Surface frontal analyses of the eastern United States at 06 UTC 23 December 2004
Surface frontal analyses of the eastern United States at 12 UTC 17 October 2006
Surface frontal analyses of the eastern United States at 06 UTC 25 February 2007
Surface frontal analyses of the eastern United States at 15 UTC 1 March 2007
Figure 5. Surface frontal analyses of the eastern United States with isobars (hPa - 1000) 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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