Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 251725
HMDMSR

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1225 PM CDT Thu Aug 25 2016

...Precipitation...

Yesterday morning showers and thunderstorms continued across the
eastern half of Wisconsin to the northern half of Illinois and
moved to northern Illinois and upper to lower Michigan by the
afternoon.  Meanwhile the next area of storms developed in the
evening and overnight in Iowa and northern Missouri... moving
across northern Illinois and southern Wisconsin to the south half
of lower Michigan by early this morning.

Rainfall totals since yesterday morning were 1.0 to 2.5 inches
with scattered thunderstorms in the southeast half of Iowa, the
northwest half of Missouri, in the north half of Illinois to the
southeast corner of Wisconsin and northern Indiana.  Scattered
areas of southern lower Michigan and eastern upper Michigan had 1
to 2 inches of rain.  Elsewhere scattered showers produced a
quarter inch of less of rain mainly across Wisconsin and to upper
Michigan and North Dakota.

In the forecast...scattered showers and thunderstorms will
continue to develop mainly along front across central Missouri to
southern Iowa, across central Illinois to northern Illinois and
northern Indiana to southern lower Michigan.  Rainfall totals
should average around a half inch or less with locally higher
amounts from storms developing along passing shortwaves today and
tonight.

...Hydrologic Conditions...

The rainfall during the past 24 hours is causing some gages in the
Kankakee and Sangamon River Basins to rise again.  Many of these
sites were already around flood stage and will stay there a little
longer now.

A large portion of the NCRFC Service Area has very wet soil
conditions for this time of year including southern Minnesota,
Wisconsin, Iowa, Illinois, and northeastern Missouri.  This is
also demonstrated by the USGS Daily Streamflow Conditions map
which shows flows at river gages in these areas generally at the
76th percentile or higher.

The forecast precipitation for the next few days is expected
over some of these wet areas in Wisconsin, Iowa, Illinois, and
Missouri.  If the rainfall forecast verifies we may see some minor
flooding or worse if rainfall amounts are higher than expected.

For additional and more in-depth information concerning river
forecasts, precipitation and all hydrometeorological information
in the NCRFC area of responsibility, please refer to the NCRFC
web page at:     http://www.weather.gov/ncrfc

Emergency Call Back List: NCRFC will be staffed 24 hours.


$$

...rhr/bac...





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