Since Tyrus and another P2, Austin, asked about Chehalem today, here my non-flight report:
I sat on launch for an hour plus, Looked like a good direction and base speed when I arrived at 2 - SSE about 6-7mph. This stayed fairly consistent. There was no rain but I could see verga coming from several upwind cells. Big and small patches mostly moving westerly. A mild gust front, lasting maybe a minute, hit about 20 minutes into my wait. Not a good omen. A second and even stronger gust front hit about an hour in so I left.