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 WEDNESDAY: MAY 7 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 23.2 8.2 283 39.1 25.7 152 COTTONWOOD CREEK 7600 31.4 17.4 180 39.6 28.8 138 GRANITE CREEK 6770 23.2 10.5 221 35.7 27.4 130 GRASSY LAKE 7265 46.1 31.0 149 61.3 42.8 143 GROS VENTRE SUMMIT 8775 22.3 12.3 181 23.2 18.5 125 LEWIS LAKE DIVIDE 7860 55.5 32.3 172 63.7 43.5 146 PHILLIPS BENCH 8200 43.1 27.7 156 50.9 34.3 148 SALT RIVER SUMMIT 7600 17.5 6.2 282 26.8 19.6 137 SNAKE RIVER STATION 6920 19.2 14.3 134 40.9 30.0 136 SPRING CREEK DIVIDE 9000 38.2 28.1 136 37.3 31.4 119 THUMB DIVIDE 7980 27.3 13.4 204 37.1 24.1 154 TOGWOTEE PASS 9580 38.5 27.3 141 39.8 32.6 122 TWO OCEAN PLATEAU 9360 49.1 27.0 182 -M 35.4 * WILLOW CREEK 8450 44.3 30.1 147 53.5 36.9 145 ----- ----- Basin wide percent of average 168 139 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.5 * 35.1 21.9 160 BLACK BEAR 7950 -M 38.6 * -M 47.3 * CANYON 7940 20.4 9.0 227 -M 16.8 * FISHER CREEK 9100 60.7 38.1 159 -M 43.1 * MADISON PLATEAU 7750 41.1 21.7 189 46.2 30.6 151 NORTHEAST ENTRANCE 7350 7.0 4.5 156 23.3 14.4 162 PARKER PEAK 9400 38.6 23.3 166 -M 18.8 * SYLVAN LAKE 8420 31.7 22.4 142 37.2 23.1 161 THUMB DIVIDE 7980 27.3 13.4 204 37.1 24.1 154 TWO OCEAN PLATEAU 9360 49.1 27.0 182 -M 35.4 * WHISKEY CREEK 6800 21.8 12.8 170 35.1 25.4 138 WHITE MILL 8700 43.1 25.7 168 -M 33.4 * WOLVERINE 7650 10.6 5.9 180 18.8 15.8 119 ----- ----- Basin wide percent of average 172 150 WIND RIVER BURROUGHS CREEK 8750 23.1 10.3 224 28.9 20.0 145 CHRISTINA LAKE 9980 21.8 17.6 124 27.8 20.8 134 COLD SPRINGS 9630 8.6 5.1 169 16.6 13.7 121 HOBBS PARK 10100 21.7 17.5 124 19.6 18.0 109 LITTLE WARM 9620 18.5 8.3 223 24.4 16.9 144 SOUTH PASS 9040 26.8 17.4 154 30.2 21.3 142 ST. LAWRENCE ALT 8620 10.4 4.1 254 16.4 12.9 127 TOGWOTEE PASS 9580 38.5 27.3 141 39.8 32.6 122 TOWNSEND CREEK 8700 11.9 8.0 149 18.5 16.1 115 ----- ----- Basin wide percent of average 157 129 BIGHORN BASIN BALD MTN. 9375 26.4 24.2 109 22.9 21.7 106 BEAR TRAP MEADOW 7900 3.6 3.0 120 12.9 11.2 115 BLACKWATER 9780 43.3 25.3 171 34.2 21.3 161 BONE SPRINGS DIV 9350 21.7 17.6 123 21.4 18.9 113 EVENING STAR 9200 45.6 30.6 149 46.5 26.7 174 GRAVE SPRINGS 8550 12.6 -M * 14.8 13.1 113 KIRWIN 9550 17.3 11.0 157 20.2 13.9 145 LOST CREEK 8080 21.6 14.9 145 20.4 15.7 130 MARQUETTE 8760 14.6 8.2 178 16.3 14.2 115 MIDDLE POWDER 7760 18.0 14.5 124 18.8 15.5 121 OWL CREEK 8975 5.0 2.4 208 9.6 8.6 112 POWDER RIVER PASS 9480 -M 8.7 * 17.9 15.4 116 SHELL CREEK 9580 21.4 17.0 126 19.2 16.7 115 SYLVAN LAKE 8420 31.7 22.4 142 37.2 23.1 161 SYLVAN ROAD 8120 14.1 6.2 227 30.4 19.2 158 TIMBER CREEK 7950 5.9 4.5 131 11.6 10.7 108 YOUNTS PEAK 8350 24.3 17.2 141 -M 19.9 * ----- ----- Basin wide percent of average 144 133 SHOSHONE RIVER BLACKWATER 9780 43.3 25.3 171 34.2 21.3 161 EVENING STAR 9200 45.6 30.6 149 46.5 26.7 174 KIRWIN 9550 17.3 11.0 157 20.2 13.9 145 MARQUETTE 8760 14.6 8.2 178 16.3 14.2 115 SYLVAN LAKE 8420 31.7 22.4 142 37.2 23.1 161 SYLVAN ROAD 8120 14.1 6.2 227 30.4 19.2 158 YOUNTS PEAK 8350 24.3 17.2 141 -M 19.9 * ----- ----- Basin wide percent of average 158 156 POWDER-TONGUE BEAR TRAP MEADOW 7900 3.6 3.0 120 12.9 11.2 115 BONE SPRINGS DIV 9350 21.7 17.6 123 21.4 18.9 113 BURGESS JUNCTION 7880 16.6 12.5 133 18.0 15.0 120 CLOUD PEAK RESERVOIR 9860 22.7 17.0 134 20.8 17.9 116 DOME LAKE 8880 16.6 13.0 128 19.7 17.1 115 