In offline test runs ERS-2 scatterometer results showed the ability to correct for the position of tropical cyclones. The ECMWF analysis at 12 UTC 5 October 2003 for Hurricane Kate: inthe left panel ERS-2 data was not used, in the right panel ERS-2 data was used. Shown are isobars (in black), wind streamlines (beige) and assimilated CMOD5 winds (blue barbs). The observed hurricane center is indicated by the red cross wire. Hurricane Kate arose in the tropical Atlantic in late September 2003 and was a Category Three storm.