Flash Flood Threat for 6 States in the West, 6 States in the South

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Thunderstorms will span the southern corridor today as well as the western half of the US, bringing the threat of flash flooding to nearly 2 dozen states, while some areas have already experienced significant flooding.

Major flash flooding threat in the West

A number of areas in the West are vulnerable to flash flooding due to burn scars from this season’s wildfires, where 0.5 inches of rain in less than an hour can cause a flash flood. Another factor is complex terrain and even urban areas are not immune. Massive flooding has already occurred in Utah. Residents in California and Texas have already experienced power outages.

At least 6 Western states are under flash flood warnings and another 6 are under flash flood watches in the western US on Monday.

On Tuesday, the flooding threat will continue in the West, moving eastward over Wyoming, Colorado and New Mexico.

The National Weather Service (NWS) has issued the following warnings for Western states for Monday:

Flash flood warning: southeastern California and deserts; southern Nevada; Western Arizona; northeast Oregon; central and eastern Washington; northern Idaho.

Flash flood watch: northern and central New Mexico; central and western Colorado; central and eastern Utah; central and western Wyoming; southeastern Idaho central and western Montana.

Flood advisory: central Texas.

Flooding threat in the South

Thunderstorms will span the southern corridor of the US on Monday, putting several states under the threat of potential flooding.

The National Weather Service (NWS) is warning that heavy rain could bring the potential for flash flooding across the South. The affected areas are East Texas along the Louisiana border; central and southern Louisiana; Southern Mississippi; southern Alabama; southern Georgia; northern Florida, including the Panhandle; southern South Carolina.

On Tuesday and Wednesday, the flooding threat will continue, moving eastward over parts of Georgia, South Carolina, North Carolina and Virginia along the eastern seaboard.

Temperature Outlook

High temperatures in the West are expected to drive afternoon thunderstorms in the region, bringing not only the threat of flash flooding but also dry thunderstorms that could spark additional wildfires.

Very high temperatures are forecast for the region in the Northwest, Billings is expected to reach 97, Boise 93, Portland 95, Minot and Rapid City 92. Hot in the Southwest, 107 Las Vegas in 109, and Phoenix.

The East will experience a bit of a cool down with temperatures in the low 80s.

In the South, high temperatures in the high 80s and low 90s.

In the central US, temperatures will range from the low to high 80s.