Posted: Aug 15, 2013 2:41 PM by Meteorologist Mike Heard
Updated: Aug 15, 2013 2:41 PM
Critical fire weather will develop Friday across most of SW Montana as a mainly dry cold front passes through the state.
The combination of increasing winds, heat and low humidity will greatly increase the chances of a small fire erupting into a large fire. There is a slight chance for afternoon thunderstorms into the weekend which could also lead to new fire starts, however, the weather pattern on Friday will be conducive for human caused fires and we recommend you use extreme caution with outdoor activities.
West winds will be increasing Friday afternoon 10-20 mph with gusts up to or over 30 mph. Relative Humidity values will be extremely low Friday afternoon between 5%-15%. As the front pushes through Friday night look for a wind shift to the NW by Saturday and wind strength to remain in the 10-20 mph range with some gusts to 30 mph.