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 7:00AM||Sunset 8:15PM||Tuesday April 7, 2020 8:24 PM MDT (02:24 UTC)||Moonrise 6:56PM||Moonset 6:18AM||Illumination 100%|
7 Day Forecast for Marine Location Near Missoula, MTHourly EDIT Help
Area Discussion for - Missoula, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KMSO 072102 AFDMSO
Area Forecast Discussion National Weather Service Missoula MT 302 PM MDT Tue Apr 7 2020
A gorgeous, yet breezy spring day is evident across the Northern Rockies. Temperatures are well into the 50s and 60s. This will be the norm this week as warm, high pressure reigns. At night, temperatures will be able to cool into the 20s and 30s most areas, but teens in the higher elevation locations with snow cover. High temperatures may even crack 70 degrees for some locations by Thursday for the first time this year.
All eyes are on the big change that is expected to occur Friday night into Saturday as a cold Canadian air mass moves south over western Montana, making it feel like winter again.
These are the changes since the last forecast package:
1) A trend for the cold front to move across northwest Montana continues to be slightly faster each run. It could potentially make its way into the Flathead Valley by daybreak Saturday.
2) Models have been trending a little wetter Saturday morning across west-central Montana.
3) We have trended higher with easterly winds Saturday for western Montana and Lemhi County . with the potential for 50 mph wind gusts in a few places.
These are some of the impacts we feel may occur:
1) A return to snowy travel conditions with blowing snow a possibility all along the Continental Divide and including portions of Interstate 90.
2) Confidence is low, but damaging winds are a concern across northwest Montana, especially as soil temperatures are warming up in the valleys. This time of year, it doesn't take that much wind, maybe 40 mph, to bring down a lodgepole pine tree. Right now the wind gradient would suggest 40 to 50 mph are not out of the question.
3) A period of heavy snow is possible Saturday morning somewhere in northwest or west-central Montana near the cold front. There is uncertainty in exactly where this may setup, but it could become a problem for travel between Kalispell and Missoula on US-93 or even on Highway 200.
4) Southwest Montana could experience longer winter weather impacts during the day as the colder air filters in with constant snow shower activity. Gusty winds will add to the mix as well.
5) Saturday evening could be a little tricky in Lemhi County as the cold front makes its way down there. We're not expecting that much snow, but there could be enough to coat the roads and, combined with gusty winds, could be an issue.
6) Near-record low temperatures are possible Sunday and Monday. All of the main stations, Kalispell, Missoula, Butte, Salmon and a few places in central Idaho, could be within the top 10 coldest daily low temperatures. It's still early for people to be placing sensitive plants outside, but they should be aware of this threat.
AVIATION. Expect VFR conditions under high clouds and unlimited visibility through Wednesday as dry northwest flow persists. Gusty winds will be the only impact to aviation over the next 24 hours. Gusts to 25 knots out of the north and northwest will be present at all terminals this afternoon under a tight pressure gradient.
MSO WATCHES/WARNINGS/ADVISORIES. MT . None. ID . None.
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Link to 5 minute data for KMSO
Wind History from MSO (wind in knots)
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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 (22,6,7,8)(on/off)  Help
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