The National Weather Service and AccuWeather both warn of severe weather that could affect the Southeast region, though forecasts remain uncertain.

On Tuesday at 1:36 a.m. an updated severe thunderstorm watch was issued by the NWS Fort Worth TX in effect until 5 a.m. The watch is for Collin, Delta, Fannin, Hopkins, Hunt, Kaufman, Lamar, Rains, Rockwall and Van Zandt counties.

The forecast from KXAS-TV (NBC5) is showing a 20% chance of rain in Dallas at noon, with rain chances slowly increasing over the rest of the afternoon. There is a 40% chance of rain at 3 p.m., which will increase to 80% by 5 p.m.

A severe thunderstorm warning was issued by the National Weather Service on Tuesday at 11:53 p.m. in effect until Wednesday at 12:45 a.m. for Cleburne County.

"The storm which prompted the warning has weakened below severe limits. Therefore the warning will be allowed to expire. However small hail and gusty winds are still possible with this thunderstorm. A Tornado Watch remains in effect until 9 p.m. for north central Texas," says the NWS Fort Worth TX.

A severe thunderstorm warning was issued by the National Weather Service in Denver at 2:53 p.m. May 18. It includes Larimer and Weld counties.

A rural North Texas school district canceled classes on Monday after a night of severe storms . Gordon ISD, located in Palo Pinto County, had extensive damage to school property and asked staff and students to stay off campus while emergency crews and insurance adjusters investigate.

At least six tornado sightings were reported in eastern Colorado on Sunday afternoon with at least one storm forecasters called “extremely dangerous.”