When it gets too cramped in the shop vac, the queen will leave with part of the hive after new queen cells have been capped in the original hive. A new queen (or queens)will hatch, mate and the hive will continue. here's a link to some california associations.

Here is a link that might be useful: http://www.beesource.com/forums/showthread.php?t=214846

Thank you Tony! I will check it out! The bee's also have less shade due to a neighbor cutting down a tree that same day ( a week after the queen split) The same swirling chaos continued each day the temp. was 78-80 degree's. Can I provide shade using a standing patio umbrella? That area is going to be so hot soon. I can do it at night. What do you think?

Often in the later part of the afternoon,younger bees will leave the hive and buzz around in front to orient themselves to the outside of the hive. These are a lot of the new forager population that have never been out of the hive before. If they start to get too hot,they will beard on the outside of the hive until it cools down.

http://forum.beemaster.com/index.php/topic,18277.0.html