The National Weather Service says isolated thurnderstorms are possible late this afternoon and into this evening. They say a complex system is developing in Nebraska, and could reach eastern Iowa by midnight. Severe weather is possible throughout the weekend and into next week. The National Weather Service says it's too early to identify specific threats, but they say there is potential for heavy rainfall and flash flooding. In case of severe weather stay tuned to KCII for Severe Weather Action Team Coverage.