Sunday, May31, 2020
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Marine Weather and Tides
Gardiner, MT

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:36AMSunset 9:07PM Sunday May 31, 2020 11:28 AM MDT (17:28 UTC) Moonrise 1:53PMMoonset 2:06AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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 Gardiner, MT
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location: 45.05, -110.74     debug


Area Discussion for - Billings, MT
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FXUS65 KBYZ 311611 AFDBYZ

Area Forecast Discussion . Updated National Weather Service Billings MT 1011 AM MDT Sun May 31 2020

UPDATE.

Very warm day expected today along with some thunderstorm activity, mainly east of Billings. Some mid level clouds are currently moving across the forecast area this morning but skies are expected to become partly to mostly sunny by early afternoon for most areas. An upper level disturbance and surface cold front will move across the forecast area today resulting in the chance for a few thunderstorms. The highest chances will be across east/southeast Montana this afternoon into this evening where a few thunderstorms could be strong to severe. The previous forecast has this handled well. The only update this morning was to remove shower/thunderstorm chances for the morning from Billings westward. Hooley

DISCUSSION.

Bottom Line up front . Near record highs possible today with windy conditions developing in the western foothills, and possibly isolated severe thunderstorms in southeast Montana in the afternoon through early evening.

Pronounced upper ridge axis has shifted over the Montana/Dakota border this morning. Upper trough over Pacific NW will eject a vigorous short wave trough up and over the ridge today in a ridge breaking pattern. This will drag a weak cold front across our CWA along with an associated weak lobe of vorticity. Proggs continue to indicate winds turning westerly and mixing out behind the front, while strong low level moist convergence occurs over eastern Montana. This is the area where we could see a strong or severe thunderstorm develop. Updraft helicity and some limited effective shear may support sustained updrafts within supercells. GFS model data showing signs of some strong convective feedback in the Carter County vicinity between 5-6 pm this afternoon, which is where several CAMS are indicating some strong helicity tracks. So, although forcing is not very impressive, there are some ingredients in place today for severe thunderstorm development in the east. We have added a mention of heavy rain (PWATS around an inch) and large hail to the southeast corner late today and this evening.

We should also mention that strong winds may develop over the foothills today behind the front, especially in the Livingston and Big Timber areas. Gusts to 40 mph are possible this afternoon and may hinder outdoor activities and high profile vehicles on I-90.

Look for the winds and storms to die down late this evening as the supportive energy races east into the Dakotas. BT

Monday through Sunday .

Much of Monday will be dry across the area before a shortwave ejects into the Northern Rockies bringing increasing chances for showers and thunderstorms over northwest zones during the evening. As the wave slides east across Montana, a few showers or thunderstorms could develop over eastern areas Monday night. Another weak wave will bring additional shower and thunderstorm chances to southern areas Tuesday into Tuesday night, greatest over the mountains.

Unsettled weather looks to prevail through the rest of the week as multiple disturbances moving through zonal flow bring periodic chances for showers and thunderstorms. A cutoff upper low west of California is progged to gradually move inland by the weekend with stronger troughing developing over the Pac NW. This will lead to height falls over the region and increasing precipitation chances over the area into next week.

Highs are forecast to range from the upper 70s to 80s Monday through Sunday, with cooler temperatures possible by early next week. Low temperatures most nights/mornings will range from the 40s to 50s. STP

AVIATION.

Mainly VFR conditions will prevail today through tonight. However, isolated to scattered thunderstorms this afternoon will produce localized MVFR or lower conditions, mainly over areas east of KBIL where heavy rain, large hail and strong damaging winds are possible. This includes KMLS, KBHK, K4BQ and KSHR generally from 20z to 04Z. Expect LLWS today in KMLS. There will be localized mountain obscurations over the NE Bighorns this afternoon. Arthur

PRELIMINARY POINT TEMP/POPS.

Tdy Mon Tue Wed Thu Fri Sat ------------------------------------------------------- BIL 090 056/081 056/078 055/085 056/080 055/084 060/083 1/B 00/U 21/B 10/B 12/T 23/T 44/T LVM 082 050/079 052/077 050/081 053/078 051/080 054/077 0/N 02/W 43/W 11/B 25/T 45/T 66/T HDN 093 055/083 054/079 053/086 056/082 055/087 060/084 2/T 00/U 21/B 11/B 12/T 33/T 44/T MLS 093 056/081 057/078 053/085 057/082 055/085 061/084 3/T 20/U 20/B 10/B 11/B 33/T 44/T 4BQ 094 056/083 054/078 053/084 054/083 055/086 059/084 3/T 30/U 20/U 12/T 11/B 23/T 44/T BHK 087 055/081 054/077 049/082 053/080 053/082 058/081 2/T 30/U 21/B 11/U 11/B 32/T 54/T SHR 091 054/086 054/076 052/083 053/082 053/085 058/083 2/T 10/U 12/W 11/U 12/T 23/T 44/T

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
West Yellowstone, MT32 mi43 minSSW 21 G 2910.00 miA Few Clouds and Breezy63°F39°F42%1017.6 hPa

Link to 5 minute data for KWYS

Wind History from WYS (wind in knots)
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Last 24hrE4SW12
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1 day ago6CalmSW46W7
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2 days agoN5SW11
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SW6SW6S4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Billings, MT (13,3,4,5)
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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 numerous 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.