HOUSTON -

Severe weather is possible today from Texas to Iowa.  Heavy snow is migrating from Wyoming to Wisconsin.  Parts of South Dakota are expecting over a foot of snow.  In Minnesota, 6 inches to a foot.  Winter storm warnings and winter weather advisories abound on the weather map!

It's all part of a potent storm we've been keeping an eye on for several days.  The storm's energy, in the form of a strong upper-atmospheric low pressure  system over the Rocky Mountains interacting with abundant surface heat and humidity surging into the U.S. from the Gulf of Mexico and cold polar air dropping in from Canada, is beginning to peak and will continue to cause major problems for the middle of the country for the next two days.

A slight risk for severe weather, including gusty wind, large hail and isolated tornadoes, exists today for areas from south-central Texas to Iowa.  The region from Wichita Falls, Texas, to Oklahoma City and Tulsa, Okla., will see the greatest risk for severe weather today.

On Wednesday the risk area will shift eastward -- from southeast Texas, including Houston, to Louisiana and north to Illinois, Indiana and Ohio.