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 TUESDAY: APRIL 1 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 29.7 17.8 167 34.8 22.8 153 COTTONWOOD CREEK 7600 31.3 24.5 128 32.9 25.7 128 GRANITE CREEK 6770 29.1 18.8 155 33.1 24.0 138 GRASSY LAKE 7265 46.1 36.3 127 53.1 38.1 139 GROS VENTRE SUMMIT 8775 22.7 15.8 144 21.5 16.3 132 LEWIS LAKE DIVIDE 7860 52.1 35.7 146 45.8 38.7 118 PHILLIPS BENCH 8200 43.0 29.4 146 45.8 30.6 150 SALT RIVER SUMMIT 7600 21.6 14.5 149 23.6 17.3 136 SNAKE RIVER STATION 6920 28.2 18.8 150 36.4 26.7 136 SPRING CREEK DIVIDE 9000 35.6 28.3 126 32.8 28.1 117 THUMB DIVIDE 7980 31.9 17.2 185 -M 21.3 * TOGWOTEE PASS 9580 34.8 25.2 138 -M 29.0 * TWO OCEAN PLATEAU 9360 45.2 26.8 169 -M 31.4 * WILLOW CREEK 8450 40.8 30.5 134 41.8 32.9 127 ----- ----- Basin wide percent of average 145 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 35.4 23.8 149 30.4 18.2 167 BLACK BEAR 7950 -M 38.5 * -M 41.3 * CANYON 7940 23.1 13.1 176 26.3 14.4 183 FISHER CREEK 9100 56.0 36.1 155 -M 37.1 * MADISON PLATEAU 7750 42.0 24.8 169 42.2 26.7 158 NORTHEAST ENTRANCE 7350 12.0 9.2 130 19.4 11.9 163 PARKER PEAK 9400 31.6 21.8 145 -M 15.7 * SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172 THUMB DIVIDE 7980 31.9 17.2 185 -M 21.3 * TWO OCEAN PLATEAU 9360 45.2 26.8 169 -M 31.4 * WHISKEY CREEK 6800 25.6 17.5 146 31.7 22.2 143 WHITE MILL 8700 38.4 25.1 153 -M 28.7 * WOLVERINE 7650 13.9 11.7 119 15.3 12.8 120 ----- ----- Basin wide percent of average 155 158 WIND RIVER BURROUGHS CREEK 8750 23.8 15.0 159 25.8 16.7 154 CHRISTINA LAKE 9980 19.5 15.4 127 23.1 16.8 138 COLD SPRINGS 9630 9.8 8.4 117 12.0 10.6 113 HOBBS PARK 10100 17.1 15.1 113 13.3 14.2 94 LITTLE WARM 9620 17.9 11.6 154 20.1 13.3 151 SOUTH PASS 9040 24.9 16.4 152 24.7 17.1 144 ST. LAWRENCE ALT 8620 8.6 7.6 113 10.6 10.2 104 TOGWOTEE PASS 9580 34.8 25.2 138 -M 29.0 * TOWNSEND CREEK 8700 9.7 9.9 98 11.8 12.5 94 ----- ----- Basin wide percent of average 133 127 BIGHORN BASIN BALD MTN. 9375 22.3 20.5 109 18.5 17.4 106 BEAR TRAP MEADOW 7900 6.9 7.2 96 8.7 8.2 106 BLACKWATER 9780 37.9 22.4 169 28.9 18.1 160 BONE SPRINGS DIV 9350 19.1 16.5 116 16.5 15.1 109 EVENING STAR 9200 41.0 27.2 151 39.8 22.7 175 GRAVE SPRINGS 8550 12.4 -M * 11.3 9.6 118 KIRWIN 9550 14.6 10.0 146 15.8 10.8 146 LOST CREEK 8080 15.8 13.7 115 15.8 11.8 134 MARQUETTE 8760 11.1 8.1 137 11.6 9.5 122 MIDDLE POWDER 7760 17.3 12.2 142 15.0 11.8 127 OWL CREEK 8975 7.9 4.6 172 6.6 6.2 106 POWDER RIVER PASS 9480 13.2 10.9 121 13.4 11.5 117 SHELL CREEK 9580 17.9 15.0 119 14.7 13.1 112 SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172 SYLVAN ROAD 8120 20.3 12.5 162 26.9 16.2 166 TIMBER CREEK 7950 7.0 6.3 111 8.1 7.0 116 YOUNTS PEAK 8350 24.2 17.3 140 -M 16.7 * ----- ----- Basin wide percent of average 136 137 SHOSHONE RIVER BLACKWATER 9780 37.9 22.4 169 28.9 18.1 160 EVENING STAR 9200 41.0 27.2 151 39.8 22.7 175 KIRWIN 9550 14.6 10.0 146 15.8 10.8 146 MARQUETTE 8760 11.1 8.1 137 11.6 9.5 122 SYLVAN LAKE 8420 32.6 22.3 146 33.1 19.3 172 SYLVAN ROAD 8120 20.3 12.5 162 26.9 16.2 166 YOUNTS PEAK 8350 24.2 17.3 140 -M 16.7 * ----- ----- Basin wide percent of average 152 162 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 7.2 96 8.7 8.2 106 BONE SPRINGS DIV 9350 19.1 16.5 116 16.5 15.1 109 BURGESS JUNCTION 7880 14.0 11.8 119 13.6 11.5 118 CLOUD PEAK RESERVOIR 9860 17.5 14.9 117 15.2 13.3 114 DOME LAKE 8880 13.4 13.8 97 14.4 13.2 