The 12Z GFS projects an area of showers stretching from the Texas Coast to Louisiana and northeastward to the central Appalachians and westward across the entire Ohio Valley next Monday afternoon around 2PM EDT. Low clouds (cumulus/nimbostratus) associated with rain are shifting east of the eclipse track from Texas to Arkansas but hang tough across the Ohio Valley. This type of cloud will be most opaque and cause a sharp weakened view of the eclipse.

The South America 7-day percent of normal rainfall observations reveal a much drier trend across Argentina while patchy heavy rain areas are developing in Brazil. The 15-day percent of normal rainfall forecast across South America by ECM ENS stays wet in Brazil.

The Climate Impact Company (CIC) 2024 North Atlantic basin tropical cyclone (TC) season forecast projects 20 tropical storms, 10 hurricanes, and 5 intense hurricanes. The accumulative cyclone energy (ACE) index forecast is 187. The activity forecast is somewhat higher than normal.

Climate Impact Company has renewed seasonal North Atlantic tropical cyclone climatology for 1950-2023 for both El Nino southern oscillation (ENSO) and tropical North Atlantic (TNA) index phase and intensity. The climatology is based on ENSO and TNA index for AUG/SEP/OCT of each year.