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 SATURDAY: MAY 10 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.3 6.9 294 39.1 26.0 150 COTTONWOOD CREEK 7600 28.8 16.1 179 39.6 29.0 137 GRANITE CREEK 6770 21.5 9.3 231 35.7 27.7 129 GRASSY LAKE 7265 44.1 29.6 149 61.3 43.2 142 GROS VENTRE SUMMIT 8775 20.6 11.5 179 23.2 18.7 124 LEWIS LAKE DIVIDE 7860 53.3 31.3 170 63.8 43.9 145 PHILLIPS BENCH 8200 41.5 26.8 155 51.0 34.6 147 SALT RIVER SUMMIT 7600 14.6 3.9 374 26.7 19.8 135 SNAKE RIVER STATION 6920 15.4 13.2 117 40.9 30.3 135 SPRING CREEK DIVIDE 9000 35.0 27.3 128 37.3 31.7 118 THUMB DIVIDE 7980 24.4 12.6 194 37.1 24.3 153 TOGWOTEE PASS 9580 37.7 26.8 141 39.8 32.9 121 TWO OCEAN PLATEAU 9360 46.2 26.8 172 -M 35.8 * WILLOW CREEK 8450 42.5 29.3 145 53.4 37.3 143 ----- ----- Basin wide percent of average 164 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.3 * 35.3 22.3 158 BLACK BEAR 7950 -M 38.0 * -M 47.7 * CANYON 7940 18.3 8.1 226 29.6 17.1 173 FISHER CREEK 9100 60.7 37.9 160 -M 43.6 * MADISON PLATEAU 7750 37.7 20.7 182 46.2 30.9 150 NORTHEAST ENTRANCE 7350 4.7 3.8 124 23.4 14.7 159 PARKER PEAK 9400 39.3 23.1 170 -M 19.2 * SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158 THUMB DIVIDE 7980 24.4 12.6 194 37.1 24.3 153 TWO OCEAN PLATEAU 9360 46.2 26.8 172 -M 35.8 * WHISKEY CREEK 6800 19.7 11.5 171 35.3 25.7 137 WHITE MILL 8700 42.4 25.4 167 -M 33.8 * WOLVERINE 7650 8.2 4.8 171 19.1 16.0 119 ----- ----- Basin wide percent of average 169 151 WIND RIVER BURROUGHS CREEK 8750 21.3 9.0 237 28.9 20.3 142 CHRISTINA LAKE 9980 21.4 17.4 123 27.8 21.1 132 COLD SPRINGS 9630 6.7 4.2 160 16.6 14.0 119 HOBBS PARK 10100 21.6 17.3 125 19.6 18.3 107 LITTLE WARM 9620 15.9 7.2 221 24.4 17.2 142 SOUTH PASS 9040 25.0 17.1 146 30.2 21.6 140 ST. LAWRENCE ALT 8620 8.6 3.5 246 16.4 13.2 124 TOGWOTEE PASS 9580 37.7 26.8 141 39.8 32.9 121 TOWNSEND CREEK 8700 10.6 7.3 145 18.3 16.4 112 ----- ----- Basin wide percent of average 154 127 BIGHORN BASIN BALD MTN. 9375 26.1 24.3 107 23.0 22.1 104 BEAR TRAP MEADOW 7900 -M 2.4 * 13.0 11.6 112 BLACKWATER 9780 42.8 25.1 171 34.3 21.6 159 BONE SPRINGS DIV 9350 21.7 17.2 126 21.4 19.3 111 EVENING STAR 9200 44.8 30.5 147 46.5 27.1 172 GRAVE SPRINGS 8550 11.2 -M * 14.8 13.5 110 KIRWIN 9550 16.0 10.7 150 20.3 14.1 144 LOST CREEK 8080 21.2 14.4 147 20.5 16.1 127 MARQUETTE 8760 13.2 8.0 165 16.3 14.6 112 MIDDLE POWDER 7760 16.8 14.3 117 18.9 15.8 120 OWL CREEK 8975 -M 1.9 * 9.6 8.9 108 POWDER RIVER PASS 9480 15.6 7.7 203 17.9 15.7 114 SHELL CREEK 9580 19.9 17.0 117 19.3 17.0 114 SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158 SYLVAN ROAD 8120 -M 5.4 * 30.4 19.5 156 TIMBER CREEK 7950 3.5 3.8 92 11.5 11.1 104 YOUNTS PEAK 8350 23.8 16.7 143 -M 20.2 * ----- ----- Basin wide percent of average 140 131 SHOSHONE RIVER BLACKWATER 9780 42.8 25.1 171 34.3 21.6 159 EVENING STAR 9200 44.8 30.5 147 46.5 27.1 172 KIRWIN 9550 16.0 10.7 150 20.3 14.1 144 MARQUETTE 8760 13.2 8.0 165 16.3 14.6 112 SYLVAN LAKE 8420 30.0 21.7 138 37.2 23.5 158 SYLVAN ROAD 8120 -M 5.4 * 30.4 19.5 156 YOUNTS PEAK 8350 23.8 16.7 143 -M 20.2 * ----- ----- Basin wide percent of average 151 154 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 2.4 * 13.0 11.6 112 BONE SPRINGS DIV 9350 21.7 17.2 126 21.4 19.3 111 BURGESS JUNCTION 7880 15.5 12.0 129 17.9 15.4 116 CLOUD PEAK RESERVOIR 9860 22.6 16.7 135 20.9 18.3 114 DOME LAKE 8880 15.4 12.0 128 19.8 