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<br />~. <br /> <br />.r <br /> <br />their cloud observations as a means of early identification of developing <br /> <br />severe storms and making decisions to launch aircraft. <br /> <br />When it is visually impossible to see developing or moving severe storms, <br /> <br /> <br />radar becomes necessary in detecting and tracking them. <br /> <br />WKGMD #1 owns the radar system used in the WKWM program. It is a 5- <br /> <br />centimeter wavelength model WRlOO-2 which operates on a frequency of 5500 - <br /> <br />5600 MHz and develoJOs a peak power of 250 KW. The radar has a plan position <br /> <br />indiL:ator ;.PPI) for horizontal viewing on ranges of either 50, lCD, 0r 250 <br /> <br />nautical miles and has a range-height indicator (RllI) for I.orizontal and <br /> <br />vertical height m~as"re~ent.s. <br /> <br />An aircraft interrogator/transponder flight tracking system is incor- <br /> <br />porated into the radar system. Storm activity versus aircraft flight <br /> <br />movements are documented on an 8mm t~rne-lapse camera sys~cm mounted over a <br /> <br />second remote PPI display. <br /> <br />,I. <br /> <br />Additional radar specifications and interrogator/transponder speci- <br /> <br />fications are found in Appendices C and D, respectively. <br /> <br />During operational periods cloud measurements of position, height, <br /> <br />maximum intensity, and height of the 45'dBZ level are routinely recorded <br /> <br />,on a data log. General notes regarding operations, storm movements, and other <br /> <br />information is written separately on another log. Acetate overlays are <br /> <br />hand dr~wn at 20-minute intervals which outline the radar echo positions and <br /> <br />the primary storm intensity centers as well as the location of all aircraft. <br /> <br />These overlays are later transferred to paper for permanent reference <br /> <br />purposes and for post-operational analysis. <br /> <br />On the PPI used for main viewing, is drawn a semi-permanent outline of <br /> <br />the boundaries of the target area, the counties and the positions of some of <br /> <br />',the better known towns. Also, there are drawn lines for each 100 of the <br /> <br />.f <br /> <br />). <br /> <br />,',' <br /> <br />-13- <br />