I should start by saying that I live and have lived in Washington, IL for a long time.
I am OK. My house is intact, my parents place is intact. I can't say the same for the families who lived about 2 miles from me, about a mile and three-quarters from my childhood home and parents' place. I was there overnight - my father acquired a generator from work, and gave us heat and some limited power through the night. Up until 30 minutes ago, my section of town had no power, and very sketchy cell phone service, hence why I've been out of contact. I'm locked down here as well...the police and national guard are limiting travel, and if you get out, you're not getting back in easily - you have to live here or be a press member to get in today.
I would strongly recommend, if you can spare it, just sending a few dollars to the American Red Cross for disaster relief. Specify that you want to donate to Central Illinois Tornado relief.
As for what I experienced...
It was actually fairly sunny, and unseasonably warm that morning. Clouds were moving oddly fast, though, and some severe weather had been predicted. A bit before I logged out of instant messaging, I started hearing thunder, and checked a radar app I have. I noticed there was a tornado warning for my area. The cell involved was ridiculously small, not the usual long lines of storms you think of associated with these kinds of events. Not long after, sirens started going off, and...well, something told me to take cover. I...kind of did, heading to the lower level when the sirens stopped. I...stumbled around for a bit, noting what I thought was nearly constant thunder. Above my head, I was literally on the edge of the storm cloud, a...bizarre bluish-black cloud to my northeast, clear skies to the southwest, and this...rumbling of thunder. I'd only realize hours after that what I had actually heard was the tornado. The sirens came back on for the second and last time, and at 11:45, I lost all power, and the sirens shut off.
There was that eerie quiet. I went outside to ask a neighbor what happened, and that's when I started to get an inkling of what we were dealing with. He said that the town to the east was a mess, and there was massive destruction - one of my neighbors in my building is a police officer. I immediately (once cell phone service was...enabled...) called my parents and headed to their place, spending the night with my family and two of my brother's friends, one of whose grandparents lost their house.
We've only had one death and seventy-five injuries confirmed to be related to this massive storm, which took out an apartment complex, a golf course, and most of a new subdivision. Many people were at church when the storm struck, and therefore weren't at home, making for a much lower death and injury toll than there may have been.
The scene is...bizarre. It's one of those things you hope will never happen so close to you. I have only seen pictures and they send chills down my spine. Preliminary ratings peg the tornado at EF4, and current analisys peg it at only 10 mi/h off of an EF5, the highest possible rating. This was a monster, and I am so glad more people weren't hurt.