Eta 3 hour forecast 950 mb theta-e, ageostrophic wind (red barbs) and wind (blue barbs) valid 1/6/05 15 UTC.

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Speaker Notes:

At 15 UTC, cold advection was still indicated by the northeasterly agesotrophic wind, while near neutral advection was indicated by the southeasterly actual wind. Note that the ageostrophic wind at this time had increased to 40 kts from the northeast.