{"title":"Prompton Dam: threshold days by year","description":"Days at or beyond each fixed threshold at Prompton Dam, 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/USC00367186/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":"tmax_ge_30c","year":2011,"days":13,"first":"2011-06-01","last":"2011-07-30","longest_streak":5},{"threshold":"tmax_ge_30c","year":2026,"days":9,"first":"2026-05-18","last":"2026-08-06","longest_streak":3},{"threshold":"tmax_ge_35c","year":2026,"days":2,"first":"2026-07-02","last":"2026-07-06","longest_streak":1},{"threshold":"tmax_ge_90f","year":2011,"days":6,"first":"2011-06-09","last":"2011-07-24","longest_streak":4},{"threshold":"tmax_ge_90f","year":2026,"days":5,"first":"2026-05-18","last":"2026-07-06","longest_streak":3},{"threshold":"tmax_le_0c","year":2011,"days":46,"first":"2011-01-04","last":"2011-12-30","longest_streak":15},{"threshold":"tmax_le_0c","year":2026,"days":23,"first":"2026-01-02","last":"2026-03-25","longest_streak":5},{"threshold":"tmin_le_0c","year":2011,"days":144,"first":"2011-01-01","last":"2011-12-31","longest_streak":44},{"threshold":"tmin_le_0c","year":2026,"days":56,"first":"2026-01-02","last":"2026-04-22","longest_streak":7},{"threshold":"tmin_le_m10c","year":2011,"days":39,"first":"2011-01-06","last":"2011-12-30","longest_streak":6},{"threshold":"tmin_le_m10c","year":2026,"days":18,"first":"2026-01-16","last":"2026-03-02","longest_streak":5},{"threshold":"tmin_le_m20c","year":2011,"days":7,"first":"2011-01-23","last":"2011-02-24","longest_streak":3},{"threshold":"tmin_le_m20c","year":2026,"days":3,"first":"2026-01-21","last":"2026-02-09","longest_streak":2},{"threshold":"tmin_ge_20c","year":2011,"days":3,"first":"2011-07-22","last":"2011-07-24","longest_streak":3},{"threshold":"tmin_ge_20c","year":2026,"days":7,"first":"2026-05-20","last":"2026-08-07","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1971,"days":36,"first":"1971-01-04","last":"1971-12-30","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1972,"days":49,"first":"1972-01-03","last":"1972-12-22","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1973,"days":50,"first":"1973-01-01","last":"1973-12-27","longest_streak":2},{"threshold":"prcp_ge_10mm","year":1974,"days":33,"first":"1974-01-11","last":"1974-12-26","longest_streak":3},{"threshold":"prcp_ge_10mm","year":1975,"days":37,"first":"1975-01-02","last":"1975-11-28","longest_streak":3},{"threshold":"prcp_ge_10mm","year":2010,"days":36,"first":"2010-01-26","last":"2010-12-13","longest_streak":2},{"threshold":"prcp_ge_10mm","year":2026,"days":16,"first":"2026-02-11","last":"2026-09-28","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1971,"days":10,"first":"1971-02-08","last":"1971-12-07","longest_streak":2},{"threshold":"prcp_ge_25mm","year":1972,"days":12,"first":"1972-02-22","last":"1972-12-22","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1973,"days":12,"first":"1973-01-01","last":"1973-12-21","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1974,"days":9,"first":"1974-04-01","last":"1974-12-09","longest_streak":1},{"threshold":"prcp_ge_25mm","year":1975,"days":11,"first":"1975-02-24","last":"1975-11-13","longest_streak":2},{"threshold":"prcp_ge_25mm","year":2010,"days":8,"first":"2010-03-23","last":"2010-12-02","longest_streak":1},{"threshold":"prcp_ge_25mm","year":2026,"days":3,"first":"2026-02-11","last":"2026-07-22","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1971,"days":1,"first":"1971-08-28","last":"1971-08-28","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1972,"days":2,"first":"1972-06-23","last":"1972-11-09","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1973,"days":2,"first":"1973-06-29","last":"1973-08-02","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1974,"days":1,"first":"1974-04-01","last":"1974-04-01","longest_streak":1},{"threshold":"prcp_ge_50mm","year":1975,"days":2,"first":"1975-09-25","last":"1975-10-20","longest_streak":1},{"threshold":"prcp_ge_50mm","year":2010,"days":2,"first":"2010-07-26","last":"2010-10-01","longest_streak":1},{"threshold":"prcp_ge_100mm","year":1973,"days":1,"first":"1973-06-29","last":"1973-06-29","longest_streak":1},{"threshold":"prcp_ge_100mm","year":2010,"days":1,"first":"2010-10-01","last":"2010-10-01","longest_streak":1},{"threshold":"snow_ge_10cm","year":2010,"days":4,"first":"2010-02-10","last":"2010-02-27","longest_streak":2},{"threshold":"snow_ge_10cm","year":2026,"days":2,"first":"2026-01-02","last":"2026-01-26","longest_streak":1},{"threshold":"snow_ge_25cm","year":2010,"days":1,"first":"2010-02-26","last":"2010-02-26","longest_streak":1},{"threshold":"snow_ge_25cm","year":2026,"days":1,"first":"2026-01-26","last":"2026-01-26","longest_streak":1}]}