850-hPa winds and isotachs from the NAM12 model at 06 UTC 23 December 2004
850-hPa winds and isotachs from the NAM12 model at 12 UTC 17 October 2006
850-hPa winds and isotachs from the NAM12 model at 06 UTC 25 February 2007
850-hPa winds and isotachs from the NAM12 model at 15 UTC 1 March 2007
Figure 21. The 850-hPa winds and isotachs (wind barbs in kt; light shading denotes wind speeds greater than 50 kt; dark shading denotes wind speeds greater than 70 kt) from the NAM12 model at (top) 06 UTC 23 December 2004, (second) 12 UTC 17 October 2006, (third) 06 UTC 25 February 2007, and (bottom) 15 UTC 1 March 2007.
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