Flood Potential Outlook
Issued by NWS Chicago, IL

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FGUS73 KLOT 192208
ESFLOT
ILC007-011-031-037-063-075-089-091-093-097-099-103-105-111-
141-197-201-INC073-089-111-127-201800-

PROBABILISTIC HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 PM CST THU FEB 19 2015

...2015 SPRING FLOOD AND WATER RESOURCES OUTLOOK NUMBER 1...

THIS OUTLOOK IS FOR STREAMS WITHIN THE NATIONAL WEATHER SERVICE
CHICAGO HYDROLOGIC SERVICE AREA...WHICH INCLUDES ILLINOIS RIVER
TRIBUTARIES IN NORTHEAST ILLINOIS AND NORTHWEST INDIANA. IT INCLUDES
THE ILLINOIS RIVER DOWN TO LA SALLE. IT ALSO INCLUDES STREAMS WITHIN
THE ROCK RIVER BASIN IN NORTH CENTRAL ILLINOIS AND THE ROCK RIVER
FROM ROCKTON DOWN TO DIXON ILLINOIS. THIS OUTLOOK IS FOR THE TIME
PERIOD FROM LATE FEBRUARY THROUGH LATE MAY.

...OUTLOOK BRIEF SUMMARY...
BASED ON CURRENT CONDITIONS...THE RISK OF FLOODING THIS SPRING
RANGES FROM NEAR NORMAL TO SLIGHTLY ABOVE NORMAL. A SLIGHTLY
ELEVATED RISK OF FLOODING EXISTS WITHIN THE KANKAKEE
AND IROQUOIS RIVER BASINS. IN ADDITION...THERE IS AN ABOVE NORMAL
RISK FOR MINOR FLOODING ALONG THE UPPER ILLINOIS RIVER

ICE JAMS AND ICE JAM FLOODING REMAIN POSSIBLE. ICE JAMS CAN RESULT
IN RAPID RISES IN WATER LEVELS IN A VERY SHORT TIME.

THE AMOUNT OF RAINFALL OR ADDITIONAL SNOW AND SUBSEQUENT SNOWMELT
IN THE COMING WEEKS WILL DETERMINE THE SEVERITY OF ANY FUTURE
FLOODING.

THIS SPRING OUTLOOK IS BASED ON HYDROLOGIC CONDITIONS INCLUDING THE
CURRENT SOIL MOISTURE...SNOWPACK...AND STREAMFLOW CONDITIONS AT THE
TIME OF ISSUANCE. IT SHOULD BE NOTED THAT HYDROLOGIC CONDITIONS CAN
CHANGE RAPIDLY DURING LATE WINTER AND EARLY SPRING. THESE OUTLOOKS
ARE ISSUED EACH LATE WINTER AND EARLY SPRING IN ADDITION TO THE 7
DAY RIVER FORECASTS THAT ARE ISSUED WHEN RIVER FORECAST LOCATIONS
ARE IN FLOOD OR ARE FORECAST TO RISE ABOVE FLOOD STAGE.

...CURRENT SNOW COVER AND WATER EQUIVALENT...
AS OF FEBRUARY 19TH...SNOW DEPTHS CURRENTLY RANGE FROM 2 TO 8
INCHES. THE AREA OF THE DEEPEST SNOWPACK WAS GENERALLY BETWEEN
I-80 AND I-90. WATER CONTENT OF THE EXISTING SNOWPACK RANGES
BETWEEN 0.5 AND 1.5 INCHES.

...PAST TEMPERATURE...PRECIPITATION...AND SOIL CONDITIONS...
FALL OF 2014 CONCLUDED WITH TEMPERATURES BELOW NORMAL.
PRECIPITATION THIS PAST FALL OVER MOST OF NORTHEAST AND NORTH
CENTRAL ILLINOIS WAS BELOW NORMAL. HOWEVER..SOME AREAS IN EAST
CENTRAL ILLINOIS AND NORTHWEST INDIANA WITHIN THE KANKAKEE RIVER
BASIN EXPERIENCED SLIGHTLY ABOVE NORMAL PRECIPITATION. DECEMBER
2014 SAW ABOVE NORMAL TEMPERATURES AND CONTINUED BELOW NORMAL
PRECIPITATION. THE MONTH OF JANUARY EXPERIENCED BELOW NORMAL
TEMPERATURES AND NEAR NORMAL PRECIPITATION. SINCE
FEBRUARY...TEMPERATURES HAVE BEEN BELOW NORMAL WITH PRECIPITATION
IN THE FORM OF SNOWFALL AVERAGING WELL ABOVE NORMAL.

