Highs in Omaha the first part of this week are forecast to be in the 50s, but by the weekend they're expected to be in the 30s, perhaps lower.
The rapid switch in temperatures is the result of flip sides of the same coin.
A storm system moving in from the Pacific Ocean is the reason behind the roller coaster, said Tom Kines, a meteorologist with AccuWeather, The World-Herald's weather consultant.
Storm systems rotate in a counter-clockwise motion as they move across the continent (envision a hurricanelike swirl).
In front of this swirling storm system, winds from the south-southwest pull warmth into our region. As the storm leaves our area, winds on its backside swing down from the north and pull cold air into the region.
The storm itself is projected to hit Wednesday night into Thursday.
Because the storm still was offshore on Monday, no one is certain exactly where it will track across the continent. Once the storm crosses the Rockies, its path and potency will be much clearer.
Source: AccuWeather Inc., National Weather Service