The Alabama gravity wave event of February 22, 1998: A classic mesoscale forecasting challenge 

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Water Vapor Visible Radar
0645 AM CST 1245 UTC. 0645 AM CST 1245 UTC.  
0715 AM CST 1315 UTC. 0715 AM CST 1315 UTC. 0715 AM CST 1315 UTC.
0745 AM CST 1345 UTC. 0745 AM CST 1345 UTC. 0744 AM CST 1344 UTC.
0815 AM CST 1415 UTC. 0815 AM CST 1415 UTC. 0814 AM CST 1414 UTC.
0845 AM CST 1445 UTC. 0845 AM CST 1445 UTC. 0844 AM CST 1444 UTC.
0915 AM CST 1515 UTC. 0915 AM CST 1515 UTC.  
0945 AM CST 1545 UTC. 0945 AM CST 1545 UTC. 0952 AM CST 1552 UTC.
1015 AM CST 1615 UTC.   1017 AM CST 1617 UTC.
1045 AM CST 1645 UTC. 1045 AM CST 1645 UTC. 1043 AM CST 1643 UTC.
1115 AM CST 1715 UTC.   1113 AM CST 1713 UTC.
1145 AM CST 1745 UTC. 1145 AM CST 1745 UTC. 1144 AM CST 1744 UTC.
1215 PM CST 1815 UTC. 1215 PM CST 1815 UTC. 1214 PM CST 1814 UTC.
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