Very heavy rains produce flash flooding

Rainfall totals exceeded 4 inches across southern sections of the Twin Cities metro overnight and early this morning. Some of the heaviest totals were from Eden Prairie to Burnsville.

The greatest accumulation of rain (6.69 inches) was reported three miles south of Crystal Bay in Scott County, south of the Twin Cities.

Flash flooding created havoc from the Twin Cities to the Iowa border, with the heaviest rain producing flash flooding from the south metro through Northfield and west of Albert Lea.

More showers and thunderstorms were already developing in southwest Minnesota this morning.

I suggest you keep a close watch on the Doppler radar throughout the afternoon and tonight.  More heavy rains are possible as a warm front sets up through central Minnesota.

Doppler estimated rainfall through 1012 a.m. CDT. Source:Wunderground.com

The graphic above paints a vivid image of where heavy rains and flash flooding occurred.

Rainfall reports from the Chanhassen NWS Office can be found here.

 

  • John Reinert Nash

    Do you have any insight as to why the NWS overnight forecast missed the mark on this storm system’s impact on the Twin Cities? The models had the line of storms weakening as they moved to the southeast, but instead, it looks as though some unorganized moisture joined the line as it passed St Cloud and Willmar around midnight. NAM and GFS both had no more than an inch forecast, so the NWS prediction made sense, but what happened to make this rain event such a surprise to the models, forecasters, and public?