Marine Weather and Tides
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.
|Sunrise 7:29AM||Sunset 7:57PM||Thursday March 23, 2017 2:14 AM MDT (08:14 UTC)||Moonrise 4:15AM||Moonset 2:04PM||Illumination 19%|
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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 222018|
area forecast discussion
national weather service missoula mt
218 pm mdt Wed mar 22 2017
Discussion Showers will become more numerous this afternoon and
evening as a weak weather disturbance approaches the region. There
is enough atmospheric instability today that a few thunderstorms
will be possible, mainly through central idaho and near the
idaho/western montana border. Precipitation should largely be on
the decrease after midnight tonight. Fog development will be
possible where precipitation falls this evening, however cloud
cover should keep coverage to a minimum.
A roughly 24 hour period of dry conditions is expected Thursday
into Friday morning. Temperatures will run a few degrees below
seasonal normals with some sunshine expected Thursday afternoon
The next weather disturbance will begin to move cloud cover and
precipitation into the region Friday afternoon, lingering into
Saturday. Breezy southerly winds will develop Friday afternoon
ahead of this system. Roughly 0.25" to 0.50" of precipitation is
expected Friday evening into Saturday morning, with the bulk of
it falling across northwest montana and central idaho. Snow levels|
will lower enough towards Saturday morning that a light dusting of
snow will be possible on high elevation passes, such as lost
trail and macdonald passes in southwest montana.
Spring-like weather will continue into next week with brief
periods of dry conditions followed by weather disturbances
capable of showers.
Aviation Scattered showers will continue to form this afternoon
and evening. An isolated strike of lightning before sunset cannot
be ruled out, but atmospheric instability is limited, so most
showers will simply consist of brief-lived (15 minutes or so each)
moderate rain. The other item of note for aviators is a likely
repeat of morning fog at kgpi: the near-surface layer is almost
saturated, so after 23/0600z, fog will likely begin to form,
becoming thickest for a few hours around sunrise. Other sites are
less likely to form fog, as they have less saturated boundary
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
|Kalispell, Glacier Park International Airport, MT||42 mi||19 min||N 0||4.00 mi||Fog/Mist||37°F||37°F||100%||1013.4 hPa|
Wind History from GPI (wind in knots)
|1 day ago||N||N||N||N||N||N||NE||NE|
|2 days ago||SW||SW||N||W||N||N||N||N||NE||NE||NE||N||N||N||NE||N||N||NE||N||NE||NE||N||N||N |
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Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of PacificNorthwest EDIT
Wind Forecast for Missoula, MT (4,6,7,8)(on/off)  Help
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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 numerious 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.