Chart of the Day Archives - Page 184 of 221

04/24/2022, 2:22 pm EDT

Sharp Temperature Flip in Central South America Pattern Ahead

An intense negative phase of the Antarctic oscillation (-AAO) is forecast for this week. As a result, an unusually intense upper trough is forecast to evolve over Southern Argentina. To the north of that trough, dynamic forcing causes excessive heat to develop in central South America. Centered on Paraguay and far northern Argentina temperatures >100F this week. However, the much cooler air mass to the south roars northward in the 6-10-day period

04/18/2022, 5:21 am EDT

The Rains of Australia

Areas of heavy rain are in the GFS ENS 15-day outlook for Australia. The northeast coast is wettest with some of that (tropical) rain entrained into a potent upper-level low-pressure area in Central Australia in the 6-10-day period. Another storm may strike the West Coast in the 11-15-day period.

04/07/2022, 9:04 am EDT

Brazil and U.S. Drought Concerns

Close monitoring of forecasts across Brazil as we follow the progress of their second corn crop and also the historic dryness already in-place in the U.S. including California, Texas and Montana and the likely intensification ahead as summer 2022 approaches.

04/04/2022, 2:42 pm EDT

Madden Julian Oscillation Becoming Active Again; Could Squash La Nina

The Madden Julian oscillation is forecast by GFS to strengthen and shift toward the Dateline over the next 10 days. Beneath that zone, waters are already warming. If MJO shifts east of the Dateline after mid-April another warm surge of water could further weaken La Nina.