From Greg Guzik:
Today's weather briefing indicates strong winds building over the weekend and lasting to mid-week next week. Our only near term launch opportunity will be dawn on Saturday, September 1. If we can not make that launch, then the next opportunity may not be until Wednesday or Thursday next week. Thus, we are now planning to complete the compatibility testing on Friday, August 31 and look at launching HASP at dawn on Saturday, September 1.
Tomorrow morning, CSBF will be launching a test of the 37 heavy balloon. You should be able to follow this launch from the CSBF website at http://www.csbf.nasa.gov/ . The scheduled launch time for the 37H is 7:30 am.