I expect another high temperature record will fall on Thursday as the intense ridge of high pressure remains over us. A valley high of about 104 degrees Thursday will set another temperature record, and will likely produce an isolated thunderstorm or two through Friday. As we head into the weekend, a deeper flow of moisture from the south will produce more cloudiness, slightly cooler temperatures, and more numerous and intense thunderstorms. It is the type of pattern that could result in flash flooding situations in isolated areas, and if you are spending the weekend out of doors, you should pay attention to the conditions and watch for any warnings that might occur.
Kim wondered if closing an indoor pool during a thunderstorm was necessary. Lightning is very funny stuff, and it’s kind of like dealing with sharks. Once you think you have it all figured out, it turns around and bites you. The problem with being in an inside swimming pool isn’t that you will be a direct target for a lightning bolt, but you could be on an indirect pathway for the electricity (some 300 million volts or so) to get into the ground. Pools (indoor and outdoor) have extensive plumbing and wiring attached to them, and a hit on the building could potentially send a jolt through those pathways back into the pool. Is it a likely occurrence? Maybe not, but a large steel building does make an attractive target. More tomorrow.