Eta Cross-Section of Fgen, Sat EPV, and Omega, at 00z, 09/18


Heavy Rain Band

Feeder Band Zone

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This is an Eta 0-hr cross-section of 2-D frontogenesis (white contours), saturated EPV (with weakly stable (just above zero) and unstable (negative) values shaded), and omega (light blue contours), valid at 00z, 9/18/04. A well developed, sloping frontal zone is now evident. Once again, the most persistent heavy rainfall co-exists with strong frontogenetic forcing, elevated instability, and deep-layered omega.

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