Hurricane Karina strengthens into a Category 4 hurricane, according to the U.S. National Hurricane Center. The NHC says the storm intensifies on Sunday, reaching a higher strength level than in earlier assessments.

The outlets provide largely aligned updates focused on the change in Karina’s intensity. One report emphasizes the timing of the strengthening, stating it occurs as the NHC issues its latest advisory. Another similarly describes Karina becoming a powerful Category 4 storm, reflecting the same upgrade in storm strength.

Both accounts treat the Category 4 status as the central development, rather than highlighting differing forecasts, impacts, or tracks. While details such as the storm’s exact track, potential landfall risk, and wind field characteristics are not included in the provided excerpts, the shared point is that the NHC’s latest assessment indicates continued intensification to Category 4.