Severe Thunderstorms Possible in the South Central U.S.; Wildfire Smoke Impacts in the North Central U.S.; Severe Space Weather

Scattered severe thunderstorms may bring large hail and isolated damaging winds this weekend over parts of the south central U.S. Smoke from Canadian wildfires will bring air quality issues to parts of the north central U.S. this weekend. Moderate to Severe geomagnetic storm conditions will remain possible into early Monday following a strong coronal mass ejection from the sun. Read More >

Updated: 1215 PM CDT Sept 21, 2016

Overview

Multiple rounds of heavy rain can be expected through Thursday. Several inches are likely which could result in flash flooding and significant rises on rivers and lakes. The heaviest rainfall amounts are likely to fall across east central/southeast Minnesota into west central/southwest Wisconsin.

There is also a chance for severe weather this afternoon and evening. As thunderstorms develop, they will be capable of producing large hail, damaging winds, and tornadoes.

Stay weather aware this week and monitor later forecasts closely.

Flood Safety Information

Video web briefing

Key Points

Potential Impacts: Flooded roads, rising rivers, urban flash flooding.
Timing: through Thursday.
Amounts: Widespread 2 to 4 inches, locally 6+ inches - especially in the Moderate Risk area for flash flooding shown below.
Forecast Confidence: High for potential impacts, location, and timing. Moderate for flood risk and rain amounts.

Rainfall Forecasts
Note: maps indicate an areal average. Locally higher and lower totals should be expected.
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Day 1	Day 2	Day 3

Day 4-5	Day 6-7	Day 1-7 Total

Excessive Rainfall Outlooks
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Day 1	Day 2	Day 3

Today's Severe Weather Outlook
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Severe Weather Risk	Tornado Risk	Damaging Wind Risk	Large Hail Risk

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Severe Thunderstorms Possible in the South Central U.S.; Wildfire Smoke Impacts in the North Central U.S.; Severe Space Weather

Periods of Heavy Rainfall Will Bring Flood Risk Through Thursday