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: APRIL 26 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 27.5 12.4 222 37.6 24.8 152 COTTONWOOD CREEK 7600 31.5 21.0 150 36.4 27.8 131 GRANITE CREEK 6770 25.9 14.4 180 34.6 26.3 132 GRASSY LAKE 7265 46.8 35.1 133 58.5 41.3 142 GROS VENTRE SUMMIT 8775 23.4 14.6 160 22.5 17.8 126 LEWIS LAKE DIVIDE 7860 51.9 35.1 148 61.1 42.0 145 PHILLIPS BENCH 8200 41.3 29.9 138 49.3 33.1 149 SALT RIVER SUMMIT 7600 20.8 11.7 178 25.5 18.9 135 SNAKE RIVER STATION 6920 24.1 17.1 141 39.0 28.9 135 SPRING CREEK DIVIDE 9000 41.0 29.5 139 35.6 30.4 117 THUMB DIVIDE 7980 30.7 15.8 194 35.5 23.2 153 TOGWOTEE PASS 9580 36.7 27.9 132 36.7 31.4 117 TWO OCEAN PLATEAU 9360 48.4 27.3 177 -M 34.2 * WILLOW CREEK 8450 42.8 31.8 135 48.5 35.7 136 ----- ----- Basin wide percent of average 152 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.8 * 32.1 20.7 155 BLACK BEAR 7950 -M 39.9 * -M 45.6 * CANYON 7940 22.6 11.7 193 -M 16.0 * FISHER CREEK 9100 59.1 38.5 154 -M 41.4 * MADISON PLATEAU 7750 44.2 24.4 181 44.6 29.4 152 NORTHEAST ENTRANCE 7350 9.8 6.9 142 21.5 13.6 158 PARKER PEAK 9400 35.0 23.5 149 -M 17.8 * SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161 THUMB DIVIDE 7980 30.7 15.8 194 35.5 23.2 153 TWO OCEAN PLATEAU 9360 48.4 27.3 177 -M 34.2 * WHISKEY CREEK 6800 23.8 16.1 148 33.7 24.4 138 WHITE MILL 8700 41.2 26.1 158 -M 32.0 * WOLVERINE 7650 12.9 9.3 139 17.3 14.8 117 ----- ----- Basin wide percent of average 161 149 WIND RIVER BURROUGHS CREEK 8750 25.0 13.7 182 27.8 18.9 147 CHRISTINA LAKE 9980 21.6 17.6 123 26.4 19.6 135 COLD SPRINGS 9630 7.7 7.4 104 16.0 12.7 126 HOBBS PARK 10100 21.8 17.5 125 17.9 16.8 107 LITTLE WARM 9620 19.5 11.4 171 23.2 15.8 147 SOUTH PASS 9040 27.9 17.9 156 28.6 20.0 143 ST. LAWRENCE ALT 8620 10.9 5.9 185 14.8 12.1 122 TOGWOTEE PASS 9580 36.7 27.9 132 36.7 31.4 117 TOWNSEND CREEK 8700 13.0 9.8 133 17.1 15.0 114 ----- ----- Basin wide percent of average 143 128 BIGHORN BASIN BALD MTN. 9375 24.9 23.5 106 21.0 20.2 104 BEAR TRAP MEADOW 7900 5.9 5.0 118 11.5 10.2 113 BLACKWATER 9780 41.5 25.4 163 32.3 20.2 160 BONE SPRINGS DIV 9350 21.2 18.3 116 19.5 17.6 111 EVENING STAR 9200 44.0 30.3 145 43.7 25.4 172 GRAVE SPRINGS 8550 13.0 -M * 13.3 11.9 112 KIRWIN 9550 16.9 11.5 147 18.4 12.9 143 LOST CREEK 8080 19.6 15.6 126 18.4 14.5 127 MARQUETTE 8760 13.5 8.6 157 14.3 12.8 112 MIDDLE POWDER 7760 18.8 14.4 131 17.0 14.3 119 OWL CREEK 8975 7.4 3.8 195 8.2 7.8 105 POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.2 111 SHELL CREEK 9580 20.0 16.8 119 17.2 15.4 112 SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161 SYLVAN ROAD 8120 18.0 8.8 205 28.9 18.2 159 TIMBER CREEK 7950 7.4 6.2 119 10.3 9.5 108 YOUNTS PEAK 8350 24.7 18.3 135 -M 18.9 * ----- ----- Basin wide percent of average 137 132 SHOSHONE RIVER BLACKWATER 9780 41.5 25.4 163 32.3 20.2 160 EVENING STAR 9200 44.0 30.3 145 43.7 25.4 172 KIRWIN 9550 16.9 11.5 147 18.4 12.9 143 MARQUETTE 8760 13.5 8.6 157 14.3 12.8 112 SYLVAN LAKE 8420 31.8 23.8 134 35.2 21.8 161 SYLVAN ROAD 8120 18.0 8.8 205 28.9 18.2 159 YOUNTS PEAK 8350 24.7 18.3 135 -M 18.9 * ----- ----- Basin wide percent of average 150 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.9 5.0 118 11.5 10.2 113 BONE SPRINGS DIV 9350 21.2 18.3 116 19.5 17.6 111 BURGESS JUNCTION 7880 16.2 13.3 122 16.1 13.9 116 CLOUD PEAK RESERVOIR 9860 20.7 17.4 119 18.3 16.5 111 DOME LAKE 8880 15.6 14.9 105 17.1 