Extended Streamflow Guidance
Issued by NWS
Issued by NWS
Versions:
1
323 FGUS63 KMSR 261725 ESGTIA MAQUOKETA..WAPSIPINICON..SKUNK RIVER BASINS LONG-RANGE PROBABILISTIC OUTLOOK NATIONAL WEATHER SERVICE NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 1124 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 -------- ----- ----- ----- : ---- ---- ---- ---- ---- ---- :Maquoketa River MCHI4 14.0 17.0 20.0 <5 <5 <5 <5 <5 <5 MAQI4 24.0 26.0 28.5 10 8 8 6 <5 <5 :Wapsipinicon River IDPI4 12.0 13.0 15.0 <5 <5 <5 <5 <5 <5 ANSI4 14.5 18.0 21.5 <5 <5 <5 <5 <5 <5 DEWI4 11.0 11.5 12.5 16 22 13 15 5 10 :South Skunk River AMEI4 12.5 16.0 16.5 <5 <5 <5 <5 <5 <5 :Ioway Creek AMWI4 10.0 14.0 15.5 <5 <5 <5 <5 <5 <5 :South Skunk River AESI4 21.5 23.5 24.5 <5 <5 <5 <5 <5 <5 CFXI4 18.0 19.0 21.0 <5 <5 <5 <5 <5 <5 OOAI4 24.5 28.5 30.0 <5 <5 <5 <5 <5 <5 :North Skunk River SIGI4 16.0 18.0 21.0 7 10 <5 <5 <5 <5 :Skunk River AGSI4 15.0 17.0 20.0 <5 <5 <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 /DC2411261724/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% : --- --- --- --- --- --- --- :Maquoketa River MCHI4 3.8/ 4.1/ 5.3/ 6.3/ 7.5/ 9.1/ 11.4 MAQI4 10.6/ 11.3/ 12.3/ 14.0/ 15.8/ 23.1/ 26.7 :Wapsipinicon River IDPI4 4.9/ 4.9/ 5.0/ 5.5/ 6.0/ 6.7/ 7.3 ANSI4 5.1/ 5.1/ 5.7/ 6.7/ 7.9/ 9.1/ 11.2 DEWI4 6.3/ 7.1/ 7.6/ 8.9/ 10.4/ 11.8/ 12.6 :South Skunk River AMEI4 2.9/ 3.0/ 3.9/ 4.7/ 5.5/ 6.5/ 7.4 :Ioway Creek AMWI4 1.3/ 1.7/ 2.2/ 3.0/ 3.7/ 4.2/ 4.8 :South Skunk River AESI4 9.9/ 10.4/ 11.1/ 12.3/ 13.8/ 14.5/ 16.4 CFXI4 7.3/ 7.5/ 8.1/ 9.1/ 10.5/ 11.2/ 13.4 OOAI4 8.6/ 8.7/ 9.5/ 10.7/ 12.3/ 14.6/ 16.7 :North Skunk River SIGI4 6.3/ 7.0/ 8.5/ 12.1/ 13.4/ 15.1/ 16.5 :Skunk River AGSI4 1.8/ 2.6/ 4.2/ 7.1/ 9.0/ 10.6/ 12.0 .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 /DC2411261724/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% : --- --- --- --- --- --- --- :Maquoketa River MCHI4 0.1/ 0.1/ 0.1/ 0.1/ 0.1/ 0.1/ 0.1 MAQI4 0.6/ 0.6/ 0.5/ 0.5/ 0.4/ 0.4/ 0.4 :Wapsipinicon River IDPI4 0.3/ 0.3/ 0.2/ 0.2/ 0.2/ 0.2/ 0.2 ANSI4 0.5/ 0.5/ 0.4/ 0.4/ 0.4/ 0.4/ 0.3 DEWI4 0.8/ 0.7/ 0.7/ 0.7/ 0.6/ 0.6/ 0.5 :South Skunk River AMEI4 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0 :Ioway Creek AMWI4 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0 :South Skunk River AESI4 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0 CFXI4 0.1/ 0.1/ 0.1/ 0.0/ 0.0/ 0.0/ 0.0 OOAI4 0.3/ 0.3/ 0.3/ 0.2/ 0.2/ 0.2/ 0.2 :North Skunk River SIGI4 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0/ 0.0 :Skunk River AGSI4 0.6/ 0.6/ 0.5/ 0.4/ 0.4/ 0.3/ 0.3 .END :Long-range probabilistic outlooks are issued near the end of :the month throughout the year. $$