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 THURSDAY: MARCH 20 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 29.8 17.0 175 33.6 21.8 154 COTTONWOOD CREEK 7600 30.7 22.5 136 31.2 24.4 128 GRANITE CREEK 6770 28.0 17.6 159 32.4 22.9 141 GRASSY LAKE 7265 45.0 34.0 132 51.6 35.9 144 GROS VENTRE SUMMIT 8775 21.5 14.8 145 20.3 15.5 131 LEWIS LAKE DIVIDE 7860 52.0 33.7 154 -M 36.5 * PHILLIPS BENCH 8200 40.7 27.7 147 44.0 28.9 152 SALT RIVER SUMMIT 7600 21.7 13.7 158 23.4 16.4 143 SNAKE RIVER STATION 6920 27.8 18.0 154 35.2 25.2 140 SPRING CREEK DIVIDE 9000 33.9 26.5 128 32.2 26.6 121 THUMB DIVIDE 7980 32.9 16.2 203 -M 20.3 * TOGWOTEE PASS 9580 33.6 23.6 142 -M 27.3 * TWO OCEAN PLATEAU 9360 43.1 25.3 170 -M 30.0 * WILLOW CREEK 8450 40.7 29.0 140 39.0 31.2 125 ----- ----- Basin wide percent of average 151 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 34.4 22.4 154 -M 17.0 * BLACK BEAR 7950 -M 36.2 * -M 38.4 * CANYON 7940 23.4 12.3 190 25.8 13.5 191 FISHER CREEK 9100 54.7 34.0 161 -M 34.6 * MADISON PLATEAU 7750 41.1 23.3 176 41.3 24.8 167 NORTHEAST ENTRANCE 7350 12.4 8.9 139 18.8 11.2 168 PARKER PEAK 9400 30.7 20.5 150 -M 14.7 * SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 * THUMB DIVIDE 7980 32.9 16.2 203 -M 20.3 * TWO OCEAN PLATEAU 9360 43.1 25.3 170 -M 30.0 * WHISKEY CREEK 6800 24.9 16.4 152 31.0 20.6 150 WHITE MILL 8700 37.6 24.0 157 -M 26.8 * WOLVERINE 7650 15.3 11.2 137 15.1 12.1 125 ----- ----- Basin wide percent of average 162 161* WIND RIVER BURROUGHS CREEK 8750 23.6 14.4 164 -M 15.7 * CHRISTINA LAKE 9980 18.9 14.4 131 21.5 15.4 140 COLD SPRINGS 9630 10.0 7.9 127 11.2 9.7 115 HOBBS PARK 10100 16.5 14.0 118 12.8 13.0 98 LITTLE WARM 9620 16.3 10.8 151 18.1 12.3 147 SOUTH PASS 9040 25.5 15.6 163 24.0 15.8 152 ST. LAWRENCE ALT 8620 8.4 7.2 117 10.1 9.3 109 TOGWOTEE PASS 9580 33.6 23.6 142 -M 27.3 * TOWNSEND CREEK 8700 9.8 9.3 105 11.1 11.5 97 ----- ----- Basin wide percent of average 139 125 BIGHORN BASIN BALD MTN. 9375 21.0 19.3 109 17.4 16.1 108 BEAR TRAP MEADOW 7900 7.8 6.7 116 8.2 7.5 109 BLACKWATER 9780 36.8 20.8 177 27.9 17.0 164 BONE SPRINGS DIV 9350 17.6 15.4 114 15.5 13.8 112 EVENING STAR 9200 40.5 25.5 159 -M 21.3 * GRAVE SPRINGS 8550 10.8 -M * 10.1 8.7 116 KIRWIN 9550 13.9 9.3 149 15.2 9.9 154 LOST CREEK 8080 14.1 12.5 113 14.2 10.8 131 MARQUETTE 8760 10.4 7.5 139 10.8 8.6 126 MIDDLE POWDER 7760 14.6 11.3 129 13.1 10.8 121 OWL CREEK 8975 7.7 4.2 183 6.5 5.7 114 POWDER RIVER PASS 9480 12.0 10.2 118 12.6 10.7 118 SHELL CREEK 9580 16.8 14.2 118 13.9 12.1 115 SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 * SYLVAN ROAD 8120 20.2 12.4 163 25.8 15.2 170 TIMBER CREEK 7950 6.9 5.8 119 7.5 6.3 119 YOUNTS PEAK 8350 23.2 16.4 141 -M 15.6 * ----- ----- Basin wide percent of average 139 130 SHOSHONE RIVER BLACKWATER 9780 36.8 20.8 177 27.9 17.0 164 EVENING STAR 9200 40.5 25.5 159 -M 21.3 * KIRWIN 9550 13.9 9.3 149 15.2 9.9 154 MARQUETTE 8760 10.4 7.5 139 10.8 8.6 126 SYLVAN LAKE 8420 30.9 21.0 147 -M 18.1 * SYLVAN ROAD 8120 20.2 12.4 163 25.8 15.2 170 YOUNTS PEAK 8350 23.2 16.4 141 -M 15.6 * ----- ----- Basin wide percent of average 156 157 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.8 6.7 116 8.2 7.5 109 BONE SPRINGS DIV 9350 17.6 15.4 114 15.5 13.8 112 BURGESS JUNCTION 7880 11.9 11.0 108 12.3 10.4 118 CLOUD PEAK RESERVOIR 9860 16.6 13.6 122 13.9 12.1 115 DOME LAKE 8880 12.2 12.9 95 13.2 12.1 109 GRAVE