Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 241723

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1222 PM CDT Wed May 24 2017

Mostly light rain and drizzle continued to circulate around a
closed low over the lower Ohio Valley.  Areas of light rain fell
over most of the NCRFC forecast area except for North Dakota and
northwest Minnesota.  The heaviest rain fell along the west shore
of Lake Michigan from Green Bay, WI to the southern Chicago, IL
suburbs, and around Camp Douglas, WI, where amounts ranged from
half to one and three quarters inches.  Half to one and a quarter
inches of rain also fell over northern lower Michigan.  Otherwise
most reports were less than a tenth of an inch.

The occluded low pressure system over southern Indiana this
morning will wobble northeastward to northwest Ohio by Thursday
morning and then should eject northeast to the New England region
by Friday. During the next 24 hours...rain is forecast to the
right of a line from Kirksville, MO to Iron Mountain, MI to Sault
Ste. Marie, MI, where the heaviest rain of half to three quarters
of an inch is forecast for southeast lower Michigan.  Light rain
is also forecast to move into North Dakota.

...Hydrologic Conditions...
Significant flooding continues on the lower Illinois River due to
multiple rounds of heavy rain over the last few weeks.

Heavy rainfall from the latest system has also contributed to some
minor flooding and bankfull rises across much of the rest of the
Upper Mississippi and Great Lakes drainages.

As tributary inflows from locations that have seen recent moderate
and major flooding work their way in to the mainstem Mississippi,
flooding is occurring or forecast along the entire system, from
Minnesota to Chester, IL, and on to the south of the NCRFC area.
There is a possibility of significant flooding along some portions
of the Mississippi by next week due to routed flows, and prolonged
recessions if any new precipitation impacts the region in the next
2 weeks.

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: RHR ALH JMP LNE

If no response from this list, call the DOH, SCH or HIC.



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