Update, 11:20 p.m.: The weather service issued a flash flood warning for Osage and Pawnee counties until 1:15 a.m. Flash flooding is expected to follow up to 3 inches of rain in the region.
Update, 10:30 p.m.: Storms continue moving across northeastern Oklahoma with threats from damaging wind gusts and heavy rain. Localized flooding is a concern, according to the weather service.
Update, 9:50 p.m.: The severe thunderstorm warning for Osage County expired.
Update, 8:15 p.m.: A line of storms moving across Oklahoma is expected to expand across the northeastern region throughout Friday evening.
Thunderstorm threats are expected through at least 10:30 p.m. Friday. Accompanying the risk of thunderstorms are threats of quarter-sized hail, winds up to 70 mph and torrential rainfall, according to the weather service.
Rainfall up to 2 inches in some areas is forecast.
Update, 7:59 p.m.: The National Weather Service issued a severe thunderstorm warning for Osage County, including Pawhuska, Hominy and Cleveland. High winds up to 70 mph and nickel-sized hail is also possible.
3:00 p.m. Gov. Kevin Stitt declares a state of emergency for all 77 Oklahoma counties impacted by flooding and severe storms.
2:15 p.m. A tornado watch is in effect through 10 p.m. affecting Osage, Washington, Nowata and Pawnee counties.
10 a.m. A flood warning is in effect for Washington County until further notice as the Caney River is almost a foot above flood stage.
The Caney River at Bartlesville is forecast to rise to 15 feet late Friday. The river will remain near 15 feet through Sunday morning and then begin to slowly fall. With the level at 15 feet, the old Highway 75 crossing or Tuxedo Boulevard in
Bartlesville becomes covered by water, according to NWS Tulsa. Moderate flooding occurs at Johnston Park and over farmlands between Bartlesville and Ochelata.
Update (9:30 a.m.): A flash flood warning is in effect for Osage and Pawnee counties through 11:30 a.m.
Thunderstorms producing heavy rain moved into the area about 8:30 a.m., with 1-2 inches of rain, which could lead to flash flooding on already saturated soils.
More storms are in the forecast for northeast Oklahoma on Friday afternoon, with a limited risk of severity and showers continuing overnight.
According to the National Weather Service in Tulsa, any storm that develops has the potential to become severe, due to strong instability, and may produce large hail and damaging winds.
Heavy rainfall is also be possible, especially northwest of Interstate 44, with a warm and humid airmass in place and expected to remain unstable through the weekend.
Thunderstorm potential remains on Saturday and Sunday, with a break Monday before the risk for severe storms rises Tuesday through Thursday as a cold front approaches the area, and an upper level storm system moves across the central Plains.
Forecast through next week
Friday: A 20% chance of showers and thunderstorms after 1 p.m. Mostly cloudy, with a high near 86. South wind 10 to 20 mph, with gusts as high as 25 mph.
Friday night: A 40% chance of showers and thunderstorms, mainly after 1 a.m. Mostly cloudy, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday: A 20% chance of showers and thunderstorms. Mostly cloudy, with a high near 85. South wind around 15 mph, with gusts as high as 20 mph.
Saturday night: A 20% chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 10 to 15 mph.
Sunday: A 20% chance of showers and thunderstorms before 1 p.m. Partly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday night: A 20% chance of showers and thunderstorms before 1 a.m. Mostly cloudy, with a low around 71. South wind around 10 mph.
Memorial Day: Partly sunny, high near 85. South wind 10 to 15 mph, gusts as high as 20 mph.
Monday night: Partly cloudy, low around 71. South wind around 15 mph, gusts as high as 20 mph.
Tuesday: A 50% chance of showers and thunderstorms after 1 p.m. Partly sunny, with a high near 84. South wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday night: Showers and thunderstorms likely, mainly before 1 a.m. Mostly cloudy, with a low around 63. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.