Noticeably cooler Tuesday Details >
May 19, 2013; 1:28 PM ET Five-day Weather Forecast for San Francisco, CA
Emergency officials in Kansas are monitoring a reported tornado in the Wichita area.
Severe thunderstorms will begin to fire up later Sunday afternoon from Minneapolis to Oklahoma City. Large hail and tornados will be a major threat.
An ongoing cool weather pattern from the Rockies to the East Coast has been helping to keep a lid on the number of tornadoes for 2013.
Temperature and precipitation trends in AccuWeather's 30-Day Forecast can help with Memorial Day planning.