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 SUNDAY: MAY 4 , 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 9.4 276 39.0 25.5 153 COTTONWOOD CREEK 7600 33.1 18.7 177 39.5 28.5 139 GRANITE CREEK 6770 24.9 11.7 213 35.7 27.1 132 GRASSY LAKE 7265 48.4 32.5 149 61.2 42.3 145 GROS VENTRE SUMMIT 8775 23.4 13.1 179 23.2 18.3 127 LEWIS LAKE DIVIDE 7860 55.1 33.4 165 63.6 43.0 148 PHILLIPS BENCH 8200 43.5 28.6 152 50.9 33.9 150 SALT RIVER SUMMIT 7600 19.9 8.5 234 26.8 19.4 138 SNAKE RIVER STATION 6920 21.8 15.3 142 40.8 29.7 137 SPRING CREEK DIVIDE 9000 42.3 28.8 147 37.3 31.1 120 THUMB DIVIDE 7980 30.3 14.3 212 36.9 23.8 155 TOGWOTEE PASS 9580 38.7 27.8 139 39.6 32.2 123 TWO OCEAN PLATEAU 9360 51.0 27.3 187 -M 35.1 * WILLOW CREEK 8450 45.3 31.0 146 53.4 36.6 146 ----- ----- Basin wide percent of average 168 140 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.8 * 34.6 21.6 160 BLACK BEAR 7950 -M 39.2 * -M 46.9 * CANYON 7940 21.9 10.0 219 -M 16.6 * FISHER CREEK 9100 60.7 38.4 158 -M 42.7 * MADISON PLATEAU 7750 42.6 22.8 187 46.0 30.2 152 NORTHEAST ENTRANCE 7350 8.8 5.2 169 22.7 14.2 160 PARKER PEAK 9400 37.5 23.5 160 -M 18.5 * SYLVAN LAKE 8420 32.3 23.1 140 36.9 22.7 163 THUMB DIVIDE 7980 30.3 14.3 212 36.9 23.8 155 TWO OCEAN PLATEAU 9360 51.0 27.3 187 -M 35.1 * WHISKEY CREEK 6800 22.7 14.0 162 34.9 25.2 138 WHITE MILL 8700 42.8 26.0 165 -M 33.0 * WOLVERINE 7650 12.5 7.0 179 18.4 15.5 119 ----- ----- Basin wide percent of average 172 150 WIND RIVER BURROUGHS CREEK 8750 24.4 11.6 210 28.8 19.7 146 CHRISTINA LAKE 9980 23.4 17.8 131 27.6 20.4 135 COLD SPRINGS 9630 9.0 5.9 153 16.6 13.4 124 HOBBS PARK 10100 23.1 17.8 130 19.6 17.6 111 LITTLE WARM 9620 19.9 9.3 214 24.4 16.6 147 SOUTH PASS 9040 28.4 17.8 160 30.0 20.9 144 ST. LAWRENCE ALT 8620 11.8 4.8 246 16.4 12.7 129 TOGWOTEE PASS 9580 38.7 27.8 139 39.6 32.2 123 TOWNSEND CREEK 8700 13.3 8.8 151 18.5 15.8 117 ----- ----- Basin wide percent of average 158 131 BIGHORN BASIN BALD MTN. 9375 26.5 24.2 110 22.6 21.2 107 BEAR TRAP MEADOW 7900 5.4 3.6 150 12.9 10.9 118 BLACKWATER 9780 43.3 25.5 170 34.0 20.9 163 BONE SPRINGS DIV 9350 21.9 18.0 122 21.3 18.5 115 EVENING STAR 9200 45.9 30.7 150 45.9 26.3 175 GRAVE SPRINGS 8550 13.6 -M * 14.7 12.8 115 KIRWIN 9550 17.9 11.4 157 20.2 13.6 149 LOST CREEK 8080 21.7 15.3 142 20.4 15.4 132 MARQUETTE 8760 15.3 8.4 182 16.2 13.9 117 MIDDLE POWDER 7760 19.4 14.6 133 18.8 15.1 125 OWL CREEK 8975 7.4 2.9 255 9.6 8.4 114 POWDER RIVER PASS 9480 -M 9.6 * 17.4 15.0 116 SHELL CREEK 9580 21.9 17.0 129 19.2 16.3 118 SYLVAN LAKE 8420 32.3 23.1 140 36.9 22.7 163 SYLVAN ROAD 8120 16.5 7.1 232 30.2 18.9 160 TIMBER CREEK 7950 7.5 5.2 144 11.6 10.4 112 YOUNTS PEAK 8350 25.5 17.8 143 -M 19.6 * ----- ----- Basin wide percent of average 146 135 SHOSHONE RIVER BLACKWATER 9780 43.3 25.5 170 34.0 20.9 163 EVENING STAR 9200 45.9 30.7 150 45.9 26.3 175 KIRWIN 9550 17.9 11.4 157 20.2 13.6 149 MARQUETTE 8760 15.3 8.4 182 16.2 13.9 117 SYLVAN LAKE 8420 32.3 23.1 140 36.9 22.7 163 SYLVAN ROAD 8120 16.5 7.1 232 30.2 18.9 160 YOUNTS PEAK 8350 25.5 17.8 143 -M 19.6 * ----- ----- Basin wide percent of average 159 158 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.4 3.6 150 12.9 10.9 118 BONE SPRINGS DIV 9350 21.9 18.0 122 21.3 18.5 115 BURGESS JUNCTION 7880 17.4 13.0 134 17.7 14.7 120 CLOUD PEAK RESERVOIR 9860 23.1 17.4 133 20.6 17.5 118 DOME LAKE 8880 17.7 14.0 126 19.7 16.8 117 