A tropical wave moved off the northwest coast of Africa south of 10°N on June 23, producing a large but disorganized area of showers and thunderstorms.[56][57] The low-level wind circulation associated with the system became better defined[58] and thunderstorm activity increased[59] on June 25–26, as it moved along a west to west-northwesterly track toward the southernmost Windward Islands. A NOAA Hurricane Hunters mission on June 27, reported tropical-storm-strength winds on the north side of the disturbance, but indicated that it had not yet shown a well-defined closed circulation.