...SOIL MOISTURE AND FROST DEPTH...
DUE TO THE RELATIVELY DRY FALL...DEEP SOIL MOISTURE IS BELOW NORMAL.
RECENT SNOWMELT HAS RESULTED IN ABOVE NORMAL MOISTURE IN THE TOP
SOIL PROFILE...ESPECIALLY WITHIN PORTIONS OF THE KANKAKEE RIVER
BASIN. HOWEVER...FROST HAS PREVENTED ANY DEEP SOIL MOISTURE RECHARGE
TO DATE. FROST DEPTHS HAVE INCREASED OVER THE LAST WEEK AND
CURRENTLY RANGE FROM 8 TO 14 INCHES.

...RIVER CONDITIONS...
STREAMFLOW ON AREA RIVERS RANGED FROM BELOW TO NEAR NORMAL. WITH
RECENT SUBZERO TEMPERATURES...ICE COVER HAS INCREASED ON AREA
STREAMS. NWS CHICAGO RIVER ICE SPOTTERS REPORTED THAT MOST RIVER
LOCATIONS HAVE SOME ICE COVER WITH MANY LOCATIONS REPORTING 100
PERCENT COVERAGE. ICE JAMS AND ICE JAM FLOODING REMAIN POSSIBLE.

...WEATHER OUTLOOKS...
THE SIX TO 10 DAY OUTLOOK VALID FROM FEBRUARY 24 TO FEBRUARY 28
INDICATES BELOW NORMAL TEMPERATURES AND PRECIPITATION. THE OUTLOOK
FOR MARCH INDICATES EQUAL CHANCES FOR ABOVE OR BELOW NORMAL
PRECIPITATION AND SLIGHTLY BELOW NORMAL TEMPERATURE.

...FLOOD POTENTIAL SUMMARY...
BASED ON CURRENT CONDITIONS...THE RISK OF FLOODING THIS SPRING
RANGES FROM NEAR NORMAL TO SLIGHTLY ABOVE NORMAL. A SLIGHTLY
ELEVATED RISK OF FLOODING EXISTS WITHIN THE KANKAKEE
AND IROQUOIS RIVER BASINS. IN ADDITION...THERE IS AN ABOVE NORMAL
RISK FOR MINOR FLOODING ALONG THE UPPER ILLINOIS RIVER

ICE JAMS AND ICE JAM FLOODING REMAIN POSSIBLE. ICE JAMS CAN RESULT
IN RAPID RISES IN WATER LEVELS IN A VERY SHORT TIME.

THE AMOUNT OF RAINFALL OR ADDITIONAL SNOW AND SUBSEQUENT SNOWMELT
IN THE COMING WEEKS WILL DETERMINE THE SEVERITY OF ANY FUTURE
FLOODING.

IN TABLE 1 BELOW...THE CURRENT (CS) AND HISTORICAL (HS) OR NORMAL
PROBABILITIES OF EXCEEDING MINOR...MODERATE...AND MAJOR FLOOD STAGES
ARE LISTED FOR THE VALID TIME PERIOD.

CS VALUES INDICATE THE PROBABILITY OF REACHING A FLOOD CATEGORY
BASED ON CURRENT CONDITIONS.

HS VALUES INDICATE THE PROBABILITY OF REACHING A FLOOD CATEGORY
BASED ON HISTORICAL OR NORMAL CONDITIONS.

WHEN THE VALUE OF CS IS MORE THAN HS...THE PROBABILITY OF
EXCEEDING THAT LEVEL IS HIGHER THAN NORMAL. WHEN THE VALUE OF CS IS
LESS THAN HS...THE PROBABILITY OF EXCEEDING THAT LEVEL IS LOWER
THAN NORMAL.


