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 TUESDAY: MAY 6 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 24.2 8.6 281 39.1 25.6 153 COTTONWOOD CREEK 7600 32.2 17.9 180 39.6 28.7 138 GRANITE CREEK 6770 23.7 10.9 217 35.7 27.3 131 GRASSY LAKE 7265 47.4 31.5 150 61.3 42.6 144 GROS VENTRE SUMMIT 8775 22.7 12.5 182 23.3 18.4 127 LEWIS LAKE DIVIDE 7860 55.5 32.7 170 63.6 43.3 147 PHILLIPS BENCH 8200 43.4 28.0 155 50.9 34.2 149 SALT RIVER SUMMIT 7600 18.4 6.9 267 26.8 19.6 137 SNAKE RIVER STATION 6920 20.0 14.7 136 40.8 29.9 136 SPRING CREEK DIVIDE 9000 39.8 28.3 141 37.3 31.3 119 THUMB DIVIDE 7980 28.6 13.7 209 37.0 24.0 154 TOGWOTEE PASS 9580 38.6 27.5 140 39.8 32.4 123 TWO OCEAN PLATEAU 9360 -M 27.1 * -M 35.3 * WILLOW CREEK 8450 45.0 30.4 148 53.4 36.8 145 ----- ----- Basin wide percent of average 167 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.6 * 34.7 21.8 159 BLACK BEAR 7950 -M 38.8 * -M 47.2 * CANYON 7940 20.8 9.3 224 -M 16.7 * FISHER CREEK 9100 60.4 38.2 158 -M 43.0 * MADISON PLATEAU 7750 41.9 22.1 190 46.0 30.4 151 NORTHEAST ENTRANCE 7350 7.6 4.7 162 22.7 14.3 159 PARKER PEAK 9400 38.3 23.3 164 -M 18.7 * SYLVAN LAKE 8420 32.0 22.7 141 36.9 22.9 161 THUMB DIVIDE 7980 28.6 13.7 209 37.0 24.0 154 TWO OCEAN PLATEAU 9360 -M 27.1 * -M 35.3 * WHISKEY CREEK 6800 22.1 13.2 167 35.0 25.3 138 WHITE MILL 8700 42.4 25.8 164 -M 33.2 * WOLVERINE 7650 11.1 6.3 176 18.4 15.7 117 ----- ----- Basin wide percent of average 170 149 WIND RIVER BURROUGHS CREEK 8750 23.3 10.8 216 28.9 19.9 145 CHRISTINA LAKE 9980 21.9 17.7 124 27.8 20.6 135 COLD SPRINGS 9630 8.7 5.4 161 16.6 13.6 122 HOBBS PARK 10100 21.6 17.6 123 19.6 17.9 109 LITTLE WARM 9620 19.0 8.6 221 24.4 16.8 145 SOUTH PASS 9040 27.5 17.5 157 30.1 21.1 143 ST. LAWRENCE ALT 8620 11.0 4.3 256 16.4 12.9 127 TOGWOTEE PASS 9580 38.6 27.5 140 39.8 32.4 123 TOWNSEND CREEK 8700 12.5 8.3 151 18.5 16.0 116 ----- ----- Basin wide percent of average 156 130 BIGHORN BASIN BALD MTN. 9375 26.5 24.2 110 22.6 21.5 105 BEAR TRAP MEADOW 7900 4.6 3.2 144 12.9 11.1 116 BLACKWATER 9780 43.3 25.4 170 34.1 21.1 162 BONE SPRINGS DIV 9350 21.5 17.8 121 21.4 18.8 114 EVENING STAR 9200 45.7 30.6 149 46.0 26.5 174 GRAVE SPRINGS 8550 13.2 -M * 14.8 13.0 114 KIRWIN 9550 17.6 11.1 159 20.2 13.8 146 LOST CREEK 8080 21.7 15.0 145 20.4 15.6 131 MARQUETTE 8760 15.0 8.2 183 16.3 14.1 116 MIDDLE POWDER 7760 18.8 14.5 130 18.8 15.3 123 OWL CREEK 8975 6.0 2.5 240 9.7 8.5 114 POWDER RIVER PASS 9480 -M 9.0 * 17.5 15.3 114 SHELL CREEK 9580 21.9 17.0 129 19.2 16.5 116 SYLVAN LAKE 8420 32.0 22.7 141 36.9 22.9 161 SYLVAN ROAD 8120 14.7 6.5 226 30.2 19.1 158 TIMBER CREEK 7950 6.5 4.8 135 11.6 10.6 109 YOUNTS PEAK 8350 24.7 17.4 142 -M 19.8 * ----- ----- Basin wide percent of average 145 134 SHOSHONE RIVER BLACKWATER 9780 43.3 25.4 170 34.1 21.1 162 EVENING STAR 9200 45.7 30.6 149 46.0 26.5 174 KIRWIN 9550 17.6 11.1 159 20.2 13.8 146 MARQUETTE 8760 15.0 8.2 183 16.3 14.1 116 SYLVAN LAKE 8420 32.0 22.7 141 36.9 22.9 161 SYLVAN ROAD 8120 14.7 6.5 226 30.2 19.1 158 YOUNTS PEAK 8350 24.7 17.4 142 -M 19.8 * ----- ----- Basin wide percent of average 158 156 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.6 3.2 144 12.9 11.1 116 BONE SPRINGS DIV 9350 21.5 17.8 121 21.4 18.8 114 BURGESS JUNCTION 7880 17.0 12.6 135 17.9 14.9 120 CLOUD PEAK RESERVOIR 9860 22.9 17.1 134 20.8 17.8 117 DOME LAKE 8880 17.2 13.3 129 19.7 17.0 116 GRAVE