Issued by NWS Ohio RFC
AGUS71 KTIR 191545
Ohio River Basin Hydrometeorological Discussion
Ohio River Forecast Center, Wilmington, Ohio
1145 AM EDT Sunday, May 19, 2013
Some lingering showers and isolated thunderstorms persist across the southern
and eastern portions of the basin from an exiting upper level low. By Monday
morning, these should mainly be done as the low will have fully moved off to the
east. The first half of this week will see strong southerly flow and warm
temperatures as a strong frontal boundary will hang well off to the west.
Midweek this front will finally begin to cut into the basin, bringing widespread
showers and thunderstorms. Once that moves through, high pressure will take its
place and leave most of the Ohio valley dry for the weekend.
...FLOOD POTENTIAL DISCUSSION...
No flooding is occurring at this time. While there are significant chances for
rain across the middle of the Ohio Valley mid-next week, it is
expected to be scattered enough that additional river flooding is not
forecast. Some local or flash flooding is possible.
...24-HR OBSERVED PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Widespread areas of scattered showers with isolated thunderstorms fell across
areas of the central and southern basin. Isolated amounts of up to an inch fell
across middle TN and West Virginia, but most locations were closer to a quarter
of an inch or less.
...48-HR FORECAST PRECIPITATION USED IN TODAY`S RIVER FORECASTS...
Day 1 (8am EDT Sunday - 8am EDT Monday):
Contours max out at just over a half inch along the southeast fringes of the
Ohio River forecast basin. Amounts taper quickly as one heads further northwest
into the basin.
Day 2 (8am EDT Monday - 8am EDT Tuesday):
Quarter of an inch forecast across the northwest and northern peripheries out
ahead of the frontal boundary in the plains. Most of the basin is forecast dry
or only a few hundredths.
...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