Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0601

0601

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0602

0603

0602

0603

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0605

0604

0605

0604

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0606

0608

0609

0611

06070610 0612

0606

0608

0609

0611

06070610 0612

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

06130614

0615

06130614

0615

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0616

06170618

0619

0616

06170618

0619

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0620

0621

0620

0621

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.

0723

0722

0723

0722

Monthly mean of stream lines at 200 hPa (upper) and 850 hPa (lower). Tracks of the tropical cyclones formed in the month, if any, are superimposed on them. 　 Blue numbers show identifications of tropical cyclones. Areas of outgoing longwave radiation lower than 230w/m2 are shaded on the 850 hPa chart.