735 FXUS66 KPDT 250527 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1027 PM PDT Thu Jul 24 2025 .UPDATED AVIATION...06Z TAFs...VFR conditions will persist through the forecast period. Winds will remain breezy at DLS near 19 kts and gusts near 25 kts. All other sites will remain below 10 kts through the much of the night before winds increase beginning at 12-15Z for PSC and ALW, 15-17Z for YKM/PDT and 20-22Z for RDM/BDN respectively. Winds will range (9-15)G(15-22)kts at PSC/ALW, (14-17)G(21-25)kts at YKM/PDT and (7-12)G(15-19)kts RDM/BDN. CIGs will remain mostly SKC with a few patchy FEW250 at YKM and PSC. Bennese/90 && .PREV DISCUSSION... /issued 414 PM PDT Thu Jul 24 2025/ DISCUSSION... Today through Saturday...Warm dry, breezy to locally windy conditions will persist for the next couple of days. No expected thunderstorms through Friday, but there is a general risk along the edge of Grant and Wallowa counties Saturday based on SPC Outlook. High temperatures will exceed into the mid/upper 90s today. However, temps may cool by a few degrees tomorrow through Saturday due to the approaching shortwave trough from the British Columbia area. Daytime RHs will be in the upper teens and low 20s through Friday over the eastern mountains and Columbia Basin. There may be locally low RHs in the upper teens around Crook county and portions of Grant county Saturday, but will slightly improve for most locations. Breezy to locally windy conditions may develop across The Gorge and Kittitas Valley through this period, though with the remaining forecast area having light to breezy winds. Feaster/97 Sunday through Thursday...Dry southwesterly flow will start the extended period on Sunday. Heights will rise into midweek as the region is on the western periphery of a large ridge over the midsection of the country. As the heights rise, the flow will also turn more southerly, which will also allow for more moisture to move into the area by the middle or end of the week. There are low chances(10-20 percent) of mainly mountain thunderstorms across central Oregon and the Ochoco-John Day Highlands on Monday and Tuesday. There is potentially a petter chance toward the middle and latter part of the week, depending on how how much moisture moves in to the area. High temperatures will rise each day through midweek, then peak around Tuesday/Wednesday before decreasing on Thursday. High temperatures will reach around the triple digits in the Columbia Basin, Foothills of the Blue Mountains, Yakima and Kittas Valley. These temperatures will be about 10 degrees above normal. The ECMWF EFI does start to focus in on these temperatures, with values in the 0.6 to 0.7 range. NBM probabilities of high temperatures >=100 degrees across the Basin and nearby locations on Tuesday and Wednesday are 50-70 percent. && .PRELIMINARY POINT TEMPS/POPS... PDT 61 90 57 87 / 0 0 0 0 ALW 65 90 62 87 / 0 0 0 0 PSC 61 93 57 90 / 0 0 0 0 YKM 60 90 57 87 / 0 0 0 0 HRI 63 92 59 89 / 0 0 0 0 ELN 60 83 55 82 / 0 0 0 0 RDM 49 87 47 84 / 0 0 0 0 LGD 56 88 54 85 / 0 0 0 0 GCD 55 89 54 88 / 0 0 0 10 DLS 63 84 60 83 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...97 LONG TERM....77 AVIATION...90