National Weather Service United States Department of Commerce
WATER RESOURCES OUTLOOK NATIONAL WEATHER SERVICE OHIO RIVER FORECAST CENTER WILMINGTON OH 206 PM EDT Sunday September 30 2018 THE FOLLOWING IS THE 30-DAY WATER RESOURCES OUTLOOK FOR October ...WATER RESOURCES STREAMFLOW OUTLOOK... Streamflows are forecast to be above to much above average across the Ohio Valley during October. ..................................................................... ...HYDROLOGIC FLOOD AND DROUGHT POTENTIAL... Flood potential will be elevated during October. There is no potential for drought conditions during October given the wet conditions expected. ..................................................................... ...Hydrometeorological Conditions during September... Rainfall during September was 2 to as much as 5 times above normal for the Ohio River Basin. The remnants of Gordon and Florence contributed to what at times was excessive rainfall in the Ohio Valley. Significant flooding occurred at a number of points during September: Clay City on the Little Wabash, Shelbyville on the Big Blue River, West Union on the Ohio Brush Creek, Seward on the Conemaugh River, Sutersville on the Youghiogheny River, Galax on the New River, Glenville on the Little Kanawha River, Pittsburgh and Pike Island on the Ohio River. http://www.weather.gov/ohrfc/images/dynamic/latest30day.jpeg ...SOIL MOISTURE CONDITIONS... Soils are moist across the basin. http://www.cpc.noaa.gov/soilmst/w.shtml ...STREAMFLOW CONDITIONS... Streamflows averaged during September much above normal across the Ohio River Basin. http://watermonitor.gov ..................................................................... ...ATMOSPHERIC TELECONNECTION AND OSCILLATION FORECASTS FOR October... ARCTIC OSCILLATION positive = wet NORTH ATLANTIC OSCILLATION strong positive = very wet PACIFIC/NORTH AMERICAN TELECONNECTION strong negative = very wet ENSO - EL NINO/LA NINA OSCILLATION developing La Nina = dry http://www.cpc.noaa.gov ..................................................................... ...Summary... Atmospheric teleconnections/oscillations have a strong wet signal for October supporting above to much above streamflows across the Ohio Valley. ....................................................................... 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