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 11:58 PM MDT (05:58 UTC)||Moonrise 2:50PM||Moonset 3:53AM||Illumination 83%|
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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 252039|
area forecast discussion
national weather service missoula mt
239 pm mdt Wed apr 25 2018
Discussion A wave of energy moving south out of canada has led
to mainly some increased cloud cover and a few showers along the
continental divide. This cloud cover will decrease late this
afternoon and evening. Temperatures tonight are expected to stay
slightly warmer than previous nights due to a light easterly wind.
High pressure re-establishes over the region for Thursday into
Friday, bringing plentiful sunshine and well above normal
temperatures to the region. Friday is still expected to be the
warmest day of the week, with many valleys reaching into the upper
70s to low 80s! The warm temperatures will continue to ramp up
snow melt, particularly in the lower elevations. This will lead to
fairly rapid rises on area streams and rivers.
Model guidance continues to support a major change in the weather
Saturday as a low pressure system impacts western montana and
north central idaho Saturday afternoon through Monday afternoon.
A round of isolated to scattered thunderstorms will be possible
Saturday afternoon and evening. Moist southwest flow, steep mid-
level lapse rates, and modest instability Saturday afternoon ahead
of the approaching upper level trough will support thunderstorm
activity across north- central idaho and southwestern montana.
Attention then shifts to Sunday and most of Monday as the slow
moving system moves east of the continental divide and taps into
gulf of mexico moisture from the plains. The system will wrap
moisture around and over the divide and into western montana.
There is below normal confidence among model guidance on where the
heaviest precipitation will occur across western montana and
north-central idaho. However, model guidance does agree on a long-
duration rain event, with moderate rain falling for 12-24+ hours.|
There is a significant chance that somewhere in western montana
and north-central idaho will receive 1 to 2+ inches of new rain
this weekend. For those who may be impacted by potential flooding
from rivers and creeks, please read the hydrology section below
for additional details.
Aviation A north to east breeze will develop around 26 00z at
gpi and along the continental divide, with winds gusting as high
as 20 knots this evening at all the terminals except for smn.
Winds will likely continue through the night, though speeds will
diminish slightly. Other than the middle to high clouds and a few
showers along the divide, expectVFR conditions to continue into
tonight. Plentiful sunshine and warm conditions will return for
Significant rises in creeks and rivers are possible Sunday into
Monday. Low elevation snowmelt from abnormally high temperatures
Thursday and Friday will continue to bring rises in creeks and
rivers. Rainfall amounts of 1 to 2+ inches are expected over much
of the area associated with the incoming storm system this
weekend. The expected rainfall, combined with lower elevation
snowmelt, could cause some flooding problems, especially for
smaller creeks. Significant rises are also expected for many of
the rivers, including possible quick rises on the south fork of
the clearwater river. Rock slides and water running across
roadways may also occur. In northwest montana, the yaak and fisher
rivers could exceed flood stage by late Sunday night into Monday
Mso watches warnings advisories
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|Kalispell, Glacier Park International Airport, MT||42 mi||63 min||N 0||10.00 mi||Fair||45°F||32°F||61%||1021.3 hPa|
Wind History from GPI (wind in knots)
|1 day ago||W||Calm||Calm||W||Calm||NW||Calm||N||NE||NE||Calm||N||SE||S||S||S||W||Calm||Calm|
|2 days ago||N||N||N||N||N||N||Calm||N||Calm||NE||E||E||S||NE||SE||N||NE||S||Calm||Calm||W |
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Missoula, MT (1,6,7,8)(on/off)  Help
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