Week in Space Data, every Friday.

The whole ascent, low on the horizon. An hour from the base, Santa Barbara gets the full ascent for most Vandenberg launches, with the rocket climbing west-northwest over the Channel.
Liftoff itself is behind the curve of the Earth, but the rocket rises into view within seconds and you follow it for two to three minutes. Night and twilight launches are spectacular.
Clear western horizon over the ocean.
Ocean Avenue or Harris Grade Road for the classic view.
Making the trip? The full Vandenberg viewing guide has the pad-side spots, road closures and timing.
The whole ascent, low on the horizon. Santa Barbara is about 54 miles (87 km) from SLC-4E, Vandenberg SFB, bearing 286° (WNW). Liftoff itself is behind the curve of the Earth, but the rocket rises into view within seconds and you follow it for two to three minutes. Night and twilight launches are spectacular.
Face WNW (286°) toward Vandenberg. The rocket rises from that point on the horizon and arcs downrange: for Vandenberg launches that generally means south or southwest over the Pacific.
Two to three minutes for the first stage, sometimes longer at night when the second-stage plume is sunlit. Twilight launches, just after sunset or before sunrise, produce the biggest, longest-lasting displays.