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 SATURDAY: MAY 17 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 12.8 4.2 305 39.0 26.6 147 COTTONWOOD CREEK 7600 20.1 12.4 162 39.8 29.7 134 GRANITE CREEK 6770 15.9 6.6 241 35.7 28.3 126 GRASSY LAKE 7265 32.5 25.4 128 61.6 44.2 139 GROS VENTRE SUMMIT 8775 15.9 8.9 179 23.2 19.1 121 LEWIS LAKE DIVIDE 7860 44.1 28.4 155 64.1 44.9 143 PHILLIPS BENCH 8200 -M 24.4 * -M 35.4 * SALT RIVER SUMMIT 7600 5.7 .0 * 26.9 20.3 133 SNAKE RIVER STATION 6920 4.6 10.1 46 41.1 31.0 133 SPRING CREEK DIVIDE 9000 29.3 25.2 116 37.4 32.3 116 THUMB DIVIDE 7980 16.7 9.9 169 37.4 24.9 150 TOGWOTEE PASS 9580 30.0 25.7 117 40.0 33.7 119 TWO OCEAN PLATEAU 9360 43.4 25.9 168 -M 36.6 * WILLOW CREEK 8450 33.6 26.8 125 53.6 38.2 140 ----- ----- Basin wide percent of average 143 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 24.3 * 35.4 23.2 153 BLACK BEAR 7950 -M 35.9 * -M 48.6 * CANYON 7940 12.0 5.9 203 29.7 17.6 169 FISHER CREEK 9100 -M 36.7 * -M 44.7 * MADISON PLATEAU 7750 29.4 17.6 167 46.4 31.7 146 NORTHEAST ENTRANCE 7350 1.1 2.3 48 23.4 15.2 154 PARKER PEAK 9400 32.4 22.2 146 -M 19.9 * SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153 THUMB DIVIDE 7980 16.7 9.9 169 37.4 24.9 150 TWO OCEAN PLATEAU 9360 43.4 25.9 168 -M 36.6 * WHISKEY CREEK 6800 -M 8.5 * -M 26.3 * WHITE MILL 8700 37.2 24.3 153 -M 34.7 * WOLVERINE 7650 -M 2.6 * 19.1 16.7 114 ----- ----- Basin wide percent of average 159 149 WIND RIVER BURROUGHS CREEK 8750 16.9 6.3 268 29.1 21.0 139 CHRISTINA LAKE 9980 18.5 16.3 113 27.9 21.9 127 COLD SPRINGS 9630 -M 2.5 * 16.8 14.6 115 HOBBS PARK 10100 19.3 16.0 121 19.7 19.2 103 LITTLE WARM 9620 9.2 4.8 192 24.7 17.8 139 SOUTH PASS 9040 -M 15.7 * -M 22.4 * ST. LAWRENCE ALT 8620 1.6 2.1 76 16.4 13.7 120 TOGWOTEE PASS 9580 30.0 25.7 117 40.0 33.7 119 TOWNSEND CREEK 8700 4.7 5.6 84 18.4 17.1 108 ----- ----- Basin wide percent of average 130 121 BIGHORN BASIN BALD MTN. 9375 22.5 23.7 95 23.0 23.1 100 BEAR TRAP MEADOW 7900 .1 1.2 8 13.2 12.3 107 BLACKWATER 9780 39.1 24.1 162 34.4 22.4 154 BONE SPRINGS DIV 9350 19.8 15.6 127 21.4 20.2 106 EVENING STAR 9200 39.5 29.7 133 46.7 28.0 167 GRAVE SPRINGS 8550 6.0 -M * 14.8 14.4 103 KIRWIN 9550 10.8 9.5 114 20.5 14.8 139 LOST CREEK 8080 17.5 12.7 138 20.6 17.0 121 MARQUETTE 8760 9.2 7.2 128 16.4 15.5 106 MIDDLE POWDER 7760 11.5 12.6 91 19.0 16.6 114 OWL CREEK 8975 .2 .9 22 9.6 9.4 102 POWDER RIVER PASS 9480 12.2 5.6 218 18.3 16.5 111 SHELL CREEK 9580 16.3 16.3 100 19.7 17.9 110 SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153 SYLVAN ROAD 8120 3.1 3.6 86 30.4 20.3 150 TIMBER CREEK 7950 .2 2.2 9 11.5 12.0 96 YOUNTS PEAK 8350 20.9 15.0 139 -M 20.8 * ----- ----- Basin wide percent of average 124 125 SHOSHONE RIVER BLACKWATER 9780 39.1 24.1 162 34.4 22.4 154 EVENING STAR 9200 39.5 29.7 133 46.7 28.0 167 KIRWIN 9550 10.8 9.5 114 20.5 14.8 139 MARQUETTE 8760 9.2 7.2 128 16.4 15.5 106 SYLVAN LAKE 8420 -M 19.8 * 37.4 24.4 153 SYLVAN ROAD 8120 3.1 3.6 86 30.4 20.3 150 YOUNTS PEAK 8350 20.9 15.0 139 -M 20.8 * ----- ----- Basin wide percent of average 138 148 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 1.2 8 13.2 12.3 107 BONE SPRINGS DIV 9350 19.8 15.6 127 21.4 20.2 106 BURGESS JUNCTION 7880 11.7 10.1 116 18.1 16.1 112 CLOUD PEAK RESERVOIR 9860 18.8 15.2 124 20.9 19.3 108 DOME LAKE 8880 