Sorry about your truck, Judy, but I'm glad to hear you're okay. That looks like it was about to get a lot worse.
I second Gollnick's advice about the first rain after a dry period being very dangerous. I was once on a back road after it had stopped raining (moderate rain, but the first we had gotten for quite a while). It was night time, and I was the only one on the road, and as I was going around an unexpected curve I experienced loss of traction resulting in oversteer until I lost all traction, the back swung out, and I traveled sideways down the road. I cut the wheel and hit the brakes, and by some miracle stayed on the road, but I certainly learned a lesson about underestimating the slickness of roads.