Thunderstorm Chances Increase Across Southern Oregon, Northern California

Got story updates? Submit your updates here. ›

The National Weather Service in Medford is forecasting a heightened risk of thunderstorms across southern Oregon and far northern California on Thursday, with storm chances increasing to 30-60% from the afternoon into the evening hours. While the overall severe threat remains low, any storms that develop could produce wind gusts between 30 and 45 mph, brief downpours, and frequent lightning.

Why it matters

Thunderstorms in this region can quickly disrupt travel, outdoor activities, and power grids, making it important for residents to stay weather-aware and take shelter at the first sign of thunder. The increased storm chances come as the area transitions into the spring severe weather season.

The details

According to the National Weather Service, the storm chances will begin around 2 p.m. on Thursday and continue through 11 p.m., with the highest coverage expected between 4 p.m. and 9 p.m. Cities including Medford, Ashland, and Klamath Falls are within the primary zone for storm development, with activity pushing north from California during the late afternoon and evening hours. Brief downpours and lightning strikes could disrupt travel along I-5 and Highway 97, especially during peak evening commute times.

• Storm chances increase to 20-35% beginning around 2 p.m. Wednesday, with activity continuing through 10 p.m.
• Thunderstorm chances increase to 30-60% on Thursday, lasting from 2 p.m. through 11 p.m.

What’s next

Residents should stay weather-aware, move indoors at the first sound of thunder, and secure outdoor items that could be blown around by gusty winds. Storm chances are expected to taper late Thursday night, but additional unsettled weather may follow into the end of the week.