Heavy Rainfall for the Mid-Atlantic; Heat and Wildfire Concerns for the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region today into tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the interior Northwest with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

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Last Map Update: Mon, Jul 14, 2025 at 2:34:32 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

Extreme Heat Warning

Heat Advisory

Heat Advisory (Heat Wave)

What is Moderate Heat Risk?

Heat Wave Safety

Vehicles in the Sun Heat up Fast Inside!

Cold Rivers and Streams Will Be Swift

Heat Advisory is in effect for the San Joaquin Valley, the West Hills and the Foothills of the Sierra Nevada. This includes the Yosemite Valley and the Lake Isabella areas. The Advisory will go into effect from midday Friday and extend through Tuesday evening. Expect high temperatures across these areas to reach up to and above 105 degrees during the period. Stay from the heat and drink plenty of water.

Expect triple digit heat to return to the San Joaquin Valley and the Kern County desert starting this weekend. Here is an infographic that defines Moderate Heat Risk and recommended actions to take. Basically, this level of risk means heat related illness is possible for sensitive groups of the population and those who are not accustomed to the heat. Take caution during the hottest part of the day which is usually from the late morning until the early evening hours.

Heat is the leading cause of weather-related fatalities each year. A heat wave is a period of abnormally hot and sometimes humid weather, generally lasting more than a couple of days. Heat waves have the potential to cover a large area, exposing a high number of people to a hazardous combination of heat and humidity, which can be very taxing on the body. During a heat wave, stay indoors in air conditioning.

Heat Related Deaths are Preventable! Look before you lock! The temperature inside a vehicle can quickly become dangerous. With an outside temperature of only 80 degrees, the inside of a vehicle can rise well above 100 degrees within 20 minutes and above 120 degrees within an hour!

If venturing into the rivers and streams, take caution, as the water will be flowing cold and fast! Also be careful not to slip on rocks and other slippery surfaces. Always wear a life vest and bring a life preserver.