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: MAY 15 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.9 4.8 310 39.0 26.4 148 COTTONWOOD CREEK 7600 22.5 14.0 161 39.8 29.5 135 GRANITE CREEK 6770 17.6 7.3 241 35.7 28.2 127 GRASSY LAKE 7265 35.4 27.2 130 61.3 43.9 140 GROS VENTRE SUMMIT 8775 17.4 10.1 172 23.2 19.0 122 LEWIS LAKE DIVIDE 7860 47.1 29.6 159 63.8 44.6 143 PHILLIPS BENCH 8200 37.3 25.3 147 51.0 35.2 145 SALT RIVER SUMMIT 7600 8.4 .0 * 26.7 20.2 132 SNAKE RIVER STATION 6920 7.9 11.5 69 40.9 30.8 133 SPRING CREEK DIVIDE 9000 31.0 26.0 119 37.4 32.2 116 THUMB DIVIDE 7980 18.8 11.2 168 37.1 24.7 150 TOGWOTEE PASS 9580 33.2 26.0 128 39.9 33.4 119 TWO OCEAN PLATEAU 9360 44.4 26.3 169 -M 36.4 * WILLOW CREEK 8450 36.3 27.8 131 53.5 37.9 141 ----- ----- Basin wide percent of average 147 135 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 24.9 * 35.4 22.9 155 BLACK BEAR 7950 -M 37.0 * -M 48.4 * CANYON 7940 13.7 6.5 211 29.6 17.5 169 FISHER CREEK 9100 54.3 37.4 145 -M 44.4 * MADISON PLATEAU 7750 31.9 18.9 169 46.2 31.4 147 NORTHEAST ENTRANCE 7350 .2 2.6 8 23.3 15.1 154 PARKER PEAK 9400 34.1 22.7 150 -M 19.7 * SYLVAN LAKE 8420 -M 20.6 * 37.2 24.1 154 THUMB DIVIDE 7980 18.8 11.2 168 37.1 24.7 150 TWO OCEAN PLATEAU 9360 44.4 26.3 169 -M 36.4 * WHISKEY CREEK 6800 15.7 9.5 165 35.2 26.1 135 WHITE MILL 8700 38.3 24.9 154 -M 34.4 * WOLVERINE 7650 1.7 3.0 57 19.0 16.5 115 ----- ----- Basin wide percent of average 155 148 WIND RIVER BURROUGHS CREEK 8750 18.4 6.9 267 29.0 20.8 139 CHRISTINA LAKE 9980 19.7 17.1 115 27.8 21.6 129 COLD SPRINGS 9630 -M 2.8 * 16.7 14.5 115 HOBBS PARK 10100 20.2 16.9 120 19.6 18.9 104 LITTLE WARM 9620 11.2 5.4 207 24.6 17.7 139 SOUTH PASS 9040 21.5 16.5 130 30.2 22.1 137 ST. LAWRENCE ALT 8620 3.9 2.4 163 16.4 13.5 121 TOGWOTEE PASS 9580 33.2 26.0 128 39.9 33.4 119 TOWNSEND CREEK 8700 6.9 6.1 113 18.4 16.9 109 ----- ----- Basin wide percent of average 139 124 BIGHORN BASIN BALD MTN. 9375 24.5 24.4 100 23.0 22.8 101 BEAR TRAP MEADOW 7900 .1 1.4 7 13.2 12.1 109 BLACKWATER 9780 40.4 24.8 163 34.3 22.1 155 BONE SPRINGS DIV 9350 20.8 16.6 125 21.4 20.0 107 EVENING STAR 9200 41.1 30.3 136 46.7 27.7 169 GRAVE SPRINGS 8550 8.4 -M * 14.8 14.1 105 KIRWIN 9550 12.7 10.1 126 20.4 14.6 140 LOST CREEK 8080 18.9 13.6 139 20.6 16.7 123 MARQUETTE 8760 10.1 7.6 133 16.3 15.2 107 MIDDLE POWDER 7760 13.5 14.0 96 18.9 16.3 116 OWL CREEK 8975 .2 1.0 20 9.6 9.3 103 POWDER RIVER PASS 9480 13.9 6.2 224 18.0 16.3 110 SHELL CREEK 9580 -M 17.0 * 19.6 17.7 111 SYLVAN LAKE 8420 -M 20.6 * 37.2 24.1 154 SYLVAN ROAD 8120 5.6 4.0 140 30.4 20.0 152 TIMBER CREEK 7950 .1 2.5 4 11.5 11.7 98 YOUNTS PEAK 8350 21.9 15.8 139 -M 20.7 * ----- ----- Basin wide percent of average 130 127 SHOSHONE RIVER BLACKWATER 9780 40.4 24.8 163 34.3 22.1 155 EVENING STAR 9200 41.1 30.3 136 46.7 27.7 169 KIRWIN 9550 12.7 10.1 126 20.4 14.6 140 MARQUETTE 8760 10.1 7.6 133 16.3 15.2 107 SYLVAN LAKE 8420 -M 20.6 * 37.2 24.1 154 SYLVAN ROAD 8120 5.6 4.0 140 30.4 20.0 152 YOUNTS PEAK 8350 21.9 15.8 139 -M 20.7 * ----- ----- Basin wide percent of average 142 150 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 1.4 7 13.2 12.1 109 BONE SPRINGS DIV 9350 20.8 16.6 125 21.4 20.0 107 BURGESS JUNCTION 7880 13.1 11.1 118 18.0 15.9 113 CLOUD PEAK RESERVOIR 9860 20.8 16.1 129 20.9 19.0 110 DOME LAKE 8880 12.6 10.3 122 19.8 18.1 