Marine Weather and Tides
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 5:32AM||Sunset 9:16PM||Sunday June 13, 2021 7:52 AM MDT (13:52 UTC)||Moonrise 7:09AM||Moonset 11:14PM||Illumination 13%|
7 Day Forecast for Marine Location Near Bozeman, MTHourly EDIT Help
Area Discussion for - Billings, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBYZ 130818 AFDBYZ
Area Forecast Discussion National Weather Service Billings MT 218 AM MDT Sun Jun 13 2021
DISCUSSION. Today through Monday .
The big story remains HEAT as a strong ridge builds ahead of a deep trof off the Pacific coast, allowing for a very warm air mass to surge out of the desert southwest. Temps today will be slightly warmer than Saturday with highs mostly in the upper 80s to lower 90s (easterly surface winds will hold back mixing behind last night's cold front). We'll see temps push 100F everywhere except our far east on Monday as 700mb temps surge to near +17C. Surface winds will again be easterly and this will limit mixing even if slightly. We should see daily records tied or broken tomorrow. If Billings and/or Sheridan reach 100F it will be the first time in 2021.
A weak shortwave lifting thru NV/ID will produce a few t-storms in western MT late today . well to our west but we should see some high based cumulus over our western mountains. On Monday, weak energy rotates over the ridge and several models produce isolated t-storms either over and east of the Bighorns and/or in southeast MT. Boundary layer moisture will have increased w/ the easterly flow, but given the very warm mid levels (i.e. expected capping) and weak forcing this seems overdone. Feel the better chances of convection is over the Black Hills to our southeast. Nonetheless this is something to watch.
Stay safe from the heat folks!
Monday night through Sunday .
Dry conditions are expected to prevail through the extended forecast period. Monday night there is a wave that is progged across extreme eastern Montana, but very dry conditions are in place, and we appear strongly capped in the area. Have continued to keep forecast dry at this time.
Afternoon high temps Tuesday are expected to be well above normal, with most locations right around 100 degrees or warmer. A cool front is progged across southern Canada Tuesday night and Wednesday, flattening flow across the CWA. This should result in highs about 15 degrees cooler for Wednesday.
This is followed by upper level flow becoming more northwesterly, resulting in temps trending cooler yet, for Thursday and Friday. Some models even get temps to near normal. NBM numbers also seem to be trending cooler for these days. Shallow upper ridging previously progged into the area Saturday seems to be developing more slowly and stalling a bit over western Montana, so Saturday looks a little cooler as well. Chose to cool forecast temps for Thursday through Saturday by a few degrees, from those provided by NBM. Kept forecast highs within collaboration, but still several degrees warmer the guidance. Shallow ridge shifts more eastward Saturday night, but appears to be flattened by another shortwave crossing the region, so flow looks mainly flat across the region for Sunday.
A few weak shortwaves are progged to cross the region through the period. Each indicate some possible isolated shower activity, but dry atmospheric conditions in place give me pause in overriding ensemble guidance at this time. We will continue to monitor these waves, and adjust the forecast if needed. Gilstad
VFR will dominate the region under building high pressure aloft. Southeasterly low level jet will produce modest LLWS at KMLS & KBHK tonight. JKL
PRELIMINARY POINT TEMP/POPS.
Tdy Mon Tue Wed Thu Fri Sat ------------------------------------------------------- BIL 091 061/100 063/105 063/087 057/081 051/081 054/088 0/U 00/U 00/G 00/U 00/U 00/U 01/U LVM 087 051/097 057/100 055/087 050/081 047/080 049/087 0/U 00/U 00/N 00/U 00/U 00/U 01/U HDN 093 058/102 063/107 062/089 055/082 050/083 053/090 0/U 00/G 00/G 00/U 00/U 00/U 00/U MLS 091 062/098 068/106 067/086 056/081 051/080 054/086 0/U 00/U 10/G 00/U 00/U 00/U 00/U 4BQ 091 061/098 067/106 067/087 058/082 052/081 055/085 0/U 01/U 10/G 00/U 00/U 00/U 11/U BHK 087 057/091 064/098 065/086 054/080 048/078 049/082 0/U 00/N 10/N 10/N 00/U 00/U 11/U SHR 090 055/100 061/104 062/089 055/082 049/081 051/088 0/U 00/U 00/G 00/U 00/U 00/U 01/U
BYZ WATCHES/WARNINGS/ADVISORIES. MT . None. WY . 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||10 mi||56 min||N 0||10.00 mi||Fair||50°F||43°F||77%||1018.6 hPa|
Link to 5 minute data for KBZN
Wind History from BZN (wind in knots)
|1 day ago||SE||NE||Calm||N||E||N||SW||SW|
|2 days ago||W||Calm||NW||W|
EDIT Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map(on/off)  Help Weather Map
GEOS Local Image of EDIT
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.
Link to Loop
Other links: GEOS-West Contential US Full GOES-East
Please read website Cookie, Privacy, and Disclamers by clicking HERE.