Hey Kevin!
Funny you should ask this, I took the pics of how to repair a flat on my mobile a couple of weeks ago but haven't made them into a walk-through yet.
You've probably ridden over a screw etc.
Slowly roll your bike like when you oil your chain and look at your tyre for an offending object.!
If you can find something obvious and small wedeged in your tyre then it's patch time.
Grab a tubeless tyre puncture repair kit and go to work on that baby.
Read the instructions off the net/off the packet first off to become familiar with what you'll have to do, basic steps are:
1. Locate and remove object.
2. Ream/clean out hole
3. Shove vulcanising glue-covered plug through hole
4.Cut off excess plug.
5. Use either compressed air bottles, bike pump or servo air pump to reinflate tyre.
6. DO NOT HOLD COMPRESSED AIR CANNISTERS if using them....... they'll stick to your hand
7. Ride and re-check pressure for first little while.
You can gimmie a call if you get stuck and need advice tomorrow.
