Hydrometeorological Discussion
Issued by NWS Ohio RFC

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AGUS71 KTIR 201448
HMDTIR
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1048 AM EDT Saturday, May 20, 2017

...HYDROMETEOROLOGICAL DISCUSSION...
A stalled frontal boundary draped over the Ohio Valley will keep the
weather unsettled today. Scattered showers and thunderstorms are forecast
across the region.  A low pressure system approaching from the west could
produce significant rainfall totals across the western basin today before
spreading into the central/eastern Ohio Valley tonight and Sunday.  We will
see a break in the action Monday as high pressure builds in, but stormy
conditions return around midweek.

...FLOOD POTENTIAL DISCUSSION...
Some western basin locations remain above flood stage from previous rainfall
events. Additional possibly heavy rainfall expected over the next day or so
could cause additional flooding concerns, especially in the western basin
where soils are still fairly saturated and rivers are already elevated.

...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Showers and thunderstorms were scattered throughout much of the Ohio
Valley. Parts of IN, OH, KY, and southwest WV were hardest hit, with
several areas receiving 1" to 3" and even heavier amounts in very localized
spots.

...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Showers and thunderstorms are forecast basin-wide. Amounts will mostly
range from 0.50" to 2.00" although locally heavier amounts are possible in
thunderstorms.

...RIVER BASINS IN FLOOD...
Points along the following river basins were in flood Saturday morning:
 River Basin     Forecast Point   Flood Stage Latest Stg Tendency *
Wabash River     Riverton              15         17.8    Falling
Wabash River     Vincennes             16         16.5    Falling
Wabash River     Mount Carmel          19         19.4    Falling
Wabash River     New Harmony           15         17.4    Falling
Little Wabash Ri Carmi                 27         32.4    Falling

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

* Tendency based on observed value and a 1-day forecast.
$$
jm




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