Lorenzo — 2025

Tropical Storm Lorenzo formed from a tropical wave that moved off Africa on 9 October and developed into a tropical storm around 0600 UTC 13 October about 900 nautical miles west of the Cabo Verde Islands. Lorenzo remained well out in the eastern and central tropical Atlantic, moving generally west-northwestward and lasting until about 1800 UTC 15 October when it dissipated. The storm reached its peak early on 14 October and then weakened over the next day before dissipating. There were no landfalls associated with Lorenzo. The system remained far from land for its entire 54-hour life, and no coastal watches or warnings were issued. Lorenzo’s maximum sustained winds were estimated at 50 knots (about 58 mph), with a minimum central pressure of 1000 mb, making it a moderate tropical storm at peak intensity. The peak intensity was reached around 0000–0600 UTC 14 October. Because Lorenzo stayed over open water, there were no reports of storm surge or rainfall impacts on land in the NHC report. No surface observations of tropical-storm-force winds were reported at coastal locations. There were no reports of damage or casualties associated with Lorenzo; the NHC noted no direct fatalities. The regions most affected were none—Lorenzo did not impact populated areas. Noteworthy items include that Lorenzo’s formation was not well anticipated in early outlooks: it was not included in the Tropical Weather Outlook until about 48 hours before genesis and only reached a high probability in the 7-day outlook in the final 6 hours before formation. Official track forecast errors were larger than recent 5-year means at 12–24 hours but smaller at 36–48 hours; intensity forecasts tended to be too low early on and then too high as the storm weakened faster than expected.