NWS Forecast Office Tulsa, OK

A low pressure system lifting into the Plains over the weekend will increase thunderstorm chances across eastern OK and northwest AR. A slight risk of severe weather exists near and west of the I-35 corridor and a marginal risk east to the I-49 corridor as the low pressure system moves over the region.

Multiple rounds of rain and thunderstorms are expected today into Sunday for eastern Oklahoma and northwest Arkansas. A marginal risk of excessive rainfall that could lead to localized flood potential exists for areas west of a line from Coffeyville to Okemah on Saturday and areawide on Sunday.

A Marginal Risk for severe weather exists Monday afternoon and evening for parts of eastern Oklahoma along and west of a line from Tahlequah to Antlers. There are questions about whether or not storms will develop, but if they do, the atmosphere supports mainly a large hail and damaging wind threat.

A second area of low pressure is forecast to move into the region early to mid week. Both instability and ample amounts of moisture from the weekend look to remain over the region. A 15 percent chance of severe weather exists across areas west of a line from Fayetteville to Antlers on Tuesday and areawide Wednesday. Potential for higher end severe weather threats exists. Details will continue to be updated through the several days.

Multiple rounds of additional rain and thunderstorms are expected Tuesday and Wednesday for eastern Oklahoma and northwest Arkansas. A marginal risk of excessive rainfall that could lead to localized flood potential exists areawide both days. In areas that see multiple rounds of heavy rain in preceding days, quicker onset flash flooding could occur.

Unsettled weather returns Friday into early next week.