Hurricane Season Insights: September 2026
In spring 2026, hurricane forecasters predicted a below-normal Atlantic hurricane season due to the El Niño developing in the Pacific. This phenomenon typically enhances storm activity in the eastern and central Pacific, while suppressing it in the Atlantic. By early September, these predictions proved accurate: the Atlantic basin experienced minimal storm activity, while the eastern Pacific was notably active.
Key Details:
-
Northeast Pacific Activity (as of September 3):
- 15 named storms and 6 hurricanes.
- Notable storms:
- Lowell (Category 5 on September 2)
- Karina (Category 4)
- Marie (strengthening tropical storm)
-
Atlantic Activity:
- Only 5 named storms and no hurricanes, attributed to high wind shear.
- Tropical Storm Edouard was visible over Louisiana, causing significant rainfall and flooding.
-
Accumulated Cyclone Energy (ACE) Index:
- Atlantic ACE: 4.4 (9% of normal)
- Northeast Pacific ACE: 130 (50% above normal)
NASA’s DSCOVR satellite captured images of both Pacific cyclones and Tropical Storm Edouard, emphasizing the prevailing weather conditions. The ACE index helps compare individual storm seasons based on both intensity and longevity.
For further insights on storm tracking and related NASA data products, refer to NASA’s Worldview browser.
Image:
Image source: NASA Earth Observatory, story by Adam Voiland
