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This compares to a long term mean position of 12.4 degrees north, and a position during the same period last year of 11.8N

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This ITCZ analysis represents the final dekadal product of the season, though a seasonal summary will be available in mid-November.

During the period from October 21-31, 2005, the African ITCZ was located near 11.8 degrees north latitude, when averaged from 15W- 35E and over the entire 11-day period. This compares to a long term mean position of 12.4 degrees north, and a position during the same period last year of 11.8N. The ITCZ surged southward during the past two weeks, with the position jumping nearly two and a half degrees to the south during the last 11 days. It is evident that most of the precipitation has moved south of the Sahel, except for western zones such as Mali, Mauritania, and Senegal, where abnormally heavy rains continue sporadically. In the western area, from 10W-10E, the latest position of the ITCZ was near 12.0N, compared to a long term mean of 12.9N and a position during the last dekad of 14.4N. In the east, from 20E-35E, the latest position of the ITCZ was around 10.7 degrees north, compared to a climatological mean of 11.4N and a position during the previous period of 11.6N.

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This compares with a normal position of 16.7N and a position last year of 16.4N

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This is north of the climatological mean position of 13.5N

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In the west, the latest position of the ITCZ was near 13.7N, compared to the climatological mean of 14.6N and that during May 1-10 of 15.8N

From May 11-20, 2005, the African portion of the Intertropical Discontinuity was located near 12.4 degrees north latitude, compared to the climatological mean of 13.4 north and

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