Colorado and Utah Smoke Dispersal and Ventilation Rates

Rain and Mountain Snow in the Pacific Northwest; Warmer in the Western and Central U.S.

Across the Pacific Northwest, a plume of Pacific moisture will continue to bring moderate to locally heavy rainfall to lower elevations and heavy snow to the northern Cascades into the northern Rockies through Monday. Warm spring-like temperatures will expand over the western and central U.S. this week. Record tying or breaking highs will be possible from Texas west into the Desert Southwest. Read More >

Fire Weather Dashboard

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

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)