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 WEDNESDAY: SEPTEMBER 3 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .1 .0 * 50.5 32.4 156 COTTONWOOD CREEK 7600 .0 .0 100* 49.8 35.9 139 GRANITE CREEK 6770 .1 .0 * 43.6 36.1 121 GRASSY LAKE 7265 .0 .0 100* 74.1 53.5 139 GROS VENTRE SUMMIT 8775 .0 .0 100* 32.6 24.4 134 LEWIS LAKE DIVIDE 7860 .1 .0 * 74.0 54.4 136 PHILLIPS BENCH 8200 .1 .0 * 62.9 42.8 147 SALT RIVER SUMMIT 7600 .2 .0 * 35.6 25.9 137 SNAKE RIVER STATION 6920 .0 .0 100* 51.9 37.5 138 SPRING CREEK DIVIDE 9000 .1 .0 * 45.2 38.5 117 THUMB DIVIDE 7980 .1 .0 * 47.9 30.3 158 TOGWOTEE PASS 9580 .1 .0 * 54.8 40.8 134 TWO OCEAN PLATEAU 9360 .2 .0 * 62.0 44.7 139 WILLOW CREEK 8450 .0 .0 100* 68.4 46.1 148 ----- ----- Basin wide percent of average * 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .0 100* 44.3 31.4 141 BLACK BEAR 7950 -M .0 * 86.5 59.0 147 CANYON 7940 .0 .0 100* 36.3 25.6 142 FISHER CREEK 9100 .1 .0 * 71.5 56.3 127 MADISON PLATEAU 7750 .1 .0 * 54.6 40.4 135 NORTHEAST ENTRANCE 7350 .1 .0 * 34.0 23.1 147 PARKER PEAK 9400 .2 .0 * 37.4 29.4 127 SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142 THUMB DIVIDE 7980 .1 .0 * 47.9 30.3 158 TWO OCEAN PLATEAU 9360 .2 .0 * 62.0 44.7 139 WHISKEY CREEK 6800 .1 .0 * 42.7 34.5 124 WHITE MILL 8700 .0 .0 100* 56.2 44.7 126 WOLVERINE 7650 .0 .0 100* 27.3 24.7 111 ----- ----- Basin wide percent of average * 136 WIND RIVER BURROUGHS CREEK 8750 .1 .0 * 39.1 27.7 141 CHRISTINA LAKE 9980 -M .0 * -M 29.1 * COLD SPRINGS 9630 .2 .0 * 25.9 21.1 123 HOBBS PARK 10100 .0 .0 100* 26.4 26.6 99 LITTLE WARM 9620 .0 .0 100* 33.4 25.0 134 SOUTH PASS 9040 .0 .0 100* 34.2 29.3 117 ST. LAWRENCE ALT 8620 .2 .0 * 24.0 19.4 124 TOGWOTEE PASS 9580 .1 .0 * 54.8 40.8 134 TOWNSEND CREEK 8700 .1 .0 * 25.6 23.6 108 ----- ----- Basin wide percent of average * 123 BIGHORN BASIN BALD MTN. 9375 .1 .0 * 36.9 30.9 119 BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.0 127 BLACKWATER 9780 .1 .0 * 47.3 34.3 138 BONE SPRINGS DIV 9350 .1 .0 * 33.0 29.6 111 EVENING STAR 9200 .0 .0 100* 57.5 41.5 139 GRAVE SPRINGS 8550 .1 -M * 24.2 22.2 109 KIRWIN 9550 .0 .0 100* 32.3 23.8 136 LOST CREEK 8080 -M .0 * -M 24.4 * MARQUETTE 8760 .3 .0 * 29.7 24.0 124 MIDDLE POWDER 7760 .1 .0 * 31.2 24.0 130 OWL CREEK 8975 .0 .0 100* 18.6 15.7 118 POWDER RIVER PASS 9480 .2 .0 * 34.7 23.8 146 SHELL CREEK 9580 .1 .0 * 28.7 26.4 109 SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142 SYLVAN ROAD 8120 .0 .0 100* 38.6 30.0 129 TIMBER CREEK 7950 -M .0 * 22.0 19.3 114 YOUNTS PEAK 8350 1.5 .0 * 41.9 29.1 144 ----- ----- Basin wide percent of average * 128 SHOSHONE RIVER BLACKWATER 9780 .1 .0 * 47.3 34.3 138 EVENING STAR 9200 .0 .0 100* 57.5 41.5 139 KIRWIN 9550 .0 .0 100* 32.3 23.8 136 MARQUETTE 8760 .3 .0 * 29.7 24.0 124 SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142 SYLVAN ROAD 8120 .0 .0 100* 38.6 30.0 129 YOUNTS PEAK 8350 1.5 .0 * 41.9 29.1 144 ----- ----- Basin wide percent of average * 136 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.0 127 BONE SPRINGS DIV 9350 .1 .0 * 33.0 29.6 111 BURGESS JUNCTION 7880 .0 .0 100* 29.0 23.2 125 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.7 28.1 127 