Starlink 10-9 - L-1 Day

The western Atlantic ridge axis is north of the Spaceport with deep onshore flow continuing to drive the east coast seabreeze quickly inland each afternoon. Lingering effects from Saharan dust will keep conditions drier than normal, with lower chances for overnight coastal showers. The primary weather concern for an attempt early Saturday morning is the Cumulus Cloud Rule associated with a stray coastal shower. Later on Saturday, the Atlantic ridge will be disrupted by a frontal boundary slipping into the state while an upper-level low meandering near the Bahamas moves north. While there looks to be a gradual increase in afternoon storm chances as a result, given the continuing southeasterly flow and typically favorable launch window, the convective potential remains low. Instead, with upper-level flow out of the north to northeast, a mix of frontal cloudiness, convective debris, and anvils will likely be pulled over the Spaceport from any convection to the north. This will create the primary launch weather concerns of Thick Cloud Layers Rule and Anvil Cloud Rules for Sunday morning’s launch window.