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 In the West, monsoonal moisture will spread across southwestern California and the Four Corners, kicking up afternoon monsoonal showers and thunderstorms.
Expect possibilities of flooding and flash flooding to remain with this activity.
Meanwhile, high pressure ridging in the south-central U.S. will maintain hot and humid conditions from the
central and southern Plains through the western Tennessee Valley and mid-South. Expect various
heat advisories and excessive heat warnings to remain in effect as daytime highs reach from 100 to 110 degrees.
In the Midwest, a frontal disturbance with low pressure will drop across the
upper Midwest and central Plains with showers and clusters of thunderstorms.
Finally, in the East, a trough of low pressure lingers over the eastern third of the nation and supports areas of showers and thunderstorms, while disturbances push into the region from the west.
Temperatures in the Lower 48 states Wednesday ranged from a morning low of 32 degrees at Truckee-Tahoe, Calif., to a high of 113 degrees at Chandler, Okla.
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