332  
FGUS73 KOAX 151818  
ESFOAX  
NEC003-023-025-039-053-055-067-095-107-109-119-127-139-141-147-151-  
153-155-159-167-IAC071-085-133-137-145-155-DDHHMM-  
 
PROBABILISTIC HYDROLOGIC OUTLOOK  
NATIONAL WEATHER SERVICE OMAHA NE  
1211 PM CST THU FEB 15 2018  
   
..SPRING FLOOD OUTLOOK
 
 
...THERE IS ABOVE-NORMAL RISK FOR SPRING FLOODING DUE TO ICE JAMS,  
OTHERWISE, THE RISK FOR SPRING FLOODING IS NEAR NORMAL...  
 
THIS FLOOD OUTLOOK IS FOR THE NATIONAL WEATHER SERVICE (NWS)  
OMAHA/VALLEY HYDROLOGIC SERVICES AREA. THIS AREA INCLUDES EASTERN  
NEBRASKA AND PORTIONS OF SOUTHWEST IOWA INCLUDING THE FOLLOWING  
RIVERS AND THEIR TRIBUTARIES:  
 
MISSOURI RIVER FROM DECATUR TO RULO  
NIOBRARA RIVER FROM VERDEL TO THE MISSOURI RIVER  
BIG BLUE RIVER FROM SURPRISE TO THE KANSAS BORDER  
ELKHORN RIVER FROM NELIGH TO THE PLATTE RIVER CONFLUENCE  
PLATTE RIVER FROM DUNCAN TO THE MISSOURI RIVER CONFLUENCE  
OTHER TRIBUTARIES TO THE MISSOURI RIVER IN IOWA AND NEBRASKA  
 
** CURRENT FLOOD OUTLOOK HIGHLIGHTS **  
.OVERVIEW: THIS YEAR THERE ARE TWO IMPORTANT ASPECTS TO THE SPRING  
FLOOD OUTLOOK. THE FIRST IS THE RISK OF FLOODING DUE TO ICE JAMS.  
ALONG AREA RIVERS, SIGNIFICANT ICE COVER REMAINS IN PLACE. WHILE THIS  
CONDITION ISN'T UNCOMMON, IT HAS BEEN SEVERAL YEARS SINCE THICK ICE  
HAS BEEN OBSERVED IN EASTERN NEBRASKA. THIS COUPLED WITH THE  
POTENTIAL FOR BELOW-NORMAL TEMPERATURES THROUGH THE END OF FEBRUARY  
COULD LEAD TO A LATER-THAN-NORMAL ICE BREAKUP. THE OTHER ASPECT TO  
THIS YEAR'S OUTLOOK IS THE GENERAL FLOOD RISK DUE TO SNOWMELT, PAST  
PRECIPITATION AND SOIL CONDITIONS. THIS YEAR THAT ELEMENT OF FLOOD  
RISK IS NEAR NORMAL.  
 
***********************************  
** SUMMARY OF CURRENT CONDITIONS **  
***********************************  
 
.MOUNTAIN SNOWPACK: TO DATE THE SNOWPACK IN THE HEADWATERS OF THE  
MISSOURI RIVER IS AT 137% OF NORMAL. THE SNOWPACK IN THE HEADWATERS  
OF THE PLATTE RIVER IS AT 89% OF NORMAL.  
 
.PLAINS SNOWPACK: APPRECIABLE SNOW COVER REMAINS ACROSS MUCH OF  
EASTERN NEBRASKA AND WESTERN IOWA. IN NORTHEAST NEBRASKA THE WATER  
CONTENT OF THE SNOW RANGES FROM 0.3 INCHES TO ONE INCH.  
 
.ICE JAM THREAT: RECENT ICE THICKNESS MEASUREMENTS INDICATE THERE IS  
ANYWHERE FROM 12 TO 18 INCHES OF ICE ON THE LOWER PLATTE RIVER. THIS  
RISK IS CONDITIONAL AND WILL DEPEND ON TIMING OF BREAKUP AND EVENTUAL  
ICE MOVEMENT. FOR NOW, PERSONS ALONG THE PLATTE, ELKHORN AND LOUP  
RIVERS SHOULD REMAIN VIGILANT TO THIS FLOOD POTENTIAL.  
 
