FXUS66 KPDT 191056 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 356 AM PDT Tue May 19 2026 .KEY MESSAGES... - Breezy to locally windy Today - Continued dry with a warming trend this week && .DISCUSSION... Later This Afternoon and Evening, breezy gap winds will develop across the Cascades mainly the Eastern Columbia River Gorge and the Kittitas Valley, with gusts of 15 to 25 mph around DLS and ELN, and higher gusts. This is in part to an upper ridge building across the region with increased cross cascade gradients. NBM members indicate about a 30 to 60% chances for wind gusts 40 mph or higher, between about 4 and 8 pm this evening. The next feature is a shortwave modeled to swing southeast through the Northern Rockies of Montana into CO Wednesday Evening, turning winds from light and variable or westerly, to definitively an northeasterly , but still light, on Thursday. Temperatures will still be trending warmer though this period although HeatRisk is still computed in the category1 level. Significant differences or spread is seen in the ensembles and specifically the cluster analysis for the weekend, with respect to the timing and depth /amplitude of an approaching west coast 500 mb trough days 5-7. These patterns do not have significant implications for wind or precipitation other than cluster3 (the flat ridge) being drier than the rest, with at 26% of the member by Monday keeping the mountains zones dry whereas other clusters forecast at least a few hundredths of an inch of light rain in the Columbia Basin and even wetting rains in the Cascade Crest on a 24 hour basis. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Dry, VFR flight category conditions are expected for the duration of the TAF period. Gusty winds are anticipated at ELN and DLS due to mountain gap winds developing earlier in the day. PSC and PDT should also have breezy southwest winds. && .Preliminary Point Temps/PoPs... PDT 72 45 73 46 / 0 0 0 0 ALW 72 50 73 49 / 0 0 0 0 PSC 77 48 79 50 / 0 0 0 0 YKM 75 47 79 50 / 0 0 0 0 HRI 75 48 77 48 / 0 0 0 0 ELN 68 43 73 45 / 0 0 0 0 RDM 72 37 74 39 / 0 0 0 0 LGD 68 40 70 41 / 0 0 0 0 GCD 70 38 73 39 / 0 0 0 0 DLS 73 49 78 50 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...71 AVIATION...71