The Wikipedia article of the day for October 4, 2017 is 2005 Azores subtropical storm.
The 2005 Azores subtropical storm was the nineteenth nameable storm of that year’s record-breaking Atlantic hurricane season. It developed on October 4 in the eastern Atlantic Ocean out of a low-pressure area that gained subtropical characteristics. Crossing over the Azores later that day, it became extratropical again the following day. No damage or fatalities were reported. The storm was not officially named by the US National Hurricane Center as it was classified at the time as a non-tropical low, partly due to its unusual location and wide wind field. Months after the hurricane season, when the Center was performing its annual review of the season and its named storms, forecasters Jack Beven and Eric Blake identified a well-defined center convecting around a warm core—the hallmark of a subtropical storm. After being absorbed into a cold front, the system went on to become Hurricane Vince. Weakening to a tropical depression, this storm became the first tropical system to make landfall on the Iberian Peninsula since the 1842 Spain hurricane.