Our teams have activated a Bureau of Meteorology warning for Tuesday into Wednesday morning. Multiple rounds of thunderstorms are possible, some of which may become severe. The risk of flash flooding will also increase overnight into early Wednesday morning.
Most areas in No. 6 area belong to level 3 severe thunderstorm enhanced risk areas. The upgrade focuses on a series of storms expected to roll through the region early Tuesday afternoon. These storms may produce scattered straight-line wind gusts up to 60-75 mph. Scattered hail is also possible during play this afternoon, possibly quarter to golf ball sized hail. The threat of tornadoes is lower during the afternoon storm, but the possibility of a brief spin cannot be completely ruled out.
A severe thunderstorm warning will remain in place for most areas until 4pm.
A second round of possible severe weather could develop overnight, with scattered threats of high winds and hail. But the greater threat overnight and into early Wednesday morning is that areas of heavy rain could develop and repeatedly move into the same areas, possibly leading to flash flooding.
There is still some uncertainty as to where the storm will develop overnight, but the most likely scenario is that the storm's breakline will shift from southern Illinois to western Kentucky. Wherever the storm occurs in the region, narrow bursts of rain totaling at least 3-5 inches are possible, which could lead to severe flash flooding. Development begins, making it difficult to spot where there may be standing water on the road.
Make sure you have the WPSD Radar app open and notifications enabled to receive alerts. Be sure to stay tuned to the Weather Service today and tonight to track these storms.
