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 7:56AM||Sunset 4:42PM||Monday December 16, 2019 12:21 AM MST (07:21 UTC)||Moonrise 9:42PM||Moonset 11:37AM||Illumination 79%|
7 Day Forecast for Marine Location Near Silver Gate, MTHourly EDIT Help
Area Discussion for - Billings, MT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KBYZ 160228 AFDBYZ
Area Forecast Discussion . Updated National Weather Service Billings MT 728 PM MST Sun Dec 15 2019
UPDATE. Weak shortwave in cyclonic flow was developing a few snow showers across the forecast area earlier this evening. Models did not pick up on this activity at all, even the high resolution runs. Brushed in some low pops for the rest of the evening and timed them out of the area overnight. TWH
Today through Tuesday Night .
Cyclonically curved northwest flow aloft over the region today will trend towards anticyclonic northerly flow through Monday which persists into Tuesday as an upper level ridge migrates eastward through the western US. Expect terrain assisted convection this afternoon to dissipate with the exception of western areas this evening where a disturbance clipping extreme southeast Montana will maintain some midlevel instability through the evening hours. Water vapor imagery shows drier low level air moving into the area as shown by dewpoints at KLVM approaching the single digits. This air will make its way from west to east overnight but in southeast Montana its arrival is later so still could see some stratus formation.
Monday looks dry across the area and at the surface pressure gradients increase along the foothills but leeside troughing is not strongly established. This begins to pick up the winds in western areas but may not bring as much winds to central zones. Because pressure gradients are oriented from NNW to SSE to not expect significant gap flow winds and winds will likely be just as strong in Harlowton area as Big Timber and Livingston given a bit of support from stronger 700mb winds oriented northwesterly. This changes Monday night as IDA-LWT gradients projected to tighten to 20mb which is maintained into Tuesday night. Expect gap flow winds to become strong sometime Monday night but right entrance region of the jet over the area in the evening my delay its intensification until midnight. However from Monday night through Tuesday and persisting off an on through the week gap flow winds will be a persistent story.
Otherwise dry weather expected the next two days with the winds causing better mixing and warming temperatures. borsum
Wednesday through Sunday .
Extended forecast continues to trend dry, warmer, and windy. Any precipitation chances will remain over southwest mountain locations, and those chances will be low. Western foothills will likely have wind gusts in the 50 to 60 mph range Wednesday morning and Thursday night into Saturday. Temperatures will approach 50 degrees in some areas Friday, Saturday and Sunday. Far extended continues to trend cooler, but no signs of Arctic air coming to Montana yet. Chambers/RMS
VFR will prevail tonight through Monday evening. Some fog is possible in the KMLS area late tonight. Localized to areas of mountain obscuration will decrease overnight. Expect gusty WSW winds in KLVM after 06Z tonight with gusts of 30-35 kt. The winds will become stronger Monday evening. LLWS will occur in KBIL tonight. Arthur
PRELIMINARY POINT TEMP/POPS.
Mon Tue Wed Thu Fri Sat Sun ----------------------------------------------------------- BIL 019/036 021/041 026/045 026/045 029/049 033/052 032/050 20/U 00/N 00/N 00/B 00/B 00/B 11/B LVM 018/031 017/036 022/042 023/039 028/045 033/048 033/046 20/N 00/N 00/N 00/N 11/N 11/N 12/S HDN 014/034 015/040 019/043 020/044 022/048 027/051 026/049 20/U 00/U 00/U 00/B 00/B 00/B 11/B MLS 013/030 017/037 022/040 020/039 023/044 027/046 027/043 20/U 00/B 00/U 00/B 00/B 00/B 00/B 4BQ 012/031 014/037 018/042 018/041 021/044 025/048 026/046 20/U 00/U 00/U 00/B 00/B 00/B 00/B BHK 010/027 014/033 019/038 017/037 020/042 025/044 025/041 20/U 00/B 00/U 00/B 00/B 00/B 00/B SHR 010/032 010/040 017/045 019/043 020/047 025/051 028/049 20/U 00/B 00/U 00/B 00/B 00/B 01/B
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.
|Yellowstone Lake, WY||41 mi||86 min||N 0||mi||-5°F||-8°F||87%||1024 hPa|
Link to 5 minute data for KP60
Wind History from P60 (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||Calm||NW||Calm||NW||NW||Calm||Calm||W||Calm||Calm||Calm||Calm||NW||Calm||Calm|
|2 days ago||W|
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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 (2,6,7,8)(on/off)  Help
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