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 8 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.3 7.8 286 39.1 25.8 152 COTTONWOOD CREEK 7600 30.8 17.0 181 39.6 28.9 137 GRANITE CREEK 6770 22.6 10.1 224 35.7 27.5 130 GRASSY LAKE 7265 46.2 30.6 151 61.3 42.9 143 GROS VENTRE SUMMIT 8775 21.7 12.0 181 23.2 18.6 125 LEWIS LAKE DIVIDE 7860 53.8 32.0 168 63.7 43.6 146 PHILLIPS BENCH 8200 42.9 27.4 157 51.0 34.4 148 SALT RIVER SUMMIT 7600 16.6 5.4 307 26.7 19.7 136 SNAKE RIVER STATION 6920 18.4 14.0 131 40.9 30.1 136 SPRING CREEK DIVIDE 9000 36.7 27.8 132 37.3 31.5 118 THUMB DIVIDE 7980 26.3 13.2 199 37.1 24.2 153 TOGWOTEE PASS 9580 38.3 27.2 141 39.8 32.7 122 TWO OCEAN PLATEAU 9360 48.6 27.0 180 -M 35.5 * WILLOW CREEK 8450 43.8 29.9 146 53.4 37.1 144 ----- ----- Basin wide percent of average 167 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.5 * 35.2 22.1 159 BLACK BEAR 7950 -M 38.4 * -M 47.4 * CANYON 7940 19.8 8.7 228 29.6 16.9 175 FISHER CREEK 9100 60.5 38.1 159 -M 43.3 * MADISON PLATEAU 7750 40.0 21.4 187 46.2 30.7 150 NORTHEAST ENTRANCE 7350 6.6 4.3 153 23.4 14.5 161 PARKER PEAK 9400 38.4 23.2 166 -M 18.9 * SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160 THUMB DIVIDE 7980 26.3 13.2 199 37.1 24.2 153 TWO OCEAN PLATEAU 9360 48.6 27.0 180 -M 35.5 * WHISKEY CREEK 6800 21.0 12.4 169 35.2 25.5 138 WHITE MILL 8700 43.2 25.6 169 -M 33.5 * WOLVERINE 7650 10.1 5.6 180 19.0 15.9 119 ----- ----- Basin wide percent of average 171 152 WIND RIVER BURROUGHS CREEK 8750 22.4 9.9 226 28.9 20.1 144 CHRISTINA LAKE 9980 21.6 17.6 123 27.9 20.9 133 COLD SPRINGS 9630 7.8 4.8 163 16.6 13.8 120 HOBBS PARK 10100 21.7 17.5 124 19.6 18.1 108 LITTLE WARM 9620 17.6 7.9 223 24.4 17.0 144 SOUTH PASS 9040 26.1 17.3 151 30.1 21.4 141 ST. LAWRENCE ALT 8620 9.9 3.9 254 16.4 13.0 126 TOGWOTEE PASS 9580 38.3 27.2 141 39.8 32.7 122 TOWNSEND CREEK 8700 11.4 7.8 146 18.3 16.2 113 ----- ----- Basin wide percent of average 155 128 BIGHORN BASIN BALD MTN. 9375 26.4 24.3 109 22.9 21.8 105 BEAR TRAP MEADOW 7900 2.7 2.8 96 12.9 11.3 114 BLACKWATER 9780 43.1 25.3 170 34.1 21.4 159 BONE SPRINGS DIV 9350 21.7 17.5 124 21.4 19.0 113 EVENING STAR 9200 45.3 30.6 148 46.5 26.8 174 GRAVE SPRINGS 8550 12.0 -M * 14.7 13.3 111 KIRWIN 9550 16.9 10.9 155 20.2 14.0 144 LOST CREEK 8080 21.3 14.7 145 20.4 15.9 128 MARQUETTE 8760 14.1 8.1 174 16.2 14.4 112 MIDDLE POWDER 7760 17.6 14.4 122 18.8 15.6 121 OWL CREEK 8975 3.9 2.2 177 9.5 8.7 109 POWDER RIVER PASS 9480 -M 8.4 * 17.9 15.5 115 SHELL CREEK 9580 20.3 17.0 119 19.3 16.8 115 SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160 SYLVAN ROAD 8120 13.3 6.0 222 30.4 19.3 158 TIMBER CREEK 7950 5.2 4.2 124 11.6 10.9 106 YOUNTS PEAK 8350 24.1 17.1 141 -M 20.0 * ----- ----- Basin wide percent of average 141 132 SHOSHONE RIVER BLACKWATER 9780 43.1 25.3 170 34.1 21.4 159 EVENING STAR 9200 45.3 30.6 148 46.5 26.8 174 KIRWIN 9550 16.9 10.9 155 20.2 14.0 144 MARQUETTE 8760 14.1 8.1 174 16.2 14.4 112 SYLVAN LAKE 8420 31.3 22.2 141 37.2 23.2 160 SYLVAN ROAD 8120 13.3 6.0 222 30.4 19.3 158 YOUNTS PEAK 8350 24.1 17.1 141 -M 20.0 * ----- ----- Basin wide percent of average 156 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.7 2.8 96 12.9 11.3 114 BONE SPRINGS DIV 9350 21.7 17.5 124 21.4 19.0 113 BURGESS JUNCTION 7880 16.2 12.3 132 17.8 15.1 118 CLOUD PEAK RESERVOIR 9860 22.8 16.9 135 20.9 18.0 116 DOME LAKE 8880 16.3 12.7 128 