Colorado and Utah Smoke Dispersal and Ventilation Rates

Possible Record Breaking Warmth in the Western U.S.; Elevated to Critical Fire Weather in the Eastern U.S.

Anomalously warm temperatures over the western U.S. today and Wednesday may break or tie current high and warm low records. In the East, dry conditions and gusty winds are bringing elevated fire weather to parts of the Eastern U.S. with critical fire weather in the southern Appalachians. 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)