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<br />May 2-3, 1904 <br /> <br />3.02 inches in one day, <br /> <br />3.80 inches in two days <br /> <br />A chilly, light rain began afternoon on May I and increased to a steady, moderate rain <br />overnight. The intensity increased during the day on the 2nd as 2.31 inches of rain <br />accumulated in the 12-hour period from 7 a.m. to 7 p.m.. The intensity decreased, but an <br />additional 0.76 inches fell overnight. The rains, ended early on the 3rd. While there was a <br />large accumulation of rain, there was no indication of intense, convective storms. Overall, <br />this storm appears to have been a widespread, beneficial soaking rain. <br /> <br />Soecial note: 17 days later, a very heavy storm north-northwest of Fort Collins produced <br />a major flood on the Poudre River and several of its tributaries. <br /> <br />July 9-10, 1918 <br /> <br />2.82 inches in one day, <br /> <br />2.99 inches in two days <br /> <br />Little was said about this storm, and the written weather reports for the campus weather <br />station were difficult to decipher. Most likely there was a very intense thunderstorm late <br />on the 8th with high rainfall rates for a short period of time followed by light precipitation <br />continuing on and off on the 9th. No information on rainfall patterns elsewhere in the Fort <br />Collins area were obtained, but it might be worth checking newspaper accounts to see if <br />any flooding was reported in the vicinity. <br /> <br />September 2-3, 1938 3.54 inches in one day, <br /> <br />4.68 inches in two days <br /> <br />Rain developed in the region late on August 31 with intennittent heavy showers on the 1st <br />and 2nd. Intense rains began late afternoon on the 2nd in the foothills west of Denver <br />northward to west of Fort Collins. Heavy rains expanded eastward across Fort Collins <br />during the evening with 1.14 inches measured on campus by 7 p.m. on the 2nd. Heavy <br />rains continued overnight with an additional 3.54 inches reported at 7 p.m. on the 3rd but <br />likely most of that fell during the evening of the 2nd and then tapered off to lighter rains. <br />All indications suggest that rainfall totals were heavier to the west. An official weather <br />station near the mouth of the Big Thompson Canyon measured a storm total of 8 inches. <br />Severe flooding was reported on Spring Creek, Buckhorn Creek, and Redstone Creek, as <br />well as other rivers and streams along the Front Range southward to Denver. <br /> <br />October 16-17, 1942 <br /> <br />3.32 inches in two days <br /> <br />More than two inches ofrain had already fallen October 12-14, so ground conditions were <br />already very wet when heavy rain began to fall early on the 16th. During the most intense <br />rain period on the 16th, 1.49 inches was reported in one hour. This is a very heavy rainfall <br />rate for so late in the season. Lighter precipitation continued into the early morning of <br />October 17th with a storm total of3.32 inches in less than 30 hours. The spatial pattern <br />of this rainfall is not known, but some potential for flooding existed. <br /> <br />52 <br />