...TABLE 1--PROBABILITIES FOR MINOR...MODERATE AND MAJOR FLOODING...
                    VALID PERIOD:  2/23/2015 - 5/24/2015

                                       :    CURRENT AND HISTORICAL
                                       :     CHANCES OF EXCEEDING
                                       :       FLOOD CATEGORIES
                                       :      AS A PERCENTAGE (%)
                      CATEGORICAL      :
                   FLOOD STAGES (FT)   :   MINOR    MODERATE   MAJOR
LOCATION           MINOR   MOD   MAJOR :  CS   HS   CS   HS   CS   HS
--------           -----  -----  ----- : ---  ---  ---  ---  ---  ---
:HART DITCH
DYER                12.0   13.0   14.0 :  <5   <5   <5   <5   <5   <5
:THORN CREEK
THORNTON            10.0   15.0   16.0 :  10    6   <5   <5   <5   <5
:LITTLE CALUMET RIVER
MUNSTER             12.0   14.0   17.0 :  50   33   21   15   <5   <5
SOUTH HOLLAND       16.5   18.0   20.0 :  <5   <5   <5   <5   <5   <5
:KANKAKEE RIVER
DUNNS BRIDGE        10.0   12.0   13.0 :  83   31   18    6    6   <5
KOUTS               11.0   13.0   14.0 :  89   34   20    6    6   <5
SHELBY               9.0   11.0   12.5 : >95   84   80   41   30   17
MOMENCE              5.0    6.5    9.0 :  49   30   15   14    6   <5
:IROQUOIS RIVER
RENSSELAER          12.0   14.0   15.0 :  32   38   10   11    7    9
FORESMAN            18.0   22.0   24.0 :  26   22   <5   <5   <5   <5
IROQUOIS            18.0   24.0   25.0 :  69   65    7    7   <5   <5
:SUGAR CREEK
MILFORD             18.0   22.0   26.0 :  60   60   12   14   <5   <5
:IROQUOIS RIVER
CHEBANSE            16.0   18.0   20.0 :  21   14    7    9    6   <5
:KANKAKEE RIVER
WILMINGTON           6.5    8.0   10.0 :  21   20   12   11   <5   <5
:DES PLAINES RIVER
RUSSELL              7.0    9.0   10.0 :  69   64   <5    6   <5   <5
GURNEE               7.0    9.0   11.0 :  38   33    6    6   <5   <5
LINCOLNSHIRE        12.5   14.0   15.5 :  29   29    7    9   <5    6
DES PLAINES         15.0   18.0   19.0 :  21   20   <5    6   <5   <5
RIVERSIDE            7.0    8.0    9.0 :  30   24   10   12    6   <5
LEMONT              10.0   11.0   12.0 :  61   43   27   21    9   10
:W BR DU PAGE RIVER
WARRENVILLE         11.5   14.5   17.5 :  35   30   <5   <5   <5   <5
:EAST BRANCH DU PAGE RIVER
BOLINGBROOK         19.5   21.0   23.0 :  73   47   21   10   <5   <5
:DU PAGE RIVER
SHOREWOOD            6.5    8.0   10.0 :  20   12   <5   <5   <5   <5
:MAZON RIVER
COAL CITY           12.0   14.0   17.0 :  18   15    6   <5   <5   <5
:FOX RIVER
ALGONQUIN TAILWAT    9.5   10.5   12.0 :  55   64   32   36   10   16
MONTGOMERY          13.0   14.0   15.0 :  50   46    7   10   <5   <5
DAYTON              12.0   14.0   24.0 :  46   41   15   13   <5   <5
:VERMILION RIVER
PONTIAC             14.0   15.0   18.0 :  18   15    9   11    6   <5
LEONORE             16.0   21.0   26.0 :  44   38   16    9   <5   <5
:PECATONICA RIVER
SHIRLAND            12.0   14.0   15.5 :  36   35   18   13   <5    6
:ROCK RIVER
ROCKTON             10.0   11.0   14.0 :  20   26    7   15   <5   <5
LATHAM PARK         10.0   11.0   14.0 :  10   21    6    9   <5   <5
ROCKFORD             9.0   10.0   11.0 :  <5   <5   <5   <5   <5   <5
:KISHWAUKEE RIVER
BELVIDERE            9.0   10.0   12.0 :  18   16   10    9   <5   <5
:SOUTH BRANCH KISHWAUKEE RIVER
DE KALB             10.0   11.0   12.5 :  <5   <5   <5   <5   <5   <5
:KISHWAUKEE RIVER
PERRYVILLE          12.0   18.0   22.0 :  43   36   <5   <5   <5   <5
:ROCK RIVER
BYRON               13.0   14.0   16.0 :  12   13    6   12   <5    9
DIXON               16.0   18.0   20.0 :   6   13   <5    9   <5    6
:NORTH BRANCH CHICAGO RIVER
CHICAGO ALBANY AV    7.0    7.5    8.0 :  <5   <5   <5   <5   <5   <5
:ILLINOIS RIVER
MORRIS              16.0   18.0   22.0 :  47   38   33   24   10    6
OTTAWA             463.0  466.0  469.0 :  40   32   20   18    9   <5
LA SALLE            20.0   27.0   31.0 :  87   67   24   18    6   <5

LEGEND
CS = CONDITIONAL SIMULATION (CURRENT OUTLOOK)
HS = HISTORICAL SIMULATION
FT = FEET

IN TABLE 2 BELOW...THE 95 THROUGH 5 PERCENT COLUMNS INDICATE THE
PROBABILITY OF EXCEEDING THE LISTED STAGE LEVELS (FT) FOR THE VALID
TIME PERIOD.