.SOIL CONDITIONS: SOIL MOISTURE IS NEAR NORMAL FOR MOST AREAS WITH  
SOME AREAS OF NORTHEAST NEBRASKA REPORTING ABOVE-NORMAL SOIL  
MOISTURE. REPORTS INDICATE FROST DEPTHS RANGE FROM 8 TO 14 INCHES.  
EACH YEAR FROST IS A CONDITIONAL THREAT. THE CONTRIBUTION OF FROST  
TO OVERALL FLOOD THREAT DEPENDS ON THE PRESENCE OF FROST DURING  
PERIODS OF HEAVY SPRING RAIN. IN MOST YEARS, THE FROST IS GONE PRIOR  
TO SPRING RAINS.  
 
.CURRENT RIVER CONDITIONS: THIS TIME OF YEAR THE AMOUNT OF WATER IN  
RIVERS IS MOSTLY UNKNOWN DUE TO ICE COVER AND THOSE EFFECTS. FOR THE  
RIVERS WE HAVE REAL-TIME FLOW INFORMATION FOR, MOST ARE IN THE NORMAL  
TO ABOVE NORMAL CATEGORY.  
 
.CLIMATE OUTLOOK FOR THE NEXT TWO WEEKS: THE LATEST FORECAST FAVORS  
BELOW-NORMAL TEMPERATURES AND ABOVE-NORMAL PRECIPITATION.  
 
.CLIMATE OUTLOOK FOR MARCH THROUGH MAY: THE LATEST FORECAST FAVORS  
EQUAL CHANCES FOR BELOW-NEAR-ABOVE NORMAL TEMPERATURES AND EQUAL  
CHANCES FOR BELOW-NEAR-ABOVE NORMAL PRECIPITATION.  
 
BELOW IS SOME RIVER SPECIFIC INFORMATION RELATED TO THIS YEARS  
OUTLOOK.  
 
***************************************  
* MISSOURI RIVER FROM DECATUR TO RULO *  
***************************************  
 
OVERVIEW: THERE IS A GREATER THAN 50% CHANCE FOR MINOR FLOODING ALONG  
THE MISSOURI RIVER BELOW NEBRASKA CITY. AREAS UPSTREAM OF NEBRASKA  
CITY ARE LESS LIKELY TO REACH FLOOD STAGE, ESPECIALLY ABOVE THE  
PLATTE RIVER CONFLUENCE.  
 
AVERAGE RECENT STREAMFLOW  
STREAMFLOW LONG-TERM AS A % OF  
PAST 14 DAYS MEAN FLOW LONG-TERM MEAN  
---------------------------------------------------------------------  
MISSOURI RIVER:  
AT DECATUR 20,276 19,500 104%  
AT OMAHA 22,829 19,600 116%  
AT NEBRASKA CITY 30,489 26,300 116%  
AT RULO 30,209 27,600 109%  
 
********************************  
* OTHER RIVERS ACROSS THE AREA *  
********************************  
 
MOST RIVERS ACROSS THE AREA HAVE A NEAR NORMAL THREAT OF FLOODING  
OVER THE NEXT 90 DAYS. DUE TO FAVORABLE ANTECEDENT CONDITIONS,  
THE FOLLOWING RIVERS HAVE AN ABOVE-NORMAL THREAT FOR REACHING OR  
EXCEEDING MINOR FLOOD STAGE.  
 
ELKHORN RIVER (DUE TO ICE JAMS)  
LINCOLN CREEK NEAR SEWARD  
PLATTE RIVER (DUE TO ICE JAMS)  
SALT CREEK (DOWNSTREAM OF LINCOLN)  
WAHOO CREEK  
 
* AN UPDATED SPRING FLOOD OUTLOOK WILL BE ISSUED ON MARCH 1ST.  
 
