Chart of the Day Archives - Page 107 of 145

News

05/01/2022, 2:28 pm EDT

La Nina May Fade But Atmosphere Stays Locked-in on La Nina Climate

The strongest La Nina-like positive phase southern oscillation index of the 2020-22 La Nina regime was observed in April. The La Nina climate roars on even if the anticipated oceanic La Nina character weakens heading toward mid-year.

04/28/2022, 9:11 am EDT

NOAA U.S. Drought Monitor Updated

The NOAA U.S. Weekly Drought Monitor is updated and based on historical dry soil moisture conditions across the Southwest and West-central U.S. plus sneaky historical wet soils in the Upper Midwest and parts of the Interior Northeast.

04/25/2022, 10:02 am EDT

Waters off the Northwest Coast of South America Observe Coolest Anomaly (-1.9) Since July 2013

A remarkable transition has taken place in the Nino12 SSTA region off the northwest coast of South America. The daily Nino12 SSTA is -1.94C and the weekly Nino12 SSTA is -1.9C which is the coolest since July 2013.

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