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 22 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .3 .0 * 50.1 31.8 158 COTTONWOOD CREEK 7600 .0 .0 100* 49.6 35.3 141 GRANITE CREEK 6770 .0 .0 100* 43.5 35.3 123 GRASSY LAKE 7265 .0 .0 100* 73.7 52.6 140 GROS VENTRE SUMMIT 8775 .0 .0 100* 32.5 23.9 136 LEWIS LAKE DIVIDE 7860 .0 .0 100* 73.8 53.5 138 PHILLIPS BENCH 8200 .0 .0 100* 62.4 42.2 148 SALT RIVER SUMMIT 7600 .1 .0 * 35.5 25.3 140 SNAKE RIVER STATION 6920 .0 .0 100* 51.7 36.9 140 SPRING CREEK DIVIDE 9000 .0 .0 100* 44.9 37.9 118 THUMB DIVIDE 7980 .0 .0 100* 47.4 29.8 159 TOGWOTEE PASS 9580 .1 .0 * 54.5 40.2 136 TWO OCEAN PLATEAU 9360 .0 .0 100* 61.7 43.9 141 WILLOW CREEK 8450 .0 .0 100* 68.2 45.3 151 ----- ----- Basin wide percent of average * 140 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .0 100* 43.9 30.8 143 BLACK BEAR 7950 -M .0 * 85.9 58.1 148 CANYON 7940 .0 .0 100* 35.5 24.7 144 FISHER CREEK 9100 .0 .0 100* 71.0 55.3 128 MADISON PLATEAU 7750 .0 .0 100* 53.9 39.5 136 NORTHEAST ENTRANCE 7350 .0 .0 100* 33.4 22.4 149 PARKER PEAK 9400 .1 .0 * 36.9 28.5 129 SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145 THUMB DIVIDE 7980 .0 .0 100* 47.4 29.8 159 TWO OCEAN PLATEAU 9360 .0 .0 100* 61.7 43.9 141 WHISKEY CREEK 6800 .0 .0 100* 42.0 33.8 124 WHITE MILL 8700 .0 .0 100* 55.8 43.8 127 WOLVERINE 7650 .0 .0 100* 26.1 24.0 109 ----- ----- Basin wide percent of average * 137 WIND RIVER BURROUGHS CREEK 8750 .0 .0 100* 38.7 27.0 143 CHRISTINA LAKE 9980 -M .0 * -M 28.5 * COLD SPRINGS 9630 .1 .0 * 25.6 20.6 124 HOBBS PARK 10100 .0 .0 100* 26.3 26.0 101 LITTLE WARM 9620 .0 .0 100* 33.1 24.3 136 SOUTH PASS 9040 .0 .0 100* 34.1 28.8 118 ST. LAWRENCE ALT 8620 .1 .0 * 23.6 19.0 124 TOGWOTEE PASS 9580 .1 .0 * 54.5 40.2 136 TOWNSEND CREEK 8700 .1 .0 * 25.6 23.1 111 ----- ----- Basin wide percent of average * 125 BIGHORN BASIN BALD MTN. 9375 .1 .0 * 37.1 30.3 122 BEAR TRAP MEADOW 7900 .0 .0 100* 23.8 18.5 129 BLACKWATER 9780 .0 .0 100* 46.5 33.0 141 BONE SPRINGS DIV 9350 .0 .0 100* 32.8 28.8 114 EVENING STAR 9200 .0 .0 100* 57.1 40.0 143 GRAVE SPRINGS 8550 .1 -M * 23.9 21.6 111 KIRWIN 9550 .0 .0 100* 31.2 23.0 136 LOST CREEK 8080 -M .0 * -M 23.9 * MARQUETTE 8760 .2 .0 * 29.1 23.3 125 MIDDLE POWDER 7760 .0 .0 100* 31.2 23.5 133 OWL CREEK 8975 .0 .0 100* 18.4 15.2 121 POWDER RIVER PASS 9480 .1 .0 * 33.5 23.3 144 SHELL CREEK 9580 .1 .0 * 28.3 25.8 110 SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145 SYLVAN ROAD 8120 .0 .0 100* 38.3 29.0 132 TIMBER CREEK 7950 .1 .0 * 21.9 18.7 117 YOUNTS PEAK 8350 .0 .0 100* 40.8 28.3 144 ----- ----- Basin wide percent of average * 130 SHOSHONE RIVER BLACKWATER 9780 .0 .0 100* 46.5 33.0 141 EVENING STAR 9200 .0 .0 100* 57.1 40.0 143 KIRWIN 9550 .0 .0 100* 31.2 23.0 136 MARQUETTE 8760 .2 .0 * 29.1 23.3 125 SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145 SYLVAN ROAD 8120 .0 .0 100* 38.3 29.0 132 YOUNTS PEAK 8350 .0 .0 100* 40.8 28.3 144 ----- ----- Basin wide percent of average * 139 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .0 100* 23.8 18.5 129 BONE SPRINGS DIV 9350 .0 .0 100* 32.8 28.8 114 BURGESS JUNCTION 7880 .0 .0 100* 28.8 22.8 126 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.7 