A nearly stationary frontal boundary will bring potential for heavy rainfall and flash flooding from Oklahoma into the Ohio River Valley over the next few days. Severe weather is also expected for parts the Southern Plains and the Lower Mississippi River Valley on Thursday and Friday with threats of tornadoes, strong winds and hail. Snow is expected for parts of the Cascades and Northern Rockies. Read More >
Coverage Map Notes
The coverage statistics and maps are calculated using a computer model and station data assuming ideal conditions. Coverage may be 5 to 10 percent below the computer predicted coverage for the following reasons: