National Weather Service United States Department of Commerce
WATER RESOURCES OUTLOOK NATIONAL WEATHER SERVICE OHIO RIVER FORECAST CENTER WILMINGTON OH 1034 AM EDT Friday March 30 2018 THE FOLLOWING IS THE 30-DAY WATER RESOURCES OUTLOOK FOR THE MONTH OF APRIL .WATER RESOURCES STREAMFLOW OUTLOOK... Streamflows across western Pennsylvania and southwestern New York are forecast to be near normal. Across the rest of the basin, above normal streamflows are forecast. ..................................................................... .HYDROLOGIC FLOOD AND DROUGHT POTENTIAL... Drought conditions are not expected. Flood potential is above normal. ..................................................................... .PAST 30 DAY HYDROLOGICAL AND METEOROLOGICAL REVIEW... RAINFALL DEPARTURES... In March, 5 to 7 inches of rain fell across areas of southern Ohio, southern Indiana, southwest Illinois, middle Tennessee and Kentucky (150 to 300 percent of normal). 2 to 5 inches of rain fell across the remainder of the region (up to 200 percent of normal). http://www.weather.gov/ohrfc/images/dynamic/latest30day.jpeg SOIL MOISTURE CONDITIONS... Soil moisture conditions are in the 70th to the 95th percentile across the Ohio Valley. http://www.cpc.noaa.gov/soilmst/w.shtml STREAMFLOW CONDITIONS... Streamflows are currently much above normal with pockets of high across southern Indiana, southwestern and northeastern Ohio, West Virginia, Kentucky, middle Tennessee and southwestern Pennsylvania. Flows are normal to above normal elsewhere. http://watermonitor.gov ..................................................................... .ATMOSPHERIC TELECONNECTION AND OSCILLATION FORECASTS FOR APRIL... TELECONNECTION/OSCILLATION PATTERN ARCTIC OSCILLATION Negative/neutral = Normal NORTH ATLANTIC OSCILLATION Neutral = Normal PACIFIC/NORTH AMERICAN TELECONNECTION Negative to Neutral= normal to above normal ENSO - EL NINO/LA NINA OSCILLATION La Nina = Wetter than average http://www.cpc.noaa.gov ..................................................................... .TECHNICAL DISCUSSION... With the last 2 months being considerably wet, flood potential is above normal for most of the Ohio Valley for April. The upper end of the the Ohio is forecast to be near normal. Models are indicating a wet start to the month of April. Temperatures will be below normal. Overall, April will be a cool and damp month. ....................................................................... 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 $$