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- at Day1 and Day5 at approximately 170E, the 200hPa velocity potential (divergence) is coincident with 850hPa zonal dipole of zonal winds (convergence) and with reduced outgoung outgoing radiation (increased cloud). Thus a strong signal is shown on the Wheeler-Hendon MJO diagram.
- by Day10 the 200hPa velocity potential (divergence) has progressed to about 140W. The 850hPa zonal dipole of zonal winds (convergence) has also progressed similarly, if a little more slowly, with continuing dipole of zonal winds (weakened easterly but strengthened westerly zonal flow). But greater outgoing radiation (because less cloud has been forecast) is evident over the Pacific. Thus the plots on the Wheeler-Hendon MJO diagram give a gradually less strong signal of the intensity of the MJO.
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