It's an annual event where the local NWS bureaus have ham stations set up to make contacts on HF, VHF, UHF, repeaters, APRS, you-name-it.
This year, I'm taking my DMR radio to work up a few digital contacts if possible. I got permission from the folks at Vol-Net to use their system, so hopefully we'll be able to make it work.
I'll attempt to tweet out my frequency as I go along (@k4hsm). Sometimes I'll be scanning around, other times I may call CQ on a dead frequency. I typically get on repeaters more than HF, but that changes based on band conditions.
So do be looking for me tonight. SKYWARN Recognition Day goes for 24 hours from 7PM-7PM ET (0000-2400Z) so if I'm not around, be listening for WX4MRX all day, because someone should be there!