Extreme Temperature Diary-April 20, 2018/ Topic: Current Strange Global Weather

Friday April 20th… Dear Diary. The main purpose of this ongoing post will be to track United States extreme or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials)😊. Here is today’s main climate change related topic:

Current Global Strange Weather

Climate is merely the average of weather events over days, months and years. If a region has a stable climate inhabitants come to expect certain types of seasonal weather events over and over during a lifetime. Should climate start to change long timers will begin to complain of strange or odd weather. Worse, reliable weather for growing traditional crops will become a atypical perhaps leading to food scarcity. “Strange weather” has been occurring across the planet during April 2018, and I’m not writing about a rare tornado in one’s home town, or dry spell. Anyone with any weather sense can see how wacky the weather is getting. Today I thought that I would make a list of some current weather events so that you can be the judge.

First let’s drop by Europe, which has gone from the deep freeze to record warmth in just a few weeks:

Etienne Kapikian, a meteorologist with MeteoFrance, tweeted that Paris’s preliminary high of 83.7 degrees (28.7 Celsius) ranked as the fifth-highest April temperature there in 146 years of measurements.

Several locations in France set all-time April highs, MeteoFrance tweeted.

Here is a peak at the mega-ridge over Europe from this morning:


Here are some “Extreme Temperatures” or records set in France from yesterday 4/19/2018:

29.2°C Troyes, 27.8 25/4/2007
28.3 Roissy, 27.8 25/4/2007
28.0 Creil, 27.9 29/4/1955
27.9 Toussus-le-Noble, 27.1 15/4/2015
27.2 Nancy-Ochey, 27.1 25/4/2007
27.2 Rouen, 26.4 15/4/2015
26.7 Evreux, 26.1 29/4/2010
26.7 Deauville, 25.9 29/4/1955

Ah people are enjoying summer in Paris in April donning shorts watching the Seine, which might be a good thing chalked up to global warming, but highly irregular.

Tx moyenne nationale de 26.6°C (et Tmoy 18.6°C) : 2e journée d’avril la plus chaude depuis l’après-guerre derrière le 30/4/2005 (26.9) !
Quelques records mensuels au nord (jusqu’à 31.1°C à St-Maur ) et même en Corse !

Translated from French by

An exceptionally hot 20 April, Tmax + 6 to + 14 °c/norm Tx national average of 26.6 °c (and Tmoy 18.6 °c): 2nd day of April the hottest since the post-war period behind the 30/4/2005 (26.9)!
A few monthly records in the north (up to 31.1 °c in St-Maur ) and even in Corsica!

It’s not only warm to hot in Europe, but in portions of South America as well:

Durante abril el otoño prácticamente no se ha hecho sentir y las temperaturas se mantienen muy por encima del promedio normal para la época. + en

Translated from Spanish by

ARGENTINA crosses the hottest April of the last 60 years. 🌡️🌡️🍂 during April autumn has practically not been felt and temperatures are kept well above the normal average for the time. + In

Next let’s turn back to this country and tornado alley. Hmm, I suppose that the lack of tornadoes is a good thing, but still rather odd. The jet simply has been too far north of the southern Plains for tornadic development:

No have been reported in Oklahoma in 2018, nearing a record wait:

I believe that the Oklahoma fires are related to the absence of strong storms in that state:
The Upper Midwest like Europe during late winter has been in an ice box, cold even by their standards for mid-spring that I contend is due to odd upper latitude warm blocks, which are beginning to finally break down:


Here’s a look at the last North American block configuration with a warm ridge over Hudson Bay and cold closed low (last winter storm) moving through the Midwest:
Once again we see a plethora of upper lows on this chart.
And finally for this round of reports we continue to see ice extent, which is part of arctic weather, at record low values:

Compared to previous decades:
—> ~680,000 km² less the 2000s average
—> ~1,130,000 km² less the 1990s average
—> ~1,710,000 km² less the 1980s average

From time to time I will be offering more “strange global weather” reports. Please drop me a note if you have an event for posting.
I may add relevant ET information if some crosses my radar later today.


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The Climate Guy

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