Sam has all the ingredients needed to remain a powerful hurricane for days to come. (Image credit: RAMMB/CIRA/CSU ) Forecast for Sam The storm’s sharp eye, about 14 miles across, is clearly visible. Visible satellite image of Sam at 1630Z (12:30 p.m. On Sunday morning, satellite imagery designed for assessment on the Dvorak intensity scale supported the NHC diagnosis of Sam as a powerful, steady-state Category 4 storm. However, satellite images did not quite support a Cat 5, and the National Hurricane Center concluded that the recon observations were more consistent with brief eyewall vortices, perhaps even the size of tornadoes, rather than reflecting the storm as a whole. Data collected by dropsonde and SFMR from a recon flight on Saturday evening suggested that Sam might have briefly approached or reached Category 5 strength. It will be Sunday evening before we have the next in-person measurements of Sam’s strength from reconnaissance aircraft. One of the best examples of "Enveloped Eyewall Lightning" (EEL) in the Atlantic in recent years, and an interesting case of a satellite's "parallax" offset: /hJ7ZJm9WyE- Jake Carstens September 26, 2021 Morning visible satellite on #Sam is stunning from a meteorological perspective.
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