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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 July 11-20, 2015, the ITF experienced an asymmetric movement relative to its position during the previous dekad along its edges. The ITF exhibited a northward advancement along its eastern segment in contrast to a southward retreat along its western counterpart. Meanwhile, the ITF stagnated roughly over its position during the first dekad of July across its central portion. As a result, slightly below-average rainfall was observed over parts of western West Africa and northern Eastern Africa, while above-average rainfall persisted trhoughout central West Africa. The mean western (10W-10E) portion of the ITF was located at 18.6N, which was barely to the north of the mean position by 0.1 degree, but was to the south of last year's position during the same period by 0.4 degree. The mean eastern (20E-35E) portion of the ITF was approximated at only 15.2N, which was both to the south of the long-term average position and last year's position by 0.9 degree and 1.2 degrees, respectively. Figure 1 displays the current position of the ITF relative to its climatological position during the second dekad of July and its former position during the 1st dekad of July. Figures 2 and 3 are time series, illustrating the mean latitudinal values of the western and eastern portion of the ITF, respectively, and their evolutions since April, 2015.

Dekad 15W 10W 5W 0 5E 10E 15E 20E 25E 30E 35E
April 1 11.0 11.6 11.4 11.1 10.4 9.8 8.8 9.3 8.1 8.8 9.6
April 2 10.5 11.5 10.6 10.6 8.7 7.1 6.2 7.1 6.5 7.4 8.8
April 3 14.0 13.9 13.3 12.1 11.0 9.4 9.2 9.4 8.8 9.7 9.8
May 1 14.0 14.3 15.2 14.9 13.9 11.1 11.2 12.3 12.6 12.7 13.4
May 2 14.7 14.0 13.3 12.3 11.9 11.4 11.2 11.5 12.8 14.7 13.9
May 3 13.1 13.3 13.9 14.8 15.5 12.9 13.1 12.6 12.0 12.2 13.9
June 1 14.6 14.2 15.3 16.7 17.0 15.2 15.3 14.0 12.4 12.7 13.4
June 2 15.9 15.7 16.4 16.6 16.6 13.6 13.9 13.3 11.8 12.6 14.4
June 3 16.0 15.6 17.1 18.7 17.5 15.6 15.8 14.8 12.8 13.9 15.1
July 1 17.0 18.0 20.0 20.3 19.4 18.3 17.0 15.3 13.2 13.3 14.4
July 2 15.5 16.6 18.6 20.2 19.5 18.0 16.9 15.9 15.1 14.8 15.2


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Page last modified: February 22, 2006
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