Inland Waterway Weather Report

Weather Highlights: 

• Upper Mississippi/Red/Souris: Frontal passage will bring a Marginal Risk (Level 1/4) for excessive rainfall to much of Minnesota today. Afterwards, high pressure will offer a temporary drier period, but rain chances will gradually increase starting Weds, leading to a Slight Risk (Level 2/4) for excessive rainfall for southern Minnesota Thurs-Fri as well as a Marginal Risk (Level 1/4) for excessive rainfall from the Dakotas to the Great Lakes on Fri.
• Middle Mississippi Valley: Consecutive low pressure systems will maintain higher precip chances over Iowa and northern Illinois throughout the week. Central Iowa will see a Moderate Risk (Level 3/4) of excessive rainfall and a Slight Risk (Level 2/5) of severe storms today. The rest of Iowa and parts of northern Illinois/Missouri will see a Slight Risk (Level 2/4) of excessive rainfall today, tomorrow, and Weds.
• Lower Mississippi Valley: Although a few summertime thunderstorms may develop in the afternoon today, high pressure over the Gulf of America will maintain hot weather and relatively low precip chances across much of the southern Mississippi Valley, with precip chances minimizing from Tues onwards. An approaching disturbance may increase rain chances along the Gulf for the latter half of the week.

7-day QPF Totals

• Upper Mississippi/Red/Souris: 0.25” to 7.00” of liquid precipitation.
• Middle Mississippi/Lower Ohio Valley: 0.01” to 3.00” of liquid precipitation.
• Lower Mississippi Valley: 0.01” to 1.75” of liquid precipitation.

Howard Holzer – MVD/National Weather Service Meteorologist