InciWeb
Wildfire
Prescribed Fire
Burned Area
Response
OtherThe Tyee Ridge Complex is 10 Miles West of Sutherlin in NW Douglas County, Oregon; it involves 10 wildfires. The management of this incident is the Oregon Department of Forestry Team 1.
| Current as of | Mon, 09/18/2023 - 11:56 |
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| Incident Type | Wildfire |
| Cause | Lightning |
| Date of Origin | |
| Location | 10 Miles West of Sutherlin |
| Incident Commander | Oregon Department of Forestry IMT 3, Incident Commander: Chris Cline/Eric Perkins (t) |
| Incident Description | Complex: Multiple Fires |
| Coordinates |
43° 22' 21'' Latitude
-123° 35' 13
'' Longitude
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| Total Personnel: | 493 |
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| Size | 7,945 Acres |
| Percent of Perimeter Contained | 90% |
| Estimated Containment Date | 09/30/2023 |
| Fuels Involved | Timber (Litter and Understory) Medium Logging Slash Closed Timber Litter Narrative: There is a heavy dead and downed component in the fire area from past winter storm damage. There are also commercial timber stands, reprod and harvested units in the fire area. |
| Significant Events | Minimal Backing Creeping Smoldering Narrative: Warm temperatures, clear skies, moderate humidity and NW winds allowed for continued fire activity in unchecked areas, fuel concentrations, and stumps. There are areas of smoldering and creeping. Stump holes and down large wood continued to produce smoke and limited flames. Burning snags continue to come down in the interior portions of the fire. Some small interior areas of unburned fuels continue to consume. |
| Planned Actions |
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| Projected Incident Activity |
12hr. High pressure has continued to weaken and shift east today. Temperatures have cooled substantially to near 80 with minimum RH around 30%. Diurnal northwest winds have remained below 10 mph especially across most of the fire where it is terrain sheltered. Generally weak winds will allow for a moderate thermal belt to persist each night early this week. This will bring only moderate ridgetop recoveries around 60% with substantially warmer low temperatures on ridges compared to valleys. A moist cold front crossing the area will bring progressively colder temperatures through Wednesday, though RH will stay similarly low, near 30% thanks to dry air advection. Northwest winds will be slightly enhanced along the front gusting up to 16 mph. There is a threat of gusty north-northeast wind mid to late week. #36. Projected Incident Activity, Potential, Movement, Escalation, or Spread (and influencing factors during the next operational period and in 12-, 24-, 48-, and 72-hour time frames): 12hr. Overnight there is a high likelihood for a thermal belt to develop allowing for some minor interior burning of jackpots/concentrations, stumps and snags. Portions of the fire area not affected by thermal belt will see moderate night RH recovery which will allow for reduced activity. The heavier fuels and burning stump holes will continue to produce smoke until consumed or extinguished. The morning will have scattered clouds. 24hr. As a weak cold front crosses the area, it will bring cooler conditions with temperatures in the 70's along with morning clouds. This system will keep the RH's above 30%. Winds will continue from the NNW with increased gusts up to 15mph on ridges resulting in increased potential for fire activity on areas with exposed hot spots and available fuels or snags/trees coming down into receptive fuels. Otherwise, minimal fire activity with smoldering and creeping will occur were unchecked and well interior. The thermal belt will persist resulting in lower RH allowing for burning of concentrations or stump holes through the night. minimal activity expected. 48hr. Tuesday looks to be very similar as the cold front continues through the area keeping things moist and fire activity low. The front will bring cooler temps in the 70's, RH in the 30's and light North winds with typical gusts up to 15mph. Fuels will remain receptive to ignition and spread but at a reduced rate. Hot spots exposed to the gusty winds and available fuels could experience some active fire. The thermal belt is highly likely for the higher elevations in the fire area. 72hr. Today’s weather will transition with patchy morning fog increasing RH for reduced fire activity. Afternoon clouds will help keep temps cooler and RH's in the mid to upper 30% range and North winds with gusts below 20mph. Fire activity should be minimal except for those areas exposed to the stronger gusty winds which could create some dynamic fire activity interior. expect a thermal belt to develop overnight. Anticipated after 72 hours. A potential East wind episode is developing with temperatures warming and RH's in the 20% range over Thursday and Friday. Thursday will experience East winds that will align with the canyons and ridges on these fires. Both conditions will allow for increased fanning of any smoldering/flaming material resulting in potential increased fire activity. Thursday afternoon the fire could see winds gusting up to 20mph. Friday will see warm temps and lower RH's but winds will be shifting to West-NW with gusts up to 15mph. This shift will continue to encourage smoldering or creeping areas to increase activity due to the lower RH and winds from a different direction. Long term, potential rain is being included in the forecast Sept 24 through Sept 26. There is a 65% chance of widespread wetting rain and 35% chance of more than 1inch of rain in the fire area. These amounts should penetrate the canopy and minimize activity in jackpots of fuel, large logs and stumps. This amount will not completely extinguish these fires but will reduce fire activity. |
| Remarks |
The Rattlesnake Ridge fire merged with Cougar Creek #1. Lighthouse #2 and Lighthouse #4 merged with Lighthouse #3. These have been marked as 100% contained, actual containment is reflected in Cougar #1 and Lighthouse #3 Total Costs - $40,594,626 |
| Weather Concerns | High pressure has continued to weaken and shift east today. Temperatures have cooled substantially to near 80 with minimum RH around 30%. Diurnal northwest winds have remained below 10 mph especially across most of the fire where it is terrain sheltered. Generally weak winds will allow for a moderate thermal belt to persist each night early this week. This will bring only moderate ridgetop recoveries around 60% with substantially warmer low temperatures on ridges compared to valleys. A moist cold front crossing the area will bring progressively colder temperatures through Wednesday, though RH will stay similarly low, near 30% thanks to dry air advection. Northwest winds will be slightly enhanced along the front gusting up to 16 mph. There is a threat of gusty north-northeast wind mid to late week. |
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