I've been maintaining a short list, in the comments of another post, of news articles pointing to Arson being the cause of the latest fires in Oregon and California. I was about to add another article to the pile when I figured this list deserves its own post. This list is specifically taken from normie sources, making them more useful in a debate than the raving YouTube videos that are circulating. If more evidence comes out, I plan to update this list.
https://heavy.com/news/2020/09/anita-esquivel/ Archive: https://archive.is/G3mFG
(Strongest evidence of rioter cause so far, with fireworks being a big part of the violent rioter's arsenal. Gasoline is much cheaper and easier to come by.) https://mobile.twitter.com/MultCoSO/status/1304577271429099520?s=19 Archive: https://archive.is/XyaHw
https://www.nytimes.com/2020/09/11/us/wildfires-live-updates.html Archive: https://archive.is/BvmT0
https://www.foxnews.com/us/oregon-wildfire-sweet-creek-fire-arson-arrest-sheriffs-office Archive: https://archive.is/r7mZ6
https://www.kiro7.com/news/local/troopers-man-arrested-setting-fire-along-sr-167-puyallup/2IN46K5QV5GILLJZEJGMIS3L5Q/ Archive: https://archive.is/y0ny9
https://www.kiro7.com/news/local/we-got-another-one-second-man-arrested-intentionally-starting-brush-fire-pierce-county/5CA2YAQTEBBBZBOFKIRDGGKOLY/ Archive: https://archive.is/SCV2v
Update 9/14: https://www.kgw.com/mobile/article/news/crime/man-arrested-for-starting-at-least-7-brush-fires-along-i-205/283-a659a1ed-db3b-4f03-9583-a9fee05a5033 Archive: https://archive.is/j49UC
Update 9/15
The fires around the Eugene area were likely started by telephone poles. Could not find a source definitively saying so, but multiple warnings were issued in the area. Thank you davidverner.
https://www.facebook.com/EWEButility/posts/10157759977500669
https://www.facebook.com/EWEButility/posts/10157760003330669
https://www.facebook.com/EWEButility/posts/10157760041415669
https://www.facebook.com/EWEButility/posts/10157760567325669
https://www.facebook.com/EWEButility/posts/10157760822000669
Update 9/17
https://nypost.com/2020/09/16/oregon-woman-holds-suspected-arsonist-at-gunpoint-as-wildfires-rage/amp/ Archive: https://archive.is/jihym
I am ~70% sure a good chunk of these fires are the work of Antifa/BLM/Anarchists, but there's no definitive proof as of the time of this posting (only supporting evidence). The initial fire outbreak coincides with a relatively quiet night in Portland, and the majority of the communities threatened by these fires are mostly against the riots. Until the cause of all the fires is made clear, we can only speculate and make sure evidence doesn't get memory-holed.
Update: normie sources are now reporting most of the fires were downed powerlines https://www.houstonchronicle.com/news/article/Latest-Crews-Prevent-fire-damage-to-famed-15571969.php
I don't have them off hand because I go through lots of different news sites when keeping track of the fires and digging those articles up is a real hassle because of how many local news and government sites are not search engine optimized. On top of that many of the pages that may have mentioned the ignition source have been updated and may have removed that information to prioritize evacuation information.
This is what I can provide at the moment for the fire east of Eugene about the fire and windstorm.
https://www.kezi.com/content/news/GO-NOW-Residents-near-Blue-River-told-to-evacuate-ahead-of-fire-572345301.html
https://www.facebook.com/EWEButility/posts/10157759977500669
https://www.facebook.com/EWEButility/posts/10157760003330669
https://www.facebook.com/EWEButility/posts/10157760041415669
https://www.facebook.com/EWEButility/posts/10157760567325669
https://www.facebook.com/EWEButility/posts/10157760822000669