27.4 127 DOME LAKE 8880 .0 .0 100* 31.4 25.3 124 GRAVE SPRINGS 8550 .1 -M * 23.9 21.6 111 HANSEN SAWMILL 8760 .0 .0 100* 25.3 18.4 138 LOST CREEK 8080 -M .0 * -M 23.9 * MIDDLE POWDER 7760 .0 .0 100* 31.2 23.5 133 POWDER RIVER PASS 9480 .1 .0 * 33.5 23.3 144 SUCKER CREEK 8880 .0 .0 100* 32.1 26.3 122 TIE CREEK 6870 .2 -M * 33.7 21.9 154 ----- ----- Basin wide percent of average * 128 BELLE FOURCHE BLIND PARK 6890 .1 .0 * 30.8 25.9 119 NORTH RAPID CREEK 6130 .2 -M * 35.8 -M * WARREN PEAK 6520 .0 .0 100* 34.3 19.8 173 ----- ----- Basin wide percent of average * 142 UPPER N. PLATTE RIVER COLUMBINE 9400 .0 .0 100* 46.8 35.2 133 DIVIDE PEAK 8800 .0 .0 100* 36.1 34.7 104 ELK RIVER 8700 .0 .0 100* 38.1 28.7 133 JOE WRIGHT 10120 .0 .0 100* 44.1 42.1 105 NORTH FRENCH CREEK 10100 .0 .0 100* 45.4 37.4 121 OLD BATTLE 10000 .0 .0 100* 54.7 44.9 122 SOUTH BRUSH CREEK 8400 .0 .0 100* -M 28.5 * TOWER 10500 .3 .0 * 69.9 55.2 127 WEBBER SPRINGS 9200 -M .0 * -M 38.3 * WILLOW CREEK PASS 9540 .0 .0 100* 29.1 23.6 123 ----- ----- Basin wide percent of average * 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M .0 * 33.9 31.9 106 CASPER MTN. 7900 .0 .0 100* 32.3 27.9 116 CHRISTINA LAKE 9980 -M .0 * -M 28.5 * DEADMAN HILL 10220 .0 .0 100* 31.8 30.3 105 LAPRELE CREEK 8320 .0 .0 100* 25.5 23.2 110 RENO HILL 8400 .1 .0 * 32.2 29.1 111 ROACH 9700 .0 .0 100* 35.5 35.3 101 SAND LAKE 10080 -M .0 * 45.2 32.9 137 SOUTH PASS 9040 .0 .0 100* 34.1 28.8 118 WINDY PEAK 7840 .1 .0 * 23.1 20.5 113 ----- ----- Basin wide percent of average * 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * 19.5 23.7 82 DIVIDE PEAK 8800 .0 .0 100* 36.1 34.7 104 OLD BATTLE 10000 .0 .0 100* 54.7 44.9 122 SANDSTONE RS 8150 .0 .0 100* 31.7 30.2 105 WHISKEY PARK 8950 .0 .0 100* 49.0 42.4 116 ----- ----- Basin wide percent of average * 109 UPPER GREEN RIVER BIG SANDY OPENING 9100 .4 .0 * 24.7 24.4 101 BLIND BULL SUM 8650 .0 .0 100* 47.9 33.1 145 EAST RIM DIVIDE 7930 .1 .0 * 27.4 22.8 120 ELKHART PARK G.S. 9400 .1 .0 * 30.2 24.0 126 GROS VENTRE SUMMIT 8775 .0 .0 100* 32.5 23.9 136 KENDALL R.S. 7740 .0 .0 100* 34.1 23.3 146 LOOMIS PARK 8240 .0 .0 100* 39.6 28.2 140 NEW FORK LAKE 8340 .0 .0 100* 23.4 21.7 108 SNIDER BASIN 8250 .1 .0 * 26.3 22.8 115 SPRING CREEK DIVIDE 9000 .0 .0 100* 44.9 37.9 118 TRIPLE PEAK 8500 .0 .0 100* 54.0 44.3 122 ----- ----- Basin wide percent of average * 126 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 24.3 20.0 122 HEWINTA 9500 .1 .0 * 25.5 23.8 107 HICKERSON PARK 9150 .0 .0 100* 18.8 20.0 94 HOLE-IN-ROCK 9150 .0 .0 100* 19.7 20.0 98 INDIAN CREEK 9425 .0 .0 100* 43.1 36.7 117 KELLEY R.S. 8180 .0 .0 100* 40.6 28.1 144 STEEL CREEK PARK 10100 .0 .0 100* 27.3 27.7 99 ----- ----- Basin wide percent of average * 113 UPPER BEAR RIVER BUG LAKE 7950 .2 .0 * 42.0 27.7 152 HAYDEN FORK 9400 .0 .0 100* 38.6 31.1 124 KELLEY R.S. 8180 .0 .0 100* 40.6 28.1 144 LILY LAKE 9050 -M .0 * 30.0 25.6 117 MONTE CRISTO 8960 .0 .0 100* 48.0 37.7 127 SALT RIVER SUMMIT 7600 .1 .0 * 35.5 25.3 140 TRIAL LAKE 9960 .3 .0 * 47.0 36.9 127 ----- ----- Basin wide percent of average * 133 ----------------------------------------------------------------------------- -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.