07/27/2021, 5:12 am EDT

Incoming Cold for Southeast Brazil This Week

A major freeze for Southeast Brazil this week! The cold begins Wednesday morning but peaks Thursday morning with widespread -1C to -4C low temperatures. The chill is likely to linger into late week mornings.
07/26/2021, 11:44 am EDT

La Nina Appears To Be Developing Rapidly!

La Nina development appears to be developing rapidly! The Nino34 SSTA region is already at the La Nina threshold. Last week, the subsurface equatorial East Pacific cooled rapidly and if that trend continues a La Nina onset will be here quickly, possibly by September
07/26/2021, 8:19 am EDT

Low Mid-level Relative Humidity Limits Atlantic TC Activity

A stronger-than-normal Bermuda high-pressure system is contributing to the lack of relative humidity in the middle atmosphere across the tropical/subtropical North Atlantic basin. The lack of RH in the mid-level atmosphere is well-correlated to lack of tropical cyclone activity since Elsa earlier this month.
07/19/2021, 9:37 am EDT

Tropics/Subtropics Not Warming in the North Atlantic

Dramatic warming in the Atlantic Ocean in the eastern equatorial region has been dramatic. The warming is not expanding west and northwest as forecast models have forecast, at least not yet.