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 FRIDAY: MAY 9 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.6 7.3 296 39.0 25.9 151 COTTONWOOD CREEK 7600 29.9 16.6 180 39.6 28.9 137 GRANITE CREEK 6770 22.1 9.7 228 35.7 27.6 129 GRASSY LAKE 7265 46.0 30.1 153 61.3 43.0 143 GROS VENTRE SUMMIT 8775 21.2 11.7 181 23.1 18.6 124 LEWIS LAKE DIVIDE 7860 53.7 31.7 169 63.7 43.8 145 PHILLIPS BENCH 8200 42.2 27.1 156 51.0 34.5 148 SALT RIVER SUMMIT 7600 15.7 4.6 341 26.7 19.8 135 SNAKE RIVER STATION 6920 17.2 13.6 126 40.9 30.2 135 SPRING CREEK DIVIDE 9000 35.9 27.5 131 37.3 31.6 118 THUMB DIVIDE 7980 25.4 12.9 197 37.1 24.2 153 TOGWOTEE PASS 9580 38.2 27.0 141 39.8 32.8 121 TWO OCEAN PLATEAU 9360 47.7 26.9 177 -M 35.7 * WILLOW CREEK 8450 43.3 29.6 146 53.5 37.2 144 ----- ----- Basin wide percent of average 167 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.4 * 35.3 22.2 159 BLACK BEAR 7950 -M 38.2 * -M 47.6 * CANYON 7940 19.2 8.4 229 29.6 17.0 174 FISHER CREEK 9100 60.8 38.0 160 -M 43.4 * MADISON PLATEAU 7750 38.9 21.0 185 46.1 30.8 150 NORTHEAST ENTRANCE 7350 5.8 4.0 145 23.4 14.6 160 PARKER PEAK 9400 38.7 23.1 168 -M 19.1 * SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160 THUMB DIVIDE 7980 25.4 12.9 197 37.1 24.2 153 TWO OCEAN PLATEAU 9360 47.7 26.9 177 -M 35.7 * WHISKEY CREEK 6800 20.5 11.9 172 35.3 25.6 138 WHITE MILL 8700 43.1 25.5 169 -M 33.6 * WOLVERINE 7650 9.3 5.2 179 19.1 15.9 120 ----- ----- Basin wide percent of average 171 152 WIND RIVER BURROUGHS CREEK 8750 22.0 9.5 232 28.9 20.2 143 CHRISTINA LAKE 9980 21.7 17.5 124 27.9 21.0 133 COLD SPRINGS 9630 7.4 4.5 164 16.6 13.9 119 HOBBS PARK 10100 21.7 17.4 125 19.6 18.2 108 LITTLE WARM 9620 16.9 7.5 225 24.3 17.1 142 SOUTH PASS 9040 25.7 17.2 149 30.1 21.5 140 ST. LAWRENCE ALT 8620 9.5 3.7 257 16.4 13.1 125 TOGWOTEE PASS 9580 38.2 27.0 141 39.8 32.8 121 TOWNSEND CREEK 8700 11.2 7.6 147 18.3 16.3 112 ----- ----- Basin wide percent of average 156 127 BIGHORN BASIN BALD MTN. 9375 26.4 24.3 109 22.9 22.0 104 BEAR TRAP MEADOW 7900 2.1 2.6 81 12.9 11.5 112 BLACKWATER 9780 43.1 25.2 171 34.3 21.5 160 BONE SPRINGS DIV 9350 21.7 17.4 125 21.4 19.2 111 EVENING STAR 9200 45.2 30.5 148 46.6 26.9 173 GRAVE SPRINGS 8550 11.8 -M * 14.7 13.4 110 KIRWIN 9550 16.5 10.8 153 20.2 14.0 144 LOST CREEK 8080 21.3 14.5 147 20.5 16.0 128 MARQUETTE 8760 13.7 8.0 171 16.3 14.5 112 MIDDLE POWDER 7760 17.5 14.3 122 18.8 15.7 120 OWL CREEK 8975 3.1 2.0 155 9.5 8.8 108 POWDER RIVER PASS 9480 -M 8.0 * 17.9 15.6 115 SHELL CREEK 9580 20.2 17.0 119 19.4 16.9 115 SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160 SYLVAN ROAD 8120 12.8 5.7 225 30.4 19.4 157 TIMBER CREEK 7950 4.5 4.0 112 11.6 11.0 105 YOUNTS PEAK 8350 24.0 16.9 142 -M 20.1 * ----- ----- Basin wide percent of average 141 131 SHOSHONE RIVER BLACKWATER 9780 43.1 25.2 171 34.3 21.5 160 EVENING STAR 9200 45.2 30.5 148 46.6 26.9 173 KIRWIN 9550 16.5 10.8 153 20.2 14.0 144 MARQUETTE 8760 13.7 8.0 171 16.3 14.5 112 SYLVAN LAKE 8420 30.7 22.0 140 37.2 23.3 160 SYLVAN ROAD 8120 12.8 5.7 225 30.4 19.4 157 YOUNTS PEAK 8350 24.0 16.9 142 -M 20.1 * ----- ----- Basin wide percent of average 156 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 2.1 2.6 81 12.9 11.5 112 BONE SPRINGS DIV 9350 21.7 17.4 125 21.4 19.2 111 BURGESS JUNCTION 7880 15.9 12.1 131 17.9 15.3 117 CLOUD PEAK RESERVOIR 