Sacramento, Calif. – Before you head to the lake or launch into the river, take a moment to check the forecast — because lightning can strike long before the rain reaches you.
More than 60% of lightning fatalities happen during outdoor recreation, often during everyday activities like boating, fishing and swimming. In Northern California, the risk increases in late spring and peaks during the summer months when thunderstorms develop over the Sierra Nevada and drift into foothills and valleys.
Here’s what catches many people off guard: lightning can strike miles away from the heaviest rain. Skies may look partly clear overhead while storms build over higher terrain. If you can hear thunder, you are already within striking distance.
Open water increases vulnerability. Popular destinations such as Lake Tahoe, Shasta Lake, Folsom Lake, the American River and stretches of the Sacramento River draw heavy seasonal crowds. Fishing rods, aluminum boats, docks and exposed shorelines offer little protection, and a direct strike can cause serious injury or disable onboard electronics.
Safety officials emphasize a simple rule: at the first sound of thunder, leave the water immediately and move inside a fully enclosed building or hard-topped vehicle. Picnic shelters, marina overhangs and trees do not provide safe protection.
For students, seasonal workers and summer visitors, peak recreation season also aligns with peak lightning danger.
Checking the forecast before heading out — and being willing to delay plans — can prevent a routine Northern California outing from turning into an emergency.
