Extreme rainfall puts cities on alert / Weatherwatch: Year's worth of rain falls in Argentinian city in eight hours / Storm Jana drenches Spain: Weather warnings issued as rain and hail intensify / Hong Kong to get thunderstorms, year's first 'significant rainfall' on Tuesday / Met office predicts rains in parts of country during Ramazan / Delhi's air quality improves to 'moderate' after record rainfall / Environment Canada issues rainfall warning for Toronto and surrounding areas / Rain ends dry spell, improves air quality in Lahore / Incessant rain leads to waterlogging in parts of central, south, outer Delhi