Excessive Heat in the Interior West; Monsoon Conditions in the Southwest
Dangerous heat is expected to be in place across portions of California, especially the Central Valley, and across the Interior Northwest into Friday.
Heat Advisories will also be in place across the southern Plains into the Lower Mississippi River Valley. Monsoonal showers and thunderstorms may result in flash flooding and debris flows from the Four Corners region and Southwest through Friday.
Hazardous Weather Conditions
Marine Zone Forecast
Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.