Flood Potential Outlook
Issued by NWS Springfield, MO

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PROBABILISTIC HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE Springfield MO
3:00 PM CST Thu Mar 13 2025

...Spring Flood and Water Resources Outlook Number 3...

This Spring Flood and Water Resources Outlook is for the larger
river systems in the National Weather Service Springfield, Missouri
Hydrologic Service Area (HSA). This includes the Spring, Osage, Sac,
Gasconade, James, Current, and Elk River Basins.

Near normal to below normal flood potential is expected across the
Springfield HSA. Springtime flooding is driven by typical thunderstorm
activity. Details on the chances for minor, moderate, and major flooding
for area river forecast points are given in the outlook tables below.

Summary of Recent Conditions:
Precipitation from December - February was below normal across most of the HSA.
Over the past two weeks, since the last Spring Flood Outlook, above normal
precipitation occurred across western portions of the HSA with normal to below
normal precipitation elsewhere.

Soil moisture is generally below normal except across southeastern and western
portions of the HSA.

During the month of February below normal to much below normal streamflow was observed
across portions of the Niangua, Pomme De Terre, Sac, Spring, and Elk watersheds.
Elsewhere, normal streamflow conditions occurred across the HSA.

Currently, nearly 2/3 of the HSA is classified as Abnormally Dry (D0) or
Moderate Drought (D1). These dry conditions generally extend across the western HSA.

Outlook:
Seasonal outlooks through the end of May show equal chances for above, below, or
near normal temperatures and slightly elevated chances for above normal precipitation
across eastern portions of the HSA.  The US Monthly Drought Outlook shows drought
conditions persisting through March. Longer term outlooks indicate improved drought
conditions over the next few months.


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:  03/15/2025  - 06/13/2025

                                       :    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
--------           -----  -----  ----- : ---  ---  ---  ---  ---  ---
:Little Osage River
Fulton              22.0   25.0   30.0 :  65   63   50   50   <5   <5
Horton              41.0   45.0   50.0 :  82   88   22   24   <5   <5
:Marmaton River
Fort Scott          38.0   42.0   43.0 :  26   29    9   10    6    8
Nevada              20.0   26.0   31.0 :  68   76   38   41   13   14
:Osage River
Taberville          23.0   34.0   46.0 :  46   58   13   15   <5   <5
:Sac River
Caplinger Mills     16.0   19.0   28.0 :  51   54   44   50   11   13
:Gasconade River
Hazelgreen          21.0   26.0   30.0 :  20   27   13   18    8    9
:Roubidoux Creek
Waynesville          7.0   14.0   20.0 :  27   49    7    9   <5   <5
:Big Piney River
Fort Leonard Wood    8.0   15.0   23.0 :  77   81   30   39    8    8
:Gasconade River
Jerome              15.0   25.0   30.0 :  37   51    9   21    7    8
:Spring River
Carthage            10.0   14.0   20.0 :  28   36    9    9   <5   <5
Waco                19.0   30.0   33.0 :  32   38   <5   <5   <5   <5
Baxter Springs      14.0   22.0   30.0 :  32   34    9   13   <5   <5
:Shoal Creek
Joplin              11.5   16.0   18.0 :  15   18    6    6   <5   <5
:Elk River
Tiff City            15.0   20.0   25.0 :  13   33    5   13   <5   <5
:Current River
Powder Mill          8.0   25.0   40.0 :  25   65   <5   10   <5   <5
:Jacks Fork
Alley Spring         9.0   12.0   16.0 :  13   32    5   12   <5    7
Eminence            12.0   15.0   20.0 :  <5   17   <5    9   <5   <5
:James River
Galena              15.0   25.0   31.0 :  16   44   <5   19   <5   14
Boaz                10.0   18.0   24.0 :  14   66   <5   20   <5   11

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: 03/15/2025  - 06/13/2025
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Little Osage River
Fulton                6.9   12.2   18.0   25.1   27.3   27.9   29.3
Horton               35.3   40.9   41.6   43.1   44.5   47.4   48.5
:Marmaton River
Fort Scott           13.3   16.5   24.2   31.1   38.5   41.8   43.3
Nevada                8.4   12.0   16.0   24.4   29.3   32.6   36.6
:Osage River
Taberville           12.7   16.2   18.2   21.6   25.8   35.2   38.4
:Sac River
Caplinger Mills       7.7    8.2   11.2   16.8   25.9   28.4   30.0
:Gasconade River
Hazelgreen            2.9    3.7    5.9   11.2   18.6   26.2   35.0
:Roubidoux Creek
Waynesville           2.1    2.6    3.3    4.4    7.3   10.8   15.7
:Big Piney River
Fort Leonard Wood     3.2    4.2    8.2   10.6   15.5   20.2   27.4
:Gasconade River
Jerome                3.8    4.9    7.7   12.4   18.4   24.2   32.4
:Spring River
Carthage              3.5    3.9    5.0    7.0   10.5   13.9   16.5
Waco                  5.5    7.2    9.8   13.9   21.2   25.2   26.9
Baxter Springs        5.9    6.4    7.7   10.5   15.4   21.9   24.9
:Shoal Creek
Joplin                2.1    2.8    4.3    5.7    7.5   13.6   16.7
:Elk River
Tiff City              4.5    4.9    5.8    7.8   11.4   16.0   20.2
:Current River
Powder Mill           3.3    3.3    3.3    3.3    8.1   15.0   19.3
:Jacks Fork
Alley Spring          2.5    2.5    2.5    2.5    6.1    9.7   12.1
Eminence              2.4    2.4    2.4    2.4    5.7    9.5   11.8
:James River
Galena                5.0    5.0    5.0    5.0    9.2   18.4   23.0
Boaz                  3.3    3.3    3.3    3.3    5.7   11.7   14.8


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: 03/15/2025  - 06/13/2025
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Little Osage River
Fulton                3.4    3.4    3.4    3.3    3.3    3.3    3.3
Horton               25.4   25.4   25.4   25.4   25.4   25.4   25.4
:Marmaton River
Fort Scott            7.5    7.5    7.2    6.9    6.8    6.8    6.7
Nevada                2.9    2.8    2.5    2.2    2.1    2.1    2.0
:Osage River
Taberville            9.4    9.2    9.1    9.0    9.0    9.0    8.9
:Sac River
Caplinger Mills       5.6    5.6    5.6    5.4    5.4    5.4    5.4
:Gasconade River
Hazelgreen            2.0    2.0    1.8    1.7    1.4    1.3    1.1
:Roubidoux Creek
Waynesville           1.4    1.4    1.3    1.3    1.3    1.2    1.2
:Big Piney River
Fort Leonard Wood     2.4    2.3    2.3    2.1    1.8    1.7    1.6
:Gasconade River
Jerome                2.5    2.4    2.2    2.1    1.9    1.7    1.5
:Current River
Powder Mill           2.6    2.4    2.2    1.0    1.0    1.0    1.0
:Jacks Fork
Alley Spring          2.1    2.1    2.0    1.6    1.6    1.6    1.6
Eminence              1.7    1.6    1.6    1.4    1.4    1.4    1.4
:James River
Galena                3.9    3.8    3.4    3.2    3.2    3.2    3.2
Boaz                  2.5    2.4    2.1    1.9    1.9    1.9    1.9

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.

Visit our web site weather.gov/sgf for more weather and water
information.

This will be the last Spring Flood Outlook issued for this year. An
updated Probabilistic Hydrologic Outlook will be issued during the
last week of March.

$$

Grout