Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of FRIDAY: AUGUST 27 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 100* 35.5 32.2 111 COTTONWOOD CREEK 7600 .2 .0 * 43.3 35.7 122 GRANITE CREEK 6770 -M .0 * 32.8 35.8 92 GRASSY LAKE 7265 .0 .0 100* 58.9 53.0 111 GROS VENTRE SUMMIT 8775 .0 .0 100* 24.8 24.2 103 LEWIS LAKE DIVIDE 7860 .0 .0 100* 53.3 54.0 99 PHILLIPS BENCH 8200 .0 .0 100* 43.8 42.5 103 SALT RIVER SUMMIT 7600 .0 .0 100* 29.7 25.7 116 SNAKE RIVER STATION 6920 .0 .0 100* 38.0 37.3 102 SPRING CREEK DIVIDE 9000 .4 .0 * 42.0 38.3 110 THUMB DIVIDE 7980 .0 .0 100* 33.7 30.2 112 TOGWOTEE PASS 9580 .0 .0 100* 41.3 40.5 102 TWO OCEAN PLATEAU 9360 -M .0 * 45.2 44.3 103 WILLOW CREEK 8450 .0 .0 100* 56.4 45.8 124 ----- ----- Basin wide percent of average * 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .0 100* 35.4 31.2 114 BLACK BEAR 7950 .0 .0 100* 69.5 58.5 119 CANYON 7940 .0 .0 100* 28.5 25.2 114 FISHER CREEK 9100 .0 .0 100* 53.5 55.9 96 MADISON PLATEAU 7750 .0 .0 100* 45.7 40.0 115 NORTHEAST ENTRANCE 7350 .0 .0 100* 24.0 22.8 106 PARKER PEAK 9400 .0 .0 100* 33.3 29.0 115 SYLVAN LAKE 8420 .0 .0 100* 42.0 34.3 123 THUMB DIVIDE 7980 .0 .0 100* 33.7 30.2 112 TWO OCEAN PLATEAU 9360 -M .0 * 45.2 44.3 103 WHISKEY CREEK 6800 .0 .0 100* 37.3 34.2 110 WHITE MILL 8700 .0 .0 100* 37.2 44.3 84 WOLVERINE 7650 .0 .0 100* 20.8 24.5 85 ----- ----- Basin wide percent of average * 107 WIND RIVER BURROUGHS CREEK 8750 .4 .0 * 29.2 27.4 107 COLD SPRINGS 9630 .0 .0 100* 28.5 20.9 138 DEER PARK 9700 .3 -M * 40.3 -M * HOBBS PARK 10100 .0 .0 100* 33.4 26.4 127 LITTLE WARM 9620 .2 .0 * 30.2 24.7 123 SOUTH PASS 9040 -M .0 * -M 29.2 * ST. LAWRENCE ALT 8620 .2 .0 * 24.7 19.3 129 TOGWOTEE PASS 9580 .0 .0 100* 41.3 40.5 102 TOWNSEND CREEK 8700 .3 .0 * 30.4 23.5 130 ----- ----- Basin wide percent of average * 120 BIGHORN BASIN BALD MTN. 9375 .0 .0 100* 31.0 30.7 101 BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.9 * BLACKWATER 9780 -M .0 * 37.7 33.7 112 BONE SPRINGS DIV 9350 -M .0 * 31.0 29.2 107 EVENING STAR 9200 .0 .0 100* 48.9 40.8 120 GRAVE SPRINGS 8550 .3 .0 * 22.8 22.0 104 KIRWIN 9550 .0 .0 100* 27.7 23.4 119 MARQUETTE 8760 .0 .0 100* 28.0 23.7 119 MIDDLE POWDER 7760 .2 .0 * 29.5 23.8 125 OWL CREEK 8975 .0 .0 100* 21.2 15.5 137 POWDER RIVER PASS 9480 .0 .0 100* 28.0 23.5 119 SHELL CREEK 9580 .0 .0 100* 27.8 26.0 107 SYLVAN LAKE 8420 .0 .0 100* 42.0 34.3 123 SYLVAN ROAD 8120 .0 .0 100* 28.2 29.5 96 TIMBER CREEK 7950 .0 .0 100* 21.8 19.0 115 YOUNTS PEAK 8350 .0 .0 100* 30.0 28.7 105 ----- ----- Basin wide percent of average * 113 SHOSHONE RIVER BLACKWATER 9780 -M .0 * 37.7 33.7 112 EVENING STAR 9200 .0 .0 100* 48.9 40.8 120 KIRWIN 9550 .0 .0 100* 27.7 23.4 119 MARQUETTE 8760 .0 .0 100* 28.0 23.7 119 SYLVAN LAKE 8420 .0 .0 100* 42.0 34.3 123 SYLVAN ROAD 8120 .0 .0 100* 28.2 29.5 96 YOUNTS PEAK 8350 .0 .0 100* 30.0 28.7 105 ----- ----- Basin wide percent of average * 114 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.9 * BIG GOOSE 7990 .0 -M * 23.0 -M * BONE SPRINGS DIV 9350 -M .0 * 31.0 29.2 107 BURGESS JUNCTION 7880 .2 .0 * 23.0 23.0 100 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 