Issued by NWS Ohio RFC
AGUS71 KTIR 201650
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1250 PM EDT Thursday, April 20, 2017
A cold front will enter the Ohio Valley this afternoon and push southeast
through the basin, reaching the southern basin by Friday morning. The front
will stall for a day or so until an area of strong low pressure moves through
the TN Valley this weekend. This may result in widespread, heavy rainfall for
the southern half of the Ohio Valley. Rainfall amounts of 2-4" are possible
for parts of KY, TN, WV, and western VA. The disturbance will begin to pull
away from the region Sunday, with much of next week shaping up to be
relatively quiet with moderating temperatures.
...FLOOD POTENTIAL DISCUSSION...
With a couple potentially heavy rain events the next few days, the
potential for flooding will increase. The highest risk for flooding will
mainly be across the western and southern Ohio Valley.
...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Heaviest rain was in northern Ohio where 1" to 2" fell. Showers in other
parts of the northern Ohio Valley produced 0.25" to 1.00" of rain. Much of
the middle section of the basin was dry, while more shower activity south
of the Ohio River produced widely variable amounts from a few hundredths up
to 1" in spots.
...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Precipitation is forecast basin-wide. The northern half of the region can
expect 0.25" to 1", while the southern half should see anywhere from 0.50" to
2". Thunderstorm activity could result in locally heavier amounts. Rainfall
will continue beyond the 48-hr forecast window, with aforementioned totals of
2 to 4" before ending late Sunday.
...RIVER BASINS IN FLOOD...
Forecast precipitation graphics are available on the OHRFC Website
at the following address: http://weather.gov/ohrfc/ForecastPrecipitation