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
1135 AM CDT Sun Aug 20 2017

...Precipitation...
Thunderstorms developed last night over northwest Iowa and eastern
Nebraska and traveled southeast affecting the southwest half of
Iowa and northern Missouri. Otherwise most of the NCRFC forecast
area remained dry during the last 24 hours.  The heaviest rainfall
report within the NCRFC area was 1.51 inches at Guthrie Center,
IA.  Otherwise most reports in Iowa were a half inch or less.

During the next 24 hours, a Canadian cold front will continue to
push east, and will stretch from eastern Ontario to eastern Lake
Superior to a low in central Iowa. Showers and thunderstorms along
and ahead of this system will bring widespread rainfall to much of
Michigan...Wisconsin...southern Minnesota...Iowa, Missouri and
northwest Illinois. The heaviest basin average rain of half to one
and a half inches is forecast for Iowa...with half to one inch
amounts expected for upper Michigan.  Locally heavier amounts are
likely and may cause flash flooding.

...Hydrologic Conditions...
There is currently some bankfull rises throughout the Minnesota
River watershed due to heavy rains Wednesday evening.  Otherwise
there is no significant flooding currently occurring within the
NCRFC service area.  There is potential for significant flooding
across parts of Iowa and Illinois with the forecast rainfall
expected Monday into Tuesday.

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: HIC JDT LNE

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

$$

...lne/jdt...




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