River Ice Statement
Issued by NWS North Central River Forecast Center

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FIUS43 KMSR 201712
RVIMSR

NATIONAL WEATHER SERVICE
NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN
1115 AM CST TUE JAN 20 2015

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

                ICE COVER CONDITIONS AS OF 01/20/15
*******************************************************************
MISSISSIPPI RIVER

A WARMING TREND SINCE LAST WEEK HAS MELTED SOME ICE AND ICE WAS
BREAKING UP IN SEVERAL LOCATIONS...ESPECIALLY IN THE SOUTH. ICE
AND ICE JAMS WERE STILL COMMON IN MANY OF THE TRIBUTARIES TO
THE MISS.

ICE WAS REPORTED FROM ST ANTHONY FALLS MINNESOTA TO LOCK AND
DAM 26 AT ALTON MISSOURI. ICE COVERAGE WAS GENERALLY 70 TO
100 PERCENT WITH THICKNESSES OF 2 TO 10 INCHES. ICE WAS NOT
REPORTED AT LD1 THRU LD3...LD5...LD7...LD8...LD11...LD14...
LD15...LD21...OR LD22

WATER TEMPERATURES WERE 31 TO 34 DEGREES FROM MINNEAPOLIS TO LOCK
AND DAM 25...AND 37 DEGREES AT LD26 (MEL PRICE).  .

ILLINOIS RIVER SYSTEM (CHICAGO/ILLINOIS R)

ICE COVERAGE WAS 100 PERCENT AT THOMAS J OBRIEN LOCK WITH ICE 8
INCHES THICK. MARSEILLES LOCK AND DAM WAS 70 PERCENT ICE COVERED
WITH ICE 3 INCHES THICK AND BREAKING UP. LAGRANGE REPORTED 30
PERCENT COVERAGE WITH ICE 3 INCHES THICK AND BREAKING UP. NO ICE
WAS REPORTED AT LOCKPORT LOCK...BRANDON ROAD LD...DRESDEN ISLAND
...STARVED ROCK..OR PEORIA. WATER TEMPERAURES RANGED FROM
32 AT PEORIA AND LAGRANGE TO 46 DEGREES AT LOCKPORT.

ICE COVERAGE ON RIVERS IN ILLINOIS RANGED FROM 40 TO 100 PERCENT
AND WAS BREAKING UP IN SEVERAL LOCATIONS. THESE RIVERS INCLUDED...
DU PAGE...FOX...IROQUOIS...KANKAKEE...AND THE ROCK.  THE DATA
SOURCE FOR THESE REPORTS WAS AT WWW.WEATHER.GOV/LOT UNDER
RIVERS AND LAKES.

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 01/20/15:
SEE THE COMMENTS ABOVE FOR DETAILS.

OUTLOOK FOR NEXT 7 DAYS:

AIR TEMPERATURES HAVE BEEN 5 TO 15 DEGREES ABOVE NORMAL SINCE LATE
LAST WEEK. THIS TREND SHOULD CONTINUE THROUGH NEXT WEEK.  IN
GENERAL...WE SHOULD SEE HIGH AIR TEMPERATURES RANGING FROM THE 20S
IN THE NORTH TO THE UPPER 30S AND 40S DOWN TOWARD ST LOUIS.  LOW
TEMPERATURES SHOULD GENERALLY BE IN THE TEENS AND 20S IN THE NORTH
AND UPPER 20S AND 30S IN THE SOUTH.

STREAMFLOWS ARE NEAR NORMAL TO MUCH ABOVE NORMAL DUE TO RAIN AND
SNOW MELT IN DECEMBER.

ONLY LIGHT PRECIPITATION IS EXPECTED OVER THE MIDWEST FOR THE NEXT
7 DAYS.

IN OUR REGION...LOW TEMPERATURES THIS MORNING WERE 27 DEGREES IN
ST CLOUD MN...30 IN THE TWIN CITIES...32 AT LA CROSSE...30 DEGREES
AT ROCK ISLAND...AND 30 DEGREES AT ST LOUIS.

BASED ON THESE FACTORS...THERE SHOULD BE LITTLE CHANGE IN THE ICE
IN THE NORTH WHILE SOME ICE SHOULD CONTINUE TO MELT AND BREAK UP
IN THE SOUTH. THE THREAT OF ICE JAMS WILL CONTINUE THROUGH NEXT
WEEK...ESPECIALLY IF A SIGNIFICANT AMOUNT OF SNOW MELTS TO FURTHER
INCREASE STREAMFLOWS.

THE NEXT ICE STATEMENT WILL BE RELEASED ON TUESDAY..JAN 27 2015.

...BSITES...

$$



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