River Ice Statement
Issued by NWS North Central River Forecast Center

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FIUS43 KMSR 091744
RVIMSR

NATIONAL WEATHER SERVICE
NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN
1145 AM CST TUE FEB 9 2016

...MISSISSIPPI RIVER AND ILLINOIS RIVER ICE STATEMENT...

                ICE COVER CONDITIONS AS OF 02/09/2016
*******************************************************************
MISSISSIPPI RIVER

ICE THICKENED AND OR RE-DEVELOPED IN THE NORTH IN THE PAST WEEK.

NO ICE WAS REPORTED AT ST ANTHONY FALLS OR LOCK AND DAM 1.  LD2
AT HASTINGS MN REPORTED 100 PERCENT ICE COVERAGE WITH ICE 14 INCHES
THICK. LD3 REPORTED 50 PERCENT ICE COVERAGE WITH ICE 4 INCHES THICK.
LD4 REPORTED 50 PERCENT COVERAGE WITH A FOOT OF ICE. NO ICE WAS
REPORTED AT LD5. LD6 THROUGH LD13 WERE 80 TO 100 PERCENT ICE COVERED
WITH THICKNESSES OF 5 TO 8 INCHES. LD19 WAS 100 PERCENT ICE COVERED
WITH 2 INCHES OF ICE.  LD20 AND LD 21 WERE 30 TO 40 PERCENT COVERED
WITH 2 TO 3 INCHES OF ICE. NO ICE WAS REPORTED AT LD22 THROUGH LD27
WITH WATER TEMPERATURES OF 33 TO 40 DEGREES.

ILLINOIS RIVER SYSTEM (CHICAGO/ILLINOIS R)

THOMAS J O`BRIEN LOCK REPORTED 20 PERCENT ICE COVERAGE WITH
ICE 2 INCHES THICK. NO ICE WAS REPORTED AT LOCKPORT LOCK...BRANDON
ROAD...DRESDEN ISLAND...MARSEILLES...STARVED ROCK...PEORIA...
OR LA GRANGE...WITH WATER TEMPERATURES OF 36 TO 45 DEGREES.

REPORTS YESTERDAY SHOWED THAT THE TRIBUTARIES TO THE ILLINOIS
WERE MOSTLY ICE FREE. THE ROCK RIVER AT ROSCOE WAS 10 PERCENT
ICE COVERERD WITH ICE BREAKING UP. .

 DATA SOURCE: US ARMY CORPS OF ENGINEERS LOCK STATUS REPORT AT
 HTTP://CORPSLOCKS.USACE.ARMY.MIL/LPWB/F?P=121:4:0:::::
*******************************************************************

CURRENT CONDITIONS AS OF 02/09/16: SEE THE COMMENTS ABOVE FOR
DETAILS.

OUTLOOK FOR NEXT 7 DAYS:

ARCTIC HIGH PRESSURE WILL COVER THE UPPER MIDWEST FOR MOST OF
THE NEXT 7 DAYS....AND AIR TEMPERATURES WILL BE 5 TO 15 DEGREES
BELOW NORMAL THROUGH EARLY NEXT WEEK.  TEMPERATURES WILL MODERATE
AFTER THAT AS THE ARCTIC HIGH MOVES SLOWLY EASTWARD.

IN THE NORTH...TEMPERATURES WILL BE WELL BELOW FREEZING WITH
NIGHTTIME LOWS IN THE SINGLE DIGITS ABOVE AND BELOW ZERO.  IN THE
SOUTH...TEMPERATURES WILL BE MOSTLY BELOW FREEZING WITH NIGHTTIME
LOWS IN THE SINGLE DIGITS AND TEENS ABOVE ZERO.

LOW TEMPERATURES THIS MORNING WERE 4 DEGREES IN ST CLOUD MN...6 IN
THE TWIN CITIES...8 AT LA CROSSE...14 AT ROCK ISLAND...15 DEGREES
AT PEORIA...15 DEGREES AT LD20...AND 21 DEGREES AT ST LOUIS.

STREAMFLOWS ON THE MISSISSIPPI AND ILLINOIS RIVERS REMAIN MUCH
ABOVE NORMAL FOR THIS TIME OF YEAR.

BASED ON THESE FACTORS...ICE SHOULD RE-DEVELOP AND THICKEN THROUGH
NEXT WEEK...POSSIBLY RAPIDLY IN SOME LOCATIONS. THE THREAT OF
FREEZE UP JAMS WILL INCREASE THIS WEEK.

THE NEXT RIVER ICE STATEMENT WILL BE ISSUED ON TUESDAY
FEBRUARY 16 2016.

...BSITES...

$$



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