{"title":"Records on 04-18 in past years","description":"Record events on 04-18 across the years in the data.","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/on-this-day/04-18/","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":"USC00394516-1995-04-18-snow_high-all-time","station_id":"USC00394516","station_name":"Kennebec","country":"US","type":"snow_high","timescale":"all-time","date":"1995-04-18","value":584,"unit":"mm","previous_value":318,"previous_date":"1920-02-28","margin":266,"years_stood":75,"significance":92,"tie":false,"provisional":false,"lat":43.9025,"lon":-99.8581},{"id":"USC00238051-2013-04-18-prcp_high-monthly","station_id":"USC00238051","station_name":"Steffenville","country":"US","type":"prcp_high","timescale":"monthly","date":"2013-04-18","value":124.5,"unit":"mm","previous_value":84.1,"previous_date":"1904-04-24","margin":40.4,"years_stood":108,"significance":86,"tie":false,"provisional":false,"lat":39.9703,"lon":-91.8875},{"id":"ASN00014086-2006-04-18-prcp_high-daily","station_id":"ASN00014086","station_name":"Beatrice 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Falls","country":"US","type":"prcp_high","timescale":"monthly","date":"2019-04-18","value":119.4,"unit":"mm","previous_value":72.1,"previous_date":"1954-04-15","margin":47.3,"years_stood":65,"significance":79,"tie":false,"provisional":false,"lat":44.8544,"lon":-92.6122},{"id":"UPM00034401-1993-04-18-prcp_high-all-time","station_id":"UPM00034401","station_name":"Krasnohrad","country":"UA","type":"prcp_high","timescale":"all-time","date":"1993-04-18","value":101.1,"unit":"mm","previous_value":82.3,"previous_date":"1945-07-07","margin":18.8,"years_stood":47,"significance":79,"tie":false,"provisional":false,"lat":49.383,"lon":35.45},{"id":"USC00391579-2018-04-18-snwd_high-daily","station_id":"USC00391579","station_name":"Centerville 6 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