Heavy rain is likely today with 2" to 4" of rain possible by early Sunday morning. This will cause street flooding and reduced visibilities.
River flooding is likely. This will affect rivers, streams, and creeks, causing them to come out of their banks. Flood Warnings and Flood Watches are in effect for Central Indiana.
Frozen ground, snow melt and heavy rain will cause the significant flooding. Temperatures will hold near steady in the mid 40s today.
A few isolated thunderstorms will be possible today with a few severe thunderstorms possible in southeastern Indiana.
The best chance for t-storms will be this afternoon and evening. Lightning and gusty winds of 30 mph will be possible. An isolated tornado can't be ruled out.
Record rainfall is possible today. The record for today is 1.49" set back in 1918. It could also rank to one of the wettest December days ever. The wettest December day was 3.46", set back on December 3, 1873.
Temperatures will slowly rise during the overnight, into the mid 50s by Sunday morning. Then temperatures will slowly tumble throughout the rest of the day. Temps will be in the low 30s by 5pm. Rain will taper off by morning with a few snow showers possible Sunday evening. A light dusting of snow will be possible.
A few light snow showers will be possible on Monday. Christmas Day looks mainly dry with partly sunny skies but a few light snow showers will be possible Christmas night.