Extended Streamflow Guidance
Issued by NWS
Issued by NWS
Versions:
1
835
FGUS63 KMSR 261131
ESGMIS
MISSISSIPPI RIVER FROM LOCK AND DAM 20 AT CANTON..MISSOURI
TO CHESTER..ILLINOIS
LONG-RANGE PROBABILISTIC OUTLOOK
NATIONAL WEATHER SERVICE
NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN
630 AM CDT THU JUN 26 2025
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: 06/30/2025 - 09/28/2025
: 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
-------- ----- ----- ----- : ---- ---- ---- ---- ---- ----
:Mississippi River
CANM7 15.0 20.0 25.0 28 21 <5 7 <5 <5
LGRM7 17.0 23.0 25.0 13 12 <5 <5 <5 <5
UINI2 19.0 22.0 26.0 15 14 7 9 <5 <5
QLDI2 18.0 21.0 25.0 13 14 6 9 <5 <5
HNNM7 17.0 22.0 24.0 31 20 <5 6 <5 <5
SVRM7 16.0 20.0 24.0 37 26 9 11 <5 <5
LUSM7 15.0 20.0 25.0 50 33 7 10 <5 <5
CLKM7 25.0 31.0 33.0 50 33 7 10 <5 <5
CAGM7 26.0 30.0 34.0 42 32 9 11 <5 <5
GRFI2 20.0 24.0 29.0 18 26 <5 9 <5 <5
ALOI2 21.0 24.0 31.0 <5 6 <5 <5 <5 <5
ALNI2 21.0 29.0 34.0 30 28 6 8 <5 5
EADM7 30.0 35.0 40.0 10 24 7 9 <5 6
HRCM7 26.0 32.0 37.0 18 26 7 10 5 6
CHSI2 27.0 35.0 40.0 37 34 8 12 5 7
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 0630 Z DH12 /DC2506261130/DVD90/HGVFZXT/HGVFZX9/HGVFZXH
.B1 /HGVFZX5/HGVFZXG/HGVFZX1/HGVFZXF
:
: Chance of Exceeding Stages (ft) at Specific Locations
: Valid Period: 06/30/2025 - 09/28/2025
:
: 95% 90% 75% 50% 25% 10% 5%
: --- --- --- --- --- --- ---
:Mississippi River
CANM7 12.5/ 12.6/ 12.7/ 13.3/ 15.3/ 17.3/ 19.6
LGRM7 13.4/ 13.5/ 13.6/ 14.2/ 16.2/ 18.2/ 20.5
UINI2 15.4/ 15.5/ 15.6/ 16.2/ 18.2/ 20.6/ 23.3
QLDI2 14.1/ 14.2/ 14.3/ 15.1/ 17.1/ 19.3/ 22.0
HNNM7 14.8/ 14.8/ 14.9/ 15.6/ 17.3/ 19.1/ 21.4
SVRM7 13.6/ 13.6/ 13.8/ 14.8/ 17.2/ 19.3/ 22.0
LUSM7 13.7/ 13.8/ 14.0/ 15.0/ 17.2/ 19.1/ 21.2
CLKM7 23.5/ 23.5/ 23.8/ 25.0/ 27.5/ 29.6/ 31.8
CAGM7 23.6/ 23.7/ 23.9/ 25.1/ 27.6/ 29.7/ 31.8
GRFI2 15.9/ 15.9/ 15.9/ 16.2/ 18.1/ 21.4/ 23.1
ALOI2 18.6/ 18.9/ 19.4/ 19.4/ 19.4/ 19.4/ 19.4
ALNI2 12.9/ 13.1/ 14.5/ 16.8/ 21.7/ 22.9/ 31.5
EADM7 12.7/ 13.4/ 17.1/ 21.4/ 27.1/ 29.4/ 39.4
HRCM7 10.8/ 11.6/ 15.2/ 19.4/ 25.0/ 27.2/ 37.1
CHSI2 15.7/ 16.3/ 19.3/ 22.9/ 28.7/ 30.4/ 40.1
.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 0630 Z DH12 /DC2506261130/DVD90/QIVFZNT/QIVFZN9/QIVFZNH
.B1 /QIVFZN5/QIVFZNG/QIVFZN1/QIVFZNF
:
: Chance of Falling Below Flows (kcfs) at Specific Locations
: Valid Period: 06/30/2025 - 09/28/2025
:
: 95% 90% 75% 50% 25% 10% 5%
: --- --- --- --- --- --- ---
:Mississippi River
CANM7 88.1/ 61.3/ 49.3/ 39.8/ 35.0/ 30.2/ 27.8
UINI2 88.6/ 61.4/ 49.5/ 40.2/ 35.3/ 30.4/ 27.9
QLDI2 88.6/ 61.4/ 49.5/ 40.2/ 35.3/ 30.4/ 27.9
HNNM7 89.0/ 61.5/ 49.8/ 40.6/ 35.4/ 30.5/ 28.0
SVRM7 89.3/ 61.6/ 50.0/ 40.6/ 35.5/ 30.6/ 28.1
LUSM7 91.0/ 63.2/ 51.0/ 42.4/ 35.8/ 30.8/ 28.3
CLKM7 91.5/ 63.8/ 51.1/ 42.4/ 35.9/ 30.9/ 28.4
CAGM7 92.0/ 64.2/ 51.1/ 42.5/ 35.9/ 31.1/ 28.4
EADM7 263.3/ 219.3/ 144.8/ 110.7/ 91.7/ 78.5/ 77.2
CHSI2 270.0/ 223.1/ 146.5/ 112.8/ 93.3/ 80.1/ 79.0
.END
:Long-range probabilistic outlooks are issued near the end of
:the month throughout the year.
$$