National Weather Service United States Department of Commerce

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

Heavy rain from Tropical Storm Moke will begin to impact the Big Island today, risking life-threatening flooding and mudslides in windward and southeast areas. Severe thunderstorms are expected across the northern Rockies/Plains and northern Great Basin. Repeated storms and heavy rainfall may cause flash flooding from the Plains into the Lower MS Valley. Dangerous heat persists across the South. Read More >

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Last Map Update: Sun, Aug 23, 2026 at 2:00:27 pm CDT

Dangerous heat will return for portions of eastern Oklahoma and west-central Arkansas today, with heat index values ranging between 105-109 F, locally higher at times, expected in the advisory area this afternoon. The Heat Advisory will go into effect at noon today and will run through 8 PM.
Scattered to numerous thunderstorms are forecast Sunday night primarily across northeast Oklahoma and northwest Arkansas. A few storms may become severe with localized damaging winds the primary hazard.
High heat stress conditions will persist and will continue to impact outdoor activities for much of the next week.
Hot weather continues through the upcoming week. Periodic thunderstorm may occur for the next several days, but overall dry weather will continue. Fire weather conditions remain a daily concern due to drying fuels and periods of gusty winds.
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