GRAVE SPRINGS 8550 13.6 -M * 14.7 12.8 115 HANSEN SAWMILL 8760 7.1 6.3 113 12.1 10.6 114 LOST CREEK 8080 21.7 15.3 142 20.4 15.4 132 MIDDLE POWDER 7760 19.4 14.6 133 18.8 15.1 125 POWDER RIVER PASS 9480 -M 9.6 * 17.4 15.0 116 SUCKER CREEK 8880 20.6 13.1 157 21.6 16.9 128 TIE CREEK 6870 8.0 -M * 17.6 14.1 125 ----- ----- Basin wide percent of average 134 120 BELLE FOURCHE BLIND PARK 6890 8.1 8.5 95 19.5 14.2 137 NORTH RAPID CREEK 6130 10.9 -M * 18.4 -M * WARREN PEAK 6520 20.9 8.5 246 -M 10.6 * ----- ----- Basin wide percent of average 171 137* UPPER N. PLATTE RIVER COLUMBINE 9400 29.8 20.4 146 38.3 28.4 135 DIVIDE PEAK 8800 28.2 17.8 158 30.1 27.6 109 ELK RIVER 8700 26.7 14.6 183 30.9 22.3 139 JOE WRIGHT 10120 35.9 24.5 147 37.5 30.7 122 NORTH FRENCH CREEK 10100 40.9 28.8 142 36.2 28.4 127 OLD BATTLE 10000 49.9 37.9 132 46.5 36.1 129 SOUTH BRUSH CREEK 8400 11.0 9.6 115 21.7 20.9 104 TOWER 10500 31.9 51.0 63 57.6 43.8 132 WEBBER SPRINGS 9200 34.8 24.8 140 42.6 30.9 138 WILLOW CREEK PASS 9540 -M 12.9 * 20.2 15.7 129 ----- ----- Basin wide percent of average 126 127 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 42.3 28.0 151 34.8 24.1 144 CASPER MTN. 7900 26.7 16.4 163 27.3 19.2 142 CHRISTINA LAKE 9980 23.4 17.8 131 27.6 20.4 135 DEADMAN HILL 10220 24.2 19.0 127 24.6 21.4 115 LAPRELE CREEK 8320 12.5 5.7 219 18.1 15.0 121 RENO HILL 8400 25.7 12.4 207 26.8 22.6 119 ROACH 9700 26.2 17.7 148 27.8 26.2 106 SAND LAKE 10080 45.2 36.8 123 35.0 25.1 139 SOUTH PASS 9040 28.4 17.8 160 30.0 20.9 144 WINDY PEAK 7840 6.6 7.0 94 14.6 12.5 117 ----- ----- Basin wide percent of average 146 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.6 3.8 147 32.6 18.7 174 DIVIDE PEAK 8800 28.2 17.8 158 30.1 27.6 109 OLD BATTLE 10000 49.9 37.9 132 46.5 36.1 129 SANDSTONE RS 8150 13.4 8.2 163 26.2 23.3 112 WHISKEY PARK 8950 45.8 28.7 160 41.0 34.4 119 ----- ----- Basin wide percent of average 148 126 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.3 13.0 141 19.6 18.7 105 BLIND BULL SUM 8650 44.6 22.6 197 36.9 27.2 136 EAST RIM DIVIDE 7930 16.4 14.4 114 18.8 17.5 107 ELKHART PARK G.S. 9400 19.0 13.1 145 20.9 18.4 114 GROS VENTRE SUMMIT 8775 23.4 13.1 179 23.2 18.3 127 KENDALL R.S. 7740 18.6 8.3 224 25.1 17.8 141 LOOMIS PARK 8240 -M 14.3 * 29.7 21.6 138 NEW FORK LAKE 8340 12.1 8.5 142 15.1 16.6 91 SNIDER BASIN 8250 20.6 12.0 172 22.1 17.4 127 SPRING CREEK DIVIDE 9000 42.3 28.8 147 37.3 31.1 120 TRIPLE PEAK 8500 35.4 24.2 146 43.8 35.4 124 ----- ----- Basin wide percent of average 159 122 LOWER GREEN RIVER HAMS FORK 7840 12.7 4.5 282 18.9 15.4 123 HEWINTA 9500 8.3 4.2 198 17.2 16.6 104 HICKERSON PARK 9150 9.2 2.4 383 12.5 12.6 99 HOLE-IN-ROCK 9150 7.8 1.9 411 12.9 12.6 102 INDIAN CREEK 9425 44.4 28.0 159 36.9 29.5 125 KELLEY R.S. 8180 22.8 13.9 164 35.2 21.5 164 STEEL CREEK PARK 10100 20.9 18.4 114 19.9 16.5 121 ----- ----- Basin wide percent of average 172 123 UPPER BEAR RIVER BUG LAKE 7950 34.0 14.7 231 34.5 22.8 151 HAYDEN FORK 9400 15.2 5.3 287 30.0 23.3 129 KELLEY R.S. 8180 22.8 13.9 164 35.2 21.5 164 LILY LAKE 9050 16.0 8.1 198 23.7 18.3 130 MONTE CRISTO 8960 42.3 25.3 167 39.4 30.6 129 SALT RIVER SUMMIT 7600 19.9 8.5 234 26.8 19.4 138 TRIAL LAKE 9960 36.9 23.4 158 37.0 28.6 129 ----- ----- Basin wide percent of average 189 138 ----------------------------------------------------------------------------- -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.