Gary McManus, State Climatologist — June took up the slack for May’s relatively tame severe weather output—at least by Oklahoma’s standards—with 10 tornadoes and two possible derechos that left over half of a million Oklahomans without power. While storms threatened the state throughout the month, the most intense severe weather was concentrated within just a few days from June 15–18 thanks to two powerful storms systems, both aided by an unusually strong jet stream overhead. The first disturbance kicked off several rounds of storms that impacted the southeastern half of the state and the Panhandle on the 15th. The storms…
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