Issued by NWS Ohio RFC
AGUS71 KTIR 041727
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1227 PM EST Wednesday, December 4, 2013
A warm front lifting northward through the basin will produce some
scattered light rain showers today, especially across the western half of
Tonight, a strong cold front will enter the western Ohio Valley. This feature
will cross the region Thursday before stalling over the southeast Ohio
Valley Thursday night. A couple strong waves of low pressure will ride
along the front, bringing heavy rainfall to southern and eastern
portions of the basin through early Saturday. Rain will turn over to snow
or a wintry mix along and north of the Ohio River.
There will be a brief break in the action early in the weekend before another
strong low pressure system moves through on Sunday. This system will
likely produce another round of heavy rain over the same area.
...FLOOD POTENTIAL DISCUSSION...
The flood potential will rise this week (mainly south of the Ohio River)
due to persistent, heavy rainfall forecast to begin Thursday and last
through Friday night before turning over to snow or ending altogether.
This system will serve to moisten up the soil, and the 2nd system expected
Sunday into Monday will be the event that produces the possibility of
widespread flooding. The greatest threat will be in KY, but parts of
southern/eastern OH, WV, and southwest PA could be affected as well.
...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Light showers produced less than 0.10" across the extreme northern part of
the basin. Isolated showers also resulted in under 0.05" for parts of PA,
WV, and KY. The majority of the basin was dry.
...72-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Heavy rain of 2" to 3" is forecast along an axis extending from middle TN,
up through KY, and into southern OH and western WV. Amounts taper off on
either side of this axis.
...RIVER BASINS IN FLOOD...
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