Axiom-3 - L-1 Day

Post-frontal high-pressure center over the southeastern US will continue its eastward slide into the Atlantic on Thursday, veering local Spaceport winds out of the south-southeast and introducing low-level moisture. Models continue to oscillate around how much northward movement the old frontal boundary will have, and therefore how much instability the Spaceport will see. They have now swung back towards a more unstable solution, with increasing clouds and chances for showers or even a storm. This results in an increased threat for Cumulus Cloud Rule violations as well as Flight Through Precipitation for the primary launch window Wednesday afternoon. However, given the high uncertainty of the forecast, and the limited depth of the moisture return, overall POVs remain on the lower side. Models seem to have settled on Friday’s frontal passage occurring earlier in the day as the parent low races up the east coast. The threat for precipitation during the backup window has diminished from earlier forecasts, but lingering clouds and drizzle will keep chances for cumulus clouds and precipitation into the backup window. A strong area of high pressure will overspread the eastern half of the US behind the front for the upcoming weekend, making its way eastward during the day on Saturday. The only weather concern will be liftoff winds with the robust pressure gradient bringing breezy to windy conditions.