10.6 9.5 112 19.8 18.4 108 GRAVE SPRINGS 8550 6.0 -M * 14.8 14.4 103 HANSEN SAWMILL 8760 -M 3.6 * -M 11.7 * LOST CREEK 8080 17.5 12.7 138 20.6 17.0 121 MIDDLE POWDER 7760 11.5 12.6 91 19.0 16.6 114 POWDER RIVER PASS 9480 12.2 5.6 218 18.3 16.5 111 SUCKER CREEK 8880 14.9 9.7 154 22.0 18.6 118 TIE CREEK 6870 .2 -M * 17.9 15.5 115 ----- ----- Basin wide percent of average 127 111 BELLE FOURCHE BLIND PARK 6890 .0 4.1 0 19.9 16.1 124 NORTH RAPID CREEK 6130 .1 -M * 18.6 -M * WARREN PEAK 6520 9.9 4.1 241 -M 11.8 * ----- ----- Basin wide percent of average 121 124* UPPER N. PLATTE RIVER COLUMBINE 9400 13.3 12.8 104 38.6 29.5 131 DIVIDE PEAK 8800 14.3 11.4 125 29.7 29.1 102 ELK RIVER 8700 11.4 7.5 152 30.8 23.3 132 JOE WRIGHT 10120 31.4 22.9 137 37.9 32.7 116 NORTH FRENCH CREEK 10100 33.8 25.9 131 36.6 30.2 121 OLD BATTLE 10000 44.5 35.4 126 46.7 37.7 124 SOUTH BRUSH CREEK 8400 .0 5.3 0 21.8 22.0 99 TOWER 10500 -M 50.0 * -M 46.4 * WEBBER SPRINGS 9200 25.4 19.3 132 42.7 32.2 133 WILLOW CREEK PASS 9540 -M 9.7 * -M 16.9 * ----- ----- Basin wide percent of average 124 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 30.0 23.5 128 35.0 25.5 137 CASPER MTN. 7900 16.7 10.3 162 27.5 20.9 132 CHRISTINA LAKE 9980 18.5 16.3 113 27.9 21.9 127 DEADMAN HILL 10220 19.1 17.6 109 24.8 22.9 108 LAPRELE CREEK 8320 .0 3.1 0 18.6 16.5 113 RENO HILL 8400 16.0 7.9 203 26.9 23.4 115 ROACH 9700 19.9 15.0 133 28.1 28.1 100 SAND LAKE 10080 43.9 34.1 129 36.8 26.7 138 SOUTH PASS 9040 -M 15.7 * -M 22.4 * WINDY PEAK 7840 .2 3.1 6 14.5 14.0 104 ----- ----- Basin wide percent of average 126 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * -M 19.7 * DIVIDE PEAK 8800 14.3 11.4 125 29.7 29.1 102 OLD BATTLE 10000 44.5 35.4 126 46.7 37.7 124 SANDSTONE RS 8150 .0 2.0 0 26.3 24.5 107 WHISKEY PARK 8950 35.2 23.7 149 41.2 36.2 114 ----- ----- Basin wide percent of average 130 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 6.6 8.6 77 19.9 19.6 102 BLIND BULL SUM 8650 46.1 21.7 212 37.1 28.2 132 EAST RIM DIVIDE 7930 9.0 12.0 75 18.7 18.3 102 ELKHART PARK G.S. 9400 10.1 9.2 110 21.2 19.2 110 GROS VENTRE SUMMIT 8775 15.9 8.9 179 23.2 19.1 121 KENDALL R.S. 7740 6.9 .0 * 25.1 18.7 134 LOOMIS PARK 8240 -M 10.0 * 29.9 22.6 132 NEW FORK LAKE 8340 .7 5.5 13 16.3 17.4 94 SNIDER BASIN 8250 8.8 7.5 117 21.8 18.2 120 SPRING CREEK DIVIDE 9000 29.3 25.2 116 37.4 32.3 116 TRIPLE PEAK 8500 23.0 20.4 113 44.0 37.0 119 ----- ----- Basin wide percent of average 126 118 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.1 16.1 119 HEWINTA 9500 .0 .0 100* 17.1 17.7 97 HICKERSON PARK 9150 .0 .5 0* 12.5 13.8 91 HOLE-IN-ROCK 9150 .1 .5 20* 12.9 13.8 93 INDIAN CREEK 9425 33.0 24.0 138 37.1 30.8 120 KELLEY R.S. 8180 10.3 8.8 117 35.2 22.6 156 STEEL CREEK PARK 10100 15.4 16.1 96 19.9 18.0 111 ----- ----- Basin wide percent of average 118* 116 UPPER BEAR RIVER BUG LAKE 7950 20.8 9.2 226 34.2 23.8 144 HAYDEN FORK 9400 2.0 .6 333* 29.9 24.7 121 KELLEY R.S. 8180 10.3 8.8 117 35.2 22.6 156 LILY LAKE 9050 .3 5.1 6 23.8 19.6 121 MONTE CRISTO 8960 29.5 20.5 144 39.3 32.1 122 SALT RIVER SUMMIT 7600 5.7 .0 * 26.9 20.3 133 TRIAL LAKE 9960 26.8 19.9 135 38.9 30.1 129 ----- ----- Basin wide percent of average 140 132 ----------------------------------------------------------------------------- -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.