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This is severe.im. Note: if this server is operating slowly, please email me. It could be a hung Gempak process.

Latest changes:
(1) The RAP index page should now start with the current hour's data, not default to 12 UTC.
(2) Surface maps with a white background, suitable for classroom display.
(3) The coming loss of GOES-13 has necessitated a switch to GOES-16 data for the East US sector. Only subsets of the default NOAA images are available for now.