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 FRIDAY: FEBRUARY 21 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.9 14.8 175 27.5 19.0 145 COTTONWOOD CREEK 7600 26.0 17.3 150 27.4 20.9 131 GRANITE CREEK 6770 26.4 14.5 182 22.3 20.0 112 GRASSY LAKE 7265 39.8 29.7 134 38.6 30.8 125 GROS VENTRE SUMMIT 8775 18.7 12.2 153 17.6 13.5 130 LEWIS LAKE DIVIDE 7860 47.4 27.7 171 -M 31.3 * PHILLIPS BENCH 8200 35.2 22.9 154 39.5 24.7 160 SALT RIVER SUMMIT 7600 19.6 11.2 175 21.1 14.3 148 SNAKE RIVER STATION 6920 25.1 15.2 165 32.2 21.6 149 SPRING CREEK DIVIDE 9000 31.9 21.8 146 -M 22.8 * THUMB DIVIDE 7980 27.9 13.5 207 -M 17.8 * TOGWOTEE PASS 9580 29.7 19.7 151 -M 23.4 * TWO OCEAN PLATEAU 9360 38.3 21.2 181 -M 26.2 * WILLOW CREEK 8450 32.8 24.7 133 36.2 26.9 135 ----- ----- Basin wide percent of average 159 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 30.6 18.8 163 -M 14.2 * BLACK BEAR 7950 -M 29.8 * -M 31.6 * CANYON 7940 20.9 10.0 209 23.2 11.5 202 FISHER CREEK 9100 48.4 28.6 169 -M 29.0 * MADISON PLATEAU 7750 35.4 19.4 182 34.7 20.5 169 NORTHEAST ENTRANCE 7350 11.0 7.6 145 17.2 9.7 177 PARKER PEAK 9400 27.3 17.0 161 -M 12.4 * SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 * THUMB DIVIDE 7980 27.9 13.5 207 -M 17.8 * TWO OCEAN PLATEAU 9360 38.3 21.2 181 -M 26.2 * WHISKEY CREEK 6800 22.0 13.5 163 -M 17.0 * WHITE MILL 8700 33.1 20.1 165 -M 22.5 * WOLVERINE 7650 13.7 9.5 144 13.5 10.4 130 ----- ----- Basin wide percent of average 171 170* WIND RIVER BURROUGHS CREEK 8750 20.8 12.4 168 -M 13.2 * CHRISTINA LAKE 9980 17.5 12.0 146 19.5 12.6 155 COLD SPRINGS 9630 8.6 6.7 128 9.7 8.0 121 HOBBS PARK 10100 14.2 11.5 123 11.3 10.6 107 LITTLE WARM 9620 14.4 8.6 167 16.0 10.3 155 SOUTH PASS 9040 22.7 13.3 171 21.6 12.9 167 ST. LAWRENCE ALT 8620 7.5 5.8 129 9.2 7.5 123 TOGWOTEE PASS 9580 29.7 19.7 151 -M 23.4 * TOWNSEND CREEK 8700 8.2 7.5 109 9.5 9.2 103 ----- ----- Basin wide percent of average 147 136 BIGHORN BASIN BALD MTN. 9375 18.2 16.1 113 15.0 13.4 112 BEAR TRAP MEADOW 7900 6.2 5.6 111 6.3 6.0 105 BLACKWATER 9780 32.1 16.9 190 24.2 14.3 169 BONE SPRINGS DIV 9350 15.1 12.6 120 13.8 11.0 125 EVENING STAR 9200 35.6 21.3 167 -M 17.9 * GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128 KIRWIN 9550 12.7 7.6 167 14.4 8.1 178 LOST CREEK 8080 12.0 9.9 121 12.1 8.8 138 MARQUETTE 8760 8.6 6.2 139 8.9 6.7 133 MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126 OWL CREEK 8975 6.2 3.4 182 5.1 4.6 111 POWDER RIVER PASS 9480 11.7 8.3 141 11.2 8.9 126 SHELL CREEK 9580 14.9 12.0 124 12.3 10.1 122 SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 * SYLVAN ROAD 8120 18.3 10.5 174 24.1 12.9 187 TIMBER CREEK 7950 5.5 4.6 120 6.1 4.8 127 YOUNTS PEAK 8350 20.1 14.1 143 -M 13.2 * ----- ----- Basin wide percent of average 146 138 SHOSHONE RIVER BLACKWATER 9780 32.1 16.9 190 24.2 14.3 169 EVENING STAR 9200 35.6 21.3 167 -M 17.9 * KIRWIN 9550 12.7 7.6 167 14.4 8.1 178 MARQUETTE 8760 8.6 6.2 139 8.9 6.7 133 SYLVAN LAKE 8420 27.3 17.5 156 -M 15.4 * SYLVAN ROAD 8120 18.3 10.5 174 24.1 12.9 187 YOUNTS PEAK 8350 20.1 14.1 143 -M 13.2 * ----- ----- Basin wide percent of average 164 170 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.2 5.6 111 6.3 6.0 105 BONE SPRINGS DIV 9350 15.1 12.6 120 13.8 11.0 125 BURGESS JUNCTION 7880 10.2 9.1 112 10.3 8.2 126 CLOUD PEAK RESERVOIR 9860 14.7 10.2 144 12.1 9.7 125 DOME LAKE 8880 10.0 10.6 94 11.5 9.9 116 GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128 HANSEN SAWMILL 8760 5.9 5.4 109 6.3 5.7 111 LOST CREEK 8080 12.0 9.9 121 12.1 8.8 138 MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126 POWDER RIVER PASS 9480 11.7 8.3 141 11.2 8.9 126 SUCKER CREEK 8880 11.6 9.1 127 11.4 10.0 114 TIE CREEK 6870 6.9 -M * 9.4 7.8 121 ----- ----- Basin wide percent of average 122 122 BELLE FOURCHE BLIND PARK 6890 9.3 8.6 108 13.3 7.2 185 NORTH RAPID CREEK 6130 9.7 -M * 11.7 -M * WARREN PEAK 6520 15.4 8.6 179 -M 5.9 * ----- ----- Basin wide percent of average 144 185* UPPER N. PLATTE RIVER COLUMBINE 9400 27.3 19.5 140 26.5 19.3 137 DIVIDE PEAK 8800 21.4 15.8 135 20.8 18.0 116 ELK RIVER 8700 25.0 15.6 160 22.4 14.6 153 JOE WRIGHT 10120 20.3 16.5 123 25.0 19.1 131 NORTH FRENCH CREEK 10100 31.0 19.1 162 25.3 17.8 142 OLD BATTLE 10000 33.9 24.6 138 28.3 23.0 123 SOUTH BRUSH CREEK 8400 13.9 8.7 160 15.5 12.3 126 TOWER 10500 49.3 35.3 140 36.2 28.3 128 WEBBER SPRINGS 9200 27.5 21.0 131 31.4 19.5 161 WILLOW CREEK PASS 9540 16.0 8.7 184 12.7 9.3 137 ----- ----- Basin wide percent of average 144 135 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 29.6 18.8 157 23.1 14.5 159 CASPER MTN. 7900 16.9 11.4 148 15.9 10.2 156 CHRISTINA LAKE 9980 17.5 12.0 146 19.5 12.6 155 DEADMAN HILL 10220 13.4 12.9 104 15.1 12.2 124 LAPRELE CREEK 8320 12.5 7.9 158 12.2 8.7 140 RENO HILL 8400 18.4 10.1 182 15.7 13.7 115 ROACH 9700 18.8 13.1 144 19.3 16.4 118 SAND LAKE 10080 31.6 25.3 125 24.9 15.5 161 SOUTH PASS 9040 22.7 13.3 171 21.6 12.9 167 WINDY PEAK 7840 8.9 5.7 156 10.0 6.8 147 ----- ----- Basin wide percent of average 146 144 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.7 9.1 173 16.1 12.1 133 DIVIDE PEAK 8800 21.4 15.8 135 20.8 18.0 116 OLD BATTLE 10000 33.9 24.6 138 28.3 23.0 123 SANDSTONE RS 8150 18.2 11.4 160 20.2 14.8 136 WHISKEY PARK 8950 33.9 22.1 153 29.2 21.8 134 ----- ----- Basin wide percent of average 148 128 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.4 11.3 145 15.4 13.8 112 BLIND BULL SUM 8650 36.2 22.9 158 -M 19.8 * EAST RIM DIVIDE 7930 14.8 11.2 132 15.2 12.9 118 ELKHART PARK G.S. 9400 16.2 10.8 150 16.5 13.6 121 GROS VENTRE SUMMIT 8775 18.7 12.2 153 17.6 13.5 130 KENDALL R.S. 7740 21.0 11.8 178 17.3 13.2 131 LOOMIS PARK 8240 -M 14.0 * 19.5 15.9 123 NEW FORK LAKE 8340 13.0 9.3 140 11.