NASA Crew-4 - L-1 Day

Persistent high pressure over the Western Atlantic will break down as a frontal system moves through the southeastern US and into North Florida by late day. Ahead of it, there will be enough moisture for at least isolated showers to develop with a late day sea breeze collision across the interior of the state. Flow veering south-southwest will bring some of these back towards the Spaceport late this evening, but they are expected to dissipate by the launch window early Wednesday morning. The main weather concerns will be the Cumulus Cloud Rule and Flight Through Precipitation. The boundary moves through Central Florida on Wednesday, with increased cloud cover and scattered showers through the day. The boundary may be just south of the region by the backup launch window early Thursday morning, but still close enough that the cloud cover and showers will be a concern. The boundary is expected to be south of the area for Friday morning launch attempt, as high pressure builds in bringing drier air.