DOME LAKE 8880 .0 .0 100* 31.8 25.9 123 GRAVE SPRINGS 8550 .1 -M * 24.2 22.2 109 HANSEN SAWMILL 8760 .0 .0 100* 26.0 19.0 137 LOST CREEK 8080 -M .0 * -M 24.4 * MIDDLE POWDER 7760 .1 .0 * 31.2 24.0 130 POWDER RIVER PASS 9480 .2 .0 * 34.7 23.8 146 SUCKER CREEK 8880 .0 .0 100* 32.8 27.0 121 TIE CREEK 6870 .1 -M * 34.0 22.3 152 ----- ----- Basin wide percent of average * 127 BELLE FOURCHE BLIND PARK 6890 .2 .0 * 31.4 26.7 118 NORTH RAPID CREEK 6130 .3 -M * 37.5 -M * WARREN PEAK 6520 -M .0 * -M 20.5 * ----- ----- Basin wide percent of average * 118* UPPER N. PLATTE RIVER COLUMBINE 9400 .0 .0 100* 46.9 35.9 131 DIVIDE PEAK 8800 -M .0 * 36.4 35.4 103 ELK RIVER 8700 .0 .0 100* 38.4 29.3 131 JOE WRIGHT 10120 .0 .0 100* 44.4 43.1 103 NORTH FRENCH CREEK 10100 .0 .0 100* 45.9 38.2 120 OLD BATTLE 10000 .0 .0 100* 55.0 45.6 121 SOUTH BRUSH CREEK 8400 .1 .0 * 29.3 29.2 100 TOWER 10500 .1 .0 * 70.0 56.2 125 WEBBER SPRINGS 9200 .0 .0 100* 47.9 39.0 123 WILLOW CREEK PASS 9540 .0 .0 100* 29.5 24.4 121 ----- ----- Basin wide percent of average * 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 43.8 32.5 135 CASPER MTN. 7900 .0 .0 100* 32.5 28.4 114 CHRISTINA LAKE 9980 -M .0 * -M 29.1 * DEADMAN HILL 10220 .0 .0 100* 32.4 30.9 105 LAPRELE CREEK 8320 .0 .0 100* 26.3 23.8 111 RENO HILL 8400 .1 .0 * 32.3 29.5 109 ROACH 9700 .0 .0 100* 35.6 35.8 99 SAND LAKE 10080 .0 .0 100* 45.5 33.5 136 SOUTH PASS 9040 .0 .0 100* 34.2 29.3 117 WINDY PEAK 7840 .2 .0 * 23.5 20.9 112 ----- ----- Basin wide percent of average * 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * -M 24.2 * DIVIDE PEAK 8800 -M .0 * 36.4 35.4 103 OLD BATTLE 10000 .0 .0 100* 55.0 45.6 121 SANDSTONE RS 8150 .0 .0 100* 32.3 31.1 104 WHISKEY PARK 8950 -M .0 * 49.5 43.0 115 ----- ----- Basin wide percent of average * 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 .0 100* 24.8 24.9 100 BLIND BULL SUM 8650 .0 .0 100* 48.3 33.6 144 EAST RIM DIVIDE 7930 .1 .0 * 27.9 23.3 120 ELKHART PARK G.S. 9400 .1 .0 * 30.8 24.5 126 GROS VENTRE SUMMIT 8775 .0 .0 100* 32.6 24.4 134 KENDALL R.S. 7740 .2 .0 * 34.2 23.8 144 LOOMIS PARK 8240 -M .0 * -M 28.8 * NEW FORK LAKE 8340 .0 .0 100* 23.7 22.2 107 SNIDER BASIN 8250 .2 .0 * 26.5 23.3 114 SPRING CREEK DIVIDE 9000 .1 .0 * 45.2 38.5 117 TRIPLE PEAK 8500 .0 .0 100* 54.0 45.1 120 ----- ----- Basin wide percent of average * 123 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 24.4 20.5 119 HEWINTA 9500 .2 .0 * 26.7 24.4 109 HICKERSON PARK 9150 .0 .0 100* 19.2 20.6 93 HOLE-IN-ROCK 9150 .0 .0 100* 20.4 20.6 99 INDIAN CREEK 9425 .0 .0 100* 43.1 37.3 116 KELLEY R.S. 8180 .0 .0 100* 40.7 28.7 142 STEEL CREEK PARK 10100 .0 .0 100* 27.8 28.5 98 ----- ----- Basin wide percent of average * 112 UPPER BEAR RIVER BUG LAKE 7950 .2 .0 * 42.0 28.2 149 HAYDEN FORK 9400 .0 .0 100* 38.2 31.6 121 KELLEY R.S. 8180 .0 .0 100* 40.7 28.7 142 LILY LAKE 9050 .2 .0 * 30.6 26.2 117 MONTE CRISTO 8960 .3 .0 * 48.5 38.4 126 SALT RIVER SUMMIT 7600 .2 .0 * 35.6 25.9 137 TRIAL LAKE 9960 -M .0 * 47.4 37.7 126 ----- ----- Basin wide percent of average * 131 ----------------------------------------------------------------------------- -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.