{"title":"Records on 1912-04-21","description":"Every record set or tied on 1912-04-21.","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/1912-04-21/","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":"USW00014824-1912-04-21-prcp_high-daily","station_id":"USW00014824","station_name":"Escanaba","country":"US","type":"prcp_high","timescale":"daily","date":"1912-04-21","value":21.1,"unit":"mm","previous_value":7.6,"previous_date":"1876-04-21","margin":13.5,"years_stood":35,"significance":20,"tie":false,"provisional":false,"lat":45.7181,"lon":-87.0939},{"id":"UK000047811-1912-04-21-prcp_high-daily","station_id":"UK000047811","station_name":"Armagh","country":"GB","type":"prcp_high","timescale":"daily","date":"1912-04-21","value":15.7,"unit":"mm","previous_value":11,"previous_date":"1877-04-21","margin":4.7,"years_stood":34,"significance":20,"tie":false,"provisional":false,"lat":54.35,"lon":-6.65},{"id":"ASN00066015-1912-04-21-prcp_high-daily","station_id":"ASN00066015","station_name":"Crown St. 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