I'm opening this thread to post unusual weather occurrences, without suggesting to interprete them as pro or con climate change.
In Germany we just had the (probably) last surge of summer-like temperatures, it got unusually warm and sunny, up to 78F (25.5C) in some places, 75F (24C) at Dortmund, and 61F at night. So today was even above-average for a normal JULY(!) day. That's it now, autumn is coming in with rain, storm and probably 51F maximum on Wednesday...

I took this picture yesterday from one of the highest mountains in my region (2,750 feet, 60 miles southeast of Dortmund) during a hike; it shows the cloud front of the low pressure system approaching and ending the unusually warm temperatures. (The second pic shows the high-elevaton heath on that mountain).

[video:youtube]http://youtu.be/OWXoRSIxyIU[/video]

Appears to be a thorough explanation.

Regarding the outbreak of autumn: There we go, 75F just three days ago, but far away. Today the "Iron ore mountains" (Erzgebirge) in Saxony had the first snow, and the North Sea coast is facing a storm tide.
http://www.wetteronline.de/wetter-videos/2014-10-22-jv?cat=29&sort=date

Look at this difference of a restaurant in Seefeld, Tyrole - only four days between the two pictures!
https://fbcdn-sphotos-c-a.akamaihd.net/h...67ac876eaccde36

Now we are back to "heat records": Saturday will most probably be the second warmest November day in the last 30 years. Mediterranean air and up to 70F (21C) are announced for western parts of Germany. I'm planning to do this year's last 30 miles bike tour...

Outstanding record temperatures for November: My Stevenson screen recorded a maximum of 21.7 C / 71 F today. One official station in the Rhineland reached 75 F, an incredible temperature for November in Germany. Actually, it was an average August day today.

I realized that these record temperatures beat the afternoon temperatures of Tampa and Orlando on Saturday: 71F as opposed to 66F (due to the cold spill). That's really bizarre. I don't know if that ever happened before in a late autumn or winter month, when the average temperatures differ about 30-35 degrees F between Germany and Florida...

Some nice pictures of today's Foehn storm in Southern Bavaria and at Lake Constance, again raising temperatures up to 73F in Munich (while my region has dropped to 50F). The pic of the Foehn collapsing again in Innsbruck is interesting from a meteorological point of view.
http://www.wetteronline.de/fotostrecken/2014-11-04-fh?part=single

Today it was the coldest day since February or longer in my region. After the extremely mild November, it was what meteorologists call an 'ice day', the daily maximum remained at 29F (-1.5C), with a moderate Eastern wind. Absolutely not used to these temperatures any more. Luckily it will be over again tomorrow.