109 GRAVE SPRINGS 8550 12.4 -M * 11.3 9.6 118 HANSEN SAWMILL 8760 6.7 7.1 94 8.4 7.9 106 LOST CREEK 8080 15.8 13.7 115 15.8 11.8 134 MIDDLE POWDER 7760 17.3 12.2 142 15.0 11.8 127 POWDER RIVER PASS 9480 13.2 10.9 121 13.4 11.5 117 SUCKER CREEK 8880 14.7 12.2 120 15.5 13.1 118 TIE CREEK 6870 7.4 -M * 12.4 11.0 113 ----- ----- Basin wide percent of average 115 116 BELLE FOURCHE BLIND PARK 6890 9.5 11.1 86 14.7 10.0 147 NORTH RAPID CREEK 6130 9.4 -M * 13.0 -M * WARREN PEAK 6520 18.1 11.1 163 -M 8.0 * ----- ----- Basin wide percent of average 124 147* UPPER N. PLATTE RIVER COLUMBINE 9400 28.3 24.9 114 30.9 24.5 126 DIVIDE PEAK 8800 25.6 21.3 120 24.2 22.8 106 ELK RIVER 8700 26.2 20.0 131 24.4 19.2 127 JOE WRIGHT 10120 24.5 22.1 111 28.7 25.0 115 NORTH FRENCH CREEK 10100 35.3 25.6 138 27.6 23.5 117 OLD BATTLE 10000 39.7 32.2 123 36.8 30.2 122 SOUTH BRUSH CREEK 8400 13.6 13.4 101 17.4 16.3 107 TOWER 10500 53.9 45.4 119 47.1 36.2 130 WEBBER SPRINGS 9200 31.0 28.3 110 35.6 25.2 141 WILLOW CREEK PASS 9540 17.9 12.0 149 14.7 12.6 117 ----- ----- Basin wide percent of average 121 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 35.2 26.4 133 27.1 19.4 140 CASPER MTN. 7900 21.2 16.6 128 20.2 14.0 144 CHRISTINA LAKE 9980 19.5 15.4 127 23.1 16.8 138 DEADMAN HILL 10220 16.2 16.6 98 18.1 16.7 108 LAPRELE CREEK 8320 13.8 10.6 130 14.1 11.8 119 RENO HILL 8400 22.4 14.4 156 19.5 19.2 102 ROACH 9700 22.5 17.4 129 21.3 21.1 101 SAND LAKE 10080 37.4 33.1 113 29.1 20.3 143 SOUTH PASS 9040 24.9 16.4 152 24.7 17.1 144 WINDY PEAK 7840 10.3 8.8 117 11.3 9.5 119 ----- ----- Basin wide percent of average 127 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 13.8 11.3 122 28.0 15.3 183 DIVIDE PEAK 8800 25.6 21.3 120 24.2 22.8 106 OLD BATTLE 10000 39.7 32.2 123 36.8 30.2 122 SANDSTONE RS 8150 17.8 15.0 119 21.9 18.6 118 WHISKEY PARK 8950 37.2 29.0 128 32.8 28.2 116 ----- ----- Basin wide percent of average 123 125 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.1 14.7 130 20.8 16.6 125 BLIND BULL SUM 8650 42.5 29.8 143 32.7 24.6 133 EAST RIM DIVIDE 7930 16.9 14.0 121 17.3 15.5 112 ELKHART PARK G.S. 9400 18.1 13.9 130 18.5 16.3 113 GROS VENTRE SUMMIT 8775 22.7 15.8 144 21.5 16.3 132 KENDALL R.S. 7740 23.7 14.7 161 23.9 15.9 150 LOOMIS PARK 8240 -M 17.6 * 27.5 19.3 142 NEW FORK LAKE 8340 15.6 11.3 138 13.4 14.8 91 SNIDER BASIN 8250 23.5 14.9 158 19.4 15.5 125 SPRING CREEK DIVIDE 9000 35.6 28.3 126 32.8 28.1 117 TRIPLE PEAK 8500 36.9 25.9 142 37.7 31.7 119 ----- ----- Basin wide percent of average 139 124 LOWER GREEN RIVER HAMS FORK 7840 15.8 12.3 128 14.7 13.7 107 HEWINTA 9500 11.0 11.5 96 14.2 13.1 108 HICKERSON PARK 9150 8.5 6.9 123 9.3 9.5 98 HOLE-IN-ROCK 9150 6.2 6.5 95 9.8 9.5 103 INDIAN CREEK 9425 39.6 29.0 137 31.7 26.6 119 KELLEY R.S. 8180 24.1 17.3 139 26.1 19.2 136 STEEL CREEK PARK 10100 16.2 16.6 98 15.9 12.8 124 ----- ----- Basin wide percent of average 121 117 UPPER BEAR RIVER BUG LAKE 7950 33.4 21.3 157 29.5 19.6 151 HAYDEN FORK 9400 17.2 16.5 104 25.6 19.1 134 KELLEY R.S. 8180 24.1 17.3 139 26.1 19.2 136 LILY LAKE 9050 17.0 13.4 127 19.6 14.8 132 MONTE CRISTO 8960 40.8 29.9 136 33.3 25.7 130 SALT RIVER SUMMIT 7600 21.6 14.5 149 23.6 17.3 136 TRIAL LAKE 9960 34.2 25.0 137 34.7 24.0 145 ----- ----- Basin wide percent of average 137 138 ----------------------------------------------------------------------------- -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.