A tornado warning is in effect for parts of two Wyoming counties until 4 p.m. Monday, according to the National Weather Service.

The warning is for north-central Hot Springs and northwestern Washakie counties. 

At 3:37 p.m., a severe thunderstorm capable of producing a tornado was located 13 miles north of Legend Rock State Petroglyph Site.

A tornado and half-dollar size hail are listed as hazards. Radar indicated rotation.

People in the area are urged to take cover immediately and avoid windows.