Friday, February28, 2020
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Marine Weather and Tides
Lakeside, 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 7:18AMSunset 6:20PM Friday February 28, 2020 2:34 PM MST (21:34 UTC) Moonrise 9:41AMMoonset 11:35PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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 Lakeside, MT
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location: 48.04, -114.22     debug


Area Discussion for - Missoula, MT
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FXUS65 KMSO 280957 AFDMSO

Area Forecast Discussion National Weather Service Missoula MT 257 AM MST Fri Feb 28 2020

DISCUSSION. Temperatures today will be running some ten degrees above normal with pre-front warm air advection reaching its peak across the Northern Rockies. Sunshine should be abundant, at least through this morning. But increasing clouds late in the day will be the first indicators of a pending change in the weather on Saturday.

That change, in the form of a cold front, will quickly sweep across Idaho and Montana throughout the day. Models have maintained their timing of the past two days which places frontal passage in NW Montana and Kalispell by mid-morning, Missoula around lunchtime and ultimately through Lemhi County, Idaho and SW Montana (Butte area) during the afternoon. Overall there has been a decreasing trend in the overall amounts of precipitation. However, the flow pattern will be somewhat favorable throughout much of the terrain where 2 to 5 inches of new snow seem likely. Upwards of 6 to 8 inches are expected atop some of the higher peaks of the Bitterroot Mountains north of US-12 and especially across the southern Mission Mountains. But all things considered it seems that there will be minimal public impact due to the short duration of snow. Thus Winter Weather Advisories seem unlikely at this time.

Moist NW flow aloft will persist over an unstable, post-frontal environment, leading to a fairly steady diet of snow showers on Sunday and Monday. By mid-week an even stronger jet stream within the NW-W flow will usher in a plume of deep atmospheric moisture and wind across the region. This combination, in concert with our complex terrain will lead to upslope enhanced heavy snow along the Idaho/Montana border and Seeley/Swan Region. While it's still too early to focus on specific numbers, this pattern has the hallmark of a heavy mountain snowfall event capable of producing 1 to 2 feet of snow. However the strong winds at mountain top layer will likely lead to down sloping in the valleys and perhaps some notable wind gusts.

Drier weather and above normal temperatures at this time seem possible to finish next week.

AVIATION. Clouds will increase across the Northern Rockies today. And while some terrain across NW Montana could start to be obscured late tonight, any impact to area ceiling heights will not occur until Saturday morning. In general, pleasant flying conditions are expected over the next 24 hours.

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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KGPI

Wind History from GPI (wind in knots)
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Last 24hrSW4SW3SE6NE3N4CalmSE9SE6NE4CalmCalmCalmCalmN3CalmS3CalmSW4SW3SW5CalmCalmCalmCalm
1 day agoCalmCalmCalmN3CalmCalmCalmCalmCalmCalmE3N3CalmCalmNW3CalmCalmCalmCalmCalmCalmCalmCalmW3
2 days ago----------E7SE5SE6SE5SW7SW7W9SE3SW3CalmCalmCalmCalmSW3S5W3CalmCalmCalm

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
Wind Forecast for Missoula, MT (16,3,4,5)
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Ground Weather Radar Station Missoula, MT
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weather_mapweather_map weather_map

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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.