedded within moist northwesterly flow will bring the possibility of snow across the entire area Friday afternoon into Saturday. A broad area of low pressure will track across eastern Washington into western Montana. A band of snowfall will develop on the north and west side of the low. Valley snowfall accumulations remain highly uncertain due their on dependency on exact track of the low; however, modest confidence exists for another period of heavy mountain snowfall across the Clearwater and Bitterroot mountains, with impacts to Lookout, Lolo, and Lost Trail Passes.
A drying trend is expected Sunday into Monday. Isolated snow showers will continue across the mountains as northwesterly flow continues.
AVIATION. Mid level stratus deck will continue to hover over western Montana through tonight into Tuesday with KGPI and KMSO being covered the majority of the time. This stratus could extend over KBTM or KSMN. A subtle upper level feature is moving over the Northern Rockies this afternoon and evening. This feature has the potential of causing very light snow in the higher terrain, especially around Glacier Park. At this time, snow showers are not anticipated to impact any of the terminals.
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.
|Kalispell, Glacier Park International Airport, MT||42 mi||65 min||N 0||10.00 mi||Overcast||32°F||26°F||79%||1024.4 hPa|
Link to 5 minute data for KGPI
Wind History from GPI (wind in knots)
|1 day ago||SW||Calm||SW||W||SW||SW||Calm||S||SW||S||SW||Calm||W||SW||N||Calm||N||NE|
|2 days ago||W||Calm||Calm||Calm||SW||Calm||Calm||W||Calm||Calm||Calm||N||W||Calm||Calm||Calm||Calm||E||W||SW||SW||W||Calm||W |
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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 (19,4,5,8)(on/off)  Help
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