Folks in southern California will have an opportunity to see the last Titan IV launch out of Vandenberg in about an hour, at 11:04 AM Pacific time. If the sky is clear, go outside and look to the west. Spaceflightnow is blogging the countdown.

[Update a couple minutes later]

To clarify, it's the last Titan IV (or Titan anything) launch, period. It just happens to be launching out of Vandenberg. And with its retirement, Delta IV can take over as reigning pad queen.

[Update at 11 AM PDT]

I don't know if it was the Transterrestrialanche, or what, but SpaceFlightNow is now down.

[Update at 11:30 PDT]

Well, it apparently launched, but I didn't see it. There was a slight marine layer, and it may have obscured the view.

I saw it from my front porch. The neighbours all thought it was an earthquake. Remarkably, it was almost impossible to see the liquid stage burns from the 30 miles or so that my house is from VAFB, but the HCL cloud was very noticeable.

We were able to just barely see it in San Diego.

I heard from people in Mojave that they could see it and the clouds went away just in time.
Apparently the higher stages were a binoculars only object but the first stage was pretty visible.

So the way is clear now for SpaceX to launch from Vandenberg. Delta's not being known for throughing 'I Don't Wanna Go' fits and using their pads for roosts' ;)