December Month-In-Review
Dec was a historical month with a record number of severe weather reports, 9th longest tornado track on record, record number of tornadoes, first Dec tornado in MN history, the most mesoscale discussions issued in a day. Below is a not so brief summary.
Dec was a historical month with a record number of severe weather reports, 9th longest tornado track on record, record number of tornadoes, first Dec tornado in MN history, the most mesoscale discussions issued in a day. Below is a not so brief summary.
December 2021 had the most preliminary severe weather reports (1261) since the preliminary report database began in 2000. This is more than double the previous record of 645 from 2002. 
There were 193 surveyed tornadoes (so far) in December 2021. This is almost double the prior record of 97 from 2002. There were 1700 miles of tornado during the month.
December 2021 had 23 watches which was the 7th most December watches since the watch database began in 1970.
A tornado tracked 166 miles across Tennessee and Kentucky on December 10th. This is the 9th longest tornado path on record. There were over 850 total miles of path length on December 10-11.
43 total mesoscale discussions were issued in a 24 hour day on December 10th-11th (12Z-12Z). This exceeds the record (42) previously set on April 27, 2011.
There were 64 preliminary hurricane force wind gusts from the preliminary storm reports from December 15. This is 11 more than the previous record number of significant wind gusts when 53 occurred on August 10, 2020.
Minnesota had never had a recorded tornado in the state during the month of December until December 15, 2021. By the end of the day they had 17 tornadoes.
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