Sentiment is still dollar negative, and it will take some very decent equity news to turn this around. The market needs something to hang its hat on.

The French riots are also not helping the euro,

I don't think the Fed are going to signal any kind of pause in rate increases next week. There's no reason the dollar can't continue to benefit from the rate advantage.

There's uncertainty about the floating voter.

It's the first key Fed speech since the scale of the devastation became apparent so that could be quite important if he is used as a vehicle to express Fed policy.

There is a good chance that the Fed won't raise rates on Sept. 20 but in doing so they are likely reaffirm that they will raise rates thereafter.