11/02/2022, 5:03 am EDT

Great Plains Severe Storms, Brazil Rainfall Pattern Change and New Cold Eurasia

Important pattern changes are ahead including arrival of heavy rain and severe weather in the Great Plains the next few days while in Brazil the prevailing wet pattern across Southeast Brazil shifts to the northeast part of the nation. Europe remains very warm, but an evolving cold air mass centered on the Caspian Sea area will broaden in the extended-range and ease the Europe warmth and cause a cold regime to develop in the Black Sea region. In Australia, the extreme rainfall pattern has eased.
11/01/2022, 5:24 am EDT

North Atlantic Warm Hole Re-Emerging

During the past 2-4 weeks waters south and southeast of Greenland have cooled by 2-5C. Return of the semi-permanent (2013-2022) North Atlantic warm hole (NAWH) is generating. The cooler SSTA change foreshadows an evolving potent upper-level low-pressure trough south of Greenland for the first half of November.
10/28/2022, 8:43 am EDT

Awesome Influence of Marine Heat Wave NEP22A on North America Climate

The 2022 marine heat wave (MHW) in the Northeast Pacific (NEP22A) is a MAJOR player on modulating northern hemisphere upper air patterns. NEP22A became the 4th warmest MHW in the Northeast Pacific of the past 40 years during early-to-mid autumn. As usual, the attendant upper-level pattern features a titanic ridge across and downwind the “warm blob” and compensating downstream upper trough in the East U.S.
10/25/2022, 4:26 am EDT

Persistent Wet Southeast Brazil Upper Trough Becomes Migratory…Wetter Northeast Brazil

Wet to very wet climate has dominated southwest and interior southeast Brazil during the past 90 days. The culprit has been a semi-permanent (wet) upper-level low-pressure trough over Southeast Brazil. In Novmber, the trough becomes more migratory and forces the wetter climate into Northeast Brazil while Southern Brazil and Argentina have a tendency for drier than normal climate.