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Last modified
1/25/2010 6:27:28 PM
Creation date
10/4/2006 11:48:58 PM
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Template:
Floodplain Documents
County
Statewide
Basin
Statewide
Title
Sensitivity of WSR-88D Rainfall Estimates to the Rain Rate Threshold and Rain Gauge Adjustment: A Flash Flood Case Study
Date
6/8/1998
Prepared By
NOAA
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />thunderstonns covered northeast Colorado during the evening hours with the stronger <br /> <br />stonns all producing heavy rains, hail and tornadoes. A thunderstorm with heavy rain <br /> <br />moved eastward out of Park County into southwest Jefferson County around 800 p.m. <br /> <br />Radar indicated 50+ dBZ over the town of Buffalo Creek from 815 p.m.-915 p.m. <br /> <br />Lighter showers occurred in the area through 1100 p.m. but probably did not aggravated <br /> <br />the situation greatly. The Stonn Total product indicated that 2-3 inches of rain fell, with <br /> <br />most of it likely faIling between 815 and 915 p.m. This stonn had been monitored <br /> <br />closely for severe potential. The stonn was moving east at 20 mph, but slowed slightly as <br /> <br />it moved across the area. During the heavier rains, numerous severe thunderstonn and <br /> <br />tornado warnings were issued, with several in the Denver metropolitan area. Some <br /> <br />locations in the Denver area received almost 3 inches of rain from 2 different stonns, but <br /> <br />only minor flooding resulted. <br /> <br />SATELLITE: <br /> <br />Not Available (2 1/2 days after event) <br /> <br />COMMENTS: A total of 18 severe thunderstonn and 5 tornado warnings were issued by <br /> <br />forecasters between 600 p.m. and midnight. Two forecasters were handling the severe <br /> <br />weather warnings while another forecaster did the routine duties and assisted in the severe <br /> <br />weather operations, when time permitted. The stonns were in the metro area between <br /> <br />800 p.m. and midnight, which greatly added to the workload. It should be noted that no <br /> <br /> <br />other significant flooding occurred with the stonn that struck Buffalo Creek, even though <br /> <br /> <br />the storm was just as intense to the west and east of this location. The major fire that <br /> <br />burned up 12 thousand acres in southwest Jefferson County 2 months ago was a big <br /> <br />culprit in this event. Residents in the area have seen flash floods in this area before, but <br /> <br />29 <br />
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