Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 7:52AM||Sunset 4:41PM||Tuesday December 10, 2019 4:26 AM MST (11:26 UTC)||Moonrise 4:00PM||Moonset 6:04AM||Illumination 98%|
7 Day Forecast for Marine Location Near Big Sky, MTHourly EDIT Help
Area Discussion for - Great Falls, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KTFX 100307 AFDTFX
Area Forecast Discussion National Weather Service Great Falls MT Issued by National Weather Service Glasgow MT 807 PM MST Mon Dec 9 2019
Evening update . Main change was to trim back on the precip (snow) in the east, based on radar trends and obs.
Otherwise, minor updates to winds and cloud cover.
Slightly warmer, yet still below normal, temperatures will be found today. Some snow showers are also possible today for northern and central portions, especially from Havre to Lewistown areas, with dry conditions expected elsewhere. Precipitation looks to diminish late tonight, with mainly dry and continued warming conditions expected for Tuesday.
AVIATION. Updated 449 PM MST Mon Dec 9 2019 (10/00Z TAFs)
Some light snow continues to fall along and near a KLWT to KHVR line, which may cause MVFR/IFR/LIFR conditions through 6Z. Low clouds and fog are moving back into KWYS this evening and will likely persist through much of this TAF period. Mostly VFR conditions prevail elsewhere as mid-level clouds pass through the region.
PREV DISCUSSION. /ISSUED 450 PM MST Mon Dec 9 2019/ Tonight through Wednesday Night . Scattered snow shower activity over northcentral Montana continues this afternoon under breezy northwesterly flow, as a series of weak disturbances traverse the region through tonight. Given the convective nature of these snow showers, moderate to heavy snowfall could be possible under some of the snow bands that develop throughout the evening. Higher pressure will begin to build into the area Tuesday, bringing drier and slightly warmer conditions to the region through mid week. Models are showing another disturbance tracking into the region Wednesday, with limited moisture and not as strong as the disturbance currently tracking through the area. As a result only scattered snow showers are expected at this time with the best chances coming across the mountains. Breezy winds ahead of this system could continue to warm temperatures for Wednesday, and perhaps bring some areas of blowing snow. -TP
Thursday through Monday . Much of the long term could then see periods of unsettled weather, although will lack any large scale organized storm systems. Thursday sees strengthening and moist westerly flow across the area. The result will be one more day of warming temperatures, with chances for snow mainly along and west of the divide. Breezy conditions will also be found on Thursday, perhaps bringing some blowing of fresh snowfall. Friday through the weekend then sees a cooling pattern as northwest flow opens the door for weak disturbances to move through the region at times. As mentioned before models only indicating scattered snow shower activity at this point with no real large scale organized system expected across the area, and placing the better chances in the mountains. This northwest flow pattern may continue into early next week, although does not appear to be as unsettled. -Anglin
PRELIMINARY POINT TEMPS/POPS. GTF 18 35 23 39 / 0 0 0 10 CTB 13 31 17 32 / 0 0 0 10 HLN 16 37 21 40 / 0 0 0 10 BZN 11 35 14 37 / 0 0 0 10 WEY 8 26 14 28 / 10 10 0 20 DLN 12 32 17 35 / 0 0 0 10 HVR 12 26 12 27 / 50 0 10 20 LWT 16 35 18 38 / 60 0 0 10
TFX WATCHES/WARNINGS/ADVISORIES. None.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Bozeman, Gallatin Field, MT||38 mi||90 min||N 0||10.00 mi||Overcast||25°F||19°F||78%||1024 hPa|
Link to 5 minute data for KBZN
Wind History from BZN (wind in knots)
|1 day ago||NE||Calm||Calm||Calm||Calm||Calm||NW||N||W||NW||NW||SW||W||W||W||W||Calm||W||Calm||NW||Calm||Calm||NE||W|
|2 days ago||SE||SE||NW||SE||S||Calm||Calm||SW||N||SE||S||SW||Calm||E||E||Calm||Calm||NE||NE||Calm||E||SE |
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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 Great Falls, MT (6,6,7,8)(on/off)  Help
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