You can also Google job growth and migration information and it's readily available. 

I will expect this to only continue as PHX was named Realtor.com’s #19 out of 20 top housing markets with Tucson being #21.Arizona continues to be an attractive market with positive net migration YOY of an average of 268 people every single day!

The migration is real. 

Look at migration patterns, towns where big companies are moving to, cities with colleges and hospital campuses, cities along major freeways that are close to other big cities and major destinations, etc etc. 

The next 2 months are very predictable, forcasting the next half year is possible, because real estate moves so slow and you have a lot of leading indicators - but beyond that it is speculation and I never go on record with that, even though I think about it quite a bit, and here are some ideas that are "a little bit out there":- inflation may take 2-3 years, maybe longer, for the FED to correct - total compounded devaluation could be 30-50%- home prices will continue to increase at rate of inflation and then some extra for suuply/demand- national home prices trends could split, prices could flatten or declien on the coast and possibly double in the midwest- climate migration will increase (I have clients every month that cite water shortage/ floods/fire/smoke..)- the midwest will see the biggest boom in 50 years- condo's will become the new starter home as SF get too expensive- rents will continue to increase in amount and volume- homeownership rates will decline- social unrest will increase as the wealth gap continues to widen and political extremeism increases (this could get bad)I would not go on record predicting any of this, but in the back of my mind I think they are possibilities.

The reason I am ok with an 8% in PHX is there is a lot of migration to PHX, specifically businesses.

The spider migration may even indicate a termite infestation... 

I am looking at landlord friendly laws, low property taxes, low median home prices, positive population growth/migration, low unemployment rates, diversity of employment, good schools, low crime.

Not sure what you mean by mass migration but I am in SA, TX so that is a good thing for us since everyone is coming here.3) Inflation is finally upon us to some extent but again depending on your strategy not too scary.

Its growth results in a positive net migration pattern in these areas, where more people are coming in than out.Job growth is a leading factor in the growth of a city.