"Thundersnow can be found where there is relatively strong instability and abundant moisture above the surface," says the ...
In a typical summertime thunderstorm, warm, moist air rises rapidly into the atmosphere, where it hardens into ice crystals, ...
Texas is no stranger to a good thunderstorm. But lightning and thunderclaps mixed with sleet? That's a rarity.
It is the first time in 15 years the National Weather Service office has issued such an alert.
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