Tuesday, March26, 2019 L-36.com

Marine Weather and Tides
South Glastonbury, MT

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:13AMSunset 7:45PM Tuesday March 26, 2019 4:26 AM MDT (10:26 UTC) Moonrise 12:25AMMoonset 9:54AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 South Glastonbury, MT
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location: 45.26, -111     debug

Area Discussion for - Billings, MT
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Fxus65 kbyz 260956
area forecast discussion
national weather service billings mt
356 am mdt Tue mar 26 2019

Short term Valid for tdy and wed...

an upper ridge is over the northern rockies this morning,
supplying dry weather for western and central portions of the
area. Low-level southeast winds have advected moisture into fallon
and carter counties and contributed to fog development there
overnight. The fog will continue for the next few hours before
gradually dissipating as winds shift to a more
south southwesterly direction.

The upper ridge will move eastward today and introduce
southwesterly flow overhead. A disturbance embedded in the upper
flow will then track along the mt canadian border and place a
surface pressure gradient over our area favorable for downslope
winds. The downsloping should help temperatures rise to the 60s
and lower 70s over much of the area. The disturbance will then
send a cold front across the area tonight, which will cause high
temperatures on Wednesday to be about 10 degrees lower than
today's forecast high temperatures.

Despite the drier weather conditions today, the warmer air and
solar heating will continue to cause concern for hydrologic
issues over the region. Many rural roads and low-lying spots
across the area are being impacted by water from the ongoing lower
elevation snow melt. Biggest impact is along the little bighorn
river as i-90 remains closed from hardin to the wy line as of this
writing. Please see the hydrologic outlook for additional
information on the hydrologic concerns.

Precipitation will then begin to affect the region tonight as
southwesterly flow will cause some snowfall to develop over the
beartooth absaroka and crazy mountains. The precipitation will
have a difficult time moving off the mountains to the lower
elevations tonight into Wednesday due to some dry air in the
lower levels, but it will begin to reach the surface even in the
lower elevations by Wednesday night as the lower levels saturate.

Precipitation should be mostly snow in the mountains. In the lower
elevations... Precipitation should begin as rain and then change to
snow sometime Wednesday evening or overnight as colder air is
drawn into the region. This precipitation event will likely
continue into part of Friday as an upper trough low tracks from
id to wy. Heavy snow is possible over the beartooth absaroka crazy
mountains and adjacent foothills, so have issued a winter storm
watch there from Wednesday through Friday. Accumulating snow is
also possible northeast of the watch area but amounts should be
lower than in the foothill mountain locations. Please stay tuned
for updates on this system. Rms

Long term Valid for thu... Fri... Sat... Sun... Mon...

a powerfull spring storm will take hold of south central montana
and northern wyoming Thursday. Moisture will spread over the area,
with cold air in place (850mb temperatures below zero). Raised
pops further with steady snow expected through the day. The snow
will be heavy at times, especially over the mountains, foothills
and higher hills. The snow will continue Thursday night, tapering
off early Friday.

The mountains will be looking at one to two feet of snow by the
time the snow tapers off Friday afternoon. The foothills and
higher western hills, could pick up a foot of heavy snow. For the
plains, accumulations are much harder to quantify this time of
year. The high Sun angle and warming ground, plays havoc on snow
accumulation that starts during the day (which will be the case
here). QPF amounts of .4 to .7 would suggest 3 to 6 inches for
billings, with more possible on the higher hills.

The heavy and wet nature of the snow could lead to major concerns
for young livestock and possible power outages. The bigger
concern, however, may be the water being added to an already
saturated ground and swollen river system. This water content
could certainly exacerbate existing flooding. Adding snow to melt
later when temperatures warm up, will be another concern from this
event. Twh

An area of ifr-lifr ceilings and visibilities will linger along
the mt dakotas border, including at kbhk, this morning. A
combination of fog and low clouds will continue to impact eastern
areas (kmls to kshr to 4bq) until around 18z. These locations will
have improving conditions by around 18z. Further west,VFR flight
conditions will prevail through the day with scattered to broken
high clouds. Southwest winds will gust to near 30 kts at times at
klvm. Twh

Preliminary point temp pops
Tdy Wed Thu Fri Sat Sun mon
bil 068 037 058 032 039 030 042 027 050 031 055 033 055
0 b 12 W 78 o 86 o 21 b 11 b 22 o
lvm 060 029 047 025 035 022 035 018 041 022 045 025 046
0 N 15 W 78 S 86 S 11 b 11 b 22 o
hdn 068 032 060 030 041 028 041 023 050 026 055 029 056
0 b 11 E 67 o 76 o 21 b 01 b 12 o
mls 067 037 058 031 042 028 043 025 049 029 055 031 054
0 b 10 b 56 o 73 S 10 b 01 b 12 r
4bq 068 036 061 032 043 030 041 025 048 028 054 031 056
0 b 00 b 57 o 76 o 20 b 01 b 12 o
bhk 064 035 056 029 040 027 041 023 046 026 054 028 053
0 b 00 b 55 o 52 S 10 b 00 b 11 b
shr 070 033 059 030 041 028 039 023 046 025 051 028 053
0 b 01 b 58 o 88 o 21 b 00 b 12 o

Byz watches warnings advisories
Mt... Winter storm watch in effect from Wednesday evening through
Friday morning for zones 40-41-56-64>66.

Winter storm watch in effect from Wednesday morning through
Friday afternoon for zones 67-68.

Wy... None.

Weather.Gov billings

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bozeman, Gallatin Field, MT37 mi31 minS 310.00 miFair31°F24°F76%1018.7 hPa

Wind History from BZN (wind in knots)
Last 24hrCalmCalmNW3CalmCalmCalmNE4N3NE3NW4E5W4N3CalmE3CalmNE3SE4CalmCalmSW3SE3SE3S3
1 day agoCalmCalmS4CalmCalmNW4CalmCalmN3N3N3NE5CalmE3E4S3CalmSW3S3SW4CalmCalmW3Calm
2 days agoSE4S4NE3CalmCalmCalmCalmCalmN3CalmCalmCalmNE3NE3CalmCalmCalmSW4SW7CalmCalmCalmS4Calm

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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GOES Local Image of    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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Wind Forecast for Billings, MT (6,6,7,8)
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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 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.