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 MONDAY: APRIL 14 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.2 16.1 188 35.6 23.8 150 COTTONWOOD CREEK 7600 31.8 23.4 136 34.0 26.8 127 GRANITE CREEK 6770 29.1 17.9 163 33.4 25.2 133 GRASSY LAKE 7265 48.2 37.7 128 53.2 39.7 134 GROS VENTRE SUMMIT 8775 23.3 16.0 146 21.8 17.1 127 LEWIS LAKE DIVIDE 7860 52.2 36.7 142 45.8 40.4 113 PHILLIPS BENCH 8200 44.1 30.8 143 46.4 31.9 145 SALT RIVER SUMMIT 7600 22.5 13.9 162 24.5 18.1 135 SNAKE RIVER STATION 6920 27.9 18.6 150 37.1 27.9 133 SPRING CREEK DIVIDE 9000 37.7 29.3 129 33.6 29.3 115 THUMB DIVIDE 7980 32.1 17.4 184 33.8 22.3 152 TOGWOTEE PASS 9580 35.4 26.9 132 34.7 30.3 115 TWO OCEAN PLATEAU 9360 46.4 26.6 174 -M 32.8 * WILLOW CREEK 8450 41.4 31.6 131 45.5 34.3 133 ----- ----- Basin wide percent of average 146 131 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.6 25.4 144 31.3 19.5 161 BLACK BEAR 7950 -M 40.1 * -M 43.6 * CANYON 7940 23.1 13.5 171 26.8 15.2 176 FISHER CREEK 9100 56.4 37.8 149 -M 39.3 * MADISON PLATEAU 7750 42.7 25.5 167 43.0 28.1 153 NORTHEAST ENTRANCE 7350 12.7 9.0 141 19.6 12.8 153 PARKER PEAK 9400 32.9 23.1 142 -M 16.8 * SYLVAN LAKE 8420 32.1 23.8 135 33.6 20.6 163 THUMB DIVIDE 7980 32.1 17.4 184 33.8 22.3 152 TWO OCEAN PLATEAU 9360 46.4 26.6 174 -M 32.8 * WHISKEY CREEK 6800 25.2 18.2 138 32.0 23.4 137 WHITE MILL 8700 38.9 25.8 151 -M 30.4 * WOLVERINE 7650 13.0 11.8 110 16.4 13.8 119 ----- ----- Basin wide percent of average 152 152 WIND RIVER BURROUGHS CREEK 8750 24.4 15.3 159 26.6 17.9 149 CHRISTINA LAKE 9980 20.9 16.6 126 24.0 18.2 132 COLD SPRINGS 9630 10.8 8.7 124 13.5 11.7 115 HOBBS PARK 10100 19.1 16.4 116 15.5 15.5 100 LITTLE WARM 9620 18.8 13.4 140 21.2 14.6 145 SOUTH PASS 9040 26.4 17.5 151 26.2 18.6 141 ST. LAWRENCE ALT 8620 10.1 7.1 142 12.8 11.2 114 TOGWOTEE PASS 9580 35.4 26.9 132 34.7 30.3 115 TOWNSEND CREEK 8700 11.5 10.4 111 14.0 13.8 101 ----- ----- Basin wide percent of average 134 124 BIGHORN BASIN BALD MTN. 9375 23.8 22.2 107 20.1 18.9 106 BEAR TRAP MEADOW 7900 -M 6.9 * 10.1 9.2 110 BLACKWATER 9780 39.7 24.5 162 30.3 19.2 158 BONE SPRINGS DIV 9350 20.5 18.0 114 18.5 16.4 113 EVENING STAR 9200 42.8 29.1 147 41.1 24.1 171 GRAVE SPRINGS 8550 13.1 -M * 12.6 10.8 117 KIRWIN 9550 15.7 11.0 143 17.1 11.9 144 LOST CREEK 8080 18.5 15.1 123 17.5 13.2 133 MARQUETTE 8760 13.1 8.7 151 13.3 11.2 119 MIDDLE POWDER 7760 19.1 13.5 141 16.2 13.1 124 OWL CREEK 8975 8.7 4.7 185 7.4 7.0 106 POWDER RIVER PASS 9480 -M 11.6 * 14.6 12.9 113 SHELL CREEK 9580 19.2 16.1 119 16.2 14.3 113 SYLVAN LAKE 8420 32.1 23.8 135 33.6 20.6 163 SYLVAN ROAD 8120 20.5 10.9 188 27.5 17.2 160 TIMBER CREEK 7950 7.5 6.6 114 9.1 8.3 110 YOUNTS PEAK 8350 25.0 18.2 137 27.5 17.8 154 ----- ----- Basin wide percent of average 138 135 SHOSHONE RIVER BLACKWATER 9780 39.7 24.5 162 30.3 19.2 158 EVENING STAR 9200 42.8 29.1 147 41.1 24.1 171 KIRWIN 9550 15.7 11.0 143 17.1 11.9 144 MARQUETTE 8760 13.1 8.7 151 13.3 11.2 119 SYLVAN LAKE 8420 32.1 23.8 135 33.6 20.6 163 SYLVAN ROAD 8120 20.5 10.9 188 27.5 17.2 160 YOUNTS PEAK 8350 25.0 18.2 137 27.5 17.8 154 ----- ----- Basin wide percent of average 150 156 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 6.9 * 10.1 9.2 110 BONE SPRINGS DIV 9350 20.5 18.0 114 18.5 16.4 113 BURGESS JUNCTION 7880 15.9 12.8 124 15.5 12.8 121 CLOUD PEAK RESERVOIR 9860 19.7 16.7 118 16.9 14.9 113 DOME LAKE 8880 13.9 14.7 95 16.5 14.6 