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Moke Impacts Hawaii; Severe Thunderstorms and Heavy Rainfall from the Great Basin to the Plains

Heavy rain and gusty winds from Tropical Storm Moke will impact the Big Island into Monday, risking life-threatening flooding and mudslides in windward and southeast areas. Severe thunderstorms are expected across the northern Rockies/Plains and northern Great Basin. Dangerous heat persists across the Southern Plains and Lower Mississippi Valley, building further into the Southwest by midweek. Read More >

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Last Map Update: Wed, Aug 26, 2026 at 7:16:35 am CDT

Scattered thunderstorms are forecast Wednesday afternoon and into the evening, with a marginal to slight risk for severe weather, primarily across far eastern Oklahoma and western Arkansas. Locally damaging winds to 70 mph will be the main threat, with marginally severe hail possible as well.
Scattered thunderstorm development is expected by mid afternoon across parts of eastern Oklahoma and western Arkansas. Storms may become strong to severe, particularly across far eastern Oklahoma and western Arkansas. The most likely timing for severe weather across the area is between 4-10 PM. Storms dissipate and exit the area by late evening/early tonight.
Hot & humid conditions persist across SE OK & W-Central AR today. Cooler conditions likely Thursday-Saturday before dangerous heat returns by early next week. Heat stress will likely impact daytime outdoor activities. Drink plenty of water and take breaks in shade when spending time outdoors.
Temperatures mostly above normal with continued periods of locally high heat stress to continue through Wednesday. The possible exception being around active thunderstorm activity. Periods of low to medium rain chances continue through Wednesday night. Areas of localized fire weather concerns will persist until widespread beneficial rainfall occurs.
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