Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

Monsoonal flow coinciding with a frontal boundary will focus more showers and thunderstorms across the central Great Basin, central Rockies, Southwest into the Southern Plains. Heavy rainfall may bring about instances of flash flooding. Meanwhile, record setting heat continues for the Pacific Northwest through Monday. Heat combining with dry conditions could allow for any fires to quickly spread. Read More >

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Last Map Update: Sun, Aug 24, 2025 at 2:04:28 pm PDT

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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Extreme Heat Warning

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Hydrologic Outlook

Extreme Heat Warning and Heat Advisories

Major HeatRisk

Heat & Limited Overnight Reset

Extreme Heat Warnings and Heat Advisories have been issued for a late season heat event for the lower elevation locations across central and northeast Oregon, as well as across south central and southeast Washington. Major to Locally Extreme HeatRisk will develop across portions of the Columbia Basin, Eastern Columbia River Gorge, and adjacent valleys/foothills while Moderate to locally Major HeatRisk will develop over portions of central Oregon, John Day Basin, Grande Ronde Valley, and the Wallowa Valley.

🥵Heat & Limited Overnight Reset🥵 3 Things to remember as we go into this late season heat wave 1) This isn't just a daytime problem, the nights are breaking records with warm lows. 2) Peak highs are only one part of the story: Lows and heat duration enhance and compound heat-related impacts. 3) While lows can provide relief to daytime accumulated heat stress, warm lows add to the heat stress for it to be carried into successive days. Everyone is at risk from the dangers of extreme heat, but these groups are more vulnerable than most. Ensure that your loved ones and neighbors are safe from the heat and remain Weather-Ready. weather.gov/safety/heat-during.

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Heavy Rainfall for Portions of the West and Southern Plains; Dangerous Heat for the Northwest

NWS Forecast Office Pendleton, OR