{"title":"Records on 1909-12-17","description":"Every record set or tied on 1909-12-17.","dataAsOf":"2026-10-17T00:00:00Z","lastRevised":"2026-10-18","source":"Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products.","licence":"US Government open data (NOAA NCEI)","page":"https://worldextremeweathermonitor.com/records/1909-12-17/","columns":[{"name":"id","description":"Stable record id: station, date, type and timescale."},{"name":"station_id","description":"GHCN-Daily station id."},{"name":"station_name","description":"Station name."},{"name":"country","description":"ISO 3166 alpha-2 country code."},{"name":"type","description":"Record type: tmax_high, tmax_low, tmin_high, tmin_low, prcp_high, snow_high or snwd_high."},{"name":"timescale","description":"daily, monthly or all-time."},{"name":"date","description":"Date the record was set, YYYY-MM-DD."},{"name":"value","description":"Record value in degrees Celsius or millimetres."},{"name":"unit","description":"c for degrees Celsius, mm for millimetres."},{"name":"previous_value","description":"The record it replaced, in the same unit. Empty for a first record."},{"name":"previous_date","description":"Date of the replaced record."},{"name":"margin","description":"How far the new value beat the old record, a non negative magnitude in the same unit. Zero for a tie."},{"name":"years_stood","description":"Whole years the replaced record had stood."},{"name":"significance","description":"Record Significance Score from 0 to 100 (see /methodology/)."},{"name":"tie","description":"True when the value tied the record."},{"name":"provisional","description":"True while the record is inside the 60 day provisional window."},{"name":"lat","description":"Station latitude in decimal degrees."},{"name":"lon","description":"Station longitude in decimal degrees."}],"rows":[{"id":"SF002408910-1909-12-17-prcp_high-daily","station_id":"SF002408910","station_name":"Durban-Botanical Gardens","country":"ZA","type":"prcp_high","timescale":"daily","date":"1909-12-17","value":40.1,"unit":"mm","previous_value":13.2,"previous_date":"1908-12-17","margin":26.9,"years_stood":0,"significance":23,"tie":false,"provisional":false,"lat":-29.85,"lon":31},{"id":"CA006164297-1909-12-17-snow_high-daily","station_id":"CA006164297","station_name":"Lakefield","country":"CA","type":"snow_high","timescale":"daily","date":"1909-12-17","value":64,"unit":"mm","previous_value":25,"previous_date":"1885-12-17","margin":39,"years_stood":23,"significance":18,"tie":false,"provisional":false,"lat":44.4667,"lon":-78.2333},{"id":"SWE00139720-1909-12-17-prcp_high-daily","station_id":"SWE00139720","station_name":"Sveg","country":"SE","type":"prcp_high","timescale":"daily","date":"1909-12-17","value":12.5,"unit":"mm","previous_value":12.5,"previous_date":"1887-12-17","margin":0,"years_stood":21,"significance":2,"tie":true,"provisional":false,"lat":62.0192,"lon":14.1903},{"id":"CA005023243-1909-12-17-prcp_high-daily","station_id":"CA005023243","station_name":"Winnipeg St Johns Coll","country":"CA","type":"prcp_high","timescale":"daily","date":"1909-12-17","value":2,"unit":"mm","previous_value":2,"previous_date":"1904-12-17","margin":0,"years_stood":4,"significance":1,"tie":true,"provisional":false,"lat":49.8833,"lon":-97.1167},{"id":"CA005023243-1909-12-17-snow_high-daily","station_id":"CA005023243","station_name":"Winnipeg St Johns Coll","country":"CA","type":"snow_high","timescale":"daily","date":"1909-12-17","value":20,"unit":"mm","previous_value":20,"previous_date":"1904-12-17","margin":0,"years_stood":4,"significance":1,"tie":true,"provisional":false,"lat":49.8833,"lon":-97.1167}]}