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 3 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.9 9.9 262 38.9 25.4 153 COTTONWOOD CREEK 7600 33.0 19.1 173 39.5 28.4 139 GRANITE CREEK 6770 25.2 12.1 208 35.6 27.0 132 GRASSY LAKE 7265 48.0 32.9 146 61.2 42.2 145 GROS VENTRE SUMMIT 8775 23.8 13.4 178 23.1 18.2 127 LEWIS LAKE DIVIDE 7860 54.7 33.7 162 63.5 42.9 148 PHILLIPS BENCH 8200 43.5 28.9 151 50.9 33.8 151 SALT RIVER SUMMIT 7600 20.1 9.3 216 26.7 19.3 138 SNAKE RIVER STATION 6920 22.2 15.7 141 40.8 29.6 138 SPRING CREEK DIVIDE 9000 42.1 29.1 145 37.3 31.0 120 THUMB DIVIDE 7980 29.9 14.5 206 36.9 23.8 155 TOGWOTEE PASS 9580 38.7 28.0 138 39.4 32.1 123 TWO OCEAN PLATEAU 9360 50.8 27.4 185 -M 34.9 * WILLOW CREEK 8450 45.7 31.3 146 53.3 36.4 146 ----- ----- Basin wide percent of average 165 140 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.8 * 34.5 21.4 161 BLACK BEAR 7950 -M 39.4 * -M 46.8 * CANYON 7940 22.1 10.3 215 -M 16.5 * FISHER CREEK 9100 60.8 38.5 158 -M 42.5 * MADISON PLATEAU 7750 42.5 23.1 184 46.0 30.1 153 NORTHEAST ENTRANCE 7350 8.8 5.4 163 22.7 14.1 161 PARKER PEAK 9400 37.9 23.6 161 -M 18.4 * SYLVAN LAKE 8420 32.3 23.3 139 36.9 22.6 163 THUMB DIVIDE 7980 29.9 14.5 206 36.9 23.8 155 TWO OCEAN PLATEAU 9360 50.8 27.4 185 -M 34.9 * WHISKEY CREEK 6800 22.8 14.4 158 34.9 25.1 139 WHITE MILL 8700 42.8 26.1 164 -M 32.9 * WOLVERINE 7650 12.7 7.4 172 18.4 15.4 119 ----- ----- Basin wide percent of average 170 151 WIND RIVER BURROUGHS CREEK 8750 24.4 12.0 203 28.7 19.6 146 CHRISTINA LAKE 9980 23.2 17.9 130 27.5 20.3 135 COLD SPRINGS 9630 8.8 6.2 142 16.5 13.3 124 HOBBS PARK 10100 23.3 17.8 131 19.6 17.5 112 LITTLE WARM 9620 19.8 9.7 204 24.3 16.5 147 SOUTH PASS 9040 28.4 17.9 159 30.0 20.8 144 ST. LAWRENCE ALT 8620 11.8 5.0 236 16.3 12.6 129 TOGWOTEE PASS 9580 38.7 28.0 138 39.4 32.1 123 TOWNSEND CREEK 8700 13.5 9.0 150 18.3 15.7 117 ----- ----- Basin wide percent of average 155 131 BIGHORN BASIN BALD MTN. 9375 26.5 24.1 110 22.5 21.1 107 BEAR TRAP MEADOW 7900 5.6 3.8 147 12.8 10.8 119 BLACKWATER 9780 43.2 25.6 169 33.8 20.8 162 BONE SPRINGS DIV 9350 22.5 18.1 124 21.1 18.4 115 EVENING STAR 9200 45.8 30.7 149 45.9 26.2 175 GRAVE SPRINGS 8550 13.6 -M * 14.7 12.6 117 KIRWIN 9550 17.9 11.5 156 20.1 13.5 149 LOST CREEK 8080 21.6 15.5 139 20.4 15.2 134 MARQUETTE 8760 15.3 8.5 180 16.2 13.7 118 MIDDLE POWDER 7760 19.6 14.7 133 18.7 15.0 125 OWL CREEK 8975 7.5 3.1 242 9.4 8.3 113 POWDER RIVER PASS 9480 -M 9.9 * 17.3 14.9 116 SHELL CREEK 9580 21.5 17.0 126 19.2 16.2 119 SYLVAN LAKE 8420 32.3 23.3 139 36.9 22.6 163 SYLVAN ROAD 8120 17.1 7.3 234 30.2 18.8 161 TIMBER CREEK 7950 7.6 5.5 138 11.6 10.2 114 YOUNTS PEAK 8350 25.3 17.9 141 -M 19.5 * ----- ----- Basin wide percent of average 145 136 SHOSHONE RIVER BLACKWATER 9780 43.2 25.6 169 33.8 20.8 162 EVENING STAR 9200 45.8 30.7 149 45.9 26.2 175 KIRWIN 9550 17.9 11.5 156 20.1 13.5 149 MARQUETTE 8760 15.3 8.5 180 16.2 13.7 118 SYLVAN LAKE 8420 32.3 23.3 139 36.9 22.6 163 SYLVAN ROAD 8120 17.1 7.3 234 30.2 18.8 161 YOUNTS PEAK 8350 25.3 17.9 141 -M 19.5 * ----- ----- Basin wide percent of average 158 158 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.6 3.8 147 12.8 10.8 119 BONE SPRINGS DIV 9350 22.5 18.1 124 21.1 18.4 115 BURGESS JUNCTION 7880 17.4 13.2 132 17.5 14.6 120 CLOUD PEAK RESERVOIR 9860 23.1 17.5 132 20.6 17.4 118 DOME LAKE 8880 -M 14.3 * 19.7 16.6 119 GRAVE