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National Weather Service
North Central River Forecast Center Twin Cities/Chanhassen MN
355 PM CST Tue Mar 24 2009
...Mississippi River and Illinois River Ice Statement...
Ice cover conditions 03/24/09
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Mississippi River Locks and Dams
Water Upstream
L&D Temp. Cover Depth Extent Remarks
Pool (F) (%) (in) (mi)
-------------------------------------------------------------------
USAF 34 --- -- --
LSAF 34 --- -- --
1 38 --- -- --
2 -- --- -- --
3 42 --- -- --
The first towboat of the season worked it's way
through Lake Pepin early on March 23 and
reported back that there was still 10 inches
of solid ice between mile markers 765 to 770...
but less than 6 inches or even open elsewhere.
4 43 --- -- --
5 41 --- -- --
5A 41 --- -- --
6 42 --- -- --
7 42 --- -- --
8 44 --- -- --
9 45 --- -- --
10 45 --- -- --
11 44 --- -- --
12 44 --- -- --
13 47 --- -- --
14 49 --- -- --
15 48 --- -- --
16 49 --- -- --
17 -- --- -- --
18 47 --- -- --
19 48 --- -- --
20 -- --- -- --
21 50 --- -- --
22 -- --- -- --
24 46 --- -- --
25 49 --- -- --
Mel Pr 56 --- -- --
27 -- --- -- --
Illinois River System (Chicago/Illinois R)
Water Upstream
L&D Temp. Cover Depth Extent Remarks
Pool (F) (%) (in) (mi)
-------------------------------------------------------------------
Chicago 41 --- -- --
O'Brien 43 --- -- --
Lockport 48 --- -- --
Brandon 50 --- -- --
Dresden 50 --- -- --
Marseilles 51 --- -- --
Starved Rock 49 --- -- --
Peoria 50 --- -- --
La Grange -- --- -- --
Data Source: http://www2.mvr.usace.army.mil/nic2/reports/icerpt.0600
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Current conditions as of March 24:
Water temperatures are warming up nicely. The only place left
on the navigable portions of the Mississippi from Minneapolis
southward is at Lake Pepin...and the ice there appears to be
deteriorating and diminishing fairly quickly now.
The first towboat of the season pushed through Lake Pepin
early on March 23..reporting that there was still 10 inches of
solid ice between mile markers 765 to 770. The ice thickness
there should continue to shrink daily.
Outlook for next 7 days:
While nighttime lows may occasionally dip a little below
freezing in some locations over the next few nights through
the weekend....daytime highs will generally be in the 40s and
50s. This...plus the fact that the water temperatures are already
a few degrees above freezing at most locations...means that we do
not expect there to be any more new ice development on the
mainstem Mississippi and Illinois Rivers going from the present
time into the rest of Spring.
Therefore...this will be the last issuance of the weekly
"Mississippi River and Illinois River Ice Statement" product for
this season unless unforeseeable and dramatically different
conditions develop.
We will resume issuing Ice Statements once again next season around
mid to late November depending on weather conditions at that time.
...dam...
$$
NNNN
