The crucial south-west monsoon is expected to regain momentum next week and make rapid northward advances hitting Mumbai by Thursday. The monsoon was stalled in tracks due the cyclone Phet.<br/> Cyclone Phet had vented its fury in the Arabian Sea and weakened the monsoon soonafter its onset over Kerala on May 31 where rains played truant under the influence of the tropical storm.<br/> The cyclone is expected to make landfall at Karachi on Sunday and its after-effects are expected to bring rains to regions as far as Delhi and parts of Western Uttar Pradesh between Sunday and Tuesday.<br/> Director General, India Meteorological Department Ajit Tyagi, however dismissed suggestions of monsoon being further affected by the cyclone and contended that conditions were favourable for advance of the seasonal rains.<br/>