The PV analysis is shown in the first frame.
250 mb temperature advection is shown in the second frame. Temperature advection is shown in shaded blue and red. 250 mb height contours are shown in yellow. Wind barbs are winds at 250 mb.
It is clear from the two frames that strong warm air advection was occurring at 18Z on December 14th over southern Georgia, southeastern Alabama and northern Florida, directly ahead of the PV anomaly over southern Mississippi and southeastern Louisiana.
However, it is not clear from the above analysis whether there was any net warming of the air at 250 mb. Based on the integration of the hypsometric equation, it is necessary to achieve net warming of the air in the upper portion of the atmospheric column (250 mb) to have a significant impact on the height tendency at the bottom of the column (1000 mb).
Warm air advection is often offset by adiabatic cooling due to upward vertical motion. If the two are in balance, no net warming can occur. To assess the balance between warm air advection and rising motion, it is necessary to examine the flow of air along isentropic surfaces in the upper levels of the troposphere.