GRAVE SPRINGS 8550 12.6 -M * 14.8 13.1 113 HANSEN SAWMILL 8760 5.4 5.7 95 12.1 10.8 112 LOST CREEK 8080 21.6 14.9 145 20.4 15.7 130 MIDDLE POWDER 7760 18.0 14.5 124 18.8 15.5 121 POWDER RIVER PASS 9480 -M 8.7 * 17.9 15.4 116 SUCKER CREEK 8880 19.9 12.4 160 21.7 17.3 125 TIE CREEK 6870 6.7 -M * 17.8 14.4 124 ----- ----- Basin wide percent of average 132 119 BELLE FOURCHE BLIND PARK 6890 6.2 7.5 83 19.6 14.7 133 NORTH RAPID CREEK 6130 9.3 -M * 18.6 -M * WARREN PEAK 6520 19.4 7.5 259 -M 10.9 * ----- ----- Basin wide percent of average 171 133* UPPER N. PLATTE RIVER COLUMBINE 9400 27.3 18.7 146 38.5 28.6 135 DIVIDE PEAK 8800 26.3 16.4 160 30.2 28.0 108 ELK RIVER 8700 23.3 12.9 181 30.9 22.6 137 JOE WRIGHT 10120 35.5 24.3 146 37.5 31.2 120 NORTH FRENCH CREEK 10100 39.7 28.2 141 36.3 28.8 126 OLD BATTLE 10000 49.0 37.6 130 46.5 36.5 127 SOUTH BRUSH CREEK 8400 8.6 8.6 100 21.8 21.1 103 TOWER 10500 31.4 51.0 62 59.6 44.4 134 WEBBER SPRINGS 9200 32.4 23.6 137 42.6 31.2 137 WILLOW CREEK PASS 9540 -M 12.3 * 20.3 16.0 127 ----- ----- Basin wide percent of average 124 126 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 41.4 27.2 152 34.8 24.4 143 CASPER MTN. 7900 25.6 15.0 171 27.5 19.6 140 CHRISTINA LAKE 9980 21.8 17.6 124 27.8 20.8 134 DEADMAN HILL 10220 22.9 18.9 121 24.6 21.8 113 LAPRELE CREEK 8320 10.5 5.1 206 18.3 15.4 119 RENO HILL 8400 23.8 11.3 211 26.9 22.8 118 ROACH 9700 27.8 17.2 162 27.8 26.7 104 SAND LAKE 10080 45.2 36.4 124 35.4 25.5 139 SOUTH PASS 9040 26.8 17.4 154 30.2 21.3 142 WINDY PEAK 7840 4.0 6.0 67 14.6 12.9 113 ----- ----- Basin wide percent of average 145 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 2.7 * 33.0 19.0 174 DIVIDE PEAK 8800 26.3 16.4 160 30.2 28.0 108 OLD BATTLE 10000 49.0 37.6 130 46.5 36.5 127 SANDSTONE RS 8150 9.6 6.6 145 26.2 23.6 111 WHISKEY PARK 8950 45.1 27.8 162 41.0 34.8 118 ----- ----- Basin wide percent of average 147 125 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.5 12.1 136 19.7 18.9 104 BLIND BULL SUM 8650 44.3 22.6 196 37.0 27.4 135 EAST RIM DIVIDE 7930 15.1 13.9 109 18.8 17.7 106 ELKHART PARK G.S. 9400 17.9 12.2 147 21.0 18.6 113 GROS VENTRE SUMMIT 8775 22.3 12.3 181 23.2 18.5 125 KENDALL R.S. 7740 16.4 6.1 269 25.0 18.0 139 LOOMIS PARK 8240 -M 13.5 * 29.8 21.9 136 NEW FORK LAKE 8340 10.0 7.9 127 15.3 16.8 91 SNIDER BASIN 8250 18.2 11.1 164 21.9 17.6 124 SPRING CREEK DIVIDE 9000 38.2 28.1 136 37.3 31.4 119 TRIPLE PEAK 8500 33.2 23.4 142 44.0 35.7 123 ----- ----- Basin wide percent of average 155 121 LOWER GREEN RIVER HAMS FORK 7840 9.7 3.3 294 19.0 15.5 123 HEWINTA 9500 5.3 3.0 177 17.2 16.8 102 HICKERSON PARK 9150 6.0 1.9 316 12.6 12.9 98 HOLE-IN-ROCK 9150 4.1 1.5 273 12.8 12.9 99 INDIAN CREEK 9425 42.9 27.2 158 37.0 29.8 124 KELLEY R.S. 8180 20.8 12.9 161 35.3 21.8 162 STEEL CREEK PARK 10100 20.8 17.9 116 19.9 16.8 118 ----- ----- Basin wide percent of average 162 122 UPPER BEAR RIVER BUG LAKE 7950 31.3 13.5 232 34.5 23.0 150 HAYDEN FORK 9400 12.7 4.1 310 29.9 23.6 127 KELLEY R.S. 8180 20.8 12.9 161 35.3 21.8 162 LILY LAKE 9050 12.8 7.4 173 23.7 18.6 127 MONTE CRISTO 8960 39.5 24.4 162 39.4 31.0 127 SALT RIVER SUMMIT 7600 17.5 6.2 282 26.8 19.6 137 TRIAL LAKE 9960 36.9 22.7 163 38.9 29.0 134 ----- ----- Basin wide percent of average 188 137 ----------------------------------------------------------------------------- -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.