{"title":"Records on 05-01 in past years","description":"Record events on 05-01 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/05-01/","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":"USC00148038-2017-05-01-snow_high-all-time","station_id":"USC00148038","station_name":"Syracuse 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4W","country":"US","type":"snow_high","timescale":"monthly","date":"2017-05-01","value":356,"unit":"mm","previous_value":64,"previous_date":"1907-05-03","margin":292,"years_stood":109,"significance":90,"tie":false,"provisional":false,"lat":38.9511,"lon":-100.5475},{"id":"USC00054734-1990-05-01-snwd_high-monthly","station_id":"USC00054734","station_name":"Lake City","country":"US","type":"snwd_high","timescale":"monthly","date":"1990-05-01","value":305,"unit":"mm","previous_value":127,"previous_date":"1905-05-05","margin":178,"years_stood":84,"significance":83,"tie":false,"provisional":false,"lat":38.0247,"lon":-107.3147},{"id":"ASN00069015-2006-05-01-prcp_high-daily","station_id":"ASN00069015","station_name":"Eden (Caravan 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STN","country":"US","type":"prcp_high","timescale":"daily","date":"2000-05-01","value":101.6,"unit":"mm","previous_value":29.7,"previous_date":"1897-05-01","margin":71.9,"years_stood":102,"significance":80,"tie":false,"provisional":false,"lat":36.1056,"lon":-82.8436},{"id":"ASN00088020-1995-05-01-prcp_high-daily","station_id":"ASN00088020","station_name":"Daylesford","country":"AU","type":"prcp_high","timescale":"daily","date":"1995-05-01","value":59,"unit":"mm","previous_value":23.6,"previous_date":"1889-05-01","margin":35.4,"years_stood":105,"significance":79,"tie":false,"provisional":false,"lat":-37.3432,"lon":144.1575},{"id":"GME00132562-2004-05-01-prcp_high-daily","station_id":"GME00132562","station_name":"Clausthal-Zellerfeld","country":"DE","type":"prcp_high","timescale":"daily","date":"2004-05-01","value":39.8,"unit":"mm","previous_value":13.6,"previous_date":"1902-05-01","margin":26.2,"years_stood":102,"significance":79,"tie":false,"provisional":false,"lat":51.7917,"lon":10.3481},{"id":"USC00410436-2021-05-01-prcp_high-daily","station_id":"USC00410436","station_name":"Austwell","country":"US","type":"prcp_high","timescale":"daily","date":"2021-05-01","value":109.7,"unit":"mm","previous_value":16.5,"previous_date":"1922-05-01","margin":93.2,"years_stood":99,"significance":79,"tie":false,"provisional":false,"lat":28.3889,"lon":-96.8389},{"id":"CA003035220-1951-05-01-prcp_high-all-time","station_id":"CA003035220","station_name":"Pincher Creek Town","country":"CA","type":"prcp_high","timescale":"all-time","date":"1951-05-01","value":127.5,"unit":"mm","previous_value":81.8,"previous_date":"1902-05-23","margin":45.7,"years_stood":48,"significance":79,"tie":false,"provisional":false,"lat":49.5167,"lon":-113.9667},{"id":"ASN00035051-1996-05-01-prcp_high-daily","station_id":"ASN00035051","station_name":"Orion","country":"AU","type":"prcp_high","timescale":"daily","date":"1996-05-01","value":84,"unit":"mm","previous_value":8.6,"previous_date":"1901-05-01","margin":75.4,"years_stood":95,"significance":78,"tie":false,"provisional":false,"lat":-24.2644,"lon":148.3825},{"id":"ASN00090005-2020-05-01-prcp_high-daily","station_id":"ASN00090005","station_name":"Beeac (Post Office)","country":"AU","type":"prcp_high","timescale":"daily","date":"2020-05-01","value":32,"unit":"mm","previous_value":8.4,"previous_date":"1926-05-01","margin":23.6,"years_stood":94,"significance":78,"tie":false,"provisional":false,"lat":-38.1954,"lon":143.6399},{"id":"USC00148988-2017-05-01-snow_high-monthly","station_id":"USC00148988","station_name":"Winona","country":"US","type":"snow_high","timescale":"monthly","date":"2017-05-01","value":356,"unit":"mm","previous_value":127,"previous_date":"1954-05-02","margin":229,"years_stood":62,"significance":78,"tie":false,"provisional":false,"lat":39.0589,"lon":-101.2439},{"id":"USC00182060-2014-05-01-prcp_high-monthly","station_id":"USC00182060","station_name":"Conowingo 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(Observatory Hill)","country":"AU","type":"prcp_high","timescale":"daily","date":"1955-05-01","value":188.2,"unit":"mm","previous_value":57.9,"previous_date":"1864-05-01","margin":130.3,"years_stood":90,"significance":76,"tie":false,"provisional":false,"lat":-33.8607,"lon":151.205}]}