Area Forecast Discussion
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
784 FXUS66 KPDT 260518 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1018 PM PDT Fri Jul 25 2025 .UPDATED AVIATION...VFR conditions will persist through the forecast period with winds below 10 kts at sites PDT/RDM/BDN and above 10 kts at ALW/PSC/YKM with gusts to near 15 kts at DLS. CIGs will remain mostly SKC with some scattered and few clouds making an appearance later in the period. Winds will increase across the TAF sites late in the period after 16Z ranging between 10-15 kts and gusts to near 20-25 kts while YKM/PSC will see a decrease. Bennese/90 && 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 59 88 59 89 / 0 0 0 0 ALW 63 89 63 89 / 0 0 0 0 PSC 58 92 58 92 / 0 0 0 0 YKM 57 88 58 90 / 0 0 0 0 HRI 60 90 60 92 / 0 0 0 0 ELN 55 84 56 87 / 0 0 0 0 RDM 48 86 48 87 / 0 0 0 0 LGD 55 87 55 88 / 0 10 0 10 GCD 53 89 54 89 / 0 10 10 10 DLS 61 84 60 88 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...95 LONG TERM....95 AVIATION...90