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HOME > FEWS-NET > Africa > Africa ITCZ Monitoring

Africa InterTropical Front (ITF)

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 ITF .pdf file, --> Click Here



Mean vs Current Mean ITCZ


West Region East Region
West
ITCZ East
ITCZ

Latest Text Summary



From October 21-31, the ITF continued its equatorward retreat, rapidly in the west but more slowly in the east. The ITF was close to the climatological position along most of its length. The mean western (10W-10E) portion of the ITF was approximated at 13.1N, a drop of 1.9 degrees. The displacement of the ITF to within a couple tenths of a degree of its average position put an end to late-season rain accross the western Sahel. The mean eastern (20E-35E) portion of the ITF was approximated at 10.9N, south of the previous dekad by 0.8 degrees. The eastern ITF position for late October fell below the normal position by 0.6 degrees and marked the 5th consecutive below-normal dekad to end the season. Figure 1 shows the current position of the ITF compared to the climatological position during the 3rd dekad of October, and its previous position during the 2nd dekad of October. Figures 2 and 3 are time series, illustrating the latitudinal values of the western and eastern portions of the ITF, respectively, and their seasonal evolutions since April, 2018.

Dekad 15W 10W 5W 0 5E 10E 15E 20E 25E 30E 35E
April 1 12.0 12.4 12.4 12.3 11.3 9.6 9.7 9.4 9.0 9.2 9.0
April 2 10.9 10.5 11.2 12.1 12.0 11.5 10.1 9.7 8.6 8.7 8.7
April 3 11.6 11.5 12.8 12.8 13.4 11.9 11.1 10.1 9.4 9.7 10.5
May 1 8.2 10.9 12.2 13.0 13.6 13.7 13.6 12.1 11.4 12.4 14.2
May 2 11.2 13.2 14.0 14.8 15.3 14.0 12.7 11.4 11.0 11.7 12.2
May 3 12.5 13.9 15.7 16.5 15.6 14.5 14.2 14.1 13.5 14.4 16.3
June 1 15.0 15.2 15.7 16.3 16.1 14.4 13.5 13.5 12.6 12.6 14.3
June 2 15.3 15.2 15.9 16.9 17.0 16.5 16.6 16.6 15.1 15.5 16.7
June 3 16.6 17.3 18.2 18.9 18.3 18.1 18.3 17.3 15.4 15.9 18.0
July 1 18.0 19.3 20.4 20.0 18.0 17.5 17.7 16.5 15.5 16.0 17.4
July 2 17.3 19.0 19.4 19.3 17.9 18.0 18.2 17.0 15.3 16.0 17.6
July 3 19.7 21.2 20.9 21.1 19.7 19.3 18.9 17.8 17.8 19.0 20.6
August 1 18.2 20.6 21.4 21.9 20.6 21.3 20.6 20.8 18.9 18.4 19.9
August 2 18.2 20.7 21.8 21.7 19.8 19.6 19.2 19.4 17.5 18.3 19.6
August 3 19.6 20.7 20.9 21.0 19.5 18.8 18.5 18.5 16.5 16.5 18.1
September 1 18.5 20.6 20.7 19.9 18.0 17.3 17.0 16.5 15.4 16.6 18.6
September 2 19.1 19.7 20.1 19.2 17.2 15.8 15.5 15.0 13.6 14.4 17.2
September 3 18.1 18.6 18.6 18.0 15.6 14.7 14.3 14.1 13.6 13.6 14.1
October 1 15.6 15.7 15.9 16.1 16.2 14.8 14.5 14.3 12.6 13.5 13.8
October 2 14.9 16.2 16.2 15.8 14.3 12.3 12.0 11.5 10.5 11.7 13.0
October 3 13.7 14.0 13.8 13.2 12.9 11.5 11.1 10.8 10.9 10.7 11.1


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Page last modified: February 22, 2006
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