Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1213 PM CDT Thu May 25 2017

...Precipitation...
Locally heavy rain fell over far northeast Indiana where reports
between one and a half and two and a quarter inches were received.
Widespread quarter to half inch reports were common across the
rest of northern Indiana and the southeast half of lower Michigan.
Widespread light rain of less than a tenth of an inch fell over
the rest of Michigan, eastern Wisconsin, the Chicago metro area
and the western half of North Dakota.  Scattered light rain fell
over portions of Iowa, Missouri and the rest of Illinois where
amounts were once again mostly less than a tenth of an inch.

During the next 24 hours...light rain of less than a quarter inch
is forecast for eastern lower Michigan, northern North Dakota and
northern Minnesota. For the long Memorial Day weekend, most of the
NCRFC area will see scattered light rain.  The best chance for
significant ran will be south of a Kansas City, MO to Chicago, IL
to Findlay, OH line.

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

There is a high likelihood of significant (moderate) flooding
along the Illinois-Iowa border portion of the Mississippi River.
This begins Saturday at Dubuque, IA, and continues through the
coming weeks as the flood wave travels downstream.

The aforementioned mainstem flooding is the result of a wet
several weeks in the area.  Many rivers have seen minor flooding
and bankfull rises across much of the Upper Mississippi and Great
Lakes drainages.  Smaller tributaries and headwaters rivers have
generally crested, but many locations are still seeing secondary
rises, long duration crests and extended recessions.

As the elevated tributary inflows work their way into 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.


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 SAS LNE

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

$$

...lne/jmp...




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