Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 211553
HMDMSR

Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1053 AM CDT Thu Sep 21 2017

...Precipitation...

A cold front stretched from Sault Ste. Marie to southwestern Iowa
this morning. The frontal system will shift north again as a warm
front today and tonight.  A new frontal system will sweep across
the Dakotas tonight and enter northwestern Minnesota by tomorrow
morning. This front should be on a line from the Minnesota
Arrowhead to northeastern Nebraska by Saturday morning, then
probably stall out in this position through Monday morning.

In the past 24 hours... heavy rain fell over southeastern Iowa and
nearby Illinois with totals ranging from 1.5 inches to 6.5
inches. Heavy rain also fell over eastern Wisconsin with totals
of 1 to 4 inches.

In the next 24 hours...a little more rain could fall over
southeastern Iowa before that system fizzles out. The new front
could bring an inch of rain to west-central Minnesota with
lighter amounts across the remainder of the northern tier.

Over the next 5 days, a stripe of 3 to 5 inches of rain could fall
from central Nebraska to northeastern Minnesota.

...Hydrologic Conditions...

Heavy rain fell again overnight, but this time over southeast
Iowa. Once again, despite over 6 inches in some spots, it fell on
areas that were quite dry, and the resulting river rises will not
be too significant.

The frontal system that is moving into the area from Minnesota
down into Nebraska by Saturday looks like it will stall out in the
same general area into next week. Periodic rainfall near this
boundary looks like it could bring repeated rains off and on for
several days over the same general areas.  If this rain becomes
too heavy and impacts the same drainages, we could have some
flooding concerns. We will continue to monitor the situation.

Elsewhere across the NCRFC area, the general hydrologic situation
remains quiet, given the abnormally dry conditions.

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 DCG WES LNE)

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


$$

...bsites/maw...





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