Multiple rounds of heavy rain producing storms expected through early Monday
Update as of early Sunday Morning...
Keep the umbrellas handy through early Monday afternoon. We could see a few extra inches of rain on top of what we've seen. 2-5" total amounts are possible widespread. There will be plenty of dry time of Sunday before more rain and storms move in overnight. Keep in mind the Flood Watch stays in effect until 1 pm Monday.
Rainfall amounts overnight into Sunday morning...
More we can expect...
It continues to be hot and very humid across southeast Wisconsin this evening, and that will fuel heavy rain producing storms overnight into Sunday morning. A line of storms in western Wisconsin is thankfully moving east at 45 mph because it's producing 1-2 inches of rain per hour.
Additional storms will develop in a west to east orientation behind this line overnight, making the rain continue into Sunday morning.
We'll have a break from the very heavy rain/storms Sunday afternoon and evening, but there will still be isolated showers around that will produce downpours. Round two of storms moves in overnight Sunday night, exiting by midday Monday with the passage of the cold front.
Any showers and storms over the next 36 hours will be very heavy rain producers, at least 1" per hour. Most of southeast Wisconsin will likely pick up 1-2" of rain, but spots that see multiple storms track over the same area will see multiple inches of rain, locally 3-5"+. (DO NOT focus on specific totals for specific locations since track of individual storms is TBD. Main idea is multiple storms hitting the same spot = multiple inches of rain)
Give the threat for very heavy rain, a Flood Watch has been issued for all of southern Wisconsin from 1am Sunday through 1pm Monday.
Humidity will drop Monday afternoon after the cold front rolls through. Download the CBS 58 Ready Weather App to track the storms and to get flood alerts.