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Frog Fire

Unit Information

Ochoco National Forest
U.S. Forest Service
3160 NE Third Street
Prineville, OR 97754

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This incident is no longer being updated.

Basic Information

Current as of
Incident TypeWildfire
CauseLightning
Date of OriginSunday August 16th, 2020 approx. 02:30 PM
Location8 miles south of Post
Incident CommanderAdam Barnes
Coordinates44.039 latitude, -120.528 longitude

Current Situation

Total Personnel371
Size4,020 Acres
Percent of Perimeter Contained100%
Fuels Involved

Timber (grass and understory), brush (2 feet), and light logging slash

Significant Events

Minimal creeping, smoldering

Outlook

Planned Actions

Secure and hold existing lines,continue mop-up and suppression repair.

Projected Incident Activity

Temperatures remain seasonable, however relative humidity values continue an incremental (1-2 percent per day) decline. Consecutive evenings of poor humidity recovery combined with single digit daytime humidity values have the potential to produce moderate fire behavior in unburned islands where continuous fuel exists. Expected fire behavior will consist primarily of creeping and smoldering. Expect continued consumption of large diameter fuels where unchecked.

Current Weather

Weather Concerns

A ridge of high pressure delivered more clear skies and dry conditions to the fire today. The relative humidity values only climbed to 34% overnight and fell as low as 13% during the day. The relative humidity has now been below 40% since early Wednesday morning. Warming conditions were also observed with afternoon highs peaking in the lower to middle 80's. The dry and warm conditions were tempered by relatively light terrain driven winds. The peak wind gust observed on the fire were 10 mph or less.

The period of sub-40% relative humidity values will continue tonight and into Saturday, but the main highlight will revolve around a strong and dry cold front. The front is scheduled to arrive late Saturday afternoon and will bring a period of windy conditions persisting through the evening. Wind gusts of 20 to 25 mph are expected over exposed ridges with slightly weaker values over lower portions of the fire. High temperatures will be in the lower afternoon into the evening due to the combination of strong winds coupled with lower relative humidity values.