Severe Thunderstorms With 60 mph Winds Hit Ohio, South Dakota and Arizona
The National Weather Service has issued multiple severe thunderstorm warnings across the United States, with 60 mph wind gusts threatening damage to roofs, siding and trees in Ohio, South Dakota and Arizona, while flash flooding is occurring in Pennsylvania and a Red Flag Warning is in effect for fire weather in Idaho.
Active Severe Thunderstorm Warnings
A severe thunderstorm warning covers Athens County in Ohio where a line of storms extends from near Lake Hope State Park to 10 miles west of McArthur. [1] Another severe thunderstorm warning applies to northern Campbell County in South Dakota until 1145 PM CDT with the storm located over Pollock or 10 miles northwest of Herreid. [2] A third severe thunderstorm warning is active for Maricopa County in Arizona until 915 PM MST with the storm near Wickenburg. [3] These warnings identify 60 mph wind gusts as the primary hazard in Ohio and Arizona while South Dakota also includes half dollar size hail. [1] [2] [3] Radar indicated the source of the information for each warning. [1] [2] [3]
Ohio Thunderstorm Threat
At 1144 PM EDT a severe thunderstorm was located along a line extending from near Lake Hope State Park to 10 miles west of McArthur and was moving east at 35 mph. [1] The hazard consists of 60 mph wind gusts. [1] Locations impacted include McArthur, Lake Hope State Park, Zaleski, Allensville, and Creola. [1] The expected impact includes damage to roofs, siding, and trees. [1] The warning was issued by the National Weather Service for Athens County, Ohio. [1]
South Dakota and Arizona Warnings
In northern Campbell County, South Dakota, a severe thunderstorm was located over Pollock or 10 miles northwest of Herreid at 1041 PM CDT and was moving east at 20 mph. [2] The hazards include 60 mph wind gusts and half dollar size hail. [2] Expected impacts cover hail damage to vehicles along with wind damage to roofs, siding, and trees. [2] In Maricopa County, Arizona, a severe thunderstorm was located near Wickenburg at 840 PM MST and was moving south at 15 mph. [3] The hazard consists of 60 mph wind gusts. [3] Locations impacted include Wickenburg and US Highway 60 between mile markers 99 and 118. [3] The expected impact includes damage to roofs, siding, and trees. [3]
Flash Flooding in Pennsylvania
At 1104 PM EDT Doppler radar and automated rain gauges indicated that thunderstorms have produced between 2 and 5 inches of rain in Warren, Pennsylvania. [5] Additional rainfall amounts up to 1 inch are possible in the warned area as another thunderstorm is moving toward the warned area. [5] Flash flooding is ongoing or expected to begin shortly. [5] The hazard is flash flooding caused by thunderstorms. [5] The source of the information is radar and automated gauges. [5] The impact includes flash flooding of small creeks and streams, urban areas, highways, streets and underp. [5]
Red Flag Fire Weather Alert in Idaho
A Red Flag Warning is in effect from noon to 9 PM MDT Sunday for the East Salmon River Mountains and Salmon National Forest. [4] The affected area covers Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. [4] Winds are west 5 to 15 mph with gusts up to 30 mph. [4] Relative humidity is as low as 12 percent. [4] The impacts state that wind reaching these speeds and humidity drier than 15 percent can result in rapid. [4]
Safety and Impact Guidance
The severe thunderstorm in Athens County, Ohio, carries 60 mph wind gusts that can produce damage to roofs, siding, and trees while moving east at 35 mph through McArthur, Lake Hope State Park, Zaleski, Allensville, and Creola. [1] The severe thunderstorm in northern Campbell County, South Dakota, carries 60 mph wind gusts and half dollar size hail that can produce hail damage to vehicles and wind damage to roofs, siding, and trees while moving east at 20 mph near Pollock and Herreid. [2] The severe thunderstorm in Maricopa County, Arizona, carries 60 mph wind gusts that can produce damage to roofs, siding, and trees while moving south at 15 mph near Wickenburg and affecting US Highway 60 between mile markers 99 and 118. [3] Thunderstorms have already produced between 2 and 5 inches of rain in Warren, Pennsylvania, with up to an additional inch possible, leading to ongoing or imminent flash flooding of small creeks and streams, urban areas, highways, streets and underp. [5] The Red Flag Warning covers the East Salmon River Mountains and Salmon National Forest in Idaho from noon to 9 PM MDT Sunday with west winds 5 to 15 mph gusting to 30 mph and relative humidity as low as 12 percent. [4] These conditions create potential for rapid fire spread in the warned zones. [4]
What to watch next: Additional rainfall up to 1 inch remains possible in the Warren, Pennsylvania, area as another thunderstorm moves toward the warned zone while the Red Flag Warning continues until 9 PM MDT Sunday in the East Salmon River Mountains and Salmon National Forest.
