Issued by NWS Ohio RFC
AGUS71 KTIR 101642
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1142 AM EST Tuesday, December 10, 2013
The disturbance that spread snow over much of the Ohio Valley and some rain
in the far southeast will continue to push eastward out of the basin on
Tuesday. High pressure will move across the southern Ohio Valley, keeping
conditions dry there, but lake effect snow showers will affect the typical
areas downwind of Lake Erie.
On Wednesday and Wednesday night a weak disturbance will pass across the
northern Ohio Valley. This will result in another batch of snow showers. This
will be followed by more high pressure, again keeping most of the basin dry
through Friday with the exception of local lake effect snows.
Temperatures will remain below normal through the mid-week, but will begin to
warm slightly by Friday. This in response to some southerly flow ahead of
a weather system that will pass through the region Friday night through
Saturday night. This will bring precipitation, though not in heavy amounts,
to the entire area, with rain in the south and a wintry mix in the north.
...FLOOD POTENTIAL DISCUSSION...
High flows on rivers in Kentucky continue, but levels are receding. The
potential for additional flooding is minimal with no significant
precipitation forecast this week. The lone exception is on the lower Ohio
River at Newburgh, IN later this week as water routes down.
...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Measurable precipitation fell over much of the Ohio Valley. Amounts were
generally light at less than 0.20 inch, though some basin averages in southern
West Virginia and far western Virginia were in the 0.50 inch range.
...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Precipitation is forecast over all but the southwestern quadrant of the Ohio
Valley. Basin averages will generally be light at less than 0.25 inch.
The exception will be liquid-equivalent basin average amounts of 0.25 to 0.90
inch in far northeastern Ohio, far northwestern Pennsylvania and far western
New York, due to lake effect snows expected there.
...RIVER BASINS IN FLOOD...
Points along the following river basins were in flood Tuesday morning:
River Basin Forecast Point Flood Stage Latest Stg Tendency *
Cumberland River Williamsburg 21 21.0 Falling
Detailed precipitation graphics and other maps are available on the HAS Support
Page at this web address: http://weather.gov/ohrfc/HAS
QPF from OHRFC, HPC, et al., can be seen at weather.gov/ohrfc/Forecast.php
* Tendency based on observed value and a 1-day forecast.