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
1210 PM CST Wed Feb 22 2017

...Precipitation...

Rainfall since yesterday moring was mainly along a front that
extended across southern Missouri, thorugh Illinois to lower
Michigan.  Rainfall averaged around a tenth inch or less in east
central to southern Missouri, central to southern Illinois,
northern Indiana, and over lower Michigan.

Across the northern part of region light scattered snow and rain
fell across upper Michigan, along northern Wisconsin and acorss
Minnesota and the Dakota.  Most totals averaged less than a tenth
inch so far.

In the forecast... precipitation will continue to spread across
the northern part of our region today across North Dakota, the
north half of Minnesota, northern Wisconson and upper Michigan.
Totals by tomorrow morning should avergage a tenth to quarter inch
for most areas.  Then after tomorrow morning showers and possible
thunderstorms will develop across Iowa, southern Minnesota,
southern Wisconsin,  and northern Illinois, where rainfall amounts
should average around a half to one inch by Friday morning.  Much
of lower Michigan should see around a half to three quarters inch
of rain by Friday morning.

...Hydrologic Conditions...

Rain and snowmelt on Monday has generated river rises that are
expected to exceed moderate flood levels in several locations
in southwestern Wisconsin and at Oslo, Minenesota on the Red River
of the North.

Rises above bankfull and minor flood levels are likely this week
and next week in North Dakota, Minnesota, Wisconsin, Iowa, and
the Red River of the North due to the event earlier this week.

The rain-snow storm on tap for Friday could cause additional
rises above bankfull and minor flood levels in Iowa, southern
Wisconsin, northern Illinois, and lower Michigan.  A few locations
in Iowa could rise to near or above moderate flood levels due to
combination of the two weather systems.

The mainstem Mississippi River could rise above minor or moderate
flood levels in early March as all this water works its in from the
tributaries.

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: DCG SAS WES RHR

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


$$

...rhr/wes...





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