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Widespread Heat Keeps Its Hold Over The West
August 12, 2025 at 01:02 PM EDT
By WeatherBug Meteorologist, Dan Rupp
Temperatures will soar once again today from the Pacific Northwest to the Desert Southwest.
A broad area of high pressure aloft will hold in place across the western U.S., putting expansive areas into dangerous heat.
The National Weather Service has issued Heat Advisories from southern California and central Arizona to Washington state and northern Idaho. Extreme Heat Warnings are also in effect for portions of the West where temperatures could easily break the 100 degree mark.
Many lower elevation areas will feel temperatures rise into the upper 90s today, with some valleys getting into the triple digits. A few daily temperature records could be tied or broken up and down the western U.S.
Fortunately, this heat wave should be relatively short-lived for many as thermometers start to cool somewhat by mid-week as the high pressure system weakens.
If you must go outdoors, prepare by staying hydrated and keep a watchful eye for any signs of heat-related illnesses such as heat stroke and heat exhaustion. Wear the right clothing, such as loose-fitting, lightweight and breathable fabrics, and take many breaks within a cool and shaded area.
Make sure to take extra precautions for children and the elderly as they are more susceptible to heat-related illness. Never leave children or animals alone in a locked vehicle as it can become dangerous and potentially fatal. Do not forget to download the WeatherBug app to stay up to date on the latest for this dangerous western heatwave.
A broad area of high pressure aloft will hold in place across the western U.S., putting expansive areas into dangerous heat.
The National Weather Service has issued Heat Advisories from southern California and central Arizona to Washington state and northern Idaho. Extreme Heat Warnings are also in effect for portions of the West where temperatures could easily break the 100 degree mark.
Many lower elevation areas will feel temperatures rise into the upper 90s today, with some valleys getting into the triple digits. A few daily temperature records could be tied or broken up and down the western U.S.
Fortunately, this heat wave should be relatively short-lived for many as thermometers start to cool somewhat by mid-week as the high pressure system weakens.
If you must go outdoors, prepare by staying hydrated and keep a watchful eye for any signs of heat-related illnesses such as heat stroke and heat exhaustion. Wear the right clothing, such as loose-fitting, lightweight and breathable fabrics, and take many breaks within a cool and shaded area.
Make sure to take extra precautions for children and the elderly as they are more susceptible to heat-related illness. Never leave children or animals alone in a locked vehicle as it can become dangerous and potentially fatal. Do not forget to download the WeatherBug app to stay up to date on the latest for this dangerous western heatwave.