Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 101441
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
941 AM EST Sunday, December 10, 2017

...HYDROMETEOROLOGICAL DISCUSSION...
With cold air over the Ohio Valley for the next week, any precipitation falling
in the region is going to be in the form of snow.  Clipper system that
principally impacted the Ohio River forecast basin yesterday is moving off to
the east and outward.  In its wake the lake effect will really get churning for
the eastern lakefronts for the next 18 to 24 hours.  A weak system will scrape
along the northern fringe of the basin later in the day on Monday bringing some
light precipitation.  Northwest flow and cold weather will remain in the basin
until about next weekend when the flow turns more westerly and southwesterly.

...FLOOD POTENTIAL DISCUSSION...
River flows are currently at climatological minimums. Little if any liquid
precipitation or snowmelt is expected over the next week, keeping the potential
for any flooding very low.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Clipper system brought widespread light amounts of precipitation to nearly the
entirety of the Ohio river forecast basin.  Amounts were mainly a tenth or less,
however, a few areas of northern Indiana, southwest Ohio, and southern West
Virginia ran about a tenth to a quarter of an inch water equivalent.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
The lake effect should really pick up over the next 24 hours.  Therefore,
amounts of a half inch to an inch of water equivalent are forecast to fall in NW
PA and SW NY.  Elsewhere, a tenth or less is forecast for the far northern
fringes of the basin as well as the eastern highlands.

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

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

$$





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