The squadron, based at nearby Patrick Air Force Base, provides the weather assessments for launches at the space center. This happens when a giant spark of electricity occurs as a large rocket flies through a strong enough atmospheric electric field. It's not just the weather at the site of the launch pad. The Weather Squadron also has to monitor the weather downrange because if the Crew Dragon Capsule encounters a problem, it needs to have a safe splashdown location. A whole team of meteorologists is on hand from the 45th Space Wing and SpaceX to determine if the weather will scrub the launch.
Source: CNN May 30, 2020 06:56 UTC