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: 02/17/2018 - 05/18/2018  
 
: 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  
-------- ----- ----- ----- : --- --- --- --- --- ---  
:NIOBRARA RIVER  
VERDEL 7.0 9.0 10.0 : <5 <5 <5 <5 <5 <5  
:PONCA CREEK  
VERDEL 13.5 15.0 17.0 : 7 8 5 6 <5 <5  
:ELKHORN RIVER  
NELIGH 11.0 12.0 14.0 : <5 <5 <5 <5 <5 <5  
NORFOLK 12.0 13.0 17.0 : <5 <5 <5 <5 <5 <5  
:NORTH FORK ELKHORN RIVER  
PIERCE 12.0 14.0 16.0 : 9 10 6 8 <5 <5  
:ELKHORN RIVER  
PILGER 12.0 14.0 15.0 : 5 <5 <5 <5 <5 <5  
WEST POINT 12.0 16.0 18.7 : 12 6 <5 <5 <5 <5  
WINSLOW 18.0 20.0 24.0 : 10 <5 <5 <5 <5 <5  
:LOGAN CREEK  
UEHLING 18.0 19.0 21.0 : 11 <5 9 <5 <5 <5  
:MAPLE CREEK  
NICKERSON 11.5 13.0 17.0 : <5 10 <5 <5 <5 <5  
:ELKHORN RIVER  
WATERLOO 17.0 18.0 21.0 : <5 <5 <5 <5 <5 <5  
:PLATTE RIVER  
DUNCAN 8.0 9.0 10.0 : 5 6 <5 <5 <5 <5  
:SHELL CREEK  
COLUMBUS 20.0 21.0 22.0 : 9 5 5 <5 <5 <5  
:PLATTE RIVER  
NORTH BEND 8.0 12.0 15.0 : 10 13 <5 <5 <5 <5  
LESHARA 8.0 10.0 12.0 : 14 17 <5 <5 <5 <5  
ASHLAND 20.0 22.0 26.0 : 9 6 <5 <5 <5 <5  
:SALT CREEK  
ROCA 19.0 21.5 23.0 : 6 7 <5 <5 <5 <5  
LINCOLN (N 27TH S 20.5 26.5 29.0 : 7 8 <5 <5 <5 <5  
GREENWOOD 20.0 24.0 31.0 : 23 18 6 7 <5 <5  
:WAHOO CREEK  
ITHACA 19.0 22.0 23.0 : 17 37 7 9 <5 <5  
:SALT CREEK  
ASHLAND 16.0 20.0 23.0 : 31 32 10 9 5 <5  
:PLATTE RIVER  
LOUISVILLE 9.0 11.0 12.0 : 11 7 <5 <5 <5 <5  
:BIG BLUE RIVER  
SURPRISE 7.0 10.0 12.0 : 13 10 <5 <5 <5 <5  
:LINCOLN CREEK  
SEWARD 15.0 17.0 20.0 : 34 23 8 6 <5 <5  
:BIG BLUE RIVER  
SEWARD 18.0 22.0 27.0 : 15 9 <5 <5 <5 <5  
:WEST FORK BIG BLUE RIVER  
DORCHESTER 15.0 22.0 24.4 : 6 22 <5 <5 <5 <5  
:BIG BLUE RIVER  
CRETE 21.0 25.0 29.0 : 28 29 <5 6 <5 <5  
:TURKEY CREEK  
WILBER 12.5 16.0 21.0 : 33 32 <5 <5 <5 <5  
:BIG BLUE RIVER  