SPRINGS 8550 10.8 -M * 10.1 8.7 116 HANSEN SAWMILL 8760 7.2 6.7 107 7.8 7.2 108 LOST CREEK 8080 14.1 12.5 113 14.2 10.8 131 MIDDLE POWDER 7760 14.6 11.3 129 13.1 10.8 121 POWDER RIVER PASS 9480 12.0 10.2 118 12.6 10.7 118 SUCKER CREEK 8880 13.1 11.3 116 13.8 12.1 114 TIE CREEK 6870 7.8 -M * 10.9 9.9 110 ----- ----- Basin wide percent of average 114 115 BELLE FOURCHE BLIND PARK 6890 10.0 10.4 96 14.0 9.1 154 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 16.6 10.4 160 -M 7.3 * ----- ----- Basin wide percent of average 128 154* UPPER N. PLATTE RIVER COLUMBINE 9400 29.6 23.8 124 29.5 23.0 128 DIVIDE PEAK 8800 24.6 19.5 126 23.9 21.2 113 ELK RIVER 8700 27.5 18.9 146 24.2 17.8 136 JOE WRIGHT 10120 20.8 20.3 102 27.4 23.1 119 NORTH FRENCH CREEK 10100 34.2 23.7 144 30.0 21.7 138 OLD BATTLE 10000 11.6 29.7 39 50.5 28.0 180 SOUTH BRUSH CREEK 8400 14.1 11.8 119 16.7 15.0 111 TOWER 10500 52.3 42.4 123 36.8 33.8 109 WEBBER SPRINGS 9200 29.9 25.9 115 34.3 23.5 146 WILLOW CREEK PASS 9540 16.9 10.9 155 14.0 11.6 121 ----- ----- Basin wide percent of average 115 131 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 33.1 23.7 140 25.0 17.9 140 CASPER MTN. 7900 19.2 14.7 131 18.2 12.8 142 CHRISTINA LAKE 9980 18.9 14.4 131 21.5 15.4 140 DEADMAN HILL 10220 15.2 15.5 98 17.2 15.3 112 LAPRELE CREEK 8320 13.8 9.8 141 13.7 10.8 127 RENO HILL 8400 20.3 12.9 157 17.6 17.4 101 ROACH 9700 22.4 16.1 139 20.8 19.6 106 SAND LAKE 10080 34.7 30.8 113 27.5 18.8 146 SOUTH PASS 9040 25.5 15.6 163 24.0 15.8 152 WINDY PEAK 7840 10.0 8.0 125 11.6 8.6 135 ----- ----- Basin wide percent of average 132 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.0 10.9 147 20.9 14.3 146 DIVIDE PEAK 8800 24.6 19.5 126 23.9 21.2 113 OLD BATTLE 10000 11.6 29.7 39 50.5 28.0 180 SANDSTONE RS 8150 19.6 14.0 140 21.6 17.4 124 WHISKEY PARK 8950 37.0 27.1 137 31.8 26.0 122 ----- ----- Basin wide percent of average 108 139 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.3 13.8 140 16.1 15.8 102 BLIND BULL SUM 8650 41.3 27.9 148 32.4 23.2 140 EAST RIM DIVIDE 7930 16.9 13.4 126 17.0 14.8 115 ELKHART PARK G.S. 9400 18.2 13.1 139 18.2 15.5 117 GROS VENTRE SUMMIT 8775 21.5 14.8 145 20.3 15.5 131 KENDALL R.S. 7740 24.2 14.5 167 19.8 15.1 131 LOOMIS PARK 8240 -M 16.8 * 26.8 18.3 146 NEW FORK LAKE 8340 14.9 10.9 137 13.3 14.1 94 SNIDER BASIN 8250 23.5 14.3 164 19.1 14.8 129 SPRING CREEK DIVIDE 9000 33.9 26.5 128 32.2 26.6 121 TRIPLE PEAK 8500 36.5 24.4 150 36.5 30.2 121 ----- ----- Basin wide percent of average 144 123 LOWER GREEN RIVER HAMS FORK 7840 17.0 12.0 142 14.7 13.0 113 HEWINTA 9500 12.9 10.4 124 13.7 12.0 114 HICKERSON PARK 9150 7.7 6.1 126 8.9 8.6 103 HOLE-IN-ROCK 9150 7.2 5.8 124 9.3 8.6 108 INDIAN CREEK 9425 39.7 27.0 147 31.1 25.0 124 KELLEY R.S. 8180 23.7 16.3 145 25.1 18.3 137 STEEL CREEK PARK 10100 15.3 15.0 102 15.1 11.8 128 ----- ----- Basin wide percent of average 133 121 UPPER BEAR RIVER BUG LAKE 7950 32.7 19.6 167 29.2 18.2 160 HAYDEN FORK 9400 19.5 15.7 124 24.7 17.6 140 KELLEY R.S. 8180 23.7 16.3 145 25.1 18.3 137 LILY LAKE 9050 18.3 12.3 149 18.8 13.6 138 MONTE CRISTO 8960 37.1 27.4 135 32.6 23.8 137 SALT RIVER SUMMIT 7600 21.7 13.7 158 23.4 16.4 143 TRIAL LAKE 9960 36.3 24.1 151 34.2 22.3 153 ----- ----- Basin wide percent of average 147 144 ----------------------------------------------------------------------------- -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.