Casebook 19 June 2003: Difference between revisions
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Scattered non-severe thunderstorms developed within the CSU-CHILL coverage area during the evening of 19 June 2003 (UTC date; locally 18 June). Some of these storms produced locally intense rain rates. (The NWS issued a flash flood warning for southeastern Larimer County at 0220 UTC). A thunderstorm RHI scan through a convective echo over Fort Collins was done at 0253 UTC (see VCHILL link below). The near-surface echo core contained reflectivity levels of ~50 dBZ, <math>Z_{dr}</math> values of ~ +2 - 3 dB, and appreciable differential propagation phase shift. This combination of radar measurements is typical of high (~ 50 mm / hr or more) rain rates. Observers in Fort Collins reported "torrential rain" during the storm's passage. | Scattered non-severe thunderstorms developed within the CSU-CHILL coverage area during the evening of 19 June 2003 (UTC date; locally 18 June). Some of these storms produced locally intense rain rates. (The NWS issued a flash flood warning for southeastern Larimer County at 0220 UTC). A thunderstorm RHI scan through a convective echo over Fort Collins was done at 0253 UTC (see VCHILL link below). The near-surface echo core contained reflectivity levels of ~50 dBZ, <math>Z_{dr}</math> values of ~ +2 - 3 dB, and appreciable differential propagation phase shift. This combination of radar measurements is typical of high (~ 50 mm / hr or more) rain rates. Observers in Fort Collins reported "torrential rain" during the storm's passage. | ||
[http://chill.colostate.edu/java/vchill.php?sweep= | [http://chill.colostate.edu/java/vchill.php?sweep=vchill.chill.colostate.edu:2510*/dsk/dnf/data/2003/06/19/%20DIR*CHL20030619_025345%20MPRHI1%20RHI*Sweep%2001¢er=0.,0.&range=50.&plot=dBZ example in VCHILL] | ||
[[Casebook 3 June 2003|prev]] [[Casebook 29 July 2003|next]] | [[Casebook 3 June 2003|prev]] [[Casebook 29 July 2003|next]] | ||
[[Category:Casebook|20030619]] | [[Category:Casebook|20030619]] | ||
[[Category:Heavy Rain|20030619]] | [[Category:Heavy Rain|20030619]] | ||
Latest revision as of 11:17, 6 November 2009
CSU-CHILL Casebook: 19 June, 2003
Scattered non-severe thunderstorms developed within the CSU-CHILL coverage area during the evening of 19 June 2003 (UTC date; locally 18 June). Some of these storms produced locally intense rain rates. (The NWS issued a flash flood warning for southeastern Larimer County at 0220 UTC). A thunderstorm RHI scan through a convective echo over Fort Collins was done at 0253 UTC (see VCHILL link below). The near-surface echo core contained reflectivity levels of ~50 dBZ, values of ~ +2 - 3 dB, and appreciable differential propagation phase shift. This combination of radar measurements is typical of high (~ 50 mm / hr or more) rain rates. Observers in Fort Collins reported "torrential rain" during the storm's passage.
