FXUS66 KPDT 191700 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1000 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 /18Z TAFS THROUGH 18Z WEDNESDAY/... VFR conditions will persist through the forecast period. CIGs will be mostly FEW/SCT 25kft with winds picking up at RDM/BDN after 21Z to 8-10G17-20kts, while DLS is currently breezy at 14G24kts and ALW is at 14kts sustained. Winds will settle after 4-6Z. All other TAF sites will see winds 10 kts and below. 90 && .Preliminary Point Temps/PoPs... PDT 72 46 73 46 / 0 0 0 0 ALW 72 50 73 49 / 0 0 0 0 PSC 77 49 79 51 / 0 0 0 0 YKM 75 47 78 49 / 0 0 0 0 HRI 75 48 76 48 / 0 0 0 0 ELN 68 43 72 44 / 0 0 0 0 RDM 72 37 73 39 / 0 0 0 0 LGD 68 40 70 41 / 0 0 0 0 GCD 70 39 73 39 / 0 0 0 0 DLS 73 50 77 50 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...71 AVIATION...90