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: APRIL 17 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.5 15.3 199 36.1 24.1 150 COTTONWOOD CREEK 7600 32.4 22.9 141 34.0 27.0 126 GRANITE CREEK 6770 28.0 17.2 163 33.5 25.5 131 GRASSY LAKE 7265 49.1 37.3 132 56.3 40.1 140 GROS VENTRE SUMMIT 8775 22.7 15.7 145 21.9 17.3 127 LEWIS LAKE DIVIDE 7860 53.2 36.5 146 -M 40.8 * PHILLIPS BENCH 8200 45.4 30.7 148 47.2 32.2 147 SALT RIVER SUMMIT 7600 21.9 13.4 163 24.6 18.3 134 SNAKE RIVER STATION 6920 27.7 18.3 151 37.6 28.1 134 SPRING CREEK DIVIDE 9000 38.3 29.4 130 33.7 29.5 114 THUMB DIVIDE 7980 33.6 17.1 196 34.0 22.5 151 TOGWOTEE PASS 9580 35.7 27.2 131 35.3 30.5 116 TWO OCEAN PLATEAU 9360 47.2 26.7 177 -M 33.2 * WILLOW CREEK 8450 41.0 31.7 129 45.6 34.7 131 ----- ----- Basin wide percent of average 149 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 37.1 25.6 145 31.9 19.8 161 BLACK BEAR 7950 -M 40.2 * -M 44.1 * CANYON 7940 23.2 13.2 176 -M 15.4 * FISHER CREEK 9100 56.8 38.0 149 -M 39.8 * MADISON PLATEAU 7750 43.5 25.4 171 43.1 28.4 152 NORTHEAST ENTRANCE 7350 12.4 8.6 144 19.8 13.0 152 PARKER PEAK 9400 32.6 23.3 140 -M 17.0 * SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162 THUMB DIVIDE 7980 33.6 17.1 196 34.0 22.5 151 TWO OCEAN PLATEAU 9360 47.2 26.7 177 -M 33.2 * WHISKEY CREEK 6800 25.2 17.8 142 32.1 23.6 136 WHITE MILL 8700 39.5 25.9 153 -M 30.8 * WOLVERINE 7650 13.5 11.3 119 16.1 14.1 114 ----- ----- Basin wide percent of average 155 148 WIND RIVER BURROUGHS CREEK 8750 24.1 15.0 161 26.9 18.1 149 CHRISTINA LAKE 9980 20.8 16.9 123 24.2 18.6 130 COLD SPRINGS 9630 10.1 8.5 119 13.5 11.9 113 HOBBS PARK 10100 19.1 16.7 114 15.5 15.9 97 LITTLE WARM 9620 18.7 13.1 143 21.3 14.9 143 SOUTH PASS 9040 25.8 17.7 146 26.2 19.0 138 ST. LAWRENCE ALT 8620 9.5 6.9 138 12.8 11.4 112 TOGWOTEE PASS 9580 35.7 27.2 131 35.3 30.5 116 TOWNSEND CREEK 8700 11.0 10.3 107 14.0 14.1 99 ----- ----- Basin wide percent of average 132 123 BIGHORN BASIN BALD MTN. 9375 24.1 22.5 107 20.2 19.2 105 BEAR TRAP MEADOW 7900 7.9 6.6 120 10.8 9.5 114 BLACKWATER 9780 40.4 24.8 163 31.2 19.4 161 BONE SPRINGS DIV 9350 20.6 18.1 114 18.7 16.7 112 EVENING STAR 9200 42.7 29.4 145 41.6 24.4 170 GRAVE SPRINGS 8550 13.7 -M * 12.6 11.1 114 KIRWIN 9550 15.5 11.2 138 17.2 12.1 142 LOST CREEK 8080 18.7 15.3 122 17.6 13.5 130 MARQUETTE 8760 13.0 8.7 149 13.6 11.6 117 MIDDLE POWDER 7760 19.0 13.8 138 16.3 13.4 122 OWL CREEK 8975 8.4 4.5 187 7.5 7.2 104 POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.2 114 SHELL CREEK 9580 19.7 16.3 121 16.5 14.6 113 SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162 SYLVAN ROAD 8120 20.4 10.4 196 27.7 17.5 158 TIMBER CREEK 7950 8.0 6.5 123 9.1 8.6 106 YOUNTS PEAK 8350 25.2 18.3 138 -M 18.1 * ----- ----- Basin wide percent of average 137 133 SHOSHONE RIVER BLACKWATER 9780 40.4 24.8 163 31.2 19.4 161 EVENING STAR 9200 42.7 29.4 145 41.6 24.4 170 KIRWIN 9550 15.5 11.2 138 17.2 12.1 142 MARQUETTE 8760 13.0 8.7 149 13.6 11.6 117 SYLVAN LAKE 8420 32.4 23.9 136 33.9 20.9 162 SYLVAN ROAD 8120 20.4 10.4 196 27.7 17.5 158 YOUNTS PEAK 8350 25.2 18.3 138 -M 18.1 * ----- ----- Basin wide percent of average 150 156 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.9 6.6 120 10.8 9.5 114 BONE SPRINGS DIV 9350 20.6 18.1 114 18.7 16.7 112 BURGESS JUNCTION 7880 16.0 13.0 123 15.9 13.0 122 CLOUD PEAK RESERVOIR 9860 19.8 16.9 117 17.1 15.3 112 DOME LAKE 8880 15.7 14.8 106 