Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 241637
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1237 PM EDT Friday, April 24, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
High pressure is hanging on for one more day providing quiet conditions
across the basin.  Showers and thunderstorms will move into the western basin
tonight as low pressure approaches from the west.  The low will cross the
region Saturday and Saturday night generating widespread precipitation in
the form of showers and thunderstorms. Heavy rain is anticipated. High
pressure will gradually build back in from the northwest late Sunday into
Monday.

...FLOOD POTENTIAL DISCUSSION...
Minor flooding remains across portions of southeast IL, southwest IN, and
western KY. Moderate flooding continues at two locations on the lower Green
River. River levels are currently falling. Potentially heavy rainfall this
weekend could bring another round of minor flooding to the western basin,
and possibly to parts of the southern Ohio Valley as well.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Light rain/snow fell in the northeast basin.  Amounts were generally around
0.10" or less.  The remainder of the basin was dry.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Widespread showers and thunderstorms are forecast Friday night, Saturday,
and into early Sunday. The heaviest amounts ranging from 1" to 1.75" are
forecast across IL, IN, and KY. Amounts of 0.25" to 1" are expected in TN,
WV, and OH. The upper Ohio Valley will see the lightest amounts generally
0.25" or less.

...RIVER BASINS IN FLOOD...
Points along the following river basins were in flood Friday morning:
 River Basin     Forecast Point   Flood Stage Latest Stg Tendency *
Ohio River       Mount Vernon          35         38.0    Falling
Ohio River       J T Myers Dam         37         41.5    Falling
Ohio River       Shawneetown           33         40.4    Falling
Ohio River       Golconda              40         42.7    Falling
Green River      Paradise             380        388.8    Falling
Green River      Calhoun               23         27.6    Falling
White River      Edwardsport           15         17.7    Falling
White River      Petersburg            16         18.3    Falling

Forecast precipitation graphics are available on the OHRFC Website
at the following address:  http://weather.gov/ohrfc/ForecastPrecipitation

* Tendency based on observed value and a 1-day forecast.
$$
jm



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