Complex sentence: The Storm Prediction Center is tasked with forecasting the risk of convective severe weather in the contiguous United States, and issues convective outlooks, mesoscale discussions, and watches as a part of this process.
Split into simpler sentences: The Storm Prediction Center is tasked with forecasting the risk of convective severe weather in the contiguous United States. The agency issues convective outlooks, mesoscale discussions, and watches as a part of this process.