Starlink 6-19 - L-1 Day

A weak frontal boundary will continue to sag southward into the central part of the state so expect another round of widespread showers and storms this afternoon through the evening hours. For launch day, the boundary will continue to slowly move southward, however, models aren’t in full agreement as to how far. Nevertheless, the Space Port will likely see at least some drying in the atmosphere. Primary concerns will be the Anvil Cloud Rules and the Cumulus Cloud Rule associated with any showers and storms that form along the frontal boundary. For the backup day, the boundary makes little southward progression and may even pull back to the north. Stronger easterly flow across the Cape will shift the focus to onshore moving showers and therefore the Cumulus Cloud Rule will be the primary concern.