...TABLE 2--EXCEEDANCE PROBABILITIES...

                               CHANCE OF EXCEEDING STAGES
                                  AT SPECIFIC LOCATIONS
                          VALID PERIOD: 2/23/2015 - 5/24/2015
LOCATION              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:HART DITCH
DYER                  4.3    4.7    5.6    6.2    7.0    8.0    8.5
:THORN CREEK
THORNTON              5.6    6.0    6.8    7.6    8.5   10.1   11.6
:LITTLE CALUMET RIVER
MUNSTER              10.0   10.6   11.1   12.1   13.4   15.4   17.1
SOUTH HOLLAND        11.0   11.5   12.3   13.4   14.0   14.8   15.2
:KANKAKEE RIVER
DUNNS BRIDGE          9.6    9.9   10.4   10.9   11.6   12.6   13.4
KOUTS                10.8   11.0   11.5   12.1   12.7   13.8   14.5
SHELBY               10.3   10.6   11.1   11.8   13.0   14.1   14.4
MOMENCE               3.8    3.9    4.3    5.0    5.9    8.2   10.4
:IROQUOIS RIVER
RENSSELAER            8.3    9.1   10.2   11.6   12.4   14.1   18.5
FORESMAN             12.8   13.3   15.1   16.6   18.0   19.9   22.2
IROQUOIS             14.6   15.4   17.5   20.3   22.4   23.4   25.9
:SUGAR CREEK
MILFORD              12.8   15.4   17.3   18.7   20.4   23.3   25.5
:IROQUOIS RIVER
CHEBANSE              9.3    9.7   11.4   13.2   15.5   17.5   20.9
:KANKAKEE RIVER
WILMINGTON            3.5    3.9    4.5    5.5    6.3    8.6   10.3
:DES PLAINES RIVER
RUSSELL               6.3    6.5    6.9    7.3    7.7    8.0    8.5
GURNEE                4.7    5.0    5.5    6.6    7.6    8.4    9.1
LINCOLNSHIRE          9.4    9.7   10.4   11.4   12.9   14.0   14.4
DES PLAINES          10.7   11.5   12.5   13.5   14.9   16.8   17.6
RIVERSIDE             4.7    5.1    5.8    6.6    7.1    8.1    9.8
LEMONT                8.2    8.8    9.4   10.4   11.1   12.0   13.7
:W BR DU PAGE RIVER
WARRENVILLE          10.1   10.3   10.7   11.3   11.8   12.4   12.7
:EAST BRANCH DU PAGE RIVER
BOLINGBROOK          18.7   18.9   19.5   20.4   20.9   21.5   22.1
:DU PAGE RIVER
SHOREWOOD             4.5    4.8    5.2    5.8    6.2    6.8    7.3
:MAZON RIVER
COAL CITY             6.5    7.2    8.3   10.0   11.7   13.4   14.6
:FOX RIVER
ALGONQUIN TAILWAT     7.8    8.3    8.8    9.8   10.7   12.2   13.4
MONTGOMERY           12.3   12.4   12.6   13.0   13.4   13.8   14.1
DAYTON                9.8   10.0   10.5   11.9   12.9   15.5   16.8
:VERMILION RIVER
PONTIAC               7.0    7.4    8.6   11.0   13.5   15.4   18.3
LEONORE              10.3   11.0   13.2   15.1   19.3   22.4   24.8
:PECATONICA RIVER
SHIRLAND              7.3    7.7    8.9   10.7   13.2   14.9   15.6
:ROCK RIVER
ROCKTON               5.0    5.3    5.9    7.4    9.4   10.7   11.8
LATHAM PARK           5.4    5.6    6.1    7.4    9.1   10.1   11.2
ROCKFORD              3.1    3.1    3.2    3.5    3.9    4.4    5.2
:KISHWAUKEE RIVER
BELVIDERE             5.0    5.4    6.0    7.2    8.9   10.4   11.2
:SOUTH BRANCH KISHWAUKEE RIVER
DE KALB               5.7    6.0    6.6    7.5    8.3    9.0    9.4
:KISHWAUKEE RIVER
PERRYVILLE            9.7   10.1   10.8   11.7   13.3   15.2   16.2
:ROCK RIVER
BYRON                 8.1    8.3    8.9   10.6   11.7   13.5   14.3
DIXON                 9.7   10.0   10.7   12.3   13.9   15.4   19.0
:NORTH BRANCH CHICAGO RIVER
CHICAGO ALBANY AV     3.7    3.9    4.8    5.2    5.7    6.7    6.9
:ILLINOIS RIVER
MORRIS               10.2   11.4   14.4   16.0   19.5   22.1   23.7
OTTAWA              459.5  460.3  461.8  462.3  465.2  469.3  470.6
LA SALLE             18.2   19.5   22.5   23.9   27.2   30.1   32.0

