Current Button Rock weather: 50 degrees, humidity 26 percent, wind from the northwest at 8 mph. Ridgetop winds northwest at 15-30 mph. 

Wind conditions expected to improve a little over the next couple of hours. Winds continue to be from a northwesterly direction and may begin to mix down into the valley. Still potential for gusts to 50 mph on the ridges.

Information on the cause of the fire is available on the City of Longmont's website.