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Cristobal to bring heavy rainfall Tuesday

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The remnants of the "Tropical Depression Cristobal" will bring heavy rainfall to SE Minnesota and NE Iowa Tuesday evening and early Wednesday morning. Flash flooding could be a major concern Tuesday evening/overnight.

A "Flash Flood Watch" has been issued by the National Weather Service all of SE Minnesota and NE Iowa. The watch will be in effect from 1 p.m Tuesday until 7 a.m on Wednesday.

Showers and thunderstorms will move into the area late during the late afternoon and early evening on Tuesday. Heavy rain is expected across SE Minnesota and NE Iowa from 4-8 p.m Tuesday. We could be looking at rainfall rates of 1-2 inches per hour causing the threat of flash flooding. Showers and thunderstorms will linger into Wednesday morning and afternoon. A cold front will move across the upper Midwest Wednesday morning causing more showers and thunderstorms to develop.

Widespread 2-4" of rain is possible for areas east of I-35 Tuesday night and Wednesday. I do think there is a threat for some isolated areas reaching 4"+ by Wednesday afternoon. Current guidance has the heaviest rainfall placed between I-35 and the Mississippi River Valley.

We'll have more updates coming!


Nick Jansen

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