Another wave of cooler air heads in for the first half of the weekend. Temperatures Saturday will start off near-average, in the upper 30s to around 40°:
But we won’t warm up too much, topping out near 60°:
We’re now exactly six inches below our normal year-to-date rainfall:
By the end of the 7-day forecast, it will have been exactly two months since Nashville officially had a one-inch rain event…it’s been 225 days for Chattanooga! (One inch of rain is an arbitrary-but-useful threshold to identify a “soaking rain.”) That’s a record for Chattanooga, but not for Nashville…not even close. The longest streak of “days with less than 1 inch of rain” was in 1871 and 1872 — 260 straight days! That’s at the very beginning of Nashville record-keeping, so I’m a little skeptical as to the accuracy of that data…the second-longest streak was in 1956, when 219 days went by without a one-inch rainfall. One more bit of trivia — earlier this year, we went 94 straight days without a one-inch soaking rain.
Last batch of nerd-links for the week…
- The weather should be clear Sunday night, so look up and catch a glimpse of the full moon — it’s the biggest “supermoon” we’ll see for 18 years.
- After the strong El Nino episode in the Pacific last winter, a weak La Nina is now officially here for the next few months. (I took a look at La Nina’s potential impact on our winter weather in this post from last month.)
- Our chilly weather the past couple of mornings isn’t out of the ordinary at all for this time of the year…nationwide, there are just no signs of winter on the horizon.
- One of the most inhospitable places on Earth by any measure is Antarctica — but it could be habitable in the next couple of centuries.
- The international community remains strongly committed to fighting climate change — with or without the President-elect’s cooperation.
- Sounds like science fiction, but it’s real: a machine that produces drinking water using just sunlight and air.
- The “Orion” spacecraft is supposed to be NASA’s next manned vehicle, but the space agency is now considering alternatives.
- Astronomers had always assumed that our solar system was “normal” — rocky planets close in to the star, larger gaseous planets farther out. Now that assumption is being challenged by a flood of new evidence.
- Scientists are in the process of adjusting the fundamental ways we measure things — the new units based on basic properties of the universe will make measurements more precise.
- Security issues are the obvious hurdle to clear…but when will be able to vote online? How about voting via smartphone?
- Lastly, a break from science-nerdiness to history-nerdiness: a look at the similarities between the elections of Donald Trump and Andrew Jackson.