Saturday, September19, 2020
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Marine Weather and Tides
Missoula, MT

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:18AMSunset 7:40PM Saturday September 19, 2020 12:33 PM MDT (18:33 UTC) Moonrise 9:02AMMoonset 8:12PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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 Missoula, MT
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location: 46.87, -114.01     debug


Area Discussion for - Missoula, MT
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FXUS65 KMSO 190901 AFDMSO

Area Forecast Discussion National Weather Service Missoula MT 301 AM MDT Sat Sep 19 2020

DISCUSSION. Showers have begun across the Northern Rockies, these showers will increase in coverage and intensity throughout the morning. As an upper level trough moves closer to the Northern Rockies, a thunderstorm or two cannot be ruled out, though these will be widely scattered. Although the models have trended down for the past 3 days in terms of precipitation, it is still expected that most locations will receive beneficial rain of 0.10" and greater. The axis of best precipitation will be from Central Idaho eastward into the Southern Bitterroot and southwest Montana. An area of heavier precipitation is also possible for the Mission Mountains and the Bob Marshall Wilderness, where an inch plus of precipitation is possible.

On top of beneficial rainfall, this system will also bring substantial improvements to air quality. Conditions will improve throughout the morning as southerly winds scatter smoke particles, the surface mixes with cleaner air aloft, and rain washes out most of the remaining smoke.

Sunday will be a true fall day with some remaining showers in the mountains, cool conditions, and some sun in the afternoon. Temperatures for most locations will be mid-60s to low 70s, while Hells Canyon in Idaho will warm to around 80.

Next week the flow will eventually return to southwesterly, most likely after Tuesday. A return of smoke from west coast fires is likely; however, without a ridge of high pressure to stagnate things each day we should mix out and have some wind. Therefore smoke should not be as thick as this week.

AVIATION. Poor visibility due to smoke will slowly improve during the morning for KMSO and KGPI, while both KBTM and KSMN have already cleared out. Ceilings will lower as showers increase in both coverage and intensity through the morning, obscuring the higher terrain at times. KSMN and KBTM both have the possibility of a thunderstorm this morning, generally after 19/1100z. During the afternoon there may be sufficient instability for isolated thunderstorms across all of western Montana and central Idaho. Shower activity will continue overnight but begin to shift north and east. Sunday will see any leftover showers constrained to the mountains, with the terminals clearing and VFR conditions.

MSO WATCHES/WARNINGS/ADVISORIES. MT . None. ID . None.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Missoula, Missoula International Airport, MT6 mi41 minSE 62.50 miLight Rain Fog/Mist55°F52°F90%1014.2 hPa

Link to 5 minute data for KMSO

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Last 24hrCalmCalmCalmS5CalmCalmCalmCalmCalmCalmNW7SE6SW4SW10NW9N8NW5W6NW6NW7SW35CalmSE6
1 day agoCalmCalmSW3CalmCalmCalmCalmN3CalmCalmCalmSE6SE6SE4W3NE3CalmCalmCalmCalmCalmCalmCalmS3
2 days agoW3Calm4CalmS3CalmW3CalmCalmCalmNE3E4E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

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
Ground Weather Radar Station Missoula, MT
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