Wow, what a nice autumn preview today was. In Nashville the morning low was 62 and the afternoon high only 82…nice for August, several degrees below the average for both. The fall equinox this year is Thursday, September 22 at 9:21 AM.
A large area of high pressure is centered over the Ohio Valley, that’s the reason for today’s crisp air. Dew points have been in the 50s for many today. That’s the comfortable zone. The overnight lows will again be in the upper 50s and low 60s across Middle Tennessee. Tomorrow afternoon you’ll feel a difference in the temperatures, they will rise to the upper 80s…hot, but the humidity still remains in check.
Deep moisture is just to the south. As the high shifts east over the next few days it will tap into that moisture and humidity here will be on the rise again. Expect the dew points to go from the 60s Wednesday to the 70s by Thursday. With the added a moisture there will be the possibility of isolated thunderstorms each day.
If you are ready for the change of the season, you only have a month left. But if you have set your sights on the big solar eclipse, you have a year to wait. It’s going to be a big deal, the total eclipse happens August 21, 2017. This graphic of the eclipse from Sky and Telescope magazine shows the 8,600 mile path that passes directly across the continental U.S. It will offer up to 2.7 minutes of totality. The blue lines parallel to the dark track indicate the degree of partial eclipse to be seen elsewhere in the Americas. The red lines show Universal Times.
A total solar eclipse occurs when the Moon passes directly between the Sun and Earth. This type of eclipse occurs somewhere on Earth about every 18 months on average. But a total eclipse hasn’t been observed from the continental United States since February 26, 1979. That’s why it’s such a big deal. During the totality of the eclipse the Sun’s brilliant disk is fully covered by the moon, the sky will turn dark, similar to twilight, so the brightest planets and stars become visible.
Tennessee and Kentucky are right in the path of the eclipse. I’m looking forward to it.
Join me tonight on Channel 4 News at 10pm for a weather update.