Indianapolis, IN – Rapid snowmelt and rising river levels could become a concern across Indiana as unseasonable warmth combines with a corridor of heavier rain before St. Patrick’s Day.
According to NOAA’s 8-14 day outlook issued February 26 and valid March 6-12, there is an 80-90% probability of above normal temperatures stretching from the East Coast into the Ohio Valley and Great Lakes. Indiana sits firmly inside that high-confidence zone, signaling highs that could run well above early March averages statewide.
In Indianapolis, where typical early March highs hover in the mid-40s, afternoon readings could climb significantly higher. Evansville and Fort Wayne are also expected to see milder afternoons and warmer overnight lows, limiting refreezing but accelerating the melt of any lingering snowpack, especially across northern counties.
The precipitation outlook raises a larger concern for northern Indiana. NOAA highlights well above normal chances of heavy precipitation surrounding the Great Lakes, including northern Indiana, Chicago and southern Michigan. That places cities such as South Bend and Gary closer to the axis of repeated rain events during the March 6-12 window.
The combination of elevated temperatures and steady rainfall could push water levels higher along the Wabash, White and St. Joseph rivers. Urban flooding and ponding are possible along major corridors including I-65, I-70 and the Indiana Toll Road during heavier downpours.
This warm, wet pattern is expected to persist through March 12, with additional updates likely as confidence increases heading deeper into early March.
