National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Tulsa, OK

Weather Forecast Office

NWS Forecast Office Tulsa, OK

Weather.gov > Tulsa, OK
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Last Map Update: Thu, Jun 18, 2026 at 3:48:38 am CDT

Heat Advisory Today
Severe Outlook Thursday
Severe Outlook Friday
Heavy Rain Potential Returns
Forecast Summary
Heat index values up to 105 degrees are forecast across southeast Oklahoma this afternoon and a Heat Advisory is in effect from 1 to 7 PM. Please be sure to take frequent breaks when outdoors today and stay hydrated.
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Isolated to scattered thunderstorms will be possible across eastern Oklahoma and northwest Arkansas during the day Thursday. Any storms that develop may become strong to severe and produce large hail and damaging winds. Additional thunderstorms are expected to develop Thursday night, especially along and south of I-40, with a continued marginal risk for severe weather.
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Thunderstorms are forecast to be ongoing Friday morning, especially along and south of I-40. Additional development is possible into the afternoon hours across southeast Oklahoma before storms exit the area. There is a marginal risk of severe weather with large hail, damaging winds, and heavy rainfall being the main threats.
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There is a marginal to slight Risk (5-15% chance) of excessive rainfall Wednesday through Friday. Slow moving and training thunderstorms may produce areas of flash flooding.
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Graphic depicts a 6-day forecast for select cities in eastern Oklahoma and western Arkansas, as well as details on hazards for the first 3 days and key weather messages.
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