The temperatures will be in the upper 80s to low 90s over the high desert this weekend and that, coupled with the dry air, is a recipe for rapid fire growth.
The existing fire scenario is still problematic as the Lookout and Bedrock fires are still burning vast areas along their respective perimeters. The Petes Lake fire has expanded to over 400 acres and may experience some growth this weekend. Although the AQI (air quality index) has been in the good range most of the week, that may change.
A Fire Weather Watch will go into effect through Central Oregon on Saturday morning and last through the evening as the dry air and heat are a concern. Rapid fire growth is possible. Counties included in the watch are Deschutes, Crook, and Jefferson along with others in the region.
The heat and dry pattern will persist into Sunday before a weak cold front arrives to cool us down as we move into the new work week. Unfortunately, ahead of the front will be the chance for some gusty winds. The winds will be more robust north of our viewing area, but there will be some noticeable winds in the region that may fan the flames of some of our existing fires.
Temps will be significantly cooler by the middle of next week, topping out in the middle to upper 60s. Spotty rain may also arrive by the end of the work week.
Of note, this is the last official weekend of the Astronomical Summer as the Autumnal Equinox will occur on the 22nd of September just before midnight local time.
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