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 MONDAY: MAY 5 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.3 9.0 281 39.0 25.5 153 COTTONWOOD CREEK 7600 32.6 18.3 178 39.5 28.6 138 GRANITE CREEK 6770 24.4 11.3 216 35.7 27.2 131 GRASSY LAKE 7265 47.6 32.0 149 61.2 42.5 144 GROS VENTRE SUMMIT 8775 23.3 12.8 182 23.2 18.4 126 LEWIS LAKE DIVIDE 7860 55.0 33.0 167 63.6 43.2 147 PHILLIPS BENCH 8200 43.6 28.3 154 50.9 34.1 149 SALT RIVER SUMMIT 7600 19.2 7.7 249 26.7 19.5 137 SNAKE RIVER STATION 6920 21.4 15.0 143 40.8 29.8 137 SPRING CREEK DIVIDE 9000 41.6 28.6 145 37.3 31.2 120 THUMB DIVIDE 7980 29.6 14.0 211 36.9 23.9 154 TOGWOTEE PASS 9580 38.8 27.6 141 39.8 32.3 123 TWO OCEAN PLATEAU 9360 51.2 27.2 188 -M 35.2 * WILLOW CREEK 8450 45.0 30.7 147 53.4 36.7 146 ----- ----- Basin wide percent of average 169 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.7 * 34.6 21.7 159 BLACK BEAR 7950 -M 39.0 * -M 47.0 * CANYON 7940 21.5 9.6 224 -M 16.6 * FISHER CREEK 9100 60.6 38.3 158 -M 42.8 * MADISON PLATEAU 7750 42.2 22.4 188 46.0 30.3 152 NORTHEAST ENTRANCE 7350 8.4 5.0 168 22.8 14.2 161 PARKER PEAK 9400 37.6 23.4 161 -M 18.6 * SYLVAN LAKE 8420 32.0 22.9 140 36.9 22.8 162 THUMB DIVIDE 7980 29.6 14.0 211 36.9 23.9 154 TWO OCEAN PLATEAU 9360 51.2 27.2 188 -M 35.2 * WHISKEY CREEK 6800 22.6 13.6 166 34.9 25.2 138 WHITE MILL 8700 42.8 25.9 165 -M 33.1 * WOLVERINE 7650 12.2 6.6 185 18.4 15.6 118 ----- ----- Basin wide percent of average 173 150 WIND RIVER BURROUGHS CREEK 8750 24.2 11.2 216 28.9 19.8 146 CHRISTINA LAKE 9980 22.4 17.7 127 27.8 20.5 136 COLD SPRINGS 9630 9.3 5.7 163 16.6 13.5 123 HOBBS PARK 10100 22.4 17.7 127 19.6 17.8 110 LITTLE WARM 9620 19.7 9.0 219 24.4 16.7 146 SOUTH PASS 9040 27.8 17.6 158 30.1 21.0 143 ST. LAWRENCE ALT 8620 11.5 4.5 256 16.4 12.8 128 TOGWOTEE PASS 9580 38.8 27.6 141 39.8 32.3 123 TOWNSEND CREEK 8700 13.0 8.5 153 18.4 15.9 116 ----- ----- Basin wide percent of average 158 130 BIGHORN BASIN BALD MTN. 9375 26.6 24.2 110 22.6 21.4 106 BEAR TRAP MEADOW 7900 5.2 3.4 153 13.0 11.0 118 BLACKWATER 9780 43.4 25.4 171 34.1 21.0 162 BONE SPRINGS DIV 9350 21.7 17.9 121 21.3 18.6 115 EVENING STAR 9200 45.4 30.7 148 46.0 26.4 174 GRAVE SPRINGS 8550 13.5 -M * 14.7 12.9 114 KIRWIN 9550 17.9 11.2 160 20.1 13.7 147 LOST CREEK 8080 21.7 15.2 143 20.4 15.5 132 MARQUETTE 8760 15.3 8.3 184 16.3 14.0 116 MIDDLE POWDER 7760 19.2 14.6 132 18.8 15.2 124 OWL CREEK 8975 7.0 2.7 259 9.6 8.4 114 POWDER RIVER PASS 9480 -M 9.3 * 17.4 15.2 114 SHELL CREEK 9580 21.6 17.0 127 19.2 16.4 117 SYLVAN LAKE 8420 32.0 22.9 140 36.9 22.8 162 SYLVAN ROAD 8120 15.7 6.8 231 30.2 19.0 159 TIMBER CREEK 7950 7.2 5.0 144 11.6 10.5 110 YOUNTS PEAK 8350 25.3 17.6 144 -M 19.7 * ----- ----- Basin wide percent of average 146 134 SHOSHONE RIVER BLACKWATER 9780 43.4 25.4 171 34.1 21.0 162 EVENING STAR 9200 45.4 30.7 148 46.0 26.4 174 KIRWIN 9550 17.9 11.2 160 20.1 13.7 147 MARQUETTE 8760 15.3 8.3 184 16.3 14.0 116 SYLVAN LAKE 8420 32.0 22.9 140 36.9 22.8 162 SYLVAN ROAD 8120 15.7 6.8 231 30.2 19.0 159 YOUNTS PEAK 8350 25.3 17.6 144 -M 19.7 * ----- ----- Basin wide percent of average 159 157 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.2 3.4 153 13.0 11.0 118 BONE SPRINGS DIV 9350 21.7 17.9 121 21.3 18.6 115 BURGESS JUNCTION 7880 17.4 12.8 136 17.8 14.8 120 CLOUD PEAK RESERVOIR 9860 22.9 17.2 133 20.7 17.6 118 DOME LAKE 8880 17.6 13.7 128 19.7 16.9 117 