Figure 3. 060507z February 2000 GMS infrared imagery showing the trade wind trough, primary (track 1) and secondary (track 2) tracks of disturbances developing in the trade wind trough, the South Pacific Converenge Zone (SPCZ), a shear line northeast of Guam, and the Australian monsoon trough. The disturbance near Guam developed earlier in the trade wind trough around Pohnpei.