TULSA, Oklahoma -- A flash flood watch has been issued through Monday evening for several northeastern Oklahoma counties including Tulsa, Rogers, Nowata, Ottawa, Haskell, Mayes, Muskogee, Wagoner, Washington, Adair, Cherokee, Craig, and Delaware.
The flash flood watch means rapidly rising water or flooding is possible.
The National Weather Service has issued a flood warning for Adair County for Sunday. The Illinois River near Watts was at 5.58 feet Saturday at 1 p.m., and flood stage is at 13 feet.
"The Illinois River near Watts is expected to rise above flood stage Sunday morning and continue to rise to near 13.4 feet," the weather alert states. The river is expected to fall below flood stage early Sunday afternoon.
Extreme turbulence will make the river unsafe for floating at 13 feet.
"Bottom line is that we will be in a very active pattern at least through Tuesday with periods of showers and embedded storms," said News On 6 meteorologist Dick Faurot.
"Not only will there be the potential for locally too much rain, but there will also be the potential for some severe storms."
A cool front will keep the chance of rain high through Easter Sunday.
"Some of these storms may become severe with winds/hail the primary threats," Faurot said. "An isolated tornado threat may also occur south of the frontal boundary in the warmer and more unstable air."
Flood advisories have also been issued for Cherokee and Delaware counties. In both counties, the flood advisory is for Flint Creek near Kansas. The water level is not expected to reach flood levels, however.
Flooding is the leading cause of weather-related deaths.