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
1140 AM CST Mon Dec 11 2017

...Precipitation...
The last 24 hours saw another round of broadly spread
precipitation covered Wisconsin, Michigan, north eastern Minnesota
and even extended into northern Indiana and Illinois.  Precip
totals were mostly less than 0.25 inches. While the heaviest amounts
were seen along the Lake shores in Michigan, the totals were not
as heavy as in the last fews days and stayed below 0.25 inches.

The forecast calls for a repeat of this weather pattern. We`ll see
light precipitation over most of the RFC areas with some heavier
accumulation on Michigan shores down wind of the Great Lakes.


...Hydrologic Conditions...
No flooding is expected anytime soon in the NCRFC area but the
threat of ice jam flooding is always a concern.

Due to open water freezing in the northern part of the NCRFC
a dip of reduced flow is working its way down the main stem
Mississippi. This is the first of a series of "ice bite"
events expected. Water temperatures are around the freezing
mark down to L & D 13 but much open water still exists.

The temperature outlook shows some potential for another deep
freeze around Christmas which would freeze up rivers for the
middle portion of the NCRFC creating a second ice bite event.

Navigation on the Mississippi at St. Louis can be greatly
impacted from sharp flow loss or critically low stages.

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


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: (in order MAW ...SAS ... ANM)

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


$$

...amangham/SAS...





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