Rainfall amounts broke several records. In Jiulongzhen the daily rainfall record fell for Guangzhou, while Xintangzhen broke the three-hour rainfall record for the province. Rivers in Huadu district saw the biggest flood in 20 years.

Water overflew three dikes, damaging one of them http://www.thestandard.com.hk/section-news.php?id=182565

Carbon dioxide sources from Alaska driven by increasing early winter respiration from Arctic tundra http://www.pnas.org/content/early/2017/05/02/1618567114

Persistent, steady rains soaking swaths of central and eastern Canada have created record precipitation levels triggering widespread flooding and put residents and governments on high alert.

• Lake Ontario hits record level after ‘unbelievable’ amounts of rain http://www.newyorkupstate.com/weather/2017/05/lake_ontario_levels_break_record_and_water_levels_are_still_rising.html
• Here are the climate science benchmarks of the Quebec floods http://www.nationalobserver.com/2017/05/08/news/here-are-climate-science-benchmarks-quebec-floods
• Canada flood damage worsens but heavy rains subsiding https://www.afp.com/en/news/2265/canada-flood-damage-worsens-heavy-rains-subsiding
• Trudeau says Ottawa ready to assist communities slammed by flooding, heavy rain http://globalnews.ca/news/3429056/more-flooding-heavy-rain-expected-for-regions-across-canada
• Maps show impact of flooding across Eastern Canada http://www.ctvnews.ca/canada/maps-show-impact-of-flooding-across-eastern-canada-1.3402986