The Derby fire, spanning across land in both Eagle and Garfield counties and located about 13 miles north of Doterso, Colorado, grew to approximately 2,624 acres by Thursday morning, as reported by Inciweb , more than tripling in size in the last 24 hours.

The fire was around 839 acres and 0% contained as of 9:30 a.m., Wednesday.

The fire is still 0% contained and 117 total personnel are on scene including nine engines, one helicopter and five hand crews.

The forest service reported Thursday that fire behavior has been wind driven and that growth slowed Wednesday due to slope and fuel type. However, outflow winds associated with monsoonal moisture may increase fire activity Thursday.

According to fire managers, they worked Wednesday to assess protection needs for over 100 structures

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