BEATRICE 18.0 26.0 32.0 : 12 22 <5 <5 <5 <5  
BARNESTON 20.0 27.0 33.0 : 7 13 <5 6 <5 <5  
:LITTLE BLUE RIVER  
FAIRBURY 18.5 20.0 23.0 : <5 <5 <5 <5 <5 <5  
:MAPLE RIVER  
MAPLETON 21.0 24.0 27.0 : 5 5 <5 <5 <5 <5  
:LITTLE SIOUX RIVER  
TURIN 25.0 28.0 34.5 : 6 8 5 6 <5 <5  
:SOLDIER RIVER  
PISGAH 28.0 29.0 30.0 : <5 <5 <5 <5 <5 <5  
:BOYER RIVER  
LOGAN 21.0 22.0 25.0 : 6 5 5 5 5 <5  
:WEEPING WATER CREEK  
UNION 25.0 28.0 30.0 : 6 11 <5 <5 <5 <5  
:EAST NISHNABOTNA RIVER  
RED OAK 18.0 22.0 27.0 : 22 36 10 16 <5 6  
:WEST NISHNABOTNA RIVER  
HANCOCK 14.0 19.0 23.0 : 31 34 12 25 5 5  
RANDOLPH 19.0 22.0 24.0 : 34 42 8 14 5 5  
:NISHNABOTNA RIVER  
HAMBURG 25.0 27.5 33.0 : 22 44 7 12 <5 <5  
:LITTLE NEMAHA RIVER  
AUBURN 22.0 23.0 27.0 : 9 13 7 11 <5 <5  
:NORTH FORK BIG NEMAHA RIVER  
HUMBOLDT 28.0 29.5 31.0 : <5 <5 <5 <5 <5 <5  
:BIG NEMAHA RIVER  
FALLS CITY 27.0 30.0 36.0 : 6 13 <5 8 <5 <5  
:NODAWAY RIVER  
CLARINDA 23.0 26.0 29.0 : 6 7 <5 <5 <5 <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: 02/17/2018 - 05/18/2018  
LOCATION 95% 90% 75% 50% 25% 10% 5%  
-------- ------ ------ ------ ------ ------ ------ ------  
:NIOBRARA RIVER  
VERDEL 3.5 3.6 3.8 4.0 4.2 4.5 5.0  
:PONCA CREEK  
VERDEL 5.5 6.1 7.5 8.2 9.3 12.2 14.7  
:ELKHORN RIVER  
NELIGH 3.8 4.3 5.0 6.3 7.5 8.4 9.2  
NORFOLK 3.6 3.8 4.2 5.3 6.3 7.5 9.5  
:NORTH FORK ELKHORN RIVER  
PIERCE 2.8 3.2 3.6 5.9 8.3 11.8 14.3  
:ELKHORN RIVER  
PILGER 8.3 8.5 8.7 9.2 9.7 10.6 11.9  
WEST POINT 8.5 8.7 9.1 9.8 10.7 12.5 13.2  
WINSLOW 11.5 11.9 12.8 14.2 15.7 18.1 19.2  
:LOGAN CREEK  
UEHLING 9.7 10.2 11.6 13.3 16.1 18.4 19.6  
:MAPLE CREEK  
NICKERSON 5.0 5.2 6.0 7.2 8.5 10.2 10.7  
:ELKHORN RIVER  
WATERLOO 7.1 7.3 8.1 10.2 12.4 14.6 15.4  
:PLATTE RIVER  
DUNCAN 4.3 4.4 4.6 5.1 6.2 7.1 7.9  
