Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 211501
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1101 AM EDT Friday, July 21, 2017

...HYDROMETEOROLOGICAL DISCUSSION...
Showers and storms were moving from the northwestern to the southeastern Ohio
Valley on Friday. This same axis of unstable conditions will lift northward
tonight and act as a focus for new storm activity over the northeastern
quadrant of the Ohio Valley on Saturday. With an excessively moist airmass in
place, heavy rain and flash flooding will continue to be a possibility.
A slightly cooler, drier airmass should arrive around Tuesday next week
possibly providing a few days respite, both from the heat and the
thunderstorms.

...FLOOD POTENTIAL DISCUSSION...
All flooding has ended in the Ohio Valley. While new flooding is not forecast,
there is an elevated risk for some minor flooding, especially across northern
Indiana and northern Ohio where conditions are moist and more storm activity is
expected.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Showers and storms affected primarily the northern half of the Ohio Valley. In
the northeast rainfall amounts were fairly modest, but across portions of
northern and central Indiana, basin averages ranged from 0.50 to nearly 2.00
inches.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Rain is forecast across all but the far southwest Ohio Valley. Basin average
amounts will be highest in Ohio, western Pennsylvania and West Virginia where
they will range from 1.00 to nearly 2.00 inches.

...RIVER BASINS IN FLOOD...
None.

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

$$
Link Crawford




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