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<br />Storm duration during the 11 storm periods averaged 32 <br />hours (median 31 hours) with the longest duration over the <br />network averaging 68 hours and the shortest averaging 10 hours. <br /> <br />For the precipitation gauge network, average precipitation <br />during the storms was 0.71 inches, but the storm total varied <br />considerably from storm to storm. The median, which was much <br />less than the average at 0.36 inches, was probably more repre- <br />sentative of a typical storm since the average contained an <br />unusual storm of the once in 20 year magnitude. Over 35 percent <br />of the storms had totals less than 0.10 inches. <br /> <br />Hourly precipitation rates during the storms were usually <br />light with over half of the hours with 0.01 inch or more receiving <br />less than 0.03 inch. However, on occasion (about 20 percent <br />of the time), hourly rates increased to 0.09 inch or more, <br />and half of the total seasonal precipitation was produced <br />with such rates. <br /> <br />Daily storm totals also tended to be light, with half <br />of the days on which precipitation fell recording amounts <br />below 0.15 inch. Such days contributed less than 10 percent <br />of the total recorded during all storms within the field season. <br />Half of the total seasonal precipitation fell on only 10 percent <br />of the days. These days recorded 0.70 inch or more. <br /> <br />The storm entity is usually composed of a number of continuous <br />precipitation periods within it. These periods, called precipi- <br />tation episodes, are often of short duration. Twenty-five <br />percent lasted only 1 hour and 50 percent had durations of <br />3 hours or less. However, storms of average length (approximately <br />a day) might reasonably be expected to have several precipitation <br /> <br />3-55 <br /> <br /> <br />I <br />I <br />, ' <br />, <br />, <br />I <br />'i <br />t <br />I <br />I <br />, <br />t <br />I <br />.~ <br />.~ <br />I <br />f <br />t <br />, <br />I <br /> <br />