19.8 17.3 114 GRAVE SPRINGS 8550 12.0 -M * 14.7 13.3 111 HANSEN SAWMILL 8760 4.7 5.5 85 12.1 10.9 111 LOST CREEK 8080 21.3 14.7 145 20.4 15.9 128 MIDDLE POWDER 7760 17.6 14.4 122 18.8 15.6 121 POWDER RIVER PASS 9480 -M 8.4 * 17.9 15.5 115 SUCKER CREEK 8880 19.8 12.2 162 21.6 17.4 124 TIE CREEK 6870 6.3 -M * 17.9 14.5 123 ----- ----- Basin wide percent of average 131 118 BELLE FOURCHE BLIND PARK 6890 5.2 7.1 73 19.6 14.8 132 NORTH RAPID CREEK 6130 8.2 -M * 18.5 -M * WARREN PEAK 6520 18.2 7.1 256 -M 11.0 * ----- ----- Basin wide percent of average 165 132* UPPER N. PLATTE RIVER COLUMBINE 9400 26.0 18.1 144 38.3 28.7 133 DIVIDE PEAK 8800 24.9 15.9 157 29.9 28.1 106 ELK RIVER 8700 22.0 12.4 177 31.0 22.6 137 JOE WRIGHT 10120 35.5 24.2 147 37.5 31.3 120 NORTH FRENCH CREEK 10100 39.3 28.1 140 36.3 29.0 125 OLD BATTLE 10000 48.7 37.6 130 46.5 36.6 127 SOUTH BRUSH CREEK 8400 7.6 8.3 92 21.7 21.2 102 TOWER 10500 31.3 51.0 61 59.7 44.6 134 WEBBER SPRINGS 9200 32.4 23.3 139 42.6 31.3 136 WILLOW CREEK PASS 9540 -M 12.1 * 20.2 16.1 125 ----- ----- Basin wide percent of average 122 126 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 40.5 26.9 151 34.8 24.5 142 CASPER MTN. 7900 24.4 14.5 168 27.4 19.7 139 CHRISTINA LAKE 9980 21.6 17.6 123 27.9 20.9 133 DEADMAN HILL 10220 22.7 18.9 120 24.6 21.9 112 LAPRELE CREEK 8320 9.5 4.9 194 18.2 15.5 117 RENO HILL 8400 23.1 11.0 210 26.8 22.8 118 ROACH 9700 27.3 17.1 160 27.8 26.8 104 SAND LAKE 10080 45.2 36.3 125 35.4 25.6 138 SOUTH PASS 9040 26.1 17.3 151 30.1 21.4 141 WINDY PEAK 7840 2.9 5.7 51 14.1 13.0 108 ----- ----- Basin wide percent of average 143 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 2.4 8 32.9 19.0 173 DIVIDE PEAK 8800 24.9 15.9 157 29.9 28.1 106 OLD BATTLE 10000 48.7 37.6 130 46.5 36.6 127 SANDSTONE RS 8150 8.8 6.1 144 26.2 23.7 111 WHISKEY PARK 8950 44.7 27.5 163 41.0 35.0 117 ----- ----- Basin wide percent of average 142 124 UPPER GREEN RIVER BIG SANDY OPENING 9100 15.5 11.9 130 19.6 19.0 103 BLIND BULL SUM 8650 44.6 22.6 197 37.0 27.5 135 EAST RIM DIVIDE 7930 14.8 13.8 107 18.8 17.7 106 ELKHART PARK G.S. 9400 17.4 11.9 146 21.0 18.7 112 GROS VENTRE SUMMIT 8775 21.7 12.0 181 23.2 18.6 125 KENDALL R.S. 7740 15.6 5.3 294 25.0 18.1 138 LOOMIS PARK 8240 -M 13.2 * 29.7 21.9 136 NEW FORK LAKE 8340 9.3 7.7 121 15.3 16.8 91 SNIDER BASIN 8250 17.5 10.8 162 21.9 17.7 124 SPRING CREEK DIVIDE 9000 36.7 27.8 132 37.3 31.5 118 TRIPLE PEAK 8500 32.5 23.1 141 43.8 35.9 122 ----- ----- Basin wide percent of average 154 120 LOWER GREEN RIVER HAMS FORK 7840 9.0 2.9 310 18.9 15.6 121 HEWINTA 9500 4.4 2.6 169 17.2 16.9 102 HICKERSON PARK 9150 5.2 1.8 289 12.5 13.0 96 HOLE-IN-ROCK 9150 3.0 1.4 214 12.8 13.0 98 INDIAN CREEK 9425 42.6 26.9 158 36.9 29.9 123 KELLEY R.S. 8180 19.9 12.5 159 35.2 21.9 161 STEEL CREEK PARK 10100 20.7 17.8 116 19.9 16.9 118 ----- ----- Basin wide percent of average 159 121 UPPER BEAR RIVER BUG LAKE 7950 30.5 13.1 233 34.4 23.1 149 HAYDEN FORK 9400 12.2 3.7 330 29.9 23.7 126 KELLEY R.S. 8180 19.9 12.5 159 35.2 21.9 161 LILY LAKE 9050 12.1 7.2 168 23.7 18.7 127 MONTE CRISTO 8960 39.1 24.1 162 39.3 31.1 126 SALT RIVER SUMMIT 7600 16.6 5.4 307 26.7 19.7 136 TRIAL LAKE 9960 36.2 22.5 161 38.9 29.1 134 ----- ----- Basin wide percent of average 188 136 ----------------------------------------------------------------------------- -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.