:SHELL CREEK  
COLUMBUS 8.7 8.8 10.1 15.2 17.6 19.8 20.9  
:PLATTE RIVER  
NORTH BEND 5.0 5.2 5.5 6.4 7.1 7.9 8.7  
LESHARA 5.0 5.2 5.7 6.7 7.5 8.4 9.2  
ASHLAND 17.0 17.1 17.5 18.4 19.0 19.9 20.4  
:SALT CREEK  
ROCA 1.7 2.8 4.6 7.3 13.8 18.2 19.7  
LINCOLN (N 27TH S 2.5 4.5 6.1 10.1 14.5 18.1 21.6  
GREENWOOD 2.4 4.3 6.9 12.2 18.5 22.4 25.1  
:WAHOO CREEK  
ITHACA 3.5 3.8 6.2 9.9 14.6 21.8 22.3  
:PLATTE RIVER  
LOUISVILLE 5.2 5.3 6.2 7.0 8.1 9.1 9.5  
:BIG BLUE RIVER  
SURPRISE 2.6 2.8 3.2 4.0 5.7 7.5 8.8  
:LINCOLN CREEK  
SEWARD 6.8 7.3 11.1 13.6 15.5 16.6 18.2  
:BIG BLUE RIVER  
SEWARD 3.7 4.3 7.7 11.7 15.5 19.1 20.3  
:WEST FORK BIG BLUE RIVER  
DORCHESTER 4.1 4.7 7.0 10.6 12.7 14.6 15.5  
:BIG BLUE RIVER  
CRETE 9.6 10.5 14.3 18.5 21.4 23.3 23.9  
:TURKEY CREEK  
WILBER 2.9 5.1 7.7 10.9 13.2 14.8 15.8  
:BIG BLUE RIVER  
BEATRICE 5.3 5.9 8.5 11.0 14.7 18.4 19.5  
BARNESTON 5.6 6.4 9.4 12.2 16.0 18.8 22.0  
:LITTLE BLUE RIVER  
FAIRBURY 7.5 7.7 9.0 11.6 14.1 15.4 17.4  
:MAPLE RIVER  
MAPLETON 6.3 7.3 8.8 11.2 12.8 14.8 21.2  
:LITTLE SIOUX RIVER  
TURIN 9.0 9.4 11.5 16.5 19.2 22.4 27.7  
:SOLDIER RIVER  
PISGAH 6.3 6.9 7.9 9.4 10.7 11.9 16.6  
:BOYER RIVER  
LOGAN 7.9 8.3 9.6 12.1 15.8 19.7 23.0  
:WEEPING WATER CREEK  
UNION 4.2 5.4 7.6 9.5 16.4 21.6 25.7  
:EAST NISHNABOTNA RIVER  
RED OAK 7.3 8.0 10.9 12.7 16.6 21.7 24.2  
:WEST NISHNABOTNA RIVER  
HANCOCK 5.4 6.4 7.9 8.8 16.3 20.1 23.0  
RANDOLPH 10.4 11.4 14.0 16.3 20.5 21.6 23.8  
:NISHNABOTNA RIVER  
HAMBURG 11.1 12.3 17.1 22.1 24.6 26.8 28.8  
:LITTLE NEMAHA RIVER  
AUBURN 7.0 9.7 12.4 14.2 16.8 21.3 23.8  
:NORTH FORK BIG NEMAHA RIVER  
HUMBOLDT 4.6 5.3 6.8 8.3 13.2 17.3 20.1  
:BIG NEMAHA RIVER  
FALLS CITY 6.2 8.4 11.3 14.9 20.8 24.0 28.2  
:NODAWAY RIVER  
CLARINDA 11.4 11.7 13.0 13.9 18.8 21.1 23.7  
 
