Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
South Glastonbury, MT

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 7:07AMSunset 7:27PM Wednesday September 19, 2018 2:51 PM MDT (20:51 UTC) Moonrise 4:01PMMoonset 12:36AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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 191625
afdbyz
area forecast discussion... Updated
national weather service billings mt
1025 am mdt Wed sep 19 2018

Update
Southwest flow will deepen today as the upper trough approaches with
areas of isolated to scattered showers and thunderstorms. Main
update was to decrease shower chances over southwestern areas for
today, as latest guidance suggests most of the shower activity
will be over northern and eastern areas. Otherwise, the rest of
the forecast is on track and the previous forecast discussion and
an updated aviation discussion is below. Stp

Short term Valid for tdy and thu...

only minor changes this morning, confined to collaboration of
pops. Models continue to be in good agreement on cool and unsettled
weather through the short term period.

Southwest flow continues to deepen today, as upper level trof
moves toward western montana. Energy moving through the region
and southeast flow near the surface will allow isolated to
scattered showers and thunderstorms to become more widespread
through the day. Shower chances increase tonight and Thursday as
the upper trough moves over the region. Isolated thunderstorms
are also possible in many locations, with some weak instability
in place. Precipitation is expected to clear fairly quickly from
west to east Thursday evening, as the upper trough moves east into
the dakotas.

Winds could be a bit breezy Thursday as trof exits the region.

Winds will taper off from west to east as trof proceeds eastward.

Precipitation totals from Wednesday through Thursday look to
range from 0.10 to 0.25 inches over western and southern areas, to
0.50 inches or more over northern and eastern areas. Temperatures
aloft should get cold enough to support light snow accumulations
in the mountains above 9,000 feet on Thursday morning. At this
time, beartooth highway conditions do not appear to be an issue,
but will need to continue to monitor for potential impacts.

High temperatures will range from the 50s to lower 60s both
Wednesday and Thursday, with lows in the 30s to 40s tonight
through Thursday night. Aag

Long term Valid for fri... Sat... Sun... Mon... Tue...

we continue to anticipate a dry warming trend Friday and Saturday
thanks to low amplitude ridging and westerly flow behind the
trough mentioned in the short term. The storm track will generally
remain to the north along the canadian border during this time. By
the latter half of the weekend a trough develops over the pacific
nw and moves inland. Details, including the strength of this
trough, are still in question to some degree as the GFS and ecmwf
are not in real good agreement yet. However, it does appear that
some showers will move into the western zones Sunday afternoon and
spread across the CWA Sunday night. Cyclonic flow aloft will
remain over our region Monday into Tuesday... Slowly transitioning
to NW flow as the trough axis slides east. This will put us at
risk for occasional isolated to scattered showers next week with
temps below normal. Bt

Aviation
Areas of MVFR with local ifr will increase today along with areas
of rain showers and isolated thunderstorms. The showers initially
will occur northeast of k3ht-kbil-kshr during the midday hours
and then expand southwestward to much of southern mt and northern
wy this evening. Mountains will become obscured today and into
tonight. Surface winds will be E NE with S SW winds aloft. Bt rms

Preliminary point temp pops
Tdy Thu Fri Sat Sun Mon tue
-------------------------------------------------------
bil 054 045 058 039 070 046 075 047 066 044 060 042 062
3 W 75 W 10 u 00 b 02 W 43 W 33 w
lvm 057 040 057 035 068 044 074 044 064 039 059 037 062
2 t 44 W 10 u 00 b 12 W 23 W 23 w
hdn 059 046 058 039 071 046 077 047 069 045 062 043 064
3 W 85 W 10 u 00 b 02 W 43 W 33 w
mls 061 048 051 038 066 047 073 049 066 047 061 045 062
4 W 89 W 30 b 00 b 22 W 33 W 32 w
4bq 061 049 056 037 067 046 076 050 072 048 063 045 063
4 W 88 W 10 u 00 u 00 b 33 W 32 w
bhk 060 044 047 033 060 043 071 046 066 045 059 044 060
3 W 89 W 40 b 00 b 01 b 33 W 22 w
shr 062 044 059 037 071 045 077 047 072 044 062 040 062
2 t 74 W 10 u 00 u 01 b 33 W 22 w

Byz watches warnings advisories
Mt... None.

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 mi1.9 hrsNW 710.00 miOvercast59°F45°F60%1015 hPa

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Last 24hrNW8N5W6W8NW6NW8CalmS8W5NW7SW5SW6SW6SW4SW5SW8SW4CalmW7W4W34NW7W6
1 day agoN5NW8N5NW4CalmS5SW8SW11N3W3CalmNE7CalmS5CalmCalmNE3S5Calm3N435NW5
2 days ago3NW64NW6E6S3NW9NE4SW6W8W7SW8SW4CalmS3SE7S6SE3S5S33Calm4NW8

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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wmap_P
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Billings, MT (16,3,4,5)
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Ground Weather Radar Station Billings, MT
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Disclaimer:
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.