A dangerous, record heat wave continues across portions of the West through Tuesday. High rip current risk and dangerous surf continue through the weekend. There are flash flooding concerns through the weekend for portions of the Southeast and Southwest. Read More >
Billings, MT
Weather Forecast Office
Smoke dispersal is categorized by using the Ventilation Rate. Ventilation Rate forecasts for a specific point can be found using the Fire Weather Dashboard. Click a spot on the map and scroll down to find daily and hourly Ventilation Rate values for the next few days.
The link above is configured to display smoke dispersal categories as shown here:
Smoke Dispersal | Vent. Rate, knot-feet (x1000) | |
---|---|---|
Excellent | 150 or greater | |
Very Good | 100 to 149.99 | |
Good | 60 to 99.99 | |
Fair | 40 to 59.99 | |
Poor | less than 40 |
Ventilation Rate = Transport Wind (kts) x Mixing Height (ft)
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Billings, MT
2170 Overland Ave
Billings, MT 59102-6455
(406) 652-0851
Comments? Questions? Please Contact Us.