NASA Crew-3 - L-0 Forecast

A large area of high pressure across the eastern US will continue its slide into the Atlantic, with deepening easterly flow bringing more clouds into the coast. Passing light showers will be possible through the afternoon and into the launch window. The main weather concerns for this evening’s launch will be Cumulus Clouds and Flight Through Precipitation associated with this activity. The next storm system will wind up across the northern tier of the US, bringing another cold front through the eastern third of the US late week. Deeper moisture arrives as flow becomes southerly, along with better chances for showers, and potentially a storm, Thursday afternoon and evening across Central Florida. Some of this activity may push east off the coast near the Spaceport late evening as steering flow becomes southwesterly. Cumulus Clouds, Flight Through Precipitation, and the Surface Electric Field Rule will all be a concern for a Thursday evening launch attempt. Models have trended towards a pre-frontal boundary moving through Friday afternoon, bringing slightly better weather conditions by the Friday evening launch window. Cumulus Clouds and Flight Through Precipitation will be the main launch concerns Friday night.