IN TABLE 3 BELOW...THE 95 THROUGH 5 PERCENT COLUMNS INDICATE THE
PROBABILITY OF FALLING BELOW THE LISTED STAGE LEVELS (FT) FOR THE
VALID TIME PERIOD.

...TABLE 3--NONEXCEEDANCE PROBABILITIES...

                            CHANCE OF FALLING BELOW STAGES
                                 AT SPECIFIC LOCATIONS
                          VALID PERIOD: 2/23/2015 - 5/24/2015
LOCATION              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:HART DITCH
DYER                  1.8    1.8    1.8    1.8    1.8    1.8    1.7
:THORN CREEK
THORNTON              2.7    2.7    2.7    2.7    2.7    2.7    2.7
:LITTLE CALUMET RIVER
MUNSTER               4.8    4.8    4.8    4.8    4.8    4.8    4.7
SOUTH HOLLAND         5.2    5.2    5.1    5.1    5.1    5.1    5.1
:KANKAKEE RIVER
DUNNS BRIDGE          4.1    4.1    4.1    4.0    3.9    3.7    3.6
KOUTS                 5.0    5.0    5.0    5.0    4.9    4.7    4.5
SHELBY                5.6    5.6    5.6    5.6    5.5    5.2    5.0
MOMENCE               2.0    2.0    2.0    2.0    1.9    1.8    1.7
:IROQUOIS RIVER
RENSSELAER            4.5    4.4    4.4    4.3    4.0    3.9    3.7
FORESMAN              7.1    7.1    7.0    6.6    6.1    5.9    5.6
IROQUOIS              6.7    6.6    6.5    6.2    5.7    5.5    5.2
:SUGAR CREEK
MILFORD               3.9    3.9    3.8    3.7    3.6    3.4    3.3
:IROQUOIS RIVER
CHEBANSE              4.1    4.1    4.0    3.9    3.6    3.4    3.2
:KANKAKEE RIVER
WILMINGTON            1.6    1.5    1.5    1.5    1.4    1.3    1.3
:DES PLAINES RIVER
RUSSELL               2.7    2.7    2.7    2.6    2.6    2.6    2.6
GURNEE                1.3    1.3    1.3    1.3    1.3    1.2    1.2
LINCOLNSHIRE          6.2    6.2    6.2    6.2    6.2    6.2    6.2
DES PLAINES           7.7    7.6    7.6    7.6    7.6    7.6    7.6
RIVERSIDE             1.7    1.7    1.7    1.7    1.7    1.7    1.6
LEMONT                5.0    5.0    5.0    5.0    4.9    4.9    4.9
:W BR DU PAGE RIVER
WARRENVILLE           7.2    7.2    7.2    7.2    7.2    7.2    7.2
:EAST BRANCH DU PAGE RIVER
BOLINGBROOK          14.3   14.3   14.3   14.3   14.3   14.3   14.3
:DU PAGE RIVER
SHOREWOOD             2.1    2.1    2.1    2.1    2.1    2.1    2.1
:MAZON RIVER
COAL CITY             1.9    1.9    1.9    1.9    1.8    1.5    1.3
:FOX RIVER
ALGONQUIN TAILWAT     3.6    3.6    3.6    3.6    3.3    3.3    3.3
MONTGOMERY           10.8   10.8   10.8   10.8   10.8   10.7   10.7
DAYTON                5.2    5.1    5.1    5.0    5.0    4.9    4.9
:VERMILION RIVER
PONTIAC               3.5    3.5    3.5    3.4    3.3    3.2    3.1
LEONORE               4.3    4.3    4.2    4.2    4.0    3.9    3.7
:PECATONICA RIVER
SHIRLAND              4.0    4.0    4.0    4.0    3.9    3.8    3.8
:ROCK RIVER
ROCKTON               2.5    2.5    2.5    2.5    2.5    2.4    2.4
LATHAM PARK           3.5    3.5    3.5    3.5    3.5    3.5    3.4
ROCKFORD              2.2    2.2    2.2    2.2    2.1    2.1    2.1
:KISHWAUKEE RIVER
BELVIDERE             1.4    1.4    1.4    1.4    1.4    1.4    1.4
:SOUTH BRANCH KISHWAUKEE RIVER
DE KALB               2.8    2.8    2.8    2.8    2.8    2.8    2.8
:KISHWAUKEE RIVER
PERRYVILLE            5.4    5.4    5.4    5.4    5.4    5.4    5.4
:ROCK RIVER
BYRON                 4.8    4.8    4.8    4.8    4.8    4.7    4.7
DIXON                 7.9    7.9    7.9    7.9    7.9    7.8    7.8
:NORTH BRANCH CHICAGO RIVER
CHICAGO ALBANY AV     1.1    1.1    1.1    1.1    1.0    1.0    1.0
:ILLINOIS RIVER
MORRIS                5.1    5.1    5.1    5.1    5.0    4.9    4.8
OTTAWA              458.5  458.5  458.5  458.5  458.5  458.5  458.5
LA SALLE             11.2   11.1   11.1   11.1   11.0   10.9   10.9

