A new severe thunderstorm watch has been issued for much of southern portion of the News 9 viewing area.

Included in the new watch, which lasts until 6 a.m., are Caddo, Canadian, Carter, Cleveland, Garvin, Grady, Hughes, Jefferson, Love, McClain, Murray, Pontotoc, Pottawatomie, Seminole and Stephens counties.

This is in addition to a severe thunderstorm watch that had been issued for central and north-central portions of Oklahoma until midnight.

Storms that had featured hail and high winds turned into more of a heavy rain and flooding event by late Monday night.

Stay with News 9 throughout the evening for updates.