GRAVE SPRINGS 8550 13.5 -M * 14.7 12.9 114 HANSEN SAWMILL 8760 6.5 6.1 107 12.1 10.6 114 LOST CREEK 8080 21.7 15.2 143 20.4 15.5 132 MIDDLE POWDER 7760 19.2 14.6 132 18.8 15.2 124 POWDER RIVER PASS 9480 -M 9.3 * 17.4 15.2 114 SUCKER CREEK 8880 20.5 12.9 159 21.6 17.0 127 TIE CREEK 6870 7.6 -M * 17.7 14.2 125 ----- ----- Basin wide percent of average 134 120 BELLE FOURCHE BLIND PARK 6890 7.7 8.2 94 19.5 14.4 135 NORTH RAPID CREEK 6130 10.7 -M * 18.6 -M * WARREN PEAK 6520 20.9 8.2 255 -M 10.7 * ----- ----- Basin wide percent of average 174 135* UPPER N. PLATTE RIVER COLUMBINE 9400 29.3 19.8 148 38.4 28.5 135 DIVIDE PEAK 8800 28.8 17.4 166 30.1 27.8 108 ELK RIVER 8700 26.0 14.0 186 31.0 22.4 138 JOE WRIGHT 10120 36.0 24.4 148 37.5 30.9 121 NORTH FRENCH CREEK 10100 40.7 28.6 142 36.3 28.6 127 OLD BATTLE 10000 49.7 37.8 131 46.5 36.2 128 SOUTH BRUSH CREEK 8400 10.5 9.3 113 21.7 20.9 104 TOWER 10500 31.8 51.0 62 57.7 44.0 131 WEBBER SPRINGS 9200 34.2 24.4 140 42.6 31.0 137 WILLOW CREEK PASS 9540 -M 12.7 * 20.3 15.8 128 ----- ----- Basin wide percent of average 127 127 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 42.3 27.8 152 34.8 24.2 144 CASPER MTN. 7900 26.6 15.9 167 27.4 19.3 142 CHRISTINA LAKE 9980 22.4 17.7 127 27.8 20.5 136 DEADMAN HILL 10220 23.0 19.0 121 24.6 21.6 114 LAPRELE CREEK 8320 12.0 5.5 218 18.2 15.1 121 RENO HILL 8400 25.2 12.0 210 26.8 22.6 119 ROACH 9700 26.0 17.5 149 27.8 26.4 105 SAND LAKE 10080 45.2 36.7 123 35.1 25.3 139 SOUTH PASS 9040 27.8 17.6 158 30.1 21.0 143 WINDY PEAK 7840 6.1 6.6 92 14.5 12.7 114 ----- ----- Basin wide percent of average 146 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.3 3.4 126 32.9 18.8 175 DIVIDE PEAK 8800 28.8 17.4 166 30.1 27.8 108 OLD BATTLE 10000 49.7 37.8 131 46.5 36.2 128 SANDSTONE RS 8150 12.6 7.7 164 26.2 23.4 112 WHISKEY PARK 8950 46.5 28.4 164 41.0 34.6 118 ----- ----- Basin wide percent of average 150 125 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.0 12.7 142 19.6 18.8 104 BLIND BULL SUM 8650 44.3 22.6 196 36.9 27.2 136 EAST RIM DIVIDE 7930 16.3 14.2 115 18.8 17.5 107 ELKHART PARK G.S. 9400 18.8 12.8 147 20.9 18.5 113 GROS VENTRE SUMMIT 8775 23.3 12.8 182 23.2 18.4 126 KENDALL R.S. 7740 18.0 7.6 237 25.0 17.9 140 LOOMIS PARK 8240 -M 14.0 * 29.7 21.7 137 NEW FORK LAKE 8340 11.6 8.3 140 15.1 16.6 91 SNIDER BASIN 8250 19.7 11.7 168 22.0 17.5 126 SPRING CREEK DIVIDE 9000 41.6 28.6 145 37.3 31.2 120 TRIPLE PEAK 8500 34.5 23.9 144 43.9 35.5 124 ----- ----- Basin wide percent of average 159 121 LOWER GREEN RIVER HAMS FORK 7840 11.8 4.1 288 18.9 15.4 123 HEWINTA 9500 7.4 3.8 195 17.2 16.6 104 HICKERSON PARK 9150 8.1 2.2 368 12.5 12.7 98 HOLE-IN-ROCK 9150 6.5 1.8 361 12.9 12.7 102 INDIAN CREEK 9425 44.4 27.8 160 36.9 29.6 125 KELLEY R.S. 8180 22.5 13.6 165 35.2 21.6 163 STEEL CREEK PARK 10100 20.8 18.2 114 19.9 16.6 120 ----- ----- Basin wide percent of average 170 123 UPPER BEAR RIVER BUG LAKE 7950 33.3 14.3 233 34.5 22.9 151 HAYDEN FORK 9400 14.8 4.9 302 29.9 23.4 128 KELLEY R.S. 8180 22.5 13.6 165 35.2 21.6 163 LILY LAKE 9050 15.5 7.8 199 23.7 18.4 129 MONTE CRISTO 8960 41.1 25.0 164 39.4 30.7 128 SALT RIVER SUMMIT 7600 19.2 7.7 249 26.7 19.5 137 TRIAL LAKE 9960 36.9 23.1 160 37.0 28.7 129 ----- ----- Basin wide percent of average 190 137 ----------------------------------------------------------------------------- -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.