113 GRAVE SPRINGS 8550 13.1 -M * 12.6 10.8 117 HANSEN SAWMILL 8760 6.4 7.6 84 9.3 8.9 104 LOST CREEK 8080 18.5 15.1 123 17.5 13.2 133 MIDDLE POWDER 7760 19.1 13.5 141 16.2 13.1 124 POWDER RIVER PASS 9480 -M 11.6 * 14.6 12.9 113 SUCKER CREEK 8880 17.4 13.2 132 17.9 14.6 123 TIE CREEK 6870 7.3 -M * 14.3 12.2 117 ----- ----- Basin wide percent of average 118 117 BELLE FOURCHE BLIND PARK 6890 11.3 11.6 97 17.0 11.6 147 NORTH RAPID CREEK 6130 12.3 -M * 15.1 -M * WARREN PEAK 6520 21.2 11.6 183 -M 9.0 * ----- ----- Basin wide percent of average 140 147* UPPER N. PLATTE RIVER COLUMBINE 9400 30.6 24.4 125 33.9 26.1 130 DIVIDE PEAK 8800 29.4 21.8 135 27.1 24.8 109 ELK RIVER 8700 29.7 20.4 146 27.7 20.5 135 JOE WRIGHT 10120 28.9 24.1 120 32.1 27.3 118 NORTH FRENCH CREEK 10100 37.1 28.0 133 -M 25.5 * OLD BATTLE 10000 43.9 35.5 124 40.9 32.6 125 SOUTH BRUSH CREEK 8400 13.8 13.0 106 19.2 18.2 105 TOWER 10500 58.1 48.7 119 48.4 39.2 123 WEBBER SPRINGS 9200 33.1 28.6 116 38.6 27.5 140 WILLOW CREEK PASS 9540 22.1 13.4 165 17.3 13.8 125 ----- ----- Basin wide percent of average 127 124 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 37.6 28.8 131 28.9 21.3 136 CASPER MTN. 7900 25.4 18.8 135 22.8 16.1 142 CHRISTINA LAKE 9980 20.9 16.6 126 24.0 18.2 132 DEADMAN HILL 10220 18.5 17.7 105 20.4 18.6 110 LAPRELE CREEK 8320 15.6 10.0 156 16.1 13.1 123 RENO HILL 8400 26.4 15.4 171 23.1 20.6 112 ROACH 9700 24.5 18.1 135 24.3 23.1 105 SAND LAKE 10080 40.8 35.5 115 31.6 22.3 142 SOUTH PASS 9040 26.4 17.5 151 26.2 18.6 141 WINDY PEAK 7840 10.9 9.3 117 13.1 10.7 122 ----- ----- Basin wide percent of average 132 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.4 10.9 160 29.3 16.7 175 DIVIDE PEAK 8800 29.4 21.8 135 27.1 24.8 109 OLD BATTLE 10000 43.9 35.5 124 40.9 32.6 125 SANDSTONE RS 8150 20.0 15.3 131 23.2 20.5 113 WHISKEY PARK 8950 41.3 30.6 135 33.8 30.7 110 ----- ----- Basin wide percent of average 133 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.8 15.4 129 17.8 17.4 102 BLIND BULL SUM 8650 44.4 30.9 144 33.9 25.6 132 EAST RIM DIVIDE 7930 17.4 14.9 117 17.7 16.3 109 ELKHART PARK G.S. 9400 18.6 14.9 125 19.4 17.1 113 GROS VENTRE SUMMIT 8775 23.3 16.0 146 21.8 17.1 127 KENDALL R.S. 7740 24.0 13.2 182 24.2 16.6 146 LOOMIS PARK 8240 -M 16.9 * 27.9 20.2 138 NEW FORK LAKE 8340 16.0 10.7 150 13.7 15.5 88 SNIDER BASIN 8250 23.6 15.5 152 19.9 16.2 123 SPRING CREEK DIVIDE 9000 37.7 29.3 129 33.6 29.3 115 TRIPLE PEAK 8500 36.6 26.8 137 38.6 33.1 117 ----- ----- Basin wide percent of average 139 120 LOWER GREEN RIVER HAMS FORK 7840 15.7 6.2 253 15.3 14.3 107 HEWINTA 9500 14.3 9.2 155 15.2 14.5 105 HICKERSON PARK 9150 12.6 6.6 191 11.4 10.7 107 HOLE-IN-ROCK 9150 11.8 6.2 190 11.7 10.7 109 INDIAN CREEK 9425 40.5 30.3 134 32.5 27.7 117 KELLEY R.S. 8180 25.1 17.6 143 26.3 20.1 131 STEEL CREEK PARK 10100 17.4 17.8 98 17.1 14.2 120 ----- ----- Basin wide percent of average 146 115 UPPER BEAR RIVER BUG LAKE 7950 34.4 20.1 171 30.4 20.9 145 HAYDEN FORK 9400 19.5 11.2 174 26.2 20.8 126 KELLEY R.S. 8180 25.1 17.6 143 26.3 20.1 131 LILY LAKE 9050 19.7 12.9 153 20.6 16.2 127 MONTE CRISTO 8960 42.9 29.3 146 34.2 27.7 123 SALT RIVER SUMMIT 7600 22.5 13.9 162 24.5 18.1 135 TRIAL LAKE 9960 36.5 25.9 141 35.4 25.9 137 ----- ----- Basin wide percent of average 153 132 ----------------------------------------------------------------------------- -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.