Sunday, September20, 2020
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L-36.com

Marine Weather and Tides
Polson, 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 7:20AMSunset 7:40PM Sunday September 20, 2020 5:27 AM MDT (11:27 UTC) Moonrise 10:26AMMoonset 8:39PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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 Polson, MT
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location: 47.7, -114.16     debug


Area Discussion for - Missoula, MT
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FXUS65 KMSO 200850 AFDMSO

Area Forecast Discussion National Weather Service Missoula MT 250 AM MDT Sun Sep 20 2020

DISCUSSION. A few remaining light showers will linger in the terrain and along the Continental Divide through late morning. For the rest of us a clearing and cool day is in store. Both Monday and Tuesday mornings higher valleys could see pockets of freezing temperatures, especially along the Continental Divide and in typical spots in Central Idaho.

The next week can be characterized by slightly warmer than normal temperatures through Thursday. A system on Tuesday will cause increased cloudiness and temper afternoon highs, along with bringing scattered showers in the mountains, especially along the Divide in northwest Montana.

Smoke from regional fires will likely return late Monday into Tuesday. Unlike conditions experienced the previous week, the atmosphere will not be as stable and afternoons will be breezier lessening the air quality impacts.

Thursday onward, our next weather maker will begin to affect the Northern Rockies. The models have differing solutions for how it plays out, but similar to this weekend's system expect showers and cool temperatures for most. One feature the models do agree on is the trough will have upper level jet support. Thursday in particular and possibly Friday will be very breezy days in the northern Rockies.

Of interest the US Global model solution does have the trough digging south and possibly bringing beneficial rain to at least Oregon, in areas with regional wildfires that need it, we shall see.

AVIATION. Scattered showers in the mountains, especially along the Continental Divide will remain through late morning. Lowered visibility due to patchy fog is in the forecast for KMSO this morning through 20/1400z, additionally KGPI may experience some ground fog in the vicinity but it is less likely at the terminal. During the afternoon gradual clearing will occur and VFR conditions can be expected the rest of the period.

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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kalispell, Glacier Park International Airport, MT42 mi33 minSSE 710.00 miOvercast56°F48°F77%1014.3 hPa

Link to 5 minute data for KGPI

Wind History from GPI (wind in knots)
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Last 24hrE5CalmS3S7S5S5SE6SE9SE9SE11SE13S8S9SE11SW11S8S8S8S6S9S8SE9S7SE7
1 day agoCalmW3CalmNW4W4NE7N5NE5CalmSE4CalmS3S5S3CalmCalmSW3CalmNW3CalmSW7SW5S8Calm
2 days agoW4N3W3Calm--6NE75SE33------SW3CalmSW3CalmCalmNW43CalmCalmCalmW6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_P
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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