Monday, May20, 2019

Marine Weather and Tides
Silver Gate, 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 5:45AMSunset 8:55PM Monday May 20, 2019 3:31 PM MDT (21:31 UTC) Moonrise 9:54PMMoonset 6:16AM Illumination 97% Phase: Waning Gibbous; Moon at 17 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 Silver Gate, MT
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location: 45.05, -110     debug

Area Discussion for - Billings, MT
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Fxus65 kbyz 202122
area forecast discussion
national weather service billings mt
322 pm mdt Mon may 20 2019

Short term Valid for Tue and wed...

strong upper level low near the 4 corners region beginning to lift
across new mexico on its way to nebraska by Tuesday afternoon and
then tracking across the dakotas on Wednesday. Ahead of this
system southern montana and northern wyoming remain under a cold
easterly flow regime with a moist atmosphere and wet ground that
is not experience any evaporation. Precipitation this evening will
be light but increasing towards Tuesday morning as deeper moisture
is pumped into the region ahead of the southern upper low. Upper
level support becomes a bigger factor late on Tuesday as the upper
low has a stronger influence on the area and the mid level flow
changes from southeasterly to east northeasterly. Later on
Wednesday the upper low moving into the dakotas allows surface
high pressure to deepen and lower level winds begin to weaken
which slows down upslope influences.

Rainfall is expected to be widespread Tuesday afternoon through
Wednesday morning with favored upslope locations seeing the
greatest amounts. Amounts of 1 to 2 inches are like with a few
favored locations approaching 2.5 inches. This rain is going to
falling onto ground that is moist and is going to quickly
translate into runoff which is going to produce localized flooding
and could induce strong rises on some more sensitive basins like
the little big horn river, pryor creek and goose creek. However
the cold conditions are limiting snowmelt so the larger rivers
will have a capacity to handle rising water. An areal flood watch
has been issued for all of the area except for park, stillwater
and sweet grass counties for the rising water threat.

The cold temperatures are going to contribute to significant
mountain snow especially for the east aspects of the
crazy... Beartooth absaroka and bighorn mountains. Accumulations
around 12 inches are possible above 7000 feet and will have to
watch for foothills locations like red lodge if temperatures cool
further than expected. Winter storm watch for the mountains looks
good. For lower elevations snow concerns are diminished from the
previous system as 850mb progged temperatures are a couple of
degrees warmer than this weekend system. Will be tracking
dewpoints to see if a bit drier air over northwest north dakota
gets entrained into the system and pushes temperatures lower due
to evaporative cooling.


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

unsettled weather will continue Thursday as an upper low over the
rockies prevails. Model consensus has that upper low lifting ne
into the dakotas by midday Friday. So we are expecting at least a
temporary reprieve (aside from a few showers or thunderstorms
Saturday afternoon) from the widespread rainy conditions this
weekend. Look for highs in the 50s to lower 60s Friday through

Ensembles means do suggest another upper low or trough
digging deep along the west coast this weekend and then moving
inland early next week. There is a wide spread of solutions as to
how this may play out, but it could bring another round of
widespread precipitation Monday or Tuesday. However, the pattern
does not seem to support as cool temperatures as we are currently
experiencing. By the middle to latter part of next week the
amplitude of trough ridge couplets seems to decrease. This would
mean temperatures which are more seasonal with a more typical
chance of afternoon showers and thunderstorms. Bt
Saturday starts out dry but another strong upper
low develops to the west of the area, and although it drops south
into the southern great basin over the weekend, it induces a
northeast low level wind for upslope enhanced showers and
thunderstorms through the weekend into early next week. At this
point precipitation chances look much lower for the weekend than
what we will see during the week, but having that upper low to the
west and south of the area does cause some concern. Precipitation
chances could go higher if the track shifts just a bit further
north. Those with outdoor travel plans for the holiday weekend
should pay close attention to the forecast through the week. The
good news is that temperatures slowly climb through the week and
should be in the 60s by Saturday. Chambers

Areas of MVFR will be common thre rest of the day and into the
evening. Look for many locations to see ceilings start to drop
tonight with areas of precipitation moving in from the S SE as we
head into Tuesday. Ifr conditions will be common Tuesday. Expect
mountain obscuration conditions to prevail for at least the next
24 hrs. Bt

Preliminary point temp pops
Tue Wed Thu Fri Sat Sun mon
bil 039 046 039 047 039 050 040 060 042 066 046 061 043 056
37 o +9 r 76 W 62 W 23 t 23 t 44 t
lvm 036 047 036 045 036 048 036 057 039 061 041 058 040 055
56 t 99 o 65 W 43 W 24 t 34 t 53 t
hdn 039 047 038 048 036 050 039 059 040 067 044 063 042 056
29 o +9 r 67 W 73 W 12 t 23 t 44 t
mls 039 049 039 051 036 053 041 058 041 067 045 064 042 059
68 r +9 r 46 W 75 W 12 t 22 t 34 t
4bq 036 046 036 046 035 050 038 057 039 066 044 064 042 057
9+ o +9 o 37 W 83 W 12 t 23 t 44 t
bhk 036 048 036 048 034 052 039 056 037 064 043 063 040 056
88 r 99 r 36 W 85 W 12 t 23 t 44 t
shr 035 046 034 045 032 046 034 058 037 064 041 062 040 056
69 o 99 o 58 W 72 W 11 u 24 t 44 t

Byz watches warnings advisories
Mt... Flood watch in effect from late Tuesday night through
Saturday morning for zones 28>33-35>39-42-56>58-63-67-68.

Winter storm watch in effect from Tuesday morning through
Wednesday evening for zones 67-68.

Wy... Flood watch in effect from late Tuesday night through
Saturday morning for zones 98-99.

Winter storm watch in effect from Tuesday morning through
Wednesday evening for zone 98.

Weather.Gov billings

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from P60 (wind in knots)
Last 24hrCalm3
1 day ago3Calm--465NW7W8
2 days agoE5E4CalmW6

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 (17,4,5,8)
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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 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.