Big Sky Weather

09/19/2026

Heavy rainfall with thunderstorms have moved north into southern Garfield and Prairie counties this morning. Unpaved roadways may be impassable. A Flood Advisory is in effect until 1:15 PM this afternoon.

09/19/2026

ALERT...
Heavy rainfall...
•••Areas of flash flooding likely•••

SUMMARY...At least localized pockets of flash flooding will be likely across south-central and southeastern MT over the next 4-6 hours. Embedded hourly rates of 1.0 to 1.5 inches are expected with additional totals of 2 to 3+ inches through 1PM.

09/19/2026

9/19/26
Recent burn scars will be highly susceptible to flash flooding and
debris flows. Those living near recent burn scars should have a
plan of action to seek safety should heavy rainfall develop in
those locations.
Stay aware of the directions of local officials and any Flash Flood Warnings that may be issued.

09/18/2026

[3:45pm 9/17/2026]
A weather system will bring periods of showers and thunderstorms to the area today through this weekend. Make sure to stay up to date with the latest alerts and forecast for important updates.

09/17/2026

09/16/2026

🟩Level 1 risk for EXCESSIVE RAINFALL

09/16/2026

[6:05 am 9/16/26] A weather system set to move in Thursday through the weekend is currently expected to bring beneficial precipitation across the region. A few stronger thunderstorms are possible Friday afternoon and evening.

09/14/2026

9/14 Noon: High Wind Warnings/Advisories are in effect for portions of E MT into the W Dakotas this afternoon into this evening. West to Northwest winds gusting 30 to 50 mph will be widespread today with gusts to around 60 mph in areas where warnings have been issued.

09/14/2026

HIGH WIND WARNING 9/14/26

* WHAT...West to Northwest winds 25 to 40 mph with gusts up to 60 mph
expected.

* COUNTIES...Carter, Custer, and Fallon.

* WHEN...From noon today to 9 PM MDT this evening.

* IMPACTS...Strong winds may result in tree and power line damage.
Power outages are possible. Travel will be difficult, especially
for high profile vehicles on north to south oriented roadways.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around
or damaged by the wind.

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution and consider postponing travel
until winds subside, or take an alternate route.

09/08/2026

Some news far from home, but of historical note: Hawaii has its first ever tornado watch (for the Island of Kauai) through tonight as Hurricane Lowell approaches!