Steve
Penultimate Amazing
I suspect it's because blizzards simply aren't as well-formed as hurricanes/tropical storms are - instead of formed eyes, expected wind patterns, and so on, it's just a bunch of precipitation and maybe wind.
(Doesn't mean people don't come up with names for blizzards on their own - my fave's still Snowtorious B.I.G.)
Actually a blizzard is wind that moves enough snow through the air to seriously reduce visibility. It may involve precipitation as falling snow but it can also occur without precipitation by moving large volumes of snow already on the ground.