Area Forecast Discussion
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
269 FXUS66 KPDT 261138 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 438 AM PDT Sat Jul 26 2025 .UPDATED AVIATION DISCUSSION... .AVIATION...12Z TAFs...VFR conditions will prevail through the entire period. CIGs will remain mostly SKC, with some scattered/few clouds later this evening/tonight at some sites. Winds will increase at all TAF sites generally after 16Z, with sustained winds ranging between 10-12 kts and gusts near 20-25 kts. The exceptions will be at YKM and PSC, which are expected to remain below 10 kts through the period. && PREV DISCUSSION... /issued 104 PM PDT Fri Jul 25 2025/ DISCUSSION...Satellite depicts clear conditions throughout the region thanks to the trough pushing out of the area. Expecting breezy winds to continue through the Gorge and Cascade Gaps, with temperatures getting to the high 80s/low 90s. Not seeing concerns for haze/smoke regarding the Burdoin Fire, but will always keep monitoring for sudden changes in the forecast. Expecting the clear conditions to persist through Saturday as the pattern begins to shift into a more trough-esque pattern starting on Sunday. A closed off low just offshore of Alaska will influence upper air patterns to a more SW/SSW flow that will dominate the synoptic side for the majority of the period. This will enable some moisture to enter the region and introduce pop- up showers/thunderstorms through next week. Storms are forecasted to become more widespread as we go through the week as the SW flow continues to build moisture, enabling more areas prone to thunderstorms. As we get later into next week, the chances for some potential thunderstorms increases (15-30% chance by Friday) for parts of the Columbia Basin and throughout the majority of the area. At the same time, a ridge just to the east will shift towards the west, building hotter air throughout the week leading to 40-60% chances of triple digit temperatures throughout the Basin on Tuesday and Wednesday. With confidence too low (5-15% chance) and about a week out, we`re only at the monitoring stage to see if this hazard progresses. NBM Heat Risk does blanket the region with a risk of 2, with a couple of pockets of 3`s, although will be curious to see how this changes with the recent trends on Wednesday increasing. Given the intense day time heating occurring with PoP chances increasing along with 250-550 J/KG of CAPE during peak heating hours according to the NBM, went ahead and introduced slight chances of thunder (15-24% chance) to all the PoP areas throughout next week. No current fire weather concerns throughout the weekend with the winds around the Cascade Gaps being the only hazard being closely monitored. Will need to pay attention with the expected thunderstorms and heat building up into mid next week. For now, red flag warnings are not being considered through Saturday. && .PRELIMINARY POINT TEMPS/POPS... PDT 89 59 90 61 / 0 0 0 10 ALW 89 62 91 66 / 0 0 0 10 PSC 92 58 93 60 / 0 0 0 10 YKM 89 58 91 60 / 0 0 0 0 HRI 91 59 93 61 / 0 0 0 10 ELN 85 56 88 58 / 0 0 0 0 RDM 86 47 87 51 / 0 0 10 10 LGD 86 56 88 58 / 10 10 10 20 GCD 89 55 89 56 / 10 10 20 30 DLS 86 60 89 63 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...95 LONG TERM....95 AVIATION...99