Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 041009
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
609 AM EDT Wednesday, May 4, 2016

...HYDROMETEOROLOGICAL DISCUSSION...
A closed low pressure system will be the main weather maker for the second half
of the work week as it traverses across the region from NW to SE.  This system
will usher in cooler air along with showers and embedded thunderstorms. The
vast majority of the region will see precipitation today with the threat moving
to the eastern basin by Thursday. A ridge moves in from the west late Friday
leading to a pleasant day Saturday before another system passes late Saturday
into Sunday. This system looks to bring another round of mainly light
precipitation to the Ohio Valley.

...FLOOD POTENTIAL DISCUSSION...
The potential for any new flooding from expected rainfall is low at this
point. Rivers in flood this morning will be allowed to recede even with
additional rain in the next 48 hours.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Only notable precipitation in today`s run would be in West Virginia where up to
one quarter of inch fell in the past 24 hours. Any other precipitation that
fell was mainly under one tenth of an inch and led to little if any responses
in the rivers.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
With a closed low pressure system passing through the region, some decent
precipitation is expected over the next 48 hours. The highest volume will be in
West Virginia as the system hangs up in the mountains. Locations in WV will see
mainly between 0.5 and 1 inch with localized higher amounts possible. Other
locations in the central and eastern basin will see between 0.25 and 0.50
inches. The western basin will see the lightest amounts with totals expected to
remain at or below 0.25 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 *
White River      Edwardsport           15         15.4    Steady
White River      Petersburg            16         16.9    Rising

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.
$$
Ryan Fliehman



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