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HOME > FEWS-NET > Africa > Africa ITCZ Monitoring

Africa Intertropical Front

For historical ITF dekadal data and analyses, or for any issues with this product
Please contact: nicholas.novella@noaa.gov or wassila.thiaw@noaa.gov


For the latest ITCZ .pdf file, --> Click Here

Mean vs Current Mean ITCZ


West Region East Region
West
ITCZ East
ITCZ

Latest Text Summary



From April 21-30, 2012, the ITF has continued to maintain its northward seasonal advancement throughout many portions of Africa. The mean western portion of the ITF was located 13.6 degrees during late April, and showed considerable movement compared to its position during previous dekad. The higher than average position in the west was associated with strong, southerly flow producing ample moisture and rainfall across portions of Cote DIvoire, Burkina Faso, and southern Mali in the last ten days. However, contrast to the west, the mean eastern portion of ITF was approximately located at 9.1 degrees, and showed a seasonal reversal in its movement (equatorward) in the last dekad. It's current position remains lower than the previous dekadal position observed during mid-April, and nearly 2 degrees below its normal climatological position for late April. The eastern ITF anomaly was associated with robust northerly flow across eastern Sahara that helped to suppress any ITF movement over Sudan during the last week. Figure 1 shows the current ITF position relative to the climatological average position for the third dekad of April and its previous position during the first dekad of April. Figures 2 and 3 are time series, illustrating the latitudinal means of the western and eastern portions of the ITF, respectively, and their evolutions since the start of April.

Dekad 15W 10W 5W 0 5E 10E 15E 20E 25E 30E 35E
April 1 11.0 11.2 11.4 12.2 11.9 10.1 8.0 6.7 5.5 6.1 6.4
April 2 11.6 10.7 11.5 12.1 12.4 11.3 11.1 11.7 9.8 9.1 9.6
April 3 12.2 13.5 14.5 14.4 13.8 11.8 11.5 10.4 8.3 8.8 9.0


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