9860 22.8 16.8 136 20.9 18.2 115 DOME LAKE 8880 16.1 12.3 131 19.8 17.4 114 GRAVE SPRINGS 8550 11.8 -M * 14.7 13.4 110 HANSEN SAWMILL 8760 4.6 5.2 88 12.1 11.0 110 LOST CREEK 8080 21.3 14.5 147 20.5 16.0 128 MIDDLE POWDER 7760 17.5 14.3 122 18.8 15.7 120 POWDER RIVER PASS 9480 -M 8.0 * 17.9 15.6 115 SUCKER CREEK 8880 19.7 11.9 166 21.7 17.5 124 TIE CREEK 6870 5.7 -M * 17.9 14.6 123 ----- ----- Basin wide percent of average 132 117 BELLE FOURCHE BLIND PARK 6890 4.7 6.7 70 19.5 14.9 131 NORTH RAPID CREEK 6130 7.6 -M * 18.4 -M * WARREN PEAK 6520 17.7 6.7 264 -M 11.1 * ----- ----- Basin wide percent of average 167 131* UPPER N. PLATTE RIVER COLUMBINE 9400 24.6 17.5 141 38.3 28.8 133 DIVIDE PEAK 8800 23.8 15.4 155 29.7 28.2 105 ELK RIVER 8700 20.8 11.8 176 31.0 22.7 137 JOE WRIGHT 10120 35.4 24.1 147 37.5 31.5 119 NORTH FRENCH CREEK 10100 39.1 27.9 140 36.3 29.1 125 OLD BATTLE 10000 48.4 37.5 129 46.5 36.7 127 SOUTH BRUSH CREEK 8400 6.7 7.9 85 21.7 21.3 102 TOWER 10500 31.0 50.9 61 59.7 44.8 133 WEBBER SPRINGS 9200 31.7 22.9 138 42.6 31.4 136 WILLOW CREEK PASS 9540 -M 11.9 * 20.3 16.1 126 ----- ----- Basin wide percent of average 121 125 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 39.5 26.6 148 34.9 24.7 141 CASPER MTN. 7900 23.6 14.0 169 27.4 19.9 138 CHRISTINA LAKE 9980 21.7 17.5 124 27.9 21.0 133 DEADMAN HILL 10220 22.5 18.8 120 24.6 22.0 112 LAPRELE CREEK 8320 9.0 4.6 196 18.2 15.6 117 RENO HILL 8400 22.5 10.7 210 26.7 22.9 117 ROACH 9700 26.9 16.9 159 27.8 26.9 103 SAND LAKE 10080 45.2 36.2 125 35.2 25.7 137 SOUTH PASS 9040 25.7 17.2 149 30.1 21.5 140 WINDY PEAK 7840 2.1 5.4 39 14.1 13.1 108 ----- ----- Basin wide percent of average 142 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 2.1 5 32.9 19.1 172 DIVIDE PEAK 8800 23.8 15.4 155 29.7 28.2 105 OLD BATTLE 10000 48.4 37.5 129 46.5 36.7 127 SANDSTONE RS 8150 7.7 5.5 140 26.1 23.8 110 WHISKEY PARK 8950 44.2 27.1 163 41.0 35.1 117 ----- ----- Basin wide percent of average 142 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.8 11.6 128 19.6 19.0 103 BLIND BULL SUM 8650 44.5 22.5 198 37.0 27.6 134 EAST RIM DIVIDE 7930 14.4 13.6 106 18.8 17.8 106 ELKHART PARK G.S. 9400 16.7 11.6 144 21.0 18.7 112 GROS VENTRE SUMMIT 8775 21.2 11.7 181 23.1 18.6 124 KENDALL R.S. 7740 14.8 4.5 329 25.0 18.1 138 LOOMIS PARK 8240 -M 12.9 * 29.7 22.0 135 NEW FORK LAKE 8340 8.5 7.4 115 15.3 16.9 91 SNIDER BASIN 8250 16.9 10.4 162 22.0 17.7 124 SPRING CREEK DIVIDE 9000 35.9 27.5 131 37.3 31.6 118 TRIPLE PEAK 8500 31.6 22.8 139 43.8 36.0 122 ----- ----- Basin wide percent of average 153 120 LOWER GREEN RIVER HAMS FORK 7840 8.1 2.4 338 18.9 15.6 121 HEWINTA 9500 3.6 2.3 157 17.2 17.0 101 HICKERSON PARK 9150 4.6 1.6 288 12.4 13.0 95 HOLE-IN-ROCK 9150 1.8 1.3 138 12.8 13.0 98 INDIAN CREEK 9425 41.8 26.6 157 37.0 30.0 123 KELLEY R.S. 8180 19.1 12.1 158 35.2 21.9 161 STEEL CREEK PARK 10100 20.5 17.6 116 19.9 17.1 116 ----- ----- Basin wide percent of average 156 120 UPPER BEAR RIVER BUG LAKE 7950 29.6 12.6 235 34.4 23.2 148 HAYDEN FORK 9400 11.3 3.2 353 30.0 23.8 126 KELLEY R.S. 8180 19.1 12.1 158 35.2 21.9 161 LILY LAKE 9050 11.1 7.0 159 23.7 18.8 126 MONTE CRISTO 8960 38.6 23.7 163 39.3 31.2 126 SALT RIVER SUMMIT 7600 15.7 4.6 341 26.7 19.8 135 TRIAL LAKE 9960 35.3 22.3 158 38.9 29.2 133 ----- ----- 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.