Marine Weather and Tide Forecast for Big Timber, MT

DISCUSSION

Through next Thursday...

A warm and dry pattern will persist through Monday. Temperatures will be 15-20 degrees above average with high temperatures generally in the 50s F.

Winds are expected to increase along the western foothills starting Saturday. This will be caused by an increasing foothills pressure gradient and 700 mb winds. Models are indicating that the foothills pressure gradient will be in the 5-10 mb range and 700 mb winds in the 30-35 kt range. The strongest winds will be for gap areas such as Livingston and Nye as these variables combine to bring daily 30-50% chances for a wind gust over 50 mph. The US-191 corridor has a less than 20% chance for a wind gust over 50 mph.

There are continued indications that starting next Tuesday, there will be a pattern change to cooler and wetter conditions across the region. There is good ensemble agreement in upper level troughing being dominant over the western US. What is not yet clear is the exact impact that this change in upper level pattern will have. What is clear is that we will likely be entering a period of more active weather. What is unclear at this point is the timing, location, and precipitation types that can be expected. Even though temperatures are expected to be cooler than what we have seen recently, we are not expecting unusual cold.
High temperatures for the mid to late week period are expected to be in the 30s for most locations. Torgerson


AVIATION

18z Discussion...

Breezy winds out of the west (gusts to 25kts) are expected to continue at KLVM through the period. KBIL will see WSW winds around 10kts prevail. All sites will remain VFR. WMR

PRELIMINARY POINT TEMP/POPS

Fri Sat Sun Mon Tue Wed Thu ----------------------------------------------------------- BIL 028/054 029/055 034/057 031/058 032/049 027/043 021/039 00/U 00/B 01/B 11/B 15/W 33/J 22/J LVM 027/049 029/051 035/053 033/052 032/046 025/040 022/038 00/U 00/N 11/E 11/B 36/W 43/J 33/J HDN 024/055 025/057 029/059 028/061 030/051 024/044 020/041 00/U 00/B 00/B 11/B 15/W 44/J 22/J MLS 024/051 026/053 029/053 029/055 027/045 021/037 016/033 00/U 00/B 00/B 10/B 13/W 42/J 21/B 4BQ 027/054 027/055 029/057 029/059 031/054 024/044 020/041 00/U 00/B 00/B 00/B 03/W 32/J 21/B BHK 023/050 024/050 027/051 027/053 026/046 019/034 013/032 00/U 00/B 00/E 00/B 14/W 53/J 22/J SHR 023/052 023/054 026/057 026/058 027/050 021/043 016/040 00/U 00/B 00/E 00/B 15/W 44/J 32/J

BYZ WATCHES/WARNINGS/ADVISORIES
MT...None.
WY...None.