12/12/2021, 10:24 am EST

TRYING to Explain the December 10, 2021 Tornado Outbreak

A rare super-outbreak of violent tornadoes occurred December 10, 2021. There were two primary tornado "lines". One stretched from eastern Missouri to east-central Illinois while a second began in northeast Arkansas and reached southwest Kentucky. The second line featured (potentially) the longest path of one tornado on record. The violent weather was caused by interaction with the East Pacific tropics, Gulf of Mexico and cold snow-covered areas to the north and enhanced by a vigorous jet stream and low-level jet out of the western Gulf.
12/10/2021, 8:11 am EST

La Nina Peaks in January; El Nino risk late 2022.

La Nina 2021-22 peaks in January and fades to neutral phase during Q2/2022. El Nino risk is indicated for late 2022. The PDO regime which tends to run parallel to ENSO stays in the cool phase but is weaker for much of 2022. The North Atlantic warmth is likely to continue and be stronger than indicated by the analog forecast.
12/09/2021, 9:47 am EST

November 2021 Northern Hemisphere Snow Report

The November 2021 snow cover analysis by the Rutgers Snow Laboratory is complete. The data indicate the North America snow cover is lagging behind normal ranking 11th least snowy in the 56-year climatology. Meanwhile Eurasia is just-the-opposite ranking 9th snowiest since 1966.
12/08/2021, 3:47 pm EST

U.S. Autumn 2021 Ranked 3rd Warmest On Record

Meteorological autumn (SEP/OCT/NOV) 2021 ranked 3rd warmest on record. Almost the entire nation ranked in the MUCH ABOVE normal category including California, the West-central and Southwest U.S., all of the Great Plains and into the Northeast States. Only Alabama, Georgia and South Carolina ranked near normal.