16.6 14.9 111 GRAVE SPRINGS 8550 13.7 -M * 12.6 11.1 114 HANSEN SAWMILL 8760 6.8 7.5 91 9.7 9.2 105 LOST CREEK 8080 18.7 15.3 122 17.6 13.5 130 MIDDLE POWDER 7760 19.0 13.8 138 16.3 13.4 122 POWDER RIVER PASS 9480 -M 11.5 * 15.0 13.2 114 SUCKER CREEK 8880 17.4 13.4 130 18.2 14.9 122 TIE CREEK 6870 7.9 -M * 14.7 12.5 118 ----- ----- Basin wide percent of average 119 117 BELLE FOURCHE BLIND PARK 6890 10.8 11.3 96 17.1 12.0 143 NORTH RAPID CREEK 6130 12.6 -M * 15.3 -M * WARREN PEAK 6520 21.5 11.3 190 -M 9.2 * ----- ----- Basin wide percent of average 143 143* UPPER N. PLATTE RIVER COLUMBINE 9400 30.6 24.1 127 34.0 26.4 129 DIVIDE PEAK 8800 29.1 21.5 135 27.4 25.2 109 ELK RIVER 8700 29.8 19.9 150 27.7 20.7 134 JOE WRIGHT 10120 29.1 24.3 120 32.2 27.8 116 NORTH FRENCH CREEK 10100 38.3 28.4 135 31.4 25.9 121 OLD BATTLE 10000 44.2 36.1 122 41.1 33.1 124 SOUTH BRUSH CREEK 8400 14.0 12.7 110 19.2 18.6 103 TOWER 10500 58.1 49.3 118 48.5 39.9 122 WEBBER SPRINGS 9200 32.8 28.3 116 38.7 28.1 138 WILLOW CREEK PASS 9540 22.4 13.5 166 17.9 14.1 127 ----- ----- Basin wide percent of average 127 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 38.4 29.0 132 29.7 21.7 137 CASPER MTN. 7900 25.2 18.9 133 23.0 16.6 139 CHRISTINA LAKE 9980 20.8 16.9 123 24.2 18.6 130 DEADMAN HILL 10220 18.8 18.0 104 20.7 19.0 109 LAPRELE CREEK 8320 15.7 9.5 165 16.2 13.3 122 RENO HILL 8400 25.9 15.2 170 23.2 20.9 111 ROACH 9700 24.5 18.1 135 24.3 23.6 103 SAND LAKE 10080 41.8 35.9 116 32.3 22.7 142 SOUTH PASS 9040 25.8 17.7 146 26.2 19.0 138 WINDY PEAK 7840 11.5 9.1 126 13.6 10.9 125 ----- ----- Basin wide percent of average 132 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.3 10.1 161 29.9 17.0 176 DIVIDE PEAK 8800 29.1 21.5 135 27.4 25.2 109 OLD BATTLE 10000 44.2 36.1 122 41.1 33.1 124 SANDSTONE RS 8150 19.5 14.6 134 23.4 20.9 112 WHISKEY PARK 8950 42.1 30.6 138 34.2 31.3 109 ----- ----- Basin wide percent of average 134 122 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.2 15.2 120 17.9 17.6 102 BLIND BULL SUM 8650 46.5 30.0 155 34.0 25.8 132 EAST RIM DIVIDE 7930 17.5 15.0 117 17.8 16.5 108 ELKHART PARK G.S. 9400 19.4 14.9 130 19.4 17.3 112 GROS VENTRE SUMMIT 8775 22.7 15.7 145 21.9 17.3 127 KENDALL R.S. 7740 23.3 12.8 182 24.1 16.8 143 LOOMIS PARK 8240 -M 16.7 * 28.0 20.4 137 NEW FORK LAKE 8340 15.4 10.5 147 13.8 15.7 88 SNIDER BASIN 8250 24.6 15.2 162 20.0 16.4 122 SPRING CREEK DIVIDE 9000 38.3 29.4 130 33.7 29.5 114 TRIPLE PEAK 8500 36.7 26.7 137 38.9 33.5 116 ----- ----- Basin wide percent of average 142 119 LOWER GREEN RIVER HAMS FORK 7840 15.2 5.7 267 15.4 14.5 106 HEWINTA 9500 13.4 8.5 158 15.2 14.8 103 HICKERSON PARK 9150 10.7 6.1 175 11.4 11.0 104 HOLE-IN-ROCK 9150 11.5 5.7 202 11.7 11.0 106 INDIAN CREEK 9425 43.2 30.2 143 32.8 28.0 117 KELLEY R.S. 8180 25.1 17.3 145 26.8 20.3 132 STEEL CREEK PARK 10100 17.5 18.0 97 17.2 14.6 118 ----- ----- Basin wide percent of average 149 114 UPPER BEAR RIVER BUG LAKE 7950 34.9 19.5 179 30.5 21.2 144 HAYDEN FORK 9400 18.0 10.3 175 26.2 21.2 124 KELLEY R.S. 8180 25.1 17.3 145 26.8 20.3 132 LILY LAKE 9050 18.2 12.4 147 20.5 16.5 124 MONTE CRISTO 8960 41.0 28.9 142 34.4 28.2 122 SALT RIVER SUMMIT 7600 21.9 13.4 163 24.6 18.3 134 TRIAL LAKE 9960 36.8 25.8 143 35.3 26.3 134 ----- ----- Basin wide percent of average 154 130 ----------------------------------------------------------------------------- -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.