THE NATIONAL WEATHER SERVICE CHICAGO OFFICE IN ROMEOVILLE ISSUES
LONG RANGE AHPS OUTLOOKS FOR ALL RIVER FORECAST LOCATIONS. THIS
PRODUCT IS UPDATED MONTHLY AROUND MID-MONTH. THESE OUTLOOKS ARE
ISSUED IN ADDITION TO THE 5 DAY RIVER FORECASTS THAT ARE ISSUED
WHEN RIVER FORECAST LOCATIONS ARE IN FLOOD OR FORECAST TO RISE
ABOVE FLOOD STAGE.

THIS LONG-RANGE PROBABILISTIC OUTLOOK CONTAINS FORECAST VALUES
THAT ARE CALCULATED USING MULTIPLE SEASON SCENARIOS FROM 30 OR
MORE YEARS OF CLIMATOLOGICAL DATA INCLUDING CURRENT CONDITIONS
OF THE RIVER...SOIL MOISTURE...AND 30 TO 90 DAY LONG-RANGE
OUTLOOKS OF TEMPERATURE AND PRECIPITATION.

BY PROVIDING THE COMPLETE RANGE OF PROBABILISTIC NUMBERS...THE
LEVEL OF RISK ASSOCIATED WITH LONG-RANGE PLANNING DECISIONS CAN
BE DETERMINED. THESE PROBABILISTIC FORECASTS ARE PART OF THE
NATIONAL WEATHER SERVICE ADVANCED HYDROLOGIC PREDICTION SERVICE.

VISIT OUR WEB PAGE AT WEATHER.GOV/CHICAGO FOR MORE WEATHER AND
RIVER INFORMATION INCLUDING GRAPHS OF PROBABILISTIC RIVER OUTLOOKS.

...FLOOD TERMINOLOGY...

MINOR FLOODING IS USED TO INDICATE MINIMAL OR NO PROPERTY
DAMAGE. HOWEVER SOME PUBLIC INCONVENIENCE IS POSSIBLE.

MODERATE FLOODING IS USED TO INDICATE THE INUNDATION OF SECONDARY
ROADS. TRANSFER TO HIGHER ELEVATIONS MAY BE NECESSARY TO SAVE
PROPERTY. SOME EVACUATIONS MAY BE REQUIRED.

MAJOR FLOODING IS USED TO INDICATE EXTENSIVE INUNDATION AND PROPERTY
DAMAGE USUALLY CHARACTERIZED BY EVACUATION OF PEOPLE AND LIVESTOCK
AND CLOSURE OF BOTH PRIMARY AND SECONDARY ROADS.

VISIT OUR WEB PAGE AT WEATHER.GOV/CHICAGO FOR MORE WEATHER AND RIVER
INFORMATION INCLUDING GRAPHS OF PROBABILISTIC RIVER OUTLOOKS.

THE NEXT SPRING FLOOD OUTLOOK WILL BE ISSUED ON MARCH 5 2015.

$$

MORRIS















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