{"date":"1991-06-21","county":"Jefferson","state":"Colorado","page":"https://www.myhailscore.com/storm/1991-06-21/jefferson-county-co","license":"Free to cite with attribution to HailScore (myhailscore.com). Underlying weather data: NOAA (public domain).","disclaimer":"Hail exposure record, not a damage determination. Radar-estimated sizes carry roughly a ±0.25 inch margin versus ground measurements.","status":"verified","source":"NOAA Storm Events Database (NCEI)","maxHailSizeInches":1.75,"eventCount":4,"firstEventUtc":"1991-06-21T20:10:00.000Z","lastEventUtc":"1991-06-21T23:46:00.000Z","events":[{"noaaEventId":"9986949","hailSizeInches":1.75,"timeUtc":"1991-06-21T23:46:00.000Z","lat":39.63,"lon":-105.05},{"noaaEventId":"9986930","hailSizeInches":1,"timeUtc":"1991-06-21T20:10:00.000Z","lat":39.6,"lon":-105.1},{"noaaEventId":"9986937","hailSizeInches":1,"timeUtc":"1991-06-21T21:39:00.000Z","lat":39.6,"lon":-105.12},{"noaaEventId":"9986936","hailSizeInches":0.75,"timeUtc":"1991-06-21T21:33:00.000Z","lat":39.73,"lon":-105.23}],"dataCurrentAsOf":"2026-07-11T23:22:10.315Z"}