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<br />30 <br /> <br />FLOOD, JULY 3I-AUGUST 1,1976, BIG THOMPSON RIVER. COLORADO <br /> <br />1150 <br /> <br />1'00 <br /> <br />1050 <br />I <br /> <br />1000 <br /> <br />95' <br /> <br />35' <br /> <br /> <br />l 30.10 <br /> <br />\ <br /> <br />30.15 <br /> <br />(....----~ . <br />, <br /> <br />---- <br /> <br />..---- <br /> <br />-67C~ <br />5S 15 <br /> <br />-.. <br /> <br />40' <br /> <br />40' <br /> <br />30.15 <br /> <br />E' <br />40,:' <br />.J <br /> <br />S%:~O.16 <br />JS:J <br /> <br />35' <br /> <br />1100 <br /> <br />1050 <br /> <br />1000 <br /> <br />o <br />I <br /> <br />100 <br />I <br /> <br />200 <br />I <br /> <br />300 <br />I <br /> <br />400 MILES <br />I <br /> <br />EXPLANATION <br /> <br />606570 <br />~.:.. <br />L.lB:J <br /> <br />AREA WHERE DEWPOINT TEMPERATURE EXCEEDED <br />60 DEGREES FAHRENHEIT <br />LINE OF EOUAL DEWPOINTTEMPERATURE. -Interval <br />5 degrees Fahrenheit <br /> <br />L <br /> <br />GEOGRAPHIC CENTER OF lOW-PRESSURE SYSTEM <br /> <br />-65- <br /> <br />7,30.21 <br />57'~-" <br /> <br />OBSERVATION STATION. -Upper left number is air <br />temperature, in degrees Fahrenheit. Lower left <br />number is dewpoint temperature, in degrees <br />Fahrenheit. Upper right number is altimeter setting, <br />in inches of mercury. lower right number is 3-l'1our <br />pressure change, in tenths of a millibar; ". =de- <br />crease, "-=increase,and '. =no change. Shatt indi- <br />cates wind direction. Barbs on shaft indicate wind <br />speed,in knots. long barb=IQ knots; short barb=5 <br />k.nots. @=calm winds, less than 2 knots. Additional <br />svmbols and notes explained below: <br />-< =Thunder heard, but no precipitation at station <br />R =Thunderstorm with rain <br />( =lighting observed <br />G24=Peak wind gust observed during last hour <br /> <br />-30.15- <br /> <br />. <br /> <br />. <br /> <br />LINE OF EaUAl ALTIMETER SmlNG, IN INCHES OF <br />MERCURY.-1nterval 0.05 inch <br />COLD FRONT. <br /> <br />. <br /> <br />- <br /> <br />STATIONARY FRONT -Dashed where dissipating <br />SQUALL LINE <br /> <br />GEOGRAPHIC CENTER OF HIGH-PRESSURE SYSTEM <br /> <br />H <br /> <br />FIGURE 25.-Regional surface analysis, 1800 MDT, July 31, 1976. <br />