109 GRAVE SPRINGS 8550 8.4 -M * 14.8 14.1 105 HANSEN SAWMILL 8760 .0 4.0 0 12.2 11.5 106 LOST CREEK 8080 18.9 13.6 139 20.6 16.7 123 MIDDLE POWDER 7760 13.5 14.0 96 18.9 16.3 116 POWDER RIVER PASS 9480 13.9 6.2 224 18.0 16.3 110 SUCKER CREEK 8880 16.6 10.5 158 21.9 18.3 120 TIE CREEK 6870 .7 -M * 17.9 15.2 118 ----- ----- Basin wide percent of average 126 112 BELLE FOURCHE BLIND PARK 6890 -M 4.6 * 19.8 15.8 125 NORTH RAPID CREEK 6130 1.7 -M * 18.5 -M * WARREN PEAK 6520 12.7 4.6 276 -M 11.7 * ----- ----- Basin wide percent of average 276* 125* UPPER N. PLATTE RIVER COLUMBINE 9400 16.5 14.1 117 38.5 29.4 131 DIVIDE PEAK 8800 17.2 12.5 138 29.5 28.9 102 ELK RIVER 8700 14.1 8.5 166 31.0 23.2 134 JOE WRIGHT 10120 32.2 23.7 136 37.8 32.4 117 NORTH FRENCH CREEK 10100 35.7 26.7 134 36.5 29.9 122 OLD BATTLE 10000 45.1 36.9 122 46.6 37.5 124 SOUTH BRUSH CREEK 8400 .6 5.9 10 21.8 21.8 100 TOWER 10500 67.0 50.8 132 59.7 46.0 130 WEBBER SPRINGS 9200 26.6 20.5 130 42.5 32.0 133 WILLOW CREEK PASS 9540 19.9 10.7 186 20.4 16.7 122 ----- ----- Basin wide percent of average 131 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 32.2 24.9 129 34.9 25.3 138 CASPER MTN. 7900 19.0 11.2 170 27.5 20.7 133 CHRISTINA LAKE 9980 19.7 17.1 115 27.8 21.6 129 DEADMAN HILL 10220 20.5 18.6 110 24.8 22.7 109 LAPRELE CREEK 8320 3.1 3.4 91 18.3 16.2 113 RENO HILL 8400 18.1 8.6 210 26.8 23.3 115 ROACH 9700 22.4 16.0 140 28.1 27.8 101 SAND LAKE 10080 44.7 35.4 126 36.8 26.4 139 SOUTH PASS 9040 21.5 16.5 130 30.2 22.1 137 WINDY PEAK 7840 .2 3.5 6 14.3 13.8 104 ----- ----- Basin wide percent of average 130 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * -M 19.6 * DIVIDE PEAK 8800 17.2 12.5 138 29.5 28.9 102 OLD BATTLE 10000 45.1 36.9 122 46.6 37.5 124 SANDSTONE RS 8150 .0 2.3 0 26.4 24.4 108 WHISKEY PARK 8950 38.1 25.3 151 41.1 35.9 114 ----- ----- Basin wide percent of average 130 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 8.8 9.8 90 19.8 19.4 102 BLIND BULL SUM 8650 44.9 22.4 200 37.0 28.1 132 EAST RIM DIVIDE 7930 10.7 12.7 84 18.7 18.2 103 ELKHART PARK G.S. 9400 11.5 9.8 117 21.1 19.1 110 GROS VENTRE SUMMIT 8775 17.4 10.1 172 23.2 19.0 122 KENDALL R.S. 7740 9.0 .0 * 25.0 18.5 135 LOOMIS PARK 8240 -M 11.3 * 29.8 22.5 132 NEW FORK LAKE 8340 2.8 6.2 45 16.0 17.3 92 SNIDER BASIN 8250 11.4 8.5 134 21.8 18.1 120 SPRING CREEK DIVIDE 9000 31.0 26.0 119 37.4 32.2 116 TRIPLE PEAK 8500 25.3 21.2 119 43.9 36.7 120 ----- ----- Basin wide percent of average 129 118 LOWER GREEN RIVER HAMS FORK 7840 .8 .0 * 19.0 16.0 119 HEWINTA 9500 .0 .0 100* 17.1 17.5 98 HICKERSON PARK 9150 .0 .6 0* 12.4 13.6 91 HOLE-IN-ROCK 9150 .1 .5 20* 12.8 13.6 94 INDIAN CREEK 9425 35.3 24.9 142 37.1 30.6 121 KELLEY R.S. 8180 12.9 10.0 129 35.3 22.4 158 STEEL CREEK PARK 10100 16.9 16.6 102 19.9 17.8 112 ----- ----- Basin wide percent of average 124* 117 UPPER BEAR RIVER BUG LAKE 7950 23.1 10.1 229 34.2 23.6 145 HAYDEN FORK 9400 4.4 .7 629* 29.9 24.4 123 KELLEY R.S. 8180 12.9 10.0 129 35.3 22.4 158 LILY LAKE 9050 1.1 5.7 19 23.7 19.4 122 MONTE CRISTO 8960 32.4 21.9 148 39.3 31.8 124 SALT RIVER SUMMIT 7600 8.4 .0 * 26.7 20.2 132 TRIAL LAKE 9960 28.9 21.0 138 38.9 29.8 131 ----- ----- Basin wide percent of average 148 133 ----------------------------------------------------------------------------- -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.