National Weather Service United States Department of Commerce

Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

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Last Map Update: Tue, Jul 21, 2026 at 1:02:22 pm PDT

Tropical Storms and Hurricanes that are far away can still create deadly rip currents and waves, especially sneaker waves. Never assume that the ocean is safe, even if the weather is nice. For maximum safety, swim near a lifeguard (where applicable) and check beach conditions.
Heating Up Today: Heat Advisory in Effect Until 9 PM ☀️🌡️ Hot conditions return to the region today! A Heat Advisory remains in effect through 9 PM this evening as interior temperatures climb significantly. Here are the details on what to expect: What: High temperatures reaching the mid-90s to low 100s. Where: The entire Bay Area (excluding San Francisco and the immediate Pacific coast zones) and the interior Central Coast. When: Through 9 PM Tuesday evening. Impacts & Safety Reminders: 🥵 Heat Illness Risk: Hot conditions can cause heat-related illnesses if outdoors for extended periods, especially with physical exertion. 💧 Stay Hydrated: Drink plenty of water throughout the day—don't wait until you are thirsty. 🌳 Take Breaks: Schedule frequent rest breaks in shaded or air-conditioned environments. 🚗 Look Before You Lock: Never leave children or pets unattended in vehicles.

 

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