15.9 108 GRAVE SPRINGS 8550 13.0 -M * 13.3 11.9 112 HANSEN SAWMILL 8760 5.8 7.1 82 10.2 9.9 103 LOST CREEK 8080 19.6 15.6 126 18.4 14.5 127 MIDDLE POWDER 7760 18.8 14.4 131 17.0 14.3 119 POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.2 111 SUCKER CREEK 8880 17.5 13.6 129 18.6 15.9 117 TIE CREEK 6870 7.0 -M * 15.2 13.3 114 ----- ----- Basin wide percent of average 118 114 BELLE FOURCHE BLIND PARK 6890 8.1 10.2 79 17.8 13.2 135 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 20.5 10.2 201 -M 9.9 * ----- ----- Basin wide percent of average 140 135* UPPER N. PLATTE RIVER COLUMBINE 9400 28.6 22.8 125 35.4 27.5 129 DIVIDE PEAK 8800 28.3 20.1 141 27.4 26.6 103 ELK RIVER 8700 27.9 17.5 159 28.3 21.6 131 JOE WRIGHT 10120 32.5 24.5 133 34.2 29.4 116 NORTH FRENCH CREEK 10100 38.8 29.0 134 32.9 27.3 121 OLD BATTLE 10000 44.4 37.5 118 41.9 34.8 120 SOUTH BRUSH CREEK 8400 11.3 11.4 99 19.5 19.9 98 TOWER 10500 59.2 50.4 117 54.5 42.0 130 WEBBER SPRINGS 9200 31.9 26.8 119 39.1 29.7 132 WILLOW CREEK PASS 9540 22.7 13.5 168 18.4 14.9 123 ----- ----- Basin wide percent of average 128 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 40.6 28.9 140 32.4 23.1 140 CASPER MTN. 7900 24.2 18.2 133 23.9 18.0 133 CHRISTINA LAKE 9980 21.6 17.6 123 26.4 19.6 135 DEADMAN HILL 10220 22.0 18.7 118 22.4 20.4 110 LAPRELE CREEK 8320 13.0 7.5 173 16.3 14.2 115 RENO HILL 8400 24.0 14.1 170 23.7 21.9 108 ROACH 9700 25.8 18.1 143 25.2 25.0 101 SAND LAKE 10080 43.1 36.7 117 33.9 24.1 141 SOUTH PASS 9040 27.9 17.9 156 28.6 20.0 143 WINDY PEAK 7840 8.0 8.3 96 13.3 11.8 113 ----- ----- Basin wide percent of average 135 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.1 6.7 121 30.4 18.0 169 DIVIDE PEAK 8800 28.3 20.1 141 27.4 26.6 103 OLD BATTLE 10000 44.4 37.5 118 41.9 34.8 120 SANDSTONE RS 8150 14.3 11.5 124 23.5 22.3 105 WHISKEY PARK 8950 42.3 29.9 141 36.8 33.0 112 ----- ----- Basin wide percent of average 130 119 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.7 14.4 130 18.3 18.2 101 BLIND BULL SUM 8650 43.2 25.3 171 35.3 26.5 133 EAST RIM DIVIDE 7930 16.9 14.9 113 18.2 17.0 107 ELKHART PARK G.S. 9400 18.7 14.3 131 19.6 17.9 109 GROS VENTRE SUMMIT 8775 23.4 14.6 160 22.5 17.8 126 KENDALL R.S. 7740 20.1 11.4 176 24.5 17.3 142 LOOMIS PARK 8240 -M 15.7 * 28.6 21.1 136 NEW FORK LAKE 8340 13.2 9.6 138 14.0 16.1 87 SNIDER BASIN 8250 22.0 13.8 159 21.1 16.9 125 SPRING CREEK DIVIDE 9000 41.0 29.5 139 35.6 30.4 117 TRIPLE PEAK 8500 35.4 25.6 138 41.8 34.5 121 ----- ----- Basin wide percent of average 146 120 LOWER GREEN RIVER HAMS FORK 7840 13.8 5.7 242 17.8 15.0 119 HEWINTA 9500 9.9 6.5 152 16.1 15.8 102 HICKERSON PARK 9150 11.6 4.1 283 12.0 11.8 102 HOLE-IN-ROCK 9150 9.6 3.5 274 12.3 11.8 104 INDIAN CREEK 9425 42.4 29.4 144 34.9 28.8 121 KELLEY R.S. 8180 23.2 15.8 147 33.0 21.0 157 STEEL CREEK PARK 10100 18.9 18.6 102 18.4 15.6 118 ----- ----- Basin wide percent of average 155 121 UPPER BEAR RIVER BUG LAKE 7950 34.3 17.2 199 32.9 22.1 149 HAYDEN FORK 9400 15.5 7.9 196 27.6 22.4 123 KELLEY R.S. 8180 23.2 15.8 147 33.0 21.0 157 LILY LAKE 9050 16.5 10.0 165 21.8 17.5 125 MONTE CRISTO 8960 41.3 27.2 152 37.0 29.5 125 SALT RIVER SUMMIT 7600 20.8 11.7 178 25.5 18.9 135 TRIAL LAKE 9960 36.9 24.6 150 36.5 27.6 132 ----- ----- Basin wide percent of average 165 135 ----------------------------------------------------------------------------- -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.