Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 301802
HMDMSR

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
102 PM CDT Sun Apr 30 2017

...Precipitation...

Over the last two days, heavy rain has fallen in the southern
third of the NCRFC area.  Southern basins in the headwaters of the
Meramec River in Missouri have seen the most - with upwards of
seven inches in two days.  Totals in the St. Louis area exceeded
five inches.  A broad area including most of Illinois and Missouri
and parts of Iowa, Indiana, and Michigan saw at least an inch of
rain with up to four inches in the Illinois River Valley.

In the next 24 hours, rain is finally moving out of Missouri, but
not before leaving behind up to another inch.  Rain will intensify
in Illinois, especially in the northeast and across central
southern Michigan where up to two inches could fall.  North and
west of this main system, a lobe of an inch to nearly two inches
will move into Minnesota, with the northern edge of that possibly
falling as snow.  On Monday, areas around Lake Superior will see
up to three quarters of an inch of precip.  Tuesday will be
relatively dry, and Wednesday may bring another lighter round of
showers to our southern basins.

...Hydrologic Conditions...

In the Hudson Bay Drainage, flooding continues to diminish along the
Souris River from Towner and Bantry downstream to near the Westhope
area.

Further south, widespread heavy rainfall has dropped over 10 inches of
rain over the past few days, resulting in widespread flooding from
Missouri and Illinois, into Indiana and Michigan. Record flooding is
occurring in some locations in the Meramac River Basin, with major
flooding from northeast Missouri into central Illinois. At one point
there were active forecasts for nearly 250 locations across the NCRFC
area. Additional rainfall today is adding to the crests for some
locations, but beyond today river levels should begin to go down in
earnest.

As always, we will continue to monitor the forecast rainfall and
the potential for any forecasts or forecast updates as necessary.

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: LLD... BAC... MAW... JMP

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


$$

...JMP/MAW...





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