Mild Evening with Light Winds, Dry Conditions Persist. Stay Cautious for Fire Weather Alerts.

Tonight:

• Temperature: Mild evening with clear skies.

• Winds: Light winds from the west to southwest.

• Fire Weather: Stay cautious; dry conditions persist.

Tuesday :

• Upper Level Ridge : Expands northward.

• Low Pressure System : Moves towards the SW coast of Oregon, increasing southerly flow into central Oregon.

• Moisture : Monsoon moisture returns to the forecast area.

• Thunderstorms : Isolated thunderstorms in the late afternoon and evening across central Oregon.

• Tuesday Night and Wednesday :

• Low Pressure System : Moves into western Oregon and then across eastern Washington.

• Thunderstorms : Possible overnight and into Wednesday morning, moving northward across the area. Lingering thunderstorms may persist into midday Wednesday, especially in the northern and eastern areas.

• Temperatures : Begin to rise again, with moderate heat risk overall. Major heat risk possible in the Lower Columbia Basin on Tuesday and Wednesday, potentially leading to heat advisories.

Long-Term Forecast: Thursday through Monday

• Overall Pattern :

• High pressure ridge remains over the West through Sunday.

• A shortwave passes to the northwest on Thursday.

• Uncertainty increases by Monday with potential for a Pacific low to move onshore into the Pacific Northwest or deflect into British Columbia.

• Weather Conditions :

• Hot and dry area-wide, with breezy to locally windy conditions on Thursday and Monday.

• Heat Risk :

• Peaks over the weekend with widespread moderate and major heat risk.

• High chance (>90%) of afternoon highs reaching 90+ degrees through Sunday, dropping to 55-85% on Monday.

• For 100+ degrees, highest confidence (40-85%) is over the weekend.

Stay safe, stay cool, and keep an eye on any updates for fire weather alerts!

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