The above image shows the change in snow depth from 7am CST yesterday to 7am CST today. The dark purple shading over extreme NW Oklahoma and the northeast Texas panhandle shows where 20+ inches of new snow fell.
Keep in mind, it was still snowing at 7 o'clock this morning on the northeast Kansas, Missouri and Iowa sides of the image, so the values in those areas aren't reflective of the total new snow yet...
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Coming March 2013: The Tornado Chronicles full website!
• Interactive tornado database back to 1950 (earlier years coming soon)
• Interactive radar with live warnings and street-level zoom
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• Daily tornado outlooks/threat index
• Photos, videos & more!