Freezing Arctic air lingered anomalously-far south on Thursday, thanks to a violent buckling of the jet stream. This has been the pattern for the majority of October, and the phenomenon is associated with the historically low solar activity we’re currently experiencing — the jet stream’s usual tight ‘zonal’ flow has lost strength and reverted to more of a wavy ‘meridional’ flow.
“A wave of Arctic air has infiltrated the United States this week, shattering record lows, and threatening as many as 70 [other record lows] through Halloween,” said Accuweather.
The forecast cold did indeed deliver, felling hundreds of all-time low temperature records — I’ve highlighted just a few of the standouts below:
Denver woke to its coldest Halloween morning on record on Thursday, with a low temperature of 7F (-13.9C).
The old record low was the 10F (-12.2C) set back in 1991.
Thursday continued a stretch of brutal cold in Denver, too — the city has now been below freezing for over 100 hours, since late Saturday night. The stretch has aided in driving Denver’s average temperature for the month down to 44.4F (6.9C) after Wednesday, which already makes it the Mile-High City’s sixth-coldest October on record, with a top-five finish a near certainty once Thursday’s record cold is factored in.
Colorado Springs, CO
Nearby Colorado Springs, as well as Pueblo, also sank to record cold temperatures on Halloween morning, according to the National Weather Service (NWS).
Colorado Springs cooled to 7F (-13.9C) at 3:55AM, breaking the old record of 10F (-12.2C) in 1991.
While Pueblo plunged to a bone-chilling -5F (-20.6C), busting the old record of 14F (-10C) again from 1991.
San Diego, CA
This month in San Diego came to a chilly end on Thursday. The city suffered the second-lowest temperature ever recorded in October, plus the coldest reading during the month in 48 years.
The mercury dipped to 44F (6.7C) shortly after 7AM at San Diego International Airport — the site of city’s official weather station. That reading broke the Halloween record of 45F (7.2C) set 125 years ago, in 1894. Only one October day in the city’s history has-ever been colder — Oct 30, 1971 with 43F (6.1C).
“We had really calm winds,” NWS meteorologist Casey Oswant said. “That’s important when were talking about really low temperatures. When things are calm, the cold air just kind of sits there and settles.” The air was also incredibly dry, with some of the lowest relative humidity readings in the region in years. Dry air cools off more easily than moist air.
Furthermore, San Diego’s average October low came in at 57.4F (14.2C) — more than 2F cooler than normal.
It was a record cold Halloween in many parts of Texas, too.
Lubbock airport, the City’s official weather record site (frustrating they’re often airports — see UHI effect for why) dropped to 16F (-8.9C) Thursday morning, a record low for Oct 31 and, even more impressively, a record for the entire month of October too — the previous records being the 20F (-6.7C) from Oct 31, 1991 and the 18F (-7.8C) from Oct 1993, respectively.
Real-world observations reveal the lower-latitudes are COOLING, and cooling fast.
Yes, a few far-northern areas like Alaska and the Arctic are warming slightly, but 1) no one lives up there so quite frankly, who cares, and 2) as NASA succinctly identify in their ‘Maunder Minimum Temperature Reconstruction Map’ (below), these regions are expected to warm during periods of global cooling, as are the North Atlantic, Iceland and the southern tip of Greenland:
And with regards to any Arctic sea ice melt —and the potential-consequences for sea levels— again, who cares…? At least 90% of the planet’s ice is safely locked up in Antarctica which, for as long as we can tell, has been steadily advancing, comfortably offsetting the comparatively tiny losses observed at its northern cousin.
Don’t be fooled by poisonous political ideologies.
The cold times are returning to the lower-latitudes –where us humans reside– in line with historically low solar activity.
Prepare for the COLD — grow your own.
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Grand Solar Minimum + Pole Shift
[Featured Image: Chris Dillmann]