The National Hurricane Center has issued updated wind speed probability graphics for Tropical Storm Bertha, providing forecasters and the public with the latest look at where dangerous winds may develop over the coming days.
The graphics show the probability of 34-knot winds — the threshold for tropical storm-force conditions — reaching various locations within a 120-hour, or five-day, forecast window.
According to the National Hurricane Center, the wind speed probability data was last updated on Tuesday, July 21, 2026, at 9:23 a.m. GMT.
Residents along the East Coast, including those on the Delmarva Peninsula, are encouraged to monitor the latest updates from the National Hurricane Center as Tropical Storm Bertha continues to develop.
