Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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HMDMSR

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
127 PM CDT Sun Jul 23 2017

...Precipitation...

Scattered showers and thunderstorms continued yesterday morning
across Missouri to central and southern Illinois. And farther
north, late afternoon showers and thunderstorms developed in
northeast Minnesota and across Wisconsin. Then last night through
early this morning scattered showers and thunderstorms developed
in eastern Wisconsin to Upper Michigan through lower Michigan
and across Missouri to Illinois.

Rainfall totals around 1 to 2 inches were mainly across central
Missouri to central and southern Illinois, and in northeast
Wisconsin.  Otherwise most showers averaged around a quarter to
half inch.

In the forecast... scattered showers and thunderstorms will
continue across southern Missouri to Illinois and along eastern
Wisconsin to northern Indiana and lower to upper Michigan.
Rainfall totals are expected to average around a half to one inch
in northern lower Michigan and eastern upper Michigan, and
around a quarter inch or less in western upper Michigan, along
eastern Wisconsin to northern Illinois and northern Indiana and
southern to central lower Michigan.

...Hydrologic Conditions...

Significant flooding continues in southern Wisconsin, northern
Illinois and eastern Iowa from multiple rounds of heavy rain over
the last week and a half.  Affected rivers above moderate flood
stage include: Des Plaines, Fox (Illinois), Rock (and its
tributaries: Pecatonica, Sugar and Kishwaukee), Wapsipinicon,
Turkey, Baraboo, Kickapoo, and Trempealeau.  The Trempealeau,
Kickapoo and Des Plaines Rivers are now in recession and will fall
below moderate stages in the next day or two.  The Rock River will
crest at near record levels on the lower end at Joslin and Moline.

The recent additional rounds of rain are adding to the expected
rise on the Mississippi downstream of Dubuque.   The Mississippi
is now likely to see moderate flooding at Rock Island through
Burlington Iowa, and minor flooding down to Lock and Dam 25 near
Winfield Missouri.

With only light rain showers in the forecast for today and
tomorrow, we don`t expect to see additional flooding in the area
in the next few days.

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

NCRFC will be staffed 24 hours until further notice.

$$

...rhr/jmp...





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