The National Hurricane Center has issued updated wind speed probability graphics for Tropical Storm Bertha, tracking the storm’s potential impact over a five-day forecast period.
The latest graphics show the probability of 34-knot wind speeds reaching different areas as the storm continues to develop. These probability maps help forecasters and the public understand where tropical storm-force winds are most likely to occur.
The wind speed probability information was last updated on Tuesday, July 21, 2026, at 3:22 AM GMT. Residents in potentially affected coastal areas are encouraged to monitor the latest updates from the National Hurricane Center as the storm progresses.