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: 02/17/2018 - 05/18/2018  
LOCATION 95% 90% 75% 50% 25% 10% 5%  
-------- ------ ------ ------ ------ ------ ------ ------  
:NIOBRARA RIVER  
VERDEL 3.4 3.4 3.4 3.4 3.3 3.3 3.3  
:PONCA CREEK  
VERDEL 4.8 4.8 4.8 4.8 4.8 4.7 4.0  
:ELKHORN RIVER  
NELIGH 0.9 0.8 0.7 0.5 0.3 0.3 0.2  
NORFOLK 2.9 2.9 2.8 2.7 2.6 2.5 2.5  
:NORTH FORK ELKHORN RIVER  
PIERCE 2.6 2.6 2.6 2.5 2.3 2.2 2.1  
:ELKHORN RIVER  
PILGER 7.1 7.1 7.0 6.9 6.5 6.3 6.3  
WEST POINT 7.0 7.0 7.0 6.8 6.5 6.4 6.3  
WINSLOW 8.8 8.8 8.8 8.7 8.5 8.4 8.4  
:LOGAN CREEK  
UEHLING 3.8 3.8 3.8 3.8 3.7 3.6 3.5  
:MAPLE CREEK  
NICKERSON 1.0 1.0 1.0 1.0 1.0 1.0 1.0  
:ELKHORN RIVER  
WATERLOO 3.3 3.3 3.3 3.2 2.9 2.7 2.6  
:PLATTE RIVER  
DUNCAN 4.1 4.1 4.1 3.9 3.4 3.4 3.4  
:SHELL CREEK  
COLUMBUS 0.6 0.6 0.6 0.6 0.6 0.5 0.5  
:PLATTE RIVER  
NORTH BEND 3.7 3.6 3.6 3.5 3.0 2.9 2.8  
LESHARA 4.1 4.1 4.1 3.9 3.5 3.2 3.2  
ASHLAND 15.3 15.3 15.3 15.1 14.8 14.6 14.5  
:SALT CREEK  
ROCA 1.7 1.7 1.7 1.7 1.7 1.7 1.6  
LINCOLN (N 27TH S 2.5 2.5 2.5 2.5 2.5 2.4 2.4  
GREENWOOD 2.4 2.4 2.4 2.4 2.4 2.3 2.3  
:WAHOO CREEK  
ITHACA 3.5 3.5 3.5 3.5 3.5 3.4 3.4  
:PLATTE RIVER  
LOUISVILLE 3.8 3.8 3.7 3.6 3.3 3.1 3.0  
:BIG BLUE RIVER  
SURPRISE 1.3 1.3 1.3 1.3 1.3 1.2 1.2  
:LINCOLN CREEK  
SEWARD 3.9 3.9 3.9 3.8 3.8 3.7 3.6  
:BIG BLUE RIVER  
SEWARD 1.6 1.6 1.6 1.6 1.6 1.5 1.5  
:WEST FORK BIG BLUE RIVER  
DORCHESTER 2.6 2.6 2.6 2.6 2.5 2.5 2.4  
:BIG BLUE RIVER  
CRETE 7.9 7.9 7.9 7.9 7.8 7.8 7.7  
:TURKEY CREEK  
WILBER 1.6 1.5 1.5 1.1 0.9 0.6 0.5  
:BIG BLUE RIVER  
BEATRICE 3.4 3.4 3.4 3.4 3.3 3.2 3.2  
BARNESTON 4.2 4.1 3.9 3.8 3.7 3.6 3.6  
:LITTLE BLUE RIVER  
FAIRBURY 6.5 6.5 6.5 6.5 6.3 6.3 6.2  
:MAPLE RIVER  
MAPLETON 5.1 5.1 5.1 5.1 5.1 5.0 5.0  
:LITTLE SIOUX RIVER  
TURIN 7.1 7.1 7.1 7.1 7.1 7.0 7.0  
:SOLDIER RIVER  
PISGAH 3.6 3.6 3.6 3.6 3.5 3.4 3.3  
:BOYER RIVER  
LOGAN 3.3 3.3 3.3 3.3 3.3 3.2 3.2  
:WEEPING WATER CREEK  
UNION 2.8 2.8 2.8 2.8 2.8 2.8 2.8  
:EAST NISHNABOTNA RIVER  
RED OAK 5.6 5.6 5.6 5.6 5.5 5.5 5.4  
:WEST NISHNABOTNA RIVER  
HANCOCK 1.2 1.2 1.2 1.2 1.2 1.2 1.2  
RANDOLPH 7.7 7.7 7.7 7.6 7.6 7.4 7.4  
:NISHNABOTNA RIVER  
HAMBURG 6.7 6.7 6.6 6.6 6.5 6.1 5.7  
:LITTLE NEMAHA RIVER  
AUBURN 3.2 3.2 3.2 3.2 3.2 3.2 3.2  
:NORTH FORK BIG NEMAHA RIVER  
HUMBOLDT 1.8 1.8 1.8 1.8 1.8 1.8 1.7  
:BIG NEMAHA RIVER  
FALLS CITY 3.7 3.7 3.7 3.7 3.7 3.6 3.6  
:NODAWAY RIVER  
CLARINDA 10.6 10.6 10.6 10.6 10.5 10.5 10.5  
 
THESE LONG-RANGE PROBABILISTIC OUTLOOKS CONTAIN 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...SNOW COVER...AND 30 TO 90 DAY LONG-RANGE  
OUTLOOKS OF TEMPERATURE AND PRECIPITATION. BY PROVIDING A RANGE OF  
PROBABILITIES...THE LEVEL OF RISK ASSOCIATED WITH LONG-RANGE PLANNING  
DECISIONS CAN BE DETERMINED. THESE PROBABILISTIC FORECASTS ARE PART  
OF THE NATIONAL WEATHER SERVICE'S ADVANCED HYDROLOGIC PREDICTION  
SERVICE.  
 
VISIT OUR WEB SITE WEATHER.GOV/OAX FOR MORE WEATHER AND WATER  
INFORMATION.  
 

 
 
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