Monday, February19, 2018

Marine Weather and Tides
Bozeman, MT

Version 3.4
What's New / NOTES
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.
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.

Sunrise 7:16AMSunset 5:59PM Monday February 19, 2018 12:37 PM MST (19:37 UTC) Moonrise 9:23AMMoonset 10:09PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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 Bozeman, MT
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location: 45.71, -110.99     debug

Area Discussion for - Billings, MT
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Fxus65 kbyz 191607
area forecast discussion... Updated
national weather service billings mt
907 am mst Mon feb 19 2018

Light snow will continue across much of area today. Updated pop's
to raise them up to categorical for morning as still good
overrunning occurring. Should still taper off late and into
tonight. Bt

Short term Valid for tdy and tue...

light snow was ongoing across much of the area this morning as
energy and moisture streamed in from the southwest as an upper
level trough dug over the northern rockies. Periods of light snow
will continue over the area today as vort maxes move through the
region. Outside of eastern areas, most places should see an inch
or less of additional snow accumulation today, as snow ratios
will remain low. Have gone ahead and cancelled the winter storm
warnings and winter weather advisories for our central and western
zones, and kept the winter weather advisory for powder river and
carter counties going through the evening. 1 to 3 inches of
additional snow accumulations are expected in these areas. Have
gone ahead and hoisted wind chill advisories for the judith gap
and livingston areas through morning, with winds causing wind
chills to range from 20 to 30 below zero. Temperatures will
struggle to make it above zero for many areas today.

Precipitation will slide east tonight as the upper trough moves
overhead and a cold surface high moves over the area. With
decreasing cloud cover and ample snow cover, temperatures will
bottom out in the teens below zero tonight, with some areas closer
to twenty below zero. Low temperature records are possible at
livingston, billings, and sheridan. Drier conditions are expected
for Tuesday with highs in the single digits above zero. A shortwave
moves into northern montana late Tuesday night with a few snow
showers possible over the western mountains. Low temperatures
Tuesday night will range from the single digits below zero west,
to the teens below zero across central and eastern areas. Stp

Long term Valid for wed... Thu... Fri... Sat... Sun...

a series of reinforcing western u.S. Trofs will keep temperatures
from rising very quickly through the week. Guidance keeps
widespread sub zero low temperatures through at least Friday morning
and maybe into Saturday morning if the ECMWF is correct. Highs
will make it back to the 20s by Friday with lower 30s by Saturday
as downslope winds kick in ahead of a stronger upper disturbance
for Sunday Monday.

Moisture advection into the western mountains looks good through
the period with good chances for additional snow into the cooke
city area. But models are advertising mainly dry conditions over
the lower elevations until Sunday Monday time frame. Can't rule
out a few light snow showers mixed in at times through the week
but nothing impactful. Chambers

Widespread ifr conditions expected through at least early
afternoon with light snow continuing. Local lifr or lower
conditions possible in upslope favored areas where a period of
morning fog may develop, including kbil. Conditions will improve
from northwest to southeast starting this afternoon as the storm
system shifts southeast of the area. May be mid day Tuesday before
widespreadVFR conditions are in place. Chambers

Preliminary point temp pops
Tdy Tue Wed Thu Fri Sat sun
bil 001 917 006 910 014 907 016 905 024 005 031 014 030
9 S 31 b 10 b 01 u 11 u 12 j 22 j
lvm 002 917 010 906 018 901 021 001 028 011 032 015 031
3 S 21 u 12 j 11 b 11 b 13 j 43 j
hdn 003 919 008 915 013 910 014 910 023 001 030 010 029
9 S 41 b 10 b 00 u 11 b 01 b 22 j
mls 001 913 005 916 008 912 008 910 015 000 023 005 022
8 S 41 b 00 b 00 u 10 b 01 b 12 j
4bq 003 914 005 917 012 909 012 907 020 001 026 009 027
8 S 51 b 00 b 01 u 11 b 01 b 11 b
bhk 003 912 004 914 010 911 012 907 015 003 024 007 024
8 S 61 b 00 u 00 u 10 b 01 b 11 n
shr 001 918 006 917 015 909 017 906 025 002 030 009 030
9 S 31 b 10 b 01 b 11 b 01 b 21 b

Byz watches warnings advisories
Mt... Winter weather advisory in effect until 11 pm mst this
evening for zones 36-37.

Wind chill advisory in effect until 11 am mst this morning
for zones 63-65.

Wy... None.

Weather.Gov billings

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bozeman, Gallatin Field, MT10 mi1.7 hrsNE 410.00 miFair1°F-9°F62%1021.4 hPa

Wind History from BZN (wind in knots)
Last 24hrNW10NW8W9W7SW10SW6SE10NW7W7W7W11W9SW6W6NW9NW10N10SW7W10N10CalmN3NE4NW7
1 day agoSW17
2 days agoSW9SW14SW10SW13SW15SW9

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of NorthernPlains    EDIT

Wind Forecast for Billings, MT (14,3,4,5)
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Ground Weather Radar Station Billings, MT
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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 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 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.