The last 24 hours
The house remains inside the Level 1 "Get Ready" zone, unchanged since the Aug 15 redraw. Level 2 "Get Set" holds at 2.0 mi NNE and Level 3 "Go Now" at 3.7 mi NNE, both untouched since Aug 16. The Entiat-side zones (Level 2 at 9.3 mi E, Level 3 at 8.4 mi ENE) carry no new edit either — all 11 zones flat, zero edits in the last 24h.
The GIS perimeter held at 139,487 acres, 12% contained (still dated Aug 20, 7:29 PM PDT — no fresh capture this cycle). InciWeb's Aug 21, 1:56 PM update now matches that figure exactly. Afternoon fire behavior was described as surface fire, backing, flanking, and uphill runs converging near Twin Lakes and Cougar Mountain — calmer than the "extreme, crowning, long-range spotting" reported overnight, and on the same branches away from the Plain-facing side. One new detail: the incident's Plain Base Camp took on 110 National Guard personnel as of Aug 20, part of a roster that's now 1,818 including recently arrived U.S. Army and Australia/New Zealand contingents. Level 3 remains in effect for the north shore of Lake Chelan (Deer Point to Safety Harbor Campground) — outside the 15 mi range that matters for Plain. Nearest perimeter edge to the house held exactly flat at 6.6 mi N.
VIIRS: nearest detection 6.5 mi NNE within the last 24h. The two single-day clusters flagged UNVERIFIED this morning — 9.5 mi NNE and 9.8 mi NNE — still show only Aug 21 detections; no second day yet, still unconfirmed, still well outside 15 mi. Nothing new appeared near Plain this cycle.
Lake Chelan Now's latest post still just repeats the community meeting notice (Tuesday, 6:30 PM, Lake Wenatchee Recreation Club). The Chelan County evacuation-zone page is still on its Aug 17, 3:30 PM post — now four days stale. lakewenatcheeinfo.com did not return usable content this cycle. A general search surfaced nothing dated today beyond InciWeb.
Fire weather
The weekend threat got sharper: NWS Spokane upgraded the Fire Weather Watch to a Red Flag Warning, same window — Saturday 11 AM through Sunday 8 AM — now naming a cold front bringing thunderstorms, strong west-to-southwest winds, and gusty outflow winds up to 40 mph, with lightning risk for new starts. The Saturday forecast wind itself is unchanged at NW 3–14 mph, gusts to 23 mph, which still pushes the fire east, away from Plain — but outflow gusts under a thunderstorm can be locally erratic, which is exactly what a Red Flag Warning is for. Today and tonight stay light and mixed (S ~2 mph, shifting to N ~3 mph), not a factor. A Heat Advisory ran through 10 PM tonight.
Air quality
AQI 68 (up from 59 this morning) but PM2.5 down to 10.5 µg/m3 from this morning's smoke-settled spike of 35.2 — the usual overnight-to- afternoon pattern reversing. NWS renewed the Air Quality Alert for Chelan, Douglas, and Okanogan counties, now open-ended ("until further notice") rather than a fixed cutoff.
Roads: no blocks logged.