{"title":"Records on 04-01 in past years","description":"Record events on 04-01 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/04-01/","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":"ASN00051039-1989-04-01-prcp_high-all-time","station_id":"ASN00051039","station_name":"Nyngan 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(Sunset Place)","country":"AU","type":"prcp_high","timescale":"all-time","date":"2009-04-01","value":510,"unit":"mm","previous_value":374.9,"previous_date":"1963-04-28","margin":135.1,"years_stood":45,"significance":82,"tie":false,"provisional":false,"lat":-30.4962,"lon":153.0119},{"id":"USC00144559-1967-04-01-prcp_high-monthly","station_id":"USC00144559","station_name":"Lawrence","country":"US","type":"prcp_high","timescale":"monthly","date":"1967-04-01","value":99.8,"unit":"mm","previous_value":65,"previous_date":"1867-04-14","margin":34.8,"years_stood":99,"significance":81,"tie":false,"provisional":false,"lat":38.9569,"lon":-95.2483},{"id":"ASN00041001-1988-04-01-prcp_high-monthly","station_id":"ASN00041001","station_name":"Allora Post 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