Extended Streamflow Guidance
Issued by NWS

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FGUS63 KMSR 261518
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GRAND..MUSKEGON..WHITE..PERE MARQUETTE RIVER BASINS
LONG-RANGE PROBABILISTIC OUTLOOK
NATIONAL WEATHER SERVICE
NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN
917 AM CST TUE NOV 26 2024

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: 12/02/2024 - 03/02/2025

                                    : 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
--------          ----- ----- ----- : ---- ---- ---- ---- ---- ----
:Grand River
JACM4            14.0   15.0   16.0    11   14   <5   <5   <5   <5
:Buck Creek
BUCM4             9.0   10.5   12.0    <5   <5   <5   <5   <5   <5
:Grand River
ETNM4             6.0    8.0    9.0    <5   <5   <5   <5   <5   <5
DMDM4            13.0   14.0   16.0    <5   <5   <5   <5   <5   <5
:Red Cedar River
WMSM4             9.0   10.0   10.5    <5   <5   <5   <5   <5   <5
ELNM4             7.0   10.0   13.0    13   11   <5   <5   <5   <5
:Sycamore Creek
HHTM4             8.0    9.0   10.0    15   16   <5   <5   <5   <5
:Grand River
LNSM4            11.0   13.0   15.0    <5   <5   <5   <5   <5   <5
GDLM4            11.0   13.0   15.0    <5   <5   <5   <5   <5   <5
PORM4            12.0   14.0   16.0    <5   <5   <5   <5   <5   <5
:Looking Glass River
EAGM4             7.0    9.0   11.0    15   16   <5   <5   <5   <5
:Maple River
MRPM4             9.0   11.0   13.0    34   51   <5   <5   <5   <5
:Grand River
IONM4            21.0   23.0   25.0    <5   <5   <5   <5   <5   <5
:Flat River
SMYM4             8.5    9.5   10.5    <5   <5   <5   <5   <5   <5
:Grand River
LWLM4            15.0   18.0   20.0    <5   <5   <5   <5   <5   <5
:Thornapple River
HSTM4             7.0    9.0   10.0    11   15   <5   <5   <5   <5
CLDM4            10.0   12.0   14.0    <5    8   <5   <5   <5   <5
:Grand River
ADAM4            20.0   22.0   25.0    <5   <5   <5   <5   <5   <5
:Rogue River
ROCM4             8.0   10.0   11.0    <5    7   <5   <5   <5   <5
:Grand River
GDRM4            18.0   21.0   23.0    <5    5   <5   <5   <5   <5
:Pere Marquette River
SCTM4             5.5    6.5    7.0    <5   <5   <5   <5   <5   <5
:White River
WHTM4             6.0    7.0    8.0    <5   <5   <5   <5   <5   <5
:Muskegon River
EVRM4            12.0   13.0   14.0    <5   <5   <5   <5   <5   <5
:Little Muskegon River
MORM4             6.0    7.0    8.0    <5   <5   <5   <5   <5   <5
:Muskegon River
CROM4             9.0   11.0   12.0    <5    6   <5   <5   <5   <5
NEWM4            11.0   14.0   15.0    <5   20   <5   <5   <5   <5
BDGM4            13.0   16.0   17.0    <5   12   <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...

.B MSR 1202 Z DH12 /DC2411261517/DVD90/HGVFZXT/HGVFZX9/HGVFZXH
.B1 /HGVFZX5/HGVFZXG/HGVFZX1/HGVFZXF
:
:       Chance of Exceeding Stages (ft) at Specific Locations
:             Valid  Period: 12/02/2024 - 03/02/2025
:
:           95%     90%     75%     50%     25%     10%      5%
:           ---     ---     ---     ---     ---     ---     ---
:Grand River
JACM4      10.0/   10.2/   11.0/   12.1/   13.1/   14.1/   14.3
:Buck Creek
BUCM4       5.3/    5.6/    6.4/    7.0/    7.6/    8.4/    8.9
:Grand River
ETNM4       3.7/    3.7/    3.9/    4.2/    4.6/    5.0/    5.4
DMDM4       5.1/    5.2/    6.0/    7.1/    8.2/    9.0/    9.6
:Red Cedar River
WMSM4       3.8/    4.2/    5.4/    6.2/    7.3/    7.9/    8.3
ELNM4       4.1/    4.2/    4.9/    5.6/    6.4/    7.2/    7.5
:Sycamore Creek
HHTM4       4.8/    4.9/    6.5/    6.9/    7.6/    8.4/    8.8
:Grand River
LNSM4       3.5/    3.9/    5.2/    6.7/    8.1/    9.4/   10.0
GDLM4       5.3/    5.5/    5.9/    6.7/    7.5/    8.3/    8.7
PORM4       6.1/    6.6/    7.2/    8.4/    9.4/   10.2/   10.6
:Looking Glass River
EAGM4       3.5/    3.7/    4.8/    5.7/    6.6/    7.3/    8.0
:Maple River
MRPM4       4.6/    5.7/    7.2/    8.5/    9.2/    9.7/   10.1
:Grand River
IONM4       9.4/   10.1/   12.6/   15.7/   18.1/   19.5/   20.4
:Flat River
SMYM4       3.4/    3.5/    4.3/    4.8/    5.6/    6.2/    6.6
:Grand River
LWLM4       5.6/    6.2/    7.4/    9.4/   11.0/   12.7/   13.7
:Thornapple River
HSTM4       3.1/    3.4/    4.1/    5.2/    6.1/    7.3/    8.0
CLDM4       3.3/    3.8/    4.7/    6.0/    7.4/    9.0/    9.9
:Grand River
ADAM4       6.7/    7.8/    9.9/   13.3/   15.4/   17.1/   18.4
:Rogue River
ROCM4       3.9/    4.0/    4.5/    5.3/    6.1/    6.8/    7.4
:Grand River
GDRM4       2.1/    3.0/    5.9/   10.2/   12.6/   14.9/   16.4
:Pere Marquette River
SCTM4       1.3/    1.6/    2.3/    3.1/    3.8/    4.1/    4.6
:White River
WHTM4       1.9/    2.1/    2.9/    3.6/    4.4/    5.1/    5.4
:Muskegon River
EVRM4       7.2/    7.2/    7.6/    8.1/    8.8/    9.5/   10.3
:Little Muskegon River
MORM4       2.2/    2.3/    2.5/    2.8/    3.2/    3.9/    4.3
:Muskegon River
CROM4       5.0/    5.0/    5.7/    6.3/    6.8/    7.7/    8.2
NEWM4       7.5/    7.5/    8.0/    8.7/    9.2/   10.3/   10.8
BDGM4       7.6/    7.6/    8.4/    9.5/   10.3/   11.8/   12.4
.END


