July has been a little below normal on temperatures thus far, and we do not have any excessive heat coming for the next two weeks, as I am expecting temperatures to stay below normal through July 25.
I do not see the rain letting up much either, with scattered showers and thunderstorms expected around the county and Middle Tennessee just about every day, with heavy showers from time to time.
We have plenty of summer weather remaining, but thus far, there is no sign of that terrible western heat wave moving into this part of the country. The temperature hit 130 last weekend in Death Valley, California.
Looking back on July 9, 1988, Lebanon topped out at 105 degrees. On July 12, 1980, an incredible heat wave gripped Middle Tennessee with temperatures as hot as 108 degrees. On July 13, 2004, thunderstorm winds gust to 67 mph in Nashville, and damage was reported in every Middle Tennessee county.
Did you know that heat lightning is actually lightning from a distant thunderstorm? Back before radar came along, folks would see lightning flashing in the sky on a hot night, and they would think, “Well, there are no clouds, so I guess it is heat lightning.” When you see it, there is a thunderstorm somewhere. Lightning can be seen from a storm 100 miles away on a clear summer night. The old wives’ tale that a hot, humid night can generate lightning without a thunderstorm called heat lighting is exactly that – a meteorological myth.
Heat lightning is just normal lightning from a thunderstorm too far away for you to hear thunder.
Steve Norris is a weather guru. Send him an email anytime with questions or comments to email@example.com.