Strong to severe thunderstorms are possible Tuesday across the Mississippi Valley and Southern Plains. Moderate to heavy snow and light icing will be possible for the Northern Plains and Northern Great Lakes.

Mississippi Valley/Southern Plains: As the front begins to advance through the Plains on Tuesday, additional showers and thunderstorms are anticipated to develop during the afternoon hours across much of the Mississippi Valley and into the Southern Plains. Locally heavy rainfall, damaging wind gusts and hail could occur where instability is highest and vertical wind profiles favor rotating thunderstorms.

Northern Plains/Northern Great Lakes: Further north, a secondary frontal boundary will progress into the Northern Plains and Northern Great Lakes. Surface temperatures are anticipated to cool enough to favor moderate snow and light ice across the region Tuesday and into Wednesday. Accumulations overnight should remain under 4 inches of snow and under .25 of an inch in ice. However, with elevated surface winds in excess of 10-20 knots, falling snow will reduce visibility and may impact travel conditions.