30.8 27.8 111 DOME LAKE 8880 .0 .0 100* 22.0 25.5 86 GRAVE SPRINGS 8550 .3 .0 * 22.8 22.0 104 HANSEN SAWMILL 8760 .4 .0 * 21.2 18.8 113 MIDDLE POWDER 7760 .2 .0 * 29.5 23.8 125 POWDER RIVER PASS 9480 .0 .0 100* 28.0 23.5 119 SUCKER CREEK 8880 .7 .0 * 28.5 26.7 108 TIE CREEK 6870 .2 -M * 25.5 22.2 116 ----- ----- Basin wide percent of average * 109 BELLE FOURCHE BLIND PARK 6890 .3 .0 * 30.7 26.4 117 NORTH RAPID CREEK 6130 .2 -M * 28.9 -M * WARREN PEAK 6520 .2 .0 * 29.7 20.3 147 ----- ----- Basin wide percent of average * 130 UPPER N. PLATTE RIVER COLUMBINE 9400 .2 .0 * 35.8 35.7 101 DIVIDE PEAK 8800 .0 .0 100* 39.3 35.0 113 ELK RIVER 8700 .0 .0 100* 36.9 29.0 127 JOE WRIGHT 10120 .0 .0 100* 42.7 42.7 100 NORTH FRENCH CREEK 10100 .0 .0 100* -M 37.9 * OLD BATTLE 10000 .2 .0 * -M 45.3 * SOUTH BRUSH CREEK 8400 -M .0 * 30.9 28.9 107 TOWER 10500 .3 .0 * 58.2 55.8 105 WEBBER SPRINGS 9200 .0 .0 100* 42.0 38.7 109 WILLOW CREEK PASS 9540 .0 .0 100* 24.8 24.0 103 ----- ----- Basin wide percent of average * 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .4 .0 * 40.5 32.3 126 CASPER MTN. 7900 .0 .0 100* 29.7 28.3 105 DEADMAN HILL 10220 .3 .0 * 30.5 30.7 100 DEER PARK 9700 .3 -M * 40.3 -M * LAPRELE CREEK 8320 .0 .0 100* 27.5 23.5 118 RENO HILL 8400 .0 .0 100* 31.8 29.4 109 ROACH 9700 .0 .0 100* 33.2 35.5 94 SAND LAKE 10080 .2 .0 * 47.0 33.3 142 SOUTH PASS 9040 -M .0 * -M 29.2 * WINDY PEAK 7840 .2 .0 * 25.3 20.8 122 ----- ----- Basin wide percent of average * 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 27.4 24.0 114 DIVIDE PEAK 8800 .0 .0 100* 39.3 35.0 113 OLD BATTLE 10000 .2 .0 * -M 45.3 * SANDSTONE RS 8150 .0 .0 100* 31.7 30.7 104 WHISKEY PARK 8950 .0 .0 100* 44.5 42.8 105 ----- ----- Basin wide percent of average * 108 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 .0 100* 24.8 24.7 101 BLIND BULL SUM 8650 .2 .0 * 33.9 33.4 102 EAST RIM DIVIDE 7930 .4 .0 * 22.5 23.0 98 ELKHART PARK G.S. 9400 .3 .0 * 25.7 24.3 106 GROS VENTRE SUMMIT 8775 .0 .0 100* 24.8 24.2 103 KENDALL R.S. 7740 .0 .0 100* 25.0 23.5 107 LOOMIS PARK 8240 .0 .0 100* 29.7 28.5 104 NEW FORK LAKE 8340 .0 .0 100* 22.0 22.0 100 SNIDER BASIN 8250 .0 .0 100* 27.5 23.0 120 SPRING CREEK DIVIDE 9000 .4 .0 * 42.0 38.3 110 TRIPLE PEAK 8500 .0 .0 100* 44.0 44.7 99 ----- ----- Basin wide percent of average * 104 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 22.8 20.4 112 HEWINTA 9500 .0 .0 100* 25.9 24.2 108 HICKERSON PARK 9150 .5 .0 * 20.7 20.4 102 HOLE-IN-ROCK 9150 .0 .0 100* 21.4 20.4 105 INDIAN CREEK 9425 -M .0 * -M 37.0 * KELLEY R.S. 8180 .0 .0 100* 29.5 28.5 104 STEEL CREEK PARK 10100 .0 .0 100* 31.3 28.2 112 ----- ----- Basin wide percent of average * 107 UPPER BEAR RIVER BUG LAKE 7950 .0 .0 100* 33.5 28.0 120 HAYDEN FORK 9400 .3 .0 * 34.9 31.4 112 KELLEY R.S. 8180 .0 .0 100* 29.5 28.5 104 LILY LAKE 9050 -M .0 * 31.3 26.0 121 MONTE CRISTO 8960 .0 .0 100* 43.3 38.0 114 SALT RIVER SUMMIT 7600 .0 .0 100* 29.7 25.7 116 TRIAL LAKE 9960 .0 .0 100* 37.8 37.3 102 ----- ----- Basin wide percent of average * 112 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1961-90. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.