Weather blog: Unstable pattern after Monday

Enjoy the 70s and filtered sunshine on Monday with a rainy streak to follow.

INDIANAPOLIS — The astronomical spring started strong on Sunday, and Monday will be even hotter. With a mix of sun and cloud pairing with a south-southwesterly wind delivering high 70s, it’s our “pick of the week” for weather in central Indiana this week. Please take advantage of the mild air and dry weather as a wet stretch starts Tuesday and lasts about three days.

The rain spread through the state Tuesday morning and became more widespread by midday. The rain will be heavy at times from the afternoon to Wednesday with the potential for thunderstorms.

At this time, it looks like the greatest pattern for severe weather is likely to remain in our south, but we’ll be watching for updates as temperatures on Wednesday hit the 60s and rotation/humidity limited to low level could increase.

Rainfall amounts exceed one inch in some places and localized rainfall of 2-3 inches may occur, meaning we will have to watch for flooding.

An unstable upper air pattern is moving over the Ohio Valley to keep showers around Thursday with 40 seconds, like Saturday. A stronger push of colder air is possible this weekend, and it may be cold enough for mixed showers at times.