I was at the NWC in Norman when the storm started to look interesting. I headed up to the observation deck to check it out. Here is a wide view of the storm. Overall, it looked very outflow dominant to me, but was kicking out some nice lightning.
As the storm approached Norman, the NWS issued the Tornado Warning, and when the sirens sounded and they made us go to shelter in the basement. Here is last photo I took was at 3:56pm (my EXIF shows 4:06PM, but I found my time on my camera to be 10 minutes fast when I got home and started comparing photos with my wife). This photo is looking WNW from the obs deck at the National Weather Center. I just missed the beginning of the tornado.
My wife was at Sarkeys Tower on the 7th floor at this time, and stayed in her office a little longer. She took this pic at 4:03PM looking WSW from the west side of the building. You can see the Physical Science Center on the left side of this photo. At this time, the tornado was about halfway between Lindsey/36th and Lindsey and I35. Sorry for the poor quality of this photo, the flash fired and reflected in the window and she had to go to the tornado shelter before she could take another photo. I
heavily contrast enhanced the photo. Her camera's time was also off, I found when we got home, by about 20 minutes.
Overall an easy chase, as we traveled 0 miles. Wish I could have seen it from the obs deck (dont know if it was obscured by rain from the NWC).