SPC 850 mb heights, wind and frontogenesis
Notes:
The upward vertical motion was focused by the presence of a strong a strong north-south frontal zone over New York and Pennsylvania. The 850 mb frontogenesis from this SPC analysis shows the focused forcing for upward motion intensifying across the area between 18z and 21z on the 30th, then remaining strong through 06z on the 1st.|
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Valid 1800 UTC 30-Sep-2010 Valid 2100 UTC 30-Sep-2010 Valid 0000 UTC 01-Oct-2010 Valid 0300 UTC 01-Oct-2010 Valid 0600 UTC 01-Oct-2010 |
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Slide 9
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