National Weather Service
North Central River Forecast Center  Twin Cities/Chanhassen MN
330 PM CST Tue Mar 12 2013

...Mississippi River and Illinois River Ice Statement...

                Ice cover conditions as of 03/12/13
Mississippi River
  Ice depths varied considerably...with the thickest amounts...
other than what is in Lake Pepin....being reported in the pools 
of Dams 8 through 11. Ice depths in this stretch ranged from 
8 to 13 inches. Lake Pepin ice measurements taken back on March 6
averaged 22 inches.
  Elsewhere on the mainstem Mississippi...the reports seem to
indicate that much of the ice previously in place has diminished 
or moved out. But now....broken-up chunks of ice from tributaries
in Iowa and northern Illinois may be moving into the mainstem
as runoff waters push things downstream. 
Illinois River System (Chicago/Illinois R)
  No ice was reported on the Illinois river.
Data source: US Army Corps of Engineers Lock Status Report at
Current conditions as of 03/12/13:
See the comments above for details. 

Outlook for next 7 days:
Temperatures are expected to run 5 to 10 degrees below normal
overall...with just a short break or warmup occurring this
Thursday into Friday. The good news that we can say is that
even though we are looking at below normal temperatures we are
getting close enough to spring that these cooler temps should
not be strong enough to produce any new ice of significance.
But what may happen over the next few days is that the ice
moving in from the tribs may cause jams and subsequent buildups
in some locations...especially in the stretch from far southern
Minnesota down into most of Iowa. 

The next Ice Statement will be released on Tuesday..Mar 19 2013.




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