17.5 113 GRAVE SPRINGS 8550 11.2 -M * 14.8 13.5 110 HANSEN SAWMILL 8760 3.5 5.0 70 12.1 11.1 109 LOST CREEK 8080 21.2 14.4 147 20.5 16.1 127 MIDDLE POWDER 7760 16.8 14.3 117 18.9 15.8 120 POWDER RIVER PASS 9480 15.6 7.7 203 17.9 15.7 114 SUCKER CREEK 8880 19.2 11.7 164 21.8 17.7 123 TIE CREEK 6870 4.9 -M * 17.9 14.7 122 ----- ----- Basin wide percent of average 136 116 BELLE FOURCHE BLIND PARK 6890 3.6 6.4 56 19.6 15.1 130 NORTH RAPID CREEK 6130 6.9 -M * 18.5 -M * WARREN PEAK 6520 17.1 6.4 267 -M 11.2 * ----- ----- Basin wide percent of average 162 130* UPPER N. PLATTE RIVER COLUMBINE 9400 23.2 17.0 136 38.4 28.9 133 DIVIDE PEAK 8800 23.0 14.9 154 29.9 28.3 106 ELK RIVER 8700 19.7 11.2 176 30.9 22.8 136 JOE WRIGHT 10120 34.8 24.1 144 37.5 31.6 119 NORTH FRENCH CREEK 10100 38.8 27.7 140 36.3 29.2 124 OLD BATTLE 10000 48.0 37.4 128 46.5 36.8 126 SOUTH BRUSH CREEK 8400 5.5 7.6 72 21.8 21.4 102 TOWER 10500 30.8 50.9 61 59.7 45.0 133 WEBBER SPRINGS 9200 30.8 22.5 137 42.6 31.5 135 WILLOW CREEK PASS 9540 -M 11.7 * 20.3 16.2 125 ----- ----- Basin wide percent of average 119 125 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 38.3 26.3 146 34.8 24.8 140 CASPER MTN. 7900 23.0 13.6 169 27.5 20.0 138 CHRISTINA LAKE 9980 21.4 17.4 123 27.8 21.1 132 DEADMAN HILL 10220 22.3 18.8 119 24.6 22.1 111 LAPRELE CREEK 8320 7.9 4.4 180 18.2 15.7 116 RENO HILL 8400 21.6 10.3 210 26.8 23.0 117 ROACH 9700 26.2 16.8 156 27.8 27.1 103 SAND LAKE 10080 45.2 36.0 126 35.1 25.8 136 SOUTH PASS 9040 25.0 17.1 146 30.2 21.6 140 WINDY PEAK 7840 .9 5.1 18 14.3 13.2 108 ----- ----- Basin wide percent of average 140 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 1.7 6 32.9 19.2 171 DIVIDE PEAK 8800 23.0 14.9 154 29.9 28.3 106 OLD BATTLE 10000 48.0 37.4 128 46.5 36.8 126 SANDSTONE RS 8150 6.1 5.0 122 26.2 23.9 110 WHISKEY PARK 8950 43.7 26.8 163 41.0 35.2 116 ----- ----- Basin wide percent of average 141 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 13.8 11.3 122 19.7 19.1 103 BLIND BULL SUM 8650 44.3 22.5 197 37.0 27.7 134 EAST RIM DIVIDE 7930 13.9 13.5 103 18.8 17.9 105 ELKHART PARK G.S. 9400 16.0 11.3 142 21.0 18.8 112 GROS VENTRE SUMMIT 8775 20.6 11.5 179 23.2 18.7 124 KENDALL R.S. 7740 13.8 3.8 363 25.0 18.2 137 LOOMIS PARK 8240 -M 12.7 * 29.8 22.1 135 NEW FORK LAKE 8340 7.7 7.2 107 15.5 17.0 91 SNIDER BASIN 8250 16.1 10.1 159 22.0 17.8 124 SPRING CREEK DIVIDE 9000 35.0 27.3 128 37.3 31.7 118 TRIPLE PEAK 8500 30.6 22.6 135 43.9 36.1 122 ----- ----- Basin wide percent of average 150 120 LOWER GREEN RIVER HAMS FORK 7840 6.9 2.0 345 18.9 15.7 120 HEWINTA 9500 2.4 1.9 126 17.2 17.1 101 HICKERSON PARK 9150 3.7 1.4 264 12.4 13.1 95 HOLE-IN-ROCK 9150 .7 1.1 64 12.8 13.1 98 INDIAN CREEK 9425 40.7 26.3 155 37.0 30.1 123 KELLEY R.S. 8180 18.1 11.8 153 35.2 22.0 160 STEEL CREEK PARK 10100 20.2 17.4 116 19.9 17.2 116 ----- ----- Basin wide percent of average 150 120 UPPER BEAR RIVER BUG LAKE 7950 28.7 12.2 235 34.3 23.3 147 HAYDEN FORK 9400 10.2 2.8 364 30.0 23.9 126 KELLEY R.S. 8180 18.1 11.8 153 35.2 22.0 160 LILY LAKE 9050 9.3 6.8 137 23.7 18.9 125 MONTE CRISTO 8960 38.0 23.4 162 39.4 31.3 126 SALT RIVER SUMMIT 7600 14.6 3.9 374 26.7 19.8 135 TRIAL LAKE 9960 34.5 22.1 156 38.9 29.3 133 ----- ----- Basin wide percent of average 185 135 ----------------------------------------------------------------------------- -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.