A dense fog advisory is in effect for all of central Indiana this morning due to a combination of moist air, cool temps, and calm winds. The fog should begin to lift by 10 am allowing the rest of the day to be cloudy with light winds and highs in the low 40s. A potent storm is forming in the Southern Plains and will bring us periods of rain, heavy at times, through Sunday afternoon. Total accumulations could be up to an inch and a half. That could cause some minor flooding issues along small drainage ditches or streams.
The upper air pattern has a negatively tilted trough beginning to eject into the Plains causing ridging over the Southeast and Ohio River Valley. This will cause the flow aloft to be primarily out of the south allowing warmer temperatures and moisture to enter the area. Temperatures will rise into the mid 50’s Saturday before the cold air returns for next week. Unfortunately the rain will limit the ability to finish up raking leaves or finishing any last outdoor preparation before winter officially begins.