A launch from Vandenberg, seen from Brownsville

From Brownsville, Vandenberg SFB is about 2415 km away to the WNW (compass bearing 300°). A night or twilight launch is unlikely to see; a daytime launch is unlikely to see. Face WNW shortly after liftoff and watch low on the horizon — the rocket climbs as it heads downrange.

You're not watching the rocket itself — beyond a few km the vehicle is far too small to see. What's visible is the engine plume at 65–100+ km altitude: at night a brilliant moving flame (routinely seen 300+ km away), at dawn/dusk a sunlit "jellyfish" cloud that has been documented 800+ km away, in daytime only a white contrail with much shorter range. Cloud cover, local horizon and trajectory all matter.

Nearby cities

For exact launch times and live trajectories, check the provider's stream. How this estimate works.