SPRINGS 8550 13.2 -M * 14.8 13.0 114 HANSEN SAWMILL 8760 6.2 5.9 105 12.1 10.7 113 LOST CREEK 8080 21.7 15.0 145 20.4 15.6 131 MIDDLE POWDER 7760 18.8 14.5 130 18.8 15.3 123 POWDER RIVER PASS 9480 -M 9.0 * 17.5 15.3 114 SUCKER CREEK 8880 20.3 12.6 161 21.6 17.1 126 TIE CREEK 6870 7.3 -M * 17.7 14.3 124 ----- ----- Basin wide percent of average 134 119 BELLE FOURCHE BLIND PARK 6890 7.1 7.8 91 19.6 14.5 135 NORTH RAPID CREEK 6130 10.2 -M * 18.6 -M * WARREN PEAK 6520 20.2 7.8 259 -M 10.8 * ----- ----- Basin wide percent of average 175 135* UPPER N. PLATTE RIVER COLUMBINE 9400 28.4 19.2 148 38.4 28.6 134 DIVIDE PEAK 8800 27.4 16.9 162 30.2 27.9 108 ELK RIVER 8700 25.0 13.5 185 31.0 22.5 138 JOE WRIGHT 10120 36.0 24.3 148 37.5 31.0 121 NORTH FRENCH CREEK 10100 40.3 28.4 142 36.3 28.7 126 OLD BATTLE 10000 49.5 37.7 131 46.5 36.3 128 SOUTH BRUSH CREEK 8400 9.7 8.9 109 21.8 21.0 104 TOWER 10500 31.6 51.0 62 59.6 44.2 135 WEBBER SPRINGS 9200 32.9 24.0 137 42.6 31.1 137 WILLOW CREEK PASS 9540 -M 12.5 * 20.3 15.9 128 ----- ----- Basin wide percent of average 125 127 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 42.0 27.5 153 34.8 24.3 143 CASPER MTN. 7900 26.1 15.4 169 27.4 19.5 141 CHRISTINA LAKE 9980 21.9 17.7 124 27.8 20.6 135 DEADMAN HILL 10220 23.0 18.9 122 24.6 21.7 113 LAPRELE CREEK 8320 11.4 5.3 215 18.3 15.2 120 RENO HILL 8400 24.6 11.7 210 26.9 22.7 119 ROACH 9700 26.1 17.4 150 27.8 26.5 105 SAND LAKE 10080 45.2 36.6 123 35.1 25.4 138 SOUTH PASS 9040 27.5 17.5 157 30.1 21.1 143 WINDY PEAK 7840 5.0 6.3 79 14.7 12.8 115 ----- ----- Basin wide percent of average 145 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.7 3.1 87 33.0 18.9 175 DIVIDE PEAK 8800 27.4 16.9 162 30.2 27.9 108 OLD BATTLE 10000 49.5 37.7 131 46.5 36.3 128 SANDSTONE RS 8150 11.4 7.1 161 26.2 23.5 111 WHISKEY PARK 8950 45.5 28.1 162 41.0 34.7 118 ----- ----- Basin wide percent of average 147 125 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.3 12.4 140 19.7 18.8 105 BLIND BULL SUM 8650 44.2 22.6 196 37.0 27.3 136 EAST RIM DIVIDE 7930 15.6 14.1 111 18.8 17.6 107 ELKHART PARK G.S. 9400 18.5 12.5 148 21.0 18.5 114 GROS VENTRE SUMMIT 8775 22.7 12.5 182 23.3 18.4 127 KENDALL R.S. 7740 16.9 6.8 249 25.0 17.9 140 LOOMIS PARK 8240 -M 13.7 * 29.8 21.8 137 NEW FORK LAKE 8340 10.7 8.1 132 15.2 16.7 91 SNIDER BASIN 8250 18.9 11.4 166 21.9 17.5 125 SPRING CREEK DIVIDE 9000 39.8 28.3 141 37.3 31.3 119 TRIPLE PEAK 8500 34.5 23.6 146 43.9 35.6 123 ----- ----- Basin wide percent of average 157 121 LOWER GREEN RIVER HAMS FORK 7840 10.7 3.7 289 19.0 15.5 123 HEWINTA 9500 6.4 3.4 188 17.2 16.7 103 HICKERSON PARK 9150 7.0 2.1 333 12.6 12.8 98 HOLE-IN-ROCK 9150 5.5 1.7 324 12.8 12.8 100 INDIAN CREEK 9425 44.3 27.5 161 37.0 29.7 125 KELLEY R.S. 8180 21.6 13.2 164 35.3 21.7 163 STEEL CREEK PARK 10100 20.9 18.1 115 20.0 16.7 120 ----- ----- Basin wide percent of average 167 122 UPPER BEAR RIVER BUG LAKE 7950 32.4 13.9 233 34.5 23.0 150 HAYDEN FORK 9400 13.8 4.5 307 29.9 23.5 127 KELLEY R.S. 8180 21.6 13.2 164 35.3 21.7 163 LILY LAKE 9050 14.0 7.6 184 23.6 18.5 128 MONTE CRISTO 8960 40.3 24.7 163 39.4 30.8 128 SALT RIVER SUMMIT 7600 18.4 6.9 267 26.8 19.6 137 TRIAL LAKE 9960 36.9 22.9 161 37.1 28.8 129 ----- ----- Basin wide percent of average 189 137 ----------------------------------------------------------------------------- -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.