RIVERTON – An upper level low will push across the region today. This will bring isolated to scattered showers and thunderstorms across much of the forecast area. There will be a slight risk for severe thunderstorms today, mainly across Johnson and Natrona counties. An isolated strong storm will also be possible across the central and northern forecast areas. Today’s main severe weather threats will be strong winds and large hail. Slightly below normal temperatures are expected for today. A few isolated light snow showers could also be possible across the highest peaks of the northwestern mountains today. Shower activity will diminish across the state tonight. High pressure will bring warmer near normal temperatures and dry conditions for Sunday.