Cool Junes For Pakistan, Fiji And The United States
June 2023 in Pakistan closed with an average temperature of 31.26C, which is a substantial -1.5C below the 1991-2020 average. The country also endured its second-wettest June in 63 years.
A host of low temperature records were broken, a handful of which I’ve listed below:
Lasbella’s low of 18C (64.4F) broke a monthly record it had held since 1934, Bahawal Nagar’s 17.5C (63.5F) broke a cold record from 1985, while Bannu, Cherat, Faisalabad, Garhi Dupatta, Rawalpindi, Islamabad, Jehlum, Kotli, Lahore AP (and city), Multan, Murree, Mizaffarabad, Peshawar, and Sialkot were among the other Pakistan locales to break long-standing low temperature benchmarks for June.
Traversing the planet a little here (some 8,000 miles to southeast), Fiji is another nation to have endured a colder-than-average June of 2023.
Last month finished -0.51C below the multidecadal normal, despite pockets of record heat being detected — and this is exactly what our obfuscating friends at legacy media outlets don’t understand/want you to know:
A wavy (‘meridional’) jet stream flow (the result of low solar activity) will, at times, deliver bursts of heat to a particular region, as Tropical warmth is transported atypically-far north (in the NH). However, the overall temperature come the end of the month/season/year will typically be close to the average, cooler than the norm in more cases than not (particularly in recent years).
We saw exactly this in the United States…
A lot was made of Texas’ heatwave last month –it was hot, I won’t argue that– however, the data reveal that June across the United States as a whole was an anomalously-cool month.
As per the lower Tropospheric temperatures, as measured by NOAA/ASMU satellites, the Lower 48 finished -0.36C below the 30-year average. A brief burst of heat encased Texas for a week-or-so as a meridional jet stream flow pulled Tropical air unusually-far north, but to the northeast and northwest Arctic air was being dragged unusually-far south:
And as the data show, the cold won out: June was substantially colder than the multidecadal norm.
Briefly (more here)…
Low solar activity impacts Earth’s climate via a number of different mechanisms. The most notable of which is the reduction of energy entering the jet streams. This reverts the jets’ standard straight ZONAL flow to a weak and wavy MERIDIONAL one:
In times of meridional flow, a region’s weather is determined by which ‘side’ of the stream it’s on. If it is located ‘above’ the stream (in the NH) then it’s in for a spell of unseasonably cold conditions–open to influxes of Arctic air; while conversely, if the locale is ‘under’ the jet stream then it is set for anomalously hot conditions–subject to air masses dragged up from the tropics.
A wavy jet stream flow increases the prevalence of swings between extremes, too. That is to say, intense bursts of heat will linger in one area, while a teeth-chattering chill will dominate nearby. These regions are also then open to flipping on a dime.
Taking events in the U.S. these past few weeks, Texas is one locale to have demonstrated a textbook swing, from blistering heat at the end of June to anomalous summer chills in early July; while to the west, California –for example– has flipped from persistent cold to now a hit of above-average warmth.
This isn’t ‘catastrophic climate change’, this is a meridional jet stream in action.
Record Lows Sweep Northern U.S.
Continuing June’s cooling trend, the first week of July has seen many northern U.S. residents switch off the A/C and crank up the heating.
According to the National Weather Service in Cheyenne, several locations across Wyoming, Montana, the Dakotas, Nebraska, and Iowa –including Cheyenne itself– set new record low highs this week.
Cheyenne topped out at just 57F (13.9C) on Wednesday — a full 3F colder than the previous record low-max for July 5, and a whopping 26F colder than normal; Iowa’s Sioux City logged a low of 48F (8.9C) on Thursday — felling the previous record of 50F (10F) set back in 1997; and Norfolk, too, posted a record low, of 50F (10F) — busting the benchmark of 51F set in 2006.
These are just a three of the more than 30+ records to have fallen this week, with a number also felled north of the border, in Canada–including Moose Jaw breaking a long-standing low set 105-years ago, in 1918.
The latest U.S. states to set new cold records include South Dakota, Nebraska, Minnesota, Iowa, and also Missouri and Oklahoma to the south. Below is a pocket of records to have fallen during the hour of 11:00 UTC on July 6 only:
That’ll be it for this week.
Thank you very much for reading, and for supporting my efforts.
See you again Monday.