547 FXUS66 KPDT 060547 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1047 PM PDT Fri Jun 5 2026 .Updated Aviation Discussion. .KEY MESSAGES... - Showers and isolated thunderstorms along the Cascade crest Saturday. - Breezy winds in the lower elevations through Sunday. - Another system will bring additional shower and thunderstorm chances Monday through Wednesday. && .DISCUSSION... An upper low and trough was moving onshore and will bring shower and low thunderstorm (<20 percent) chances mainly to the Cascade crest on Saturday. The trough will move east of the area on Sunday and weak ridging will move in later Sunday. Expect most of Sunday to be dry. Another upper low and trough will then move towards the area on Monday and cross the region on Tuesday before departing on Wednesday. Dry weather looks to be in store for the remainder of the week. As the trough moves through into Sunday, there will be gusty winds in the 25 to 35 mph range both this afternoon and evening and Saturday afternoon and evening. On Sunday, there will still be gusty winds but a bit lower, likely on in the 20 to 30 mph range. NBM probabilities of wind gusts >= 39 mph on Saturday are 50 to 80 percent across the Simcoe Highlands and portions of the Columbia Basin and Cascade Gaps. Another round of gusty winds develops on Tuesday with the next trough and continue into Wednesday. NBM probabilities of wind gusts >= 39 mph is 40 to 80 percent on Tuesday and 30 to 70 percent on Wednesday across the Kittitas Valley, Simcoe Highlands, Cascade Caps and Columbia Basin. && .AVIATION /06Z TAFS THROUGH 06Z SUNDAY/... VFR conditions currently across all sites, which will stay the course through the period. Breezy winds at KDLS with gusts of 20-25kts, which will extend across all terminals by mid-morning and persist through much of the day before slowly subsiding Saturday evening. Ceilings will drop to 6-7kft by late morning as well, with a 30% chance of light showers for KDLS late morning through late afternoon. Elsewhere rain chances are minimal (<10%) and not anticipated. 75 && .FIRE WEATHER... With gusty winds through Sunday fire weather concerns will remain elevated through the weekend mainly for the Oregon Columbia Gorge and Simcoe Highlands. RH values will decrease on Sunday, but winds will too, though they will remain gusty, in the 20 to 30 mph range. By midweek, RH values may tick up a bit as the next period of gusty winds move in to the Simcoe Highlands, Columbia Basin, Simcoe Highlands and Kittitas Valley. Wind Gusts of 25 to 35 mph and possibly to 40 mph could occur. MIN RH values will generally be 30 to 45 percent, though there will be some locations in the lowest elevations 20 to 30 percent. && .Preliminary Point Temps/PoPs... PDT 44 66 41 70 / 0 0 0 0 ALW 50 67 45 70 / 0 0 0 0 PSC 47 71 42 75 / 0 0 10 0 YKM 43 68 40 74 / 0 20 10 0 HRI 46 69 41 73 / 0 0 0 0 ELN 38 60 36 66 / 0 40 10 0 RDM 37 62 29 70 / 0 0 10 0 LGD 44 63 38 67 / 0 0 10 0 GCD 41 65 36 68 / 0 0 20 0 DLS 48 66 44 72 / 0 40 20 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...77 AVIATION...75 FIRE WEATHER...71