10 States Under Flood Alerts, Heavy Thunderstorm Activity Next 4 Days

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Thunderstorm activity across the US will ramp up over the next four days, with ten states under flood alerts for Thursday as heavy rain will continue, particularly in the West. See the latest weather news, alerts, and four-day forecast.

NWS weather alerts for Thursday

Here are the latest weather alerts from the National Weather Service (NWS) for Thursday.

Excessive heat warning: Washington.

Heat advisory: Washington; northern Idaho; most of Oregon; northern central, and southern California.

Flood warning: southern Texas.

Flood watch: Southern Utah; extreme western Texas; Arizona; New Mexico.

Red flag warning: southern Oregon; northern California.

Northern lights visible through Friday, will drift farther south

Geomagnetic storms are likely to bring the northern lights farther south and make them visible on Thursday night, extending into Friday night, scientists say. The light show could possibly be visible to such places as Oregon, Iowa, and Pennsylvania, WTAE reported.

4-day forecast: Widespread thunderstorms and flooding threat

Here is the latest four-day forecast from the National Weather Service (NWS).

Thursday: Thunderstorms, widespread flood threat, heat alerts

One more day of dangerously high temperatures in the West (see heat alerts above).

Thunderstorms over most of the nation. Heavy rain with potential flooding over Nevada, Utah, Arizona, New Mexico, Louisiana, Mississippi, Alabama, Florida, and the coastal areas of Georgia and South Carolina (See flood alerts above).

Friday: Scattered thunderstorms, major flood threat in Southwest

A tropical wave is expected to move into the southwestern Gulf of Mexico, heading towards Texas on Friday, with a 30% chance of tropical development, according to the NOAA.

Scattered thunderstorms over much of the nation. Heavy rain in the Southwest will bring a strong potential of flash flooding over most of Utah, nearly the entirety of Arizona and much of New Mexico, southwestern Colorado, and the western edge of Texas.

Saturday: Thunderstorms, strong flooding threat

Thunderstorms much of the West and Southwest, as well as most of the eastern half of the nation, with the exception of the Northeast.

Most of the Southwest will continue to experience heavy rain with the threat of flash flooding over more than half of Arizona, nearly all of New Mexico, and into western and northern Texas.

Sunday: Thunderstorms, flooding risk

Thunderstorms will continue over the southern tier of the US, stretching from the Southwest to the Southeast, with strong storms bringing plentiful precipitation over the upper Midwest and Ohio Valley.

Heavy rain will bring a significant threat of flash flooding to southeastern Arizona, central and southern New Mexico into northern Texas. Heavy rain is also possible for parts of eastern Texas, the southern parts of Louisiana, Mississippi, Alabama, and the western Florida Panhandle.