SPRINGS 8550 13.6 -M * 14.7 12.6 117 HANSEN SAWMILL 8760 7.2 6.5 111 12.1 10.5 115 LOST CREEK 8080 21.6 15.5 139 20.4 15.2 134 MIDDLE POWDER 7760 19.6 14.7 133 18.7 15.0 125 POWDER RIVER PASS 9480 -M 9.9 * 17.3 14.9 116 SUCKER CREEK 8880 -M 13.3 * 21.4 16.8 127 TIE CREEK 6870 8.1 -M * 17.5 14.0 125 ----- ----- Basin wide percent of average 131 121 BELLE FOURCHE BLIND PARK 6890 8.2 8.9 92 19.4 14.1 138 NORTH RAPID CREEK 6130 10.7 -M * 18.3 -M * WARREN PEAK 6520 20.7 8.9 233 -M 10.5 * ----- ----- Basin wide percent of average 162 138* UPPER N. PLATTE RIVER COLUMBINE 9400 29.8 21.0 142 38.2 28.3 135 DIVIDE PEAK 8800 28.2 18.3 154 29.9 27.5 109 ELK RIVER 8700 26.3 15.1 174 30.7 22.3 138 JOE WRIGHT 10120 36.0 24.6 146 37.4 30.6 122 NORTH FRENCH CREEK 10100 41.0 29.0 141 36.1 28.3 128 OLD BATTLE 10000 49.8 38.0 131 46.5 36.0 129 SOUTH BRUSH CREEK 8400 11.0 9.9 111 21.7 20.8 104 TOWER 10500 31.8 51.1 62 57.5 43.6 132 WEBBER SPRINGS 9200 35.0 25.2 139 42.5 30.8 138 WILLOW CREEK PASS 9540 -M 13.1 * 20.1 15.6 129 ----- ----- Basin wide percent of average 124 127 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 42.5 28.3 150 34.7 24.0 145 CASPER MTN. 7900 26.7 16.9 158 27.2 19.1 142 CHRISTINA LAKE 9980 23.2 17.9 130 27.5 20.3 135 DEADMAN HILL 10220 24.2 19.0 127 24.5 21.3 115 LAPRELE CREEK 8320 12.9 5.9 219 18.0 14.9 121 RENO HILL 8400 25.8 12.7 203 26.6 22.5 118 ROACH 9700 26.4 17.8 148 27.7 26.1 106 SAND LAKE 10080 45.2 36.9 122 35.0 25.0 140 SOUTH PASS 9040 28.4 17.9 159 30.0 20.8 144 WINDY PEAK 7840 6.9 7.3 95 14.3 12.4 115 ----- ----- Basin wide percent of average 145 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.1 4.1 149 32.1 18.7 172 DIVIDE PEAK 8800 28.2 18.3 154 29.9 27.5 109 OLD BATTLE 10000 49.8 38.0 131 46.5 36.0 129 SANDSTONE RS 8150 13.6 8.7 156 26.2 23.2 113 WHISKEY PARK 8950 45.4 29.0 157 40.9 34.3 119 ----- ----- Basin wide percent of average 146 126 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.4 13.3 138 19.5 18.6 105 BLIND BULL SUM 8650 44.7 22.7 197 36.9 27.1 136 EAST RIM DIVIDE 7930 16.6 14.5 114 18.8 17.4 108 ELKHART PARK G.S. 9400 18.9 13.4 141 20.9 18.3 114 GROS VENTRE SUMMIT 8775 23.8 13.4 178 23.1 18.2 127 KENDALL R.S. 7740 19.1 9.1 210 25.0 17.7 141 LOOMIS PARK 8240 -M 14.6 * 29.7 21.6 138 NEW FORK LAKE 8340 12.3 8.7 141 15.0 16.5 91 SNIDER BASIN 8250 21.2 12.4 171 21.9 17.3 127 SPRING CREEK DIVIDE 9000 42.1 29.1 145 37.3 31.0 120 TRIPLE PEAK 8500 35.3 24.5 144 43.7 35.2 124 ----- ----- Basin wide percent of average 157 122 LOWER GREEN RIVER HAMS FORK 7840 13.1 4.9 267 18.8 15.3 123 HEWINTA 9500 9.2 4.5 204 17.3 16.5 105 HICKERSON PARK 9150 9.7 2.6 373 12.5 12.5 100 HOLE-IN-ROCK 9150 8.2 2.0 410 12.9 12.5 103 INDIAN CREEK 9425 43.8 28.3 155 36.8 29.4 125 KELLEY R.S. 8180 23.1 14.3 162 35.1 21.5 163 STEEL CREEK PARK 10100 21.0 18.6 113 19.9 16.3 122 ----- ----- Basin wide percent of average 170 124 UPPER BEAR RIVER BUG LAKE 7950 34.6 15.2 228 34.4 22.7 152 HAYDEN FORK 9400 15.2 5.8 262 29.9 23.2 129 KELLEY R.S. 8180 23.1 14.3 162 35.1 21.5 163 LILY LAKE 9050 16.6 8.3 200 23.7 18.2 130 MONTE CRISTO 8960 43.1 25.6 168 39.3 30.5 129 SALT RIVER SUMMIT 7600 20.1 9.3 216 26.7 19.3 138 TRIAL LAKE 9960 36.9 23.6 156 37.0 28.5 130 ----- ----- Basin wide percent of average 186 138 ----------------------------------------------------------------------------- -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.