{"title":"London: threshold days by year","description":"Days at or beyond each fixed threshold at London, by year.","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/stations/USC00154893/thresholds/","columns":[{"name":"threshold","description":"Threshold id, for example tmax_ge_40c."},{"name":"year","description":"Calendar year."},{"name":"days","description":"Days in the year at or beyond the threshold."},{"name":"first","description":"First qualifying date of the year."},{"name":"last","description":"Last qualifying date of the year."},{"name":"longest_streak","description":"Longest run of consecutive qualifying days inside the year."}],"rows":[{"threshold":"prcp_ge_10mm","year":1915,"days":55,"first":"1915-01-06","last":"1915-12-29","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1916,"days":37,"first":"1916-01-01","last":"1916-12-28","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1917,"days":45,"first":"1917-01-03","last":"1917-12-25","longest_streak":5},{"threshold":"prcp_ge_10mm","year":1918,"days":54,"first":"1918-01-02","last":"1918-12-31","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1919,"days":45,"first":"1919-01-01","last":"1919-12-14","longest_streak":5},{"threshold":"prcp_ge_10mm","year":1920,"days":48,"first":"1920-01-01","last":"1920-12-14","longest_streak":4},{"threshold":"prcp_ge_10mm","year":1949,"days":30,"first":"1949-01-18","last":"1949-12-22","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1950,"days":53,"first":"1950-01-05","last":"1950-12-07","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1915,"days":18,"first":"1915-01-12","last":"1915-12-29","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1916,"days":9,"first":"1916-01-13","last":"1916-12-28","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1917,"days":11,"first":"1917-01-03","last":"1917-10-30","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1918,"days":16,"first":"1918-01-15","last":"1918-10-30","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1919,"days":13,"first":"1919-01-01","last":"1919-12-07","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1920,"days":13,"first":"1920-01-09","last":"1920-08-10","longest_streak":3},{"threshold":"prcp_ge_25mm","year":1949,"days":14,"first":"1949-01-21","last":"1949-12-18","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1950,"days":12,"first":"1950-01-05","last":"1950-12-03","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1915,"days":2,"first":"1915-05-24","last":"1915-10-01","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1916,"days":1,"first":"1916-08-16","last":"1916-08-16","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1917,"days":2,"first":"1917-01-05","last":"1917-09-28","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1918,"days":4,"first":"1918-01-28","last":"1918-09-05","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1919,"days":3,"first":"1919-01-01","last":"1919-05-08","longest_streak":2},{"threshold":"prcp_ge_50mm","year":1949,"days":2,"first":"1949-08-13","last":"1949-09-18","longest_streak":1},{"threshold":"snow_ge_10cm","year":1917,"days":3,"first":"1917-03-04","last":"1917-12-29","longest_streak":1}]}