[BiglyCommentary]

We in houston (north) are used to snow that is soft and fragile. And it the way it fell was strange

You are used to snow only when the temps are somewhere around freezing and so the snow is wet. If it falls wet and then if the temp drops hard, it freezes very hard on the ground.

[Drago]

BiglyC. got it...several days with afternoon highs below freezing after a significant snowfall....very rare for Texas:

https://forecast.weather.gov/product.php?site=FWD&issuedby=DFW&product=CLI&format=CI&version=22&glossary=0