National Weather Service United States Department of Commerce
WATER RESOURCES OUTLOOK NATIONAL WEATHER SERVICE OHIO RIVER FORECAST CENTER WILMINGTON OH 1000 AM EDT Wednesday September 29 2021 THE FOLLOWING IS THE 30-DAY WATER RESOURCES OUTLOOK FOR October ...WATER RESOURCES STREAMFLOW OUTLOOK... Streamflows are expected to average mostly above normal during October. ..................................................................... ...HYDROLOGIC FLOOD AND DROUGHT POTENTIAL... Flood potential will be near normal meaning minor flooding is possible There is no risk for drought in the Ohio Valley. ..................................................................... ...Hydrometeorlogical Review for September... Rainfall was 150-200 percent of normal across most of the Ohio Valley. Below normal rainfall occurred in northern Ohio,specifically in the Great Lakes drainage near Cleveland as well as the upper Muskingum watershed in northeast Ohio. The only flooding during September occurred along the Conemaugh River near Seward, PA, which reached significant flooding due to the remnants of Hurricane Ida. https://www.weather.gov/ohrfc/images/dynamic/latest30day.jpeg ...SOIL MOISTURE CONDITIONS... Extremely moist conditions exist in the central part of the basin from the Cumberland Basin northward thru the Kentucky watershed, the Whites in Indiana and the Maumee watershed in northern Indiana and northern Ohio. https://www.cpc.ncep.noaa.gov/soilmst/w.shtml ...STREAMFLOW CONDITIONS... During September...streamflows averaged above to much above normal across most of the Ohio River Basin. https://watermonitor.gov ..................................................................... ...ATMOSPHERIC TELECONNECTION AND OSCILLATION FORECASTS FOR October... ARCTIC OSCILLATION is not applicable during Autumn NORTH ATLANTIC OSCILLATION trending positive = wet PACIFIC/NORTH AMERICAN TELECONNECTION is not applicable during Autumn ENSO - EL NINO/LA NINA OSCILLATION developing La Nina = normal https://www.cpc.ncep.noaa.gov ..................................................................... ...Summary... NAO is predicting a wet October for the Ohio Valley leading to widespread above normal streamflows in the Ohio River Basin. ....................................................................... VISIT OUR WATER RESOURCES WEBSITE AT http://www.weather.gov/ohrfc/WRO IN ADDITION TO A 30-DAY STREAMFLOW OUTLOOK...YOU CAN ALSO OBTAIN A 60- AND 90-DAY OUTLOOK AT THE WEBSITE $$ wheeler