September 2025 - Page 11 of 11 - Climate Impact Company

News

09/03/2025, 5:01 am EDT

A map of the earth AI-generated content may be incorrect.

09/03/2025, 5:01 am EDT

High Pressure in Subtropics Suppressing TC Development for Western North Atlantic Basin

The culprit to North Atlantic tropical cyclone development is too much dry air promoted by a strong subtropical high pressure stretched across the North Atlantic basin whereas the 2020-24 climatology produced low pressure in the tropical/subtropical North Atlantic due to presence of tropical cyclones.

09/02/2025, 2:46 pm EDT

A map of the world AI-generated content may be incorrect.

09/02/2025, 2:46 pm EDT

Overall, North Atlantic Cooler Than Recent Summer Seasons; But Gulf/Caribbean/MDR Very Warm!

The North Atlantic basin SSTA is +0.28C which is quite cool compared to other years this decade. The 1-year change is -0.53C which is very impressive. However, there are basins which are very warm and capable of contributing to over-achieving tropical cyclones and their intensity. The Gulf of Mexico is near record warm (+0.90C) which is steady during the past 2 weeks. The Caribbean Sea is also very warm and unchanged during the past 2 weeks.

09/02/2025, 9:28 am EDT

A graph of different colored lines AI-generated content may be incorrect.

09/02/2025, 9:28 am EDT

Slowly, Equatorial Pacific Subsurface Cools

The equatorial Pacific Ocean upper-ocean heat is slowly cooling. The cooling trend, if continued, supports a return of La Nina for quarter 4/2025. The Nino34 SSTA is close to the La Nina threshold while the Nino3 SSTA has shifted to La Nina phase.

09/01/2025, 9:10 am EDT

A graph of the temperature of the month AI-generated content may be incorrect.

09/01/2025, 9:10 am EDT

U.S. CDD’s Crash in August!

The official U.S. population weight CDD for August 2025 from NOAA will be published in a few days. Climate Impact Company (CIC) projects 272 CDD for August which is cooler than the 30-year normal (290 CDD) and much cooler than the 10-year normal (332 CDD). The NOAA assessment is (more) likely cooler than the CIC estimate. The AUG-25 CDD total is 2nd coolest (for AUG) this century trailing only 2004 (254 CDD).