Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 141753
HMDMSR

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1153 AM CST Thu Dec 14 2017

...Precipitation...
The last 24 hours saw more widespread precipitation across the
northern reaches of the RFC.  There was an especially heavy band
of precipitation that ran through northeastern Wisconsin through
Central Mighigan and produced totals as high as 0.7 inches, which
came in the form of 5-8 inches of snow.North and south of this
band totals were closer to 0.2-0.3 inches of precip and 0.01-0.05
inches as distance from the central band increases.

The next 24 hours will see more of the same weather patterns.
Ligth precip in northeastern WI and heavier precipitation, with
totals as high as 0.3 inches, along the downwind lake shores of
Michigan.


...Hydrologic Conditions...
No flooding is expected anytime soon in the NCRFC area but the
threat of ice jam flooding is always a concern. Currently
the Menominee at Pembine is experiencing what appears to be
a significant ice jam due to the cold temperatures and high
flow for this time of year. It seems to have stabilized and
is dropping with no known impacts

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


Emergency Call Back List: (in order MAW ... JMP ... RHR)

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


$$

...ANM/SAS...





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