Marine Weather and Tides
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
|Sunrise 6:25AM||Sunset 8:44PM||Wednesday April 25, 2018 12:08 PM MDT (18:08 UTC)||Moonrise 2:50PM||Moonset 3:53AM||Illumination 79%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Lakeside, MTHourly EDIT Help
Area Discussion for - Missoula, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 kmso 250935|
area forecast discussion
national weather service missoula mt
335 am mdt Wed apr 25 2018
Highlights through Friday:
1) 10 to 20 degrees above normal high temperatures.
2) 20s to 30s low temperatures possible each morning many valley
3) rivers rising 1 to 2 feet
a weather disturbance will bring some clouds over the region through
this afternoon, but skies should clear by tonight. With a high
pressure system building east of the continental divide, a north
to east breeze will develop this afternoon into tonight.
Only minor changes to the forecast for next weekend. Saturday
continues to look like a good day for thunderstorms due to a deep
trough and low pressure system arriving on the west coast. Moist
southwest flow into central idaho and western montana will cause
some thunderstorms, but areas north of st. Ignatius and seeley
lake have much less of a chance for thunder the way the models
currently look. Models of course disagree on the exact timing and
location of the low, but generally models agree very well on the
big picture of a low pressure system moving into the region.
Saturday night, Sunday, and most of Monday this slow moving system
moves east of the continental divide and taps into gulf of mexico
moisture from the plains. It then wraps that moisture around over
the divide and into western montana. There is considerable
differences among models where the heaviest precipitation will be,
but most models currently place 12-24 hours of moderate rain over|
some portion of western montana. There is a significant chance
that somewhere in western montana will receive 1 to 2 inches of
new rain this weekend. For those who may be affected by this
please read the hydrology section below for more details.
Aviation A 1025 millibar high pressure system will build east
of the continental divide later today causing a north to east
breeze to develop after 25 18z at gpi and along the continental
divide by or after 26 00z. Winds could gust as high as 20 knots
this evening at all the terminals except for smn. Other than the
middle to high clouds and a few showers along the divide, expect
vfr conditions today. Continued warm and dry Thursday withVFR
Hydrology The week got off to a warm start, and as we head into
the middle and end of the week we are seeing some warm
temperatures in the mountains with many locations staying in the
upper 30s and 40s overnight. This combined with warm daytime
temperatures is causing rivers to rise as is typical this time of
year. A few rivers currently have forecasts near flood stage early
next week, mainly in northwest montana. However, the very wet
system that is forecast late next weekend is very concerning. One
to two days of moderate rain would add significantly to run-off
and contribute to small stream and river flooding. This is far
enough out in the forecast that uncertainty in timing and
intensity makes it imprudent to issue a watch or warning, however
we will be watching this system very closely.
Mso watches warnings advisories
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||18 mi||74 min||N 0||10.00 mi||Mostly Cloudy||48°F||30°F||52%||1020.5 hPa|
Wind History from GPI (wind in knots)
|1 day ago||S||NE||SE||N||NE||S||Calm||Calm||W||W||Calm||Calm||W||Calm||NW||Calm||N||NE||NE||Calm|
|2 days ago||E||S||S||S||S||N||Calm||NW||Calm||N||N||N||N||N||N||Calm||N||Calm||NE||E||E|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  HelpWeather Map
GOES 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 (14,3,4,5)(on/off)  Help
Ad by Google
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.