Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 251722
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
122 PM EDT Wednesday, March 25, 2015

...HYDROMETEOROLOGICAL DISCUSSION...
A second wave of weather moved through the Ohio Valley late Tuesday night and
will exit to the east on Wednesday. Behind this a third system will move
through the Ohio Valley. Low pressure will move up the Ohio River early
Thursday morning and exit to the east by Thursday evening. Deeper moisture will
be associated with this system resulting in some heavy rainfall along the
vicinity of the main stem Ohio River. Some thunderstorms will be possible as the
system moves through the basin.

Mostly dry weather will return to the basin for the remainder of the week and
through the weekend.

The second of three rapid-fire low pressure systems was moving through the
western part of the Ohio Valley this afternoon.  This will continue to push
eastward through the area with most of the energy from this system moving into
the Great Lakes. The third system will push through Wednesday night through
Thursday.  This will be the most potent system, but mostly dry weather will
return for most of the weekend.

...FLOOD POTENTIAL DISCUSSION...
Ongoing flooding in the lower Ohio River basin will persist this week.  New
flooding is possible with the third event, but any that develops would be minor
in nature.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Rain fell across all but the far southern and northeastern Ohio Valley. Basin
averages were generally less than 0.25 inch, but some ranged from 0.50 to 1.00
inch in east central Illinois and central Indiana.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Precipitation is expected across the entire basin. Heaviest basin average
amounts will be along an axis from southern Illinois and far western Kentucky
up the Ohio River through southern Indiana and into southwestern and central
Ohio where they will range from 1.00 to 1.50 inches.

...RIVER BASINS IN FLOOD...
Points along the following river basins were in flood Wednesday morning:
 River Basin     Forecast Point   Flood Stage Latest Stg Tendency *
Ohio River       Newburgh              38         40.8    Falling
Ohio River       Mount Vernon          35         42.4    Falling
Ohio River       J T Myers Dam         37         46.0    Falling
Ohio River       Shawneetown           33         45.3    Falling
Ohio River       Golconda              40         46.7    Falling
Green River      Paradise             380        383.5    Steady
Green River      Calhoun               23         25.4    Falling
Wabash River     New Harmony           15         15.5    Falling
Little Wabash    Carmi                 27         31.3    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.
$$
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