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

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

.B MSR 1202 Z DH12 /DC2411261517/DVD90/QIVFZNT/QIVFZN9/QIVFZNH
.B1 /QIVFZN5/QIVFZNG/QIVFZN1/QIVFZNF
:
:       Chance of Falling Below Flows (kcfs) at Specific Locations
:               Valid  Period: 12/02/2024 - 03/02/2025
:
:           95%     90%     75%     50%     25%     10%      5%
:           ---     ---     ---     ---     ---     ---     ---
:Grand River
JACM4       0.1/    0.1/    0.1/    0.1/    0.1/    0.0/    0.0
:Buck Creek
BUCM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
:Grand River
ETNM4       0.2/    0.2/    0.2/    0.2/    0.2/    0.2/    0.1
DMDM4       0.2/    0.2/    0.2/    0.2/    0.2/    0.2/    0.2
:Red Cedar River
WMSM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
ELNM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
:Sycamore Creek
HHTM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
:Grand River
LNSM4       0.3/    0.3/    0.3/    0.3/    0.3/    0.2/    0.2
GDLM4       0.3/    0.3/    0.3/    0.3/    0.3/    0.2/    0.2
PORM4       0.4/    0.4/    0.4/    0.3/    0.3/    0.3/    0.2
:Looking Glass River
EAGM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
:Maple River
MRPM4       0.0/    0.0/    0.0/    0.0/    0.0/    0.0/    0.0
:Grand River
IONM4       0.5/    0.5/    0.5/    0.5/    0.4/    0.4/    0.3
:Flat River
SMYM4       0.2/    0.2/    0.2/    0.2/    0.1/    0.1/    0.1
:Grand River
LWLM4       0.8/    0.8/    0.8/    0.8/    0.6/    0.6/    0.5
:Thornapple River
HSTM4       0.1/    0.1/    0.1/    0.1/    0.1/    0.0/    0.0
CLDM4       0.2/    0.2/    0.2/    0.2/    0.2/    0.1/    0.1
:Grand River
ADAM4       1.1/    1.1/    1.1/    1.0/    0.8/    0.8/    0.7
:Rogue River
ROCM4       0.1/    0.1/    0.1/    0.1/    0.1/    0.1/    0.1
:Grand River
GDRM4       1.2/    1.2/    1.2/    1.2/    1.0/    0.9/    0.8
:Pere Marquette River
SCTM4       0.5/    0.5/    0.5/    0.5/    0.5/    0.4/    0.4
:White River
WHTM4       0.3/    0.3/    0.3/    0.3/    0.3/    0.3/    0.3
:Muskegon River
EVRM4       0.6/    0.6/    0.5/    0.5/    0.5/    0.4/    0.4
:Little Muskegon River
MORM4       0.1/    0.1/    0.1/    0.1/    0.1/    0.1/    0.1
:Muskegon River
CROM4       1.2/    1.2/    1.1/    1.1/    1.0/    0.9/    0.9
NEWM4       1.3/    1.3/    1.2/    1.1/    1.1/    1.0/    1.0
BDGM4       1.3/    1.3/    1.2/    1.2/    1.1/    1.0/    1.0
.END


:Long-range probabilistic outlooks are issued near the end of
:the month throughout the year.

$$