Weather uncertainties over Iceland are the dominant factor keeping the market near even at 53.5% for high visibility of the August 12 total solar eclipse in Reykjavík. Official long-range forecasts show variable cloud cover and possible marine layer or frontal systems during the late-afternoon totality window, with model ensembles diverging on exact timing and thickness. Historical August climatology indicates roughly even odds of clear skies along the path, but short-term shifts in high-pressure positioning or Atlantic moisture could rapidly alter conditions. Updated numerical weather prediction runs from European and U.S. agencies over the next week, plus satellite observations of developing systems, will provide the key data likely to move trader sentiment decisively.