Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 201640
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1140 AM EST Thursday, November 20, 2014

...HYDROMETEOROLOGICAL DISCUSSION...
Cold air continues to spill into the Ohio Valley today resulting in more
lake effect snow in the far northeast basin, but little observable weather
elsewhere. High pressure will strengthen into Friday. As the high shifts
east Friday night and Saturday, warmer conditions will return as well as
some shower activity.  A strong low pressure system will bring more
significant rainfall on Sunday.

...FLOOD POTENTIAL DISCUSSION...
The potential for flooding is low through the first half of the weekend.
Beginning Sunday and lasting into early next week, the flood threat will
be elevated as warmer conditions arrive along with widespread rain.  The
greatest risk for flooding will be across the northern and western Ohio
Valley.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Light snow showers fell over much of the northern Ohio Valley, but in many
places was too light to measure. Snow coming off of Lake Erie continued to
be prolific.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Lake effect snow will continue to affect the northeast Ohio Valley through
Day 1, but will finally begin dwindling on Friday. Another 0.50" to 2.00" of
liquid equivalent is forecast in the heaviest bands. Light rain will move
into the northwest basin Friday night. Under 0.10" is forecast.

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

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

$$
jm




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