Marcus’ 4 a.m. Monday forecast
INDIANAPOLIS (WISH) — Heavy downpours will present a flooding risk almost every day this week.
Today: Heavy Rain Arrives, Flooding Possible
An upper level disturbance lifting moving across the state today, combined with an exceptionally muggy atmosphere, will produce scattered to widespread showers and thunderstorms through the day, with coverage and intensity increasing this afternoon. Areas south and west of Indianapolis face the greatest risk of heavy, potentially flooding rainfall today.
The higher flooding risk is across northwestern counties and east-central areas — particularly from Lafayette southwest to the I-74 corridor west — where 2 to 4+ inches of rain has already fallen over the weekend. Those saturated soils have little capacity left, and even modest the lightest amount of rainfall could push streams and low-lying areas over the edge.
Rain continues into tonight before gradually diminishing as the trough pushes into Ohio overnight.
Tuesday: Morning Showers East, Clearing by Afternoon
a few light showers across the eastern portion of the area are possible through Tuesday morning. We should improve significantly by afternoon as the system clears to the east, Temperatures rebound into the upper 80s under clearing skies.
Wednesday: Afternoon Storm Chance
Wednesday brings more of the same sticky, summer-air — warm southwest flow, high humidity, and enough afternoon instability to pop isolated showers and storms through the evening hours.
Thursday and Friday: Strong Storms Possible
The extended forecast continues to highlight late Thursday into Friday as the most significant severe weather and flooding setup of the week.
Thursday will be hot and unstable. Dew points in the upper 60s to low 70s and strong afternoon heating push temperatures into the upper 80s to low 90s, loading the atmosphere with a lot of energy. Isolated to scattered pulse thunderstorms fire easily through in the afternoon hours…