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A visible image taken from the geostationary satellite GOES East (placed over the east coast of America, longitude 75° W) at 1200 UTC on 20 August 2007. The outlines of countries are overlaid and there is also a grid of reference marks (+). This image is illuminated by sunlight and the brightness indicates the amount of light that has been scattered back to the satellite; clouds appear white and the oceans (where cloud-free) appear darker than the land. Dawn is just breaking in the Caribbean, where Hurricane Dean, a Category 5 storm, can be seen between Cuba and Central America.