Unless you live near the century-old Alki Point Lighthouse – or have been out on the water in the area this week – you probably haven’t noticed, but it’s shining less brightly than usual. Sarah, a lighthouse neighbor, noticed, and e-mailed us to ask about it. She feared it might be a permanent replacement, a dimmer LED-type light – and certainly, some lighthouses around the country have made that change, we discovered while researching. In this case, however, the U.S. Coast Guard tells WSB, it’s a temporary situation, one that’s even resulted in a special alert atop the USCG’s latest regional Local Notice to Mariners. According to the Coast Guard spokesperson we reached, there is a power problem at the lighthouse, so they had to put in a temporary light run by a DC battery, which means “the light can’t be energized enough to project a typical visibility range of 15 (nautical) miles – it is at five miles.” No estimate yet how long it will take to fix the problem so the full-power light can return to service. (2010 photo by Keri DeTore for WSB)