Extreme Temperature Diary-November 8, 2018/ Topic: Early November Trends/More October 2018 Climatology

Thursday November 8th… 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)😊.

Early November Trends/More October 2018 Climatology

We are now going into the second week of November so it is time to look at temperature trends for the new month. I typically post record count updates around the 10th of each month for all to peruse. Each month I have started the habit of presenting my  “NCEI Record Count Scoreboard,” which I will show again on this post. I’m like a laundry machine on wash, rinse, repeat mode.😉

Let’s look at that scoreboard of counts of National Center for Environmental Information daily high maximum and low minimum records (updated through 11/04/2018): https://www.ncdc.noaa.gov/cdo-web/datatools/records 

For this data set all monthly ratios of  > 10 to 1 DHMX to DLMN or > 10 to 1 DLMN to DHMX are in bold type. The rankings are for the lower 48 states with the warmest ranking since 1895 of average temperatures being 124 and 1 being the coldest as of 2018. Blue colors represent cold months and red warm. Those months with counts close to a 1 to 1 ratio of highs to lows are colored black. Boldly colored months, such as May 2018, have ratios of more than 10 to 1 daily record highs to lows or lows to highs, and are either historically hot or cold. October 2018 had a near 1 to 1 ratio of record DHMX to DLMN individual counts, so the color I used for this month was black, although there were 112 more warm reports than cold. NCEI has processed October data across the country, determining that the lower 48 had its 44th coldest month since 1895, also added to the chart. The number 44 falls within the middle third of rankings (1-41, 42-83, 84-124), so is also colored black.

So far there have not been that many reports of records across the country for November, but we have seen 69 DHMX mostly associated with the West Coast ridge. The return of the dipole is causing cold air to pool in Canada and move southward into the U.S. such that we are seeing lots of blues on this chart:

Most of the rest of the world is above average for temps, painted in orange hues as depicted by the Climate Analyzer chart, a clear sign of climate change. What we see in November stems over from what we saw average wise in October 2018:

The planet had it’s fourth warmest October in record according to Copernicus from Europe. We can see, though that most of North America was cooler than average looking again at the tweeted chart:

Major news broke later today. The dipole ridge/trough configuration over North America the last couple of months has caused tragic and deadly fire weather conditions for California yet again:


Looking at the surface pressure panel from this morning one can definitely see why we have a growing fire concern:

High pressure is building into the Great Basin area causing dry easterly winds to blow across California.


Here is more climate and weather news from Thursday:

(As usual, this will be a fluid post in which more information gets added during the day as it crosses my radar, crediting all who have put it on-line. Items will be archived on this site for posterity.)

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The Climate Guy

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