Intense thunderstorms are predicted to impact parts of the Southeast and Florida, bringing the possibility of large hail, damaging winds, and heavy downpours. These storms could lead to flash flooding and isolated tornadoes.

Significant rainfall is anticipated across much of the Southeast this week, with some areas in the Carolinas and the Florida Panhandle potentially seeing up to 8 inches. A widespread area covering most of South Carolina, Georgia, and Northern Florida is expected to receive 3 to 5 inches of rain.

National weather forecast for Monday, June 19. (Fox News)

Texas and Louisiana are set for another week of extreme heat, with temperatures exceeding 100 degrees. Coupled with high humidity, these conditions will make extended outdoor activity dangerous.

Forecast high temperatures for southern states on Monday, June 19. (Fox News)

Numerous excessive heat warnings and advisories are currently in place across dozens of counties in Texas, New Mexico, Oklahoma, Louisiana, and Mississippi.

Projected rainfall totals for the Southeast this week. (Fox News)

Fire danger is critical in Arizona and New Mexico.

Furthermore, there is potential for tropical development in the Atlantic, but it's premature to determine what impact, if any, this might have on the U.S.