National Weather Service United States Department of Commerce

Tropical Storm Ian Expected to Strengthen Before Entering the Gulf

Tropical Storm Ian is expected to continue to strengthen over the central Caribbean today before turning towards the north later in the weekend. Ian is expected to strengthen into a hurricane before it enters the Gulf of Mexico early this upcoming week, then approach the Florida peninsula at or near major hurricane strength, with potential for significant impacts. Read More >

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.


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


Ventilation Rate = Transport Wind (kts) Mixing Height (ft)