Marble-sized hail pelted the Siskiyou Mountains, the southern Oregon Cascades and parts of Jackson County on Friday, May 1, as fast-moving thunderstorms barreled north across the Rogue Valley. Doppler radar showed a strong cell near Kennedy Meadows, roughly ten miles west of Ashland, moving north at about 40 mph and producing bursts of hail, frequent lightning and gusty outflow winds. Forecasters warned the storms could catch hikers, motorists and outdoor visitors off guard during brief but intense downpours.
What forecasters said
The National Weather Service in Medford described the pattern as a spring convective setup, with a cutoff low and modest instability allowing isolated to scattered afternoon and evening storms over western Siskiyou and Jackson counties. NWS Medford put thunderstorm chances in many spots in the 15–30% range and cautioned that any stronger cell could produce lightning, small hail and gusty winds. Forecasters said activity was expected to diminish after sunset, although some showers could linger overnight.
Radar track and reported hazards
According to OregonLive, Doppler radar tracked a strong storm near Kennedy Meadows moving north at roughly 40 mph and warned the core could produce marble-sized hail, about 0.5 inches, with wind gusts up to 30 mph in places. Local recreation spots including Britt Gardens and trails managed by the Jacksonville Woodlands Association were named in reports as being impacted by lightning and brief hail. Emergency responders had not reported widespread structural damage in initial updates, but officials urged caution in exposed areas.
Lightning safety and what to do
Lightning remains a serious hazard: the National Weather Service notes thunderstorms produce roughly 20–25 million cloud-to-ground lightning flashes across the U.S. each year and result in about two dozen fatalities annually. National Weather Service guidance recommends seeking shelter inside a building or enclosed vehicle and waiting at least 30 minutes after the last lightning or thunder before resuming outdoor activity. Avoid lone trees, open ridgelines and metal objects while storms are within range.
What this means for locals
Late-spring convective storms like these can be fast, localized and tricky to forecast, so forecasters advise anyone planning hikes, outdoor events or travel through mountain passes to check current conditions before heading out. County emergency channels, park notices and National Weather Service products remain the best sources for rapidly changing details, and rescuers stress that moving to sturdy shelter at the first sign of lightning is the best way to avoid harm. Keep a close eye on short-term radar and weather alerts if you have plans in the mountains this weekend.
