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Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
226 PM EDT Friday, July 3, 2009
...HYDROMETEOROLOGICAL DISCUSSION...
Showery weather will persist across the northeast basin today due to
residual moisture associated with the departing low pressure. The rest of
the Ohio Valley will be dry until a potent disturbance brings rain into
the western basin beginning Saturday morning. Widespread showers and
thunderstorms will move across the region Saturday. The activity will slowly
sag southward and will be confined to south of the Ohio River for Sunday.
Next week looks uneventful in a dry northwest flow pattern initially. As
the week unfolds, an upper level ridge should gradually build in providing
a noticeable warming trend and even lower chances of precipitation.
...FLOOD POTENTIAL DISCUSSION...
The threat of localized river flooding will increase this weekend, but
chances are still relatively slim. More likely, any flooding resulting from
this weekend's rainfall event will be flash flooding.
...24-HR OBSERVED PRECIPITATION USED FOR TODAY'S RIVER FORECASTS...
Showers were observed across the eastern half of the Ohio Valley. Amounts
were heaviest in northeast Ohio, western New York, western Pennsylvania,
and eastern West Virgina. Generally, between a quarter inch up to an inch
fell across these areas. A tenth of an inch or less fell across other parts
of the eastern basin, with the western half of the Ohio Valley was dry.
...24-HOUR FORECAST PRECIPITATION USED FOR TODAY'S RIVER FORECASTS...
The forecast calls for basin-average amounts around a tenth of an inch or
less across western New York, western Pennsylvania, northeast Ohio,
northeast West Virginia, far western Indiana, and eastern Illinois.
...RIVER BASINS IN FLOOD...
None.
Detailed precipitation graphics and other maps are available on the HAS Support
Page at this web address: http://weather.gov/ohrfc/HAS
$$
jm
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