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 THURSDAY: SEPTEMBER 18 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .5 .0 * 51.8 33.3 156 COTTONWOOD CREEK 7600 .3 .0 * -M 36.8 * GRANITE CREEK 6770 .1 .0 * 45.5 37.2 122 GRASSY LAKE 7265 .1 .0 * 75.9 54.8 139 GROS VENTRE SUMMIT 8775 .1 .0 * 34.7 25.2 138 LEWIS LAKE DIVIDE 7860 .0 .0 100* 75.7 55.8 136 PHILLIPS BENCH 8200 .1 .0 * 65.4 43.9 149 SALT RIVER SUMMIT 7600 -M .0 * 38.6 26.7 145 SNAKE RIVER STATION 6920 .0 .0 100* 53.4 38.5 139 SPRING CREEK DIVIDE 9000 .0 .0 100* 46.3 39.4 118 THUMB DIVIDE 7980 .0 .0 100* 48.9 31.2 157 TOGWOTEE PASS 9580 .1 .0 * 56.5 41.9 135 TWO OCEAN PLATEAU 9360 .2 .0 * 63.2 45.9 138 WILLOW CREEK 8450 .3 .0 * -M 47.2 * ----- ----- Basin wide percent of average * 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 .0 .1 0* 45.1 32.2 140 BLACK BEAR 7950 .0 .1 0* 88.8 60.4 147 CANYON 7940 .0 .0 100* 37.3 26.7 140 FISHER CREEK 9100 .1 .1 100* 74.8 57.7 130 MADISON PLATEAU 7750 .1 .0 * 57.2 41.6 138 NORTHEAST ENTRANCE 7350 .2 .0 * 36.1 24.2 149 PARKER PEAK 9400 .2 .2 100* 38.7 30.7 126 SYLVAN LAKE 8420 .1 .1 100* 51.0 36.1 141 THUMB DIVIDE 7980 .0 .0 100* 48.9 31.2 157 TWO OCEAN PLATEAU 9360 .2 .0 * 63.2 45.9 138 WHISKEY CREEK 6800 .1 .0 * 45.0 35.6 126 WHITE MILL 8700 .1 .1 100* 59.0 45.9 129 WOLVERINE 7650 .0 .0 100* 28.4 25.8 110 ----- ----- Basin wide percent of average 71* 136 WIND RIVER BURROUGHS CREEK 8750 .1 .0 * 40.7 28.8 141 CHRISTINA LAKE 9980 -M .1 * -M 30.2 * COLD SPRINGS 9630 .3 .0 * 27.2 22.2 123 HOBBS PARK 10100 .0 .1 0* 27.4 27.6 99 LITTLE WARM 9620 .0 .0 100* 36.7 26.1 141 SOUTH PASS 9040 .0 .0 100* 34.5 30.3 114 ST. LAWRENCE ALT 8620 .4 .0 * 24.8 20.3 122 TOGWOTEE PASS 9580 .1 .0 * 56.5 41.9 135 TOWNSEND CREEK 8700 .2 .0 * 26.1 24.6 106 ----- ----- Basin wide percent of average 0* 123 BIGHORN BASIN BALD MTN. 9375 .2 .1 200* 37.2 32.2 116 BEAR TRAP MEADOW 7900 .1 .0 * 25.1 20.0 126 BLACKWATER 9780 .1 .1 100* 49.0 36.0 136 BONE SPRINGS DIV 9350 .2 .2 100* 33.6 31.0 108 EVENING STAR 9200 .0 .1 0* 60.1 43.4 138 GRAVE SPRINGS 8550 .1 -M * 25.0 23.3 107 KIRWIN 9550 .1 .1 100* 33.9 25.2 135 LOST CREEK 8080 -M .0 * -M 25.4 * MARQUETTE 8760 .5 .1 500* 30.3 25.2 120 MIDDLE POWDER 7760 .2 .1 200* 32.0 25.0 128 OWL CREEK 8975 .1 .1 100* 19.3 16.5 117 POWDER RIVER PASS 9480 .3 .0 * 35.5 24.8 143 SHELL CREEK 9580 .2 .1 200* 28.9 27.6 105 SYLVAN LAKE 8420 .1 .1 100* 51.0 36.1 141 SYLVAN ROAD 8120 .1 .1 100* 40.2 31.3 128 TIMBER CREEK 7950 -M .0 * 22.5 20.3 111 YOUNTS PEAK 8350 -M .1 * 43.9 30.3 145 ----- ----- Basin wide percent of average 150* 127 SHOSHONE RIVER BLACKWATER 9780 .1 .1 100* 49.0 36.0 136 EVENING STAR 9200 .0 .1 0* 60.1 43.4 138 KIRWIN 9550 .1 .1 100* 33.9 25.2 135 MARQUETTE 8760 .5 .1 500* 30.3 25.2 120 SYLVAN LAKE 8420 .1 .1 100* 51.0 36.1 141 SYLVAN ROAD 8120 .1 .1 100* 40.2 31.3 128 YOUNTS PEAK 8350 -M .1 * 43.9 30.3 145 ----- ----- Basin wide percent of average 150* 136 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 .0 * 25.1 20.0 126 BONE SPRINGS DIV 9350 .2 .2 100* 33.6 31.0 108 BURGESS JUNCTION 7880 .1 .1 100* 29.5 24.3 121 CLOUD PEAK RESERVOIR 9860 .0 .0 100* 36.6 29.3 125 DOME LAKE 8880 .1 .1 100* 32.4 27.1 120 GRAVE SPRINGS 8550 .1 -M * 25.0 23.3 107 HANSEN SAWMILL 8760 .0 .0 100* 26.5 20.0 133 LOST CREEK 8080 -M .0 * -M 25.4 * MIDDLE POWDER 7760 .2 .1 200* 32.0 25.0 128 POWDER RIVER PASS 9480 .3 .0 * 35.5 24.8 143 SUCKER CREEK 8880 .1 .0 * 33.1 28.1 118 TIE CREEK 6870 .2 -M * 34.1 23.4 146 ----- ----- Basin wide percent of average 120* 124 BELLE FOURCHE BLIND PARK 6890 .4 .0 * 31.9 27.7 115 NORTH RAPID CREEK 6130 .5 -M * 37.7 -M * WARREN PEAK 6520 -M .0 * -M 21.4 * ----- ----- Basin wide percent of average * 115* UPPER N. PLATTE RIVER COLUMBINE 9400 .1 .0 * 48.0 36.6 131 DIVIDE PEAK 8800 .0 .0 100* 37.3 36.6 102 ELK RIVER 8700 .0 .0 100* 39.2 30.3 129 JOE WRIGHT 10120 .1 .0 * 46.3 44.6 104 NORTH FRENCH CREEK 10100 .1 .0 * 46.8 39.3 119 OLD BATTLE 10000 .2 .1 200* 55.6 47.0 118 SOUTH BRUSH CREEK 8400 .2 .0 * 30.2 30.3 100 TOWER 10500 .0 .0 100* 71.7 57.5 125 WEBBER SPRINGS 9200 .0 .0 100* 48.8 40.4 121 WILLOW CREEK PASS 9540 .0 .0 100* 30.2 25.4 119 ----- ----- Basin wide percent of average 200* 117 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .0 .0 100* 44.2 33.4 132 CASPER MTN. 7900 .1 .0 * 32.9 29.2 113 CHRISTINA LAKE 9980 -M .1 * -M 30.2 * DEADMAN HILL 10220 .1 .0 * 33.4 31.9 105 LAPRELE CREEK 8320 .0 .0 100* 26.7 24.7 108 RENO HILL 8400 .1 .0 * -M 30.2 * ROACH 9700 .0 .0 100* 36.0 36.9 98 SAND LAKE 10080 .2 .0 * 46.2 34.7 133 SOUTH PASS 9040 .0 .0 100* 34.5 30.3 114 WINDY PEAK 7840 .3 .0 * 23.7 21.5 110 ----- ----- Basin wide percent of average * 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * 20.4 25.3 81 DIVIDE PEAK 8800 .0 .0 100* 37.3 36.6 102 OLD BATTLE 10000 .2 .1 200* 55.6 47.0 118 SANDSTONE RS 8150 .0 .0 100* 33.4 32.3 103 WHISKEY PARK 8950 .0 .0 100* 50.6 44.0 115 ----- ----- Basin wide percent of average 200* 107 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 .0 100* 25.7 25.7 100 BLIND BULL SUM 8650 1.2 .0 * 49.8 34.4 145 EAST RIM DIVIDE 7930 .2 .0 * 29.6 24.0 123 ELKHART PARK G.S. 9400 .2 .0 * 33.3 25.2 132 GROS VENTRE SUMMIT 8775 .1 .0 * 34.7 25.2 138 KENDALL R.S. 7740 .1 .0 * 36.3 24.6 148 LOOMIS PARK 8240 .0 .0 100* 44.2 29.8 148 NEW FORK LAKE 8340 .0 .0 100* 25.9 22.9 113 SNIDER BASIN 8250 .2 .0 * 27.3 24.0 114 SPRING CREEK DIVIDE 9000 .0 .0 100* 46.3 39.4 118 TRIPLE PEAK 8500 .1 .0 * 55.8 46.3 121 ----- ----- Basin wide percent of average * 127 LOWER GREEN RIVER HAMS FORK 7840 .6 .0 * -M 21.1 * HEWINTA 9500 .2 .0 * 27.7 25.2 110 HICKERSON PARK 9150 .0 .0 100* 20.1 21.3 94 HOLE-IN-ROCK 9150 .0 .0 100* 21.4 21.3 100 INDIAN CREEK 9425 -M .0 * -M 38.3 * KELLEY R.S. 8180 .8 .0 * -M 29.7 * STEEL CREEK PARK 10100 .0 .1 0* 29.4 29.6 99 ----- ----- Basin wide percent of average 0* 101 UPPER BEAR RIVER BUG LAKE 7950 .1 .0 * 43.7 29.2 150 HAYDEN FORK 9400 .0 .0 100* 41.4 32.7 127 KELLEY R.S. 8180 .8 .0 * -M 29.7 * LILY LAKE 9050 .4 .0 * 32.2 27.1 119 MONTE CRISTO 8960 .6 .1 600* 51.6 39.5 131 SALT RIVER SUMMIT 7600 -M .0 * 38.6 26.7 145 TRIAL LAKE 9960 .5 .1 500* 49.0 38.8 126 ----- ----- Basin wide percent of average 550* 132 ----------------------------------------------------------------------------- -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.