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In addition to the potential unfolding WUI wildfire disaster in Spokane, WA, numerous other large & fast-moving fires (existing & new) are blowing up under extremely critical fire weather conditions & severe drought conditions from eastern slopes of Cascades eastward into ID/MT.

Serious wildland-urban interface (WUI) fire situation in Spokane, WA amid "extremely critical/Particularly Dangerous Situation" fire weather conditions. Two separate fires, #OldTrailsFire & #FairViewFire, are actively burning near/in neighborhoods; mass evacs ongoing. #WAwx

On Tue, Aug 4 at 6pm PT, I'll be participating in a live virtual Town Hall event, hosted by CA State Senator Mike McGuire, on our rapidly-developing #ElNiño event and implications for California from 2026 into 2027. No RSVP required. See you there!

Super El Nino Town HallJoin Senator McGuire, along with climate scientists, meteorologists, and disaster preparedness experts, for a virtual Super El Niño Town Hall to learn how California is preparing for very strong or “super” El Niño weather patterns and events this fall.www.youtube.com

With numerous large fires already burning, the weekend fire wx outlook is concerning for interior PacNW (Cascades crest eastward). A dry cold frontal passage will bring strong winds/low humidity against severe drought backdrop, leading to "extremely critical" risk. #ORwx #WAwx

Remarkable amount of fire on the ground, and smoke in the air, this evening. In this satellite snapshot, numerous large fires (red thermal detections) and smoke plumes stretch from Great Basin northward into British Columbia; fire weather conditions will worsen this weekend.

If the latest FIRIS perimeter for #WoodsideFire is accurate, this would be one of the stranger fire footprints & trajectories I've seen. Under strong NWly winds parallel to coastline, it appears fire has spotted *over oceanic coves* & into downwind forest...twice!! Whoa.

Notable NorCal fire: 50+ acre #WoodsideFire is burning in heavy timber between Hwy 1 & Pacific Ocean & has forced some evacuations in western Sonoma County. It is wind driven (25 gust 35mph) in moderately dry heavy fuels despite mild temps/moderate humidity. Smoke widely visible.

Join UC Environmental Stewards for their 2026 Statewide Conference (Oct. 9-11) at UC Santa Barbara! Presentations, workshops, & field trips will highlight CA natural history, with focus on climate change & resilience. I'll be one of the plenary speakers! na.eventscloud.com/w...

New post out on Weather West on the upcoming intense, double-peaked heatwave event in the Pacific Southwest. What are the (indirect) links to Hurricane Genevieve? (Substantial.) And also: will California see an uptick in wildfire activity? (Probably yes.)

Building Western ridge will bring double-peaked Southwest U.S. heatwave into August, with elevated humidity persisting in SoCal due to very warm ocean - Weather WestJuly 28, 2026 - Daniel Swain - Continued ocean warming brings increasingly warm and humid conditions to coastal SoCal In recent weeks, the Pacific Ocean along the immediate Pacific Coast has continued to warm. Earlier this year, I mentioned that this was not yet due to El Niño because...well, El Niño had not developed yet (and was, instead, related to other patterns #weatherwest.com

Live at Noon Pacific Time on Wed, Jul 29: I'll discuss the upcoming prolonged, and potentially intense, SW US heatwave (inc. links to Pacific hurricane), & also recent surge in severe wildfire activity across Northern Hemisphere amid ongoing record heat.

Upcoming intense SW US heatwave & ongoing Northern Hemisphere wildfire activity amid record heat - YouTubeThe latest in a recurring series of live, virtual, & interactive #weather and #climate-focused "office hours" hosted by Dr. Daniel Swain. 07/29/2026 topic: I...www.youtube.com

One factor behind the potentially record-breaking ridge event across the SW US in early August? Upstream latent heat release and possibly residual anticyclonic "spin" from Hurricane Genevieve, whose dissipation will coincide with an extreme ridge-building event. #CAwx #AZwx

An intense and long-duration heatwave now appears likely by late Jul/early Aug for SW U.S., including California. Extreme heat is likely in hottest inland deserts, and a potentially dangerous combination of heat & elevated humidity may develop in SoCal. More to come. #CAwx #AZwx

In recent weeks, there has been a remarkable surge in large, intense, fast-moving, and unfortunately in many cases destructive/deadly wildfires in multiple Northern Hemisphere regions spanning a wide range of climates & ecologies, but they all share one key commonality. [Thread]