{"title":"Records on 1912-05-17","description":"Every record set or tied on 1912-05-17.","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/1912-05-17/","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":"CA006153192-1912-05-17-prcp_high-daily","station_id":"CA006153192","station_name":"Hamilton","country":"CA","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":39.9,"unit":"mm","previous_value":9.7,"previous_date":"1881-05-17","margin":30.2,"years_stood":30,"significance":45,"tie":false,"provisional":false,"lat":43.2667,"lon":-79.9},{"id":"CA006152691-1912-05-17-prcp_high-daily","station_id":"CA006152691","station_name":"Georgetown","country":"CA","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":33.8,"unit":"mm","previous_value":12.7,"previous_date":"1894-05-17","margin":21.1,"years_stood":17,"significance":38,"tie":false,"provisional":false,"lat":43.65,"lon":-79.95},{"id":"CA006148100-1912-05-17-prcp_high-daily","station_id":"CA006148100","station_name":"Stratford","country":"CA","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":38.4,"unit":"mm","previous_value":14.7,"previous_date":"1906-05-17","margin":23.7,"years_stood":6,"significance":34,"tie":false,"provisional":false,"lat":43.3833,"lon":-81},{"id":"CA007056067-1912-05-17-prcp_high-daily","station_id":"CA007056067","station_name":"Pointe Au 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4 W","country":"US","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":20.8,"unit":"mm","previous_value":16,"previous_date":"1881-05-17","margin":4.8,"years_stood":30,"significance":17,"tie":false,"provisional":false,"lat":41.55,"lon":-72.7167},{"id":"CA008202198-1912-05-17-prcp_high-daily","station_id":"CA008202198","station_name":"Halifax","country":"CA","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":37.3,"unit":"mm","previous_value":36.3,"previous_date":"1874-05-17","margin":1,"years_stood":37,"significance":15,"tie":false,"provisional":false,"lat":44.65,"lon":-63.6},{"id":"NLE00102079-1912-05-17-prcp_high-daily","station_id":"NLE00102079","station_name":"Helmond","country":"NL","type":"prcp_high","timescale":"daily","date":"1912-05-17","value":10.8,"unit":"mm","previous_value":6.4,"previous_date":"1909-05-17","margin":4.4,"years_stood":3,"significance":13,"tie":false,"provisional":false,"lat":51.4831,"lon":5.6167},{"id":"USC00034251-1912-05-17-tmin_low-daily","station_id":"USC00034251","station_name":"Little Rock St Capitol","country":"US","type":"tmin_low","timescale":"daily","date":"1912-05-17","value":9.4,"unit":"c","previous_value":10,"previous_date":"1895-05-17","margin":0.6,"years_stood":16,"significance":9,"tie":false,"provisional":false,"lat":34.75,"lon":-92.2833},{"id":"CA006166416-1912-05-17-tmax_low-daily","station_id":"CA006166416","station_name":"Peterborough","country":"CA","type":"tmax_low","timescale":"daily","date":"1912-05-17","value":12.2,"unit":"c","previous_value":12.8,"previous_date":"1909-05-17","margin":0.6,"years_stood":3,"significance":5,"tie":false,"provisional":false,"lat":44.2833,"lon":-78.3167},{"id":"CA008205988-1912-05-17-tmin_high-daily","station_id":"CA008205988","station_name":"Truro","country":"CA","type":"tmin_high","timescale":"daily","date":"1912-05-17","value":12.8,"unit":"c","previous_value":12.8,"previous_date":"1879-05-17","margin":0,"years_stood":32,"significance":3,"tie":true,"provisional":false,"lat":45.35,"lon":-63.3},{"id":"ASN00048013-1912-05-17-tmin_low-daily","station_id":"ASN00048013","station_name":"Bourke 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