Friday, January28, 2022
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Marine Weather and Tides
Big Sky, MT

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:48AMSunset 5:26PM Friday January 28, 2022 3:23 PM MST (22:23 UTC) Moonrise 4:46AMMoonset 1:24PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 Big Sky, MT
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location: 45.26, -111.31     debug


Area Discussion for - Great Falls, MT
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FXUS65 KTFX 282121 AFDTFX

Area Forecast Discussion National Weather Service Great Falls MT 221 PM MST Fri Jan 28 2022

SYNOPSIS.

Fair, mild and windy conditions prevail through Sunday across North-central Montana. Southwest valleys will remain cooler with temperature inversions. Temperatures turn colder next week, with periods of light snow through the middle of the week.

DISCUSSION.

An upper level high is centered over the interior western US this afternoon with ridge extending north into BC and mainly high level moisture spilling over the ridge with a Chinook arch covering much of north-central MT. Temperatures warmed to the mid and upper 40s across much of north-central MT, thanks to gusty southwest winds with strongest winds along the Rocky Mtn Front. Still some potential for gusts near 60 mph through the rest of this afternoon as far east as Cut Bank, but expect an overall decrease in wind this evening and overnight as the pressure gradient across the Rockies relaxes some. Enough wind will continue tonight across the plains to keep temperatures mild while SW MT valleys cool quickly again with lesser clouds and wind as well as persistent valley temperature inversions. This general pattern continues through Sunday as the upper ridge gradually weakens with unseasonably mild temperatures, especially across north-central MT, and breezy to windy conditions across the plains.

Windy conditions will become more widespread Sunday as the upper ridge begins to collapse ahead of a trough moving in from the NW and surface low pressure deepens to the north in Alberta. Stronger flow aloft moves into the area Sunday night while surface low pressure moves east of Alberta setting up potential strong winds across western and NW portions of north-central MT. Snow begins to move into areas near Glacier Park as early as late Sunday afternoon as Pacific moisture streams into the Northern Rockies ahead of the trough. Models are in agreement on Monday being the transition day for most of the area as the upper trough settles into the region with a cold airmass from NW Canada sliding down the Rockies into N-central MT by Monday afternoon. There is still some uncertainty with timing of the frontal passage and cold airmass arrival and its eventual progression into SW MT Monday night or Tuesday. It is likely that northern portions of the forecast area see max temperatures Monday morning with temperatures falling through the 20s by the afternoon.

Periods of mainly light snow are likely with and following the frontal passage Monday and Monday night and at times with additional disturbances moving through the area through at least Tuesday night. Ensemble model guidance shows a high likelihood for total snowfall amounts of 2 inches or more for the period from Monday afternoon through Tuesday night across north-central MT with higher amounts likely in the mountains and lower amounts likely across SW MT. Latest blended model guidance has daytime temperatures in the teens with overnight low temperatures in the single digits below zero Tuesday and Wednesday, but temperatures could be colder than this, especially across north-central MT, depending on the depth of the cold airmass moving south into the area with snow-cover also likely to affect temperatures by then. Hoenisch

AVIATION. 1040 AM MST Fri Jan 28 2022 (28/18Z TAF period)

VFR conditions prevail under a west to northwest flow aloft with widespread high clouds across northern areas and scattered high clouds further south. Gusty southwest surface winds continue through this afternoon on the plains, then decrease some overnight. Mountain wave turbulence is possible through the period.

Refer to weather.gov/zlc for more detailed regional aviation weather and hazard information.

PRELIMINARY POINT TEMPS/POPS. GTF 31 50 30 50 / 0 0 0 0 CTB 30 46 30 46 / 0 0 0 0 HLN 16 39 21 42 / 0 0 0 0 BZN 4 35 10 39 / 0 0 0 0 WYS -9 30 -6 30 / 0 0 0 0 DLN 8 31 13 38 / 0 0 0 0 HVR 25 45 27 49 / 0 0 0 0 LWT 24 45 26 47 / 0 0 0 0

TFX WATCHES/WARNINGS/ADVISORIES. High Wind Warning until 5 PM MST this afternoon Eastern Glacier . Northern Rocky Mountain Front . Southern Rocky Mountain Front.



http://www.weather.gov/greatfalls


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bozeman, Gallatin Field, MT38 mi28 minN 010.00 miFair23°F10°F57%1036.4 hPa

Link to 5 minute data for KBZN

Wind History from BZN (wind in knots)
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Last 24 hr000SE4S3S6SE70S4SE50SE453S50S5000SE4E3NE40
1 day agoNE300SW4S4S7S40SW75S5SW30SE3S3SE3NW30SE3000E4NE5
2 days agoE3E4SE5SE6SE70S30S3SE30W3SE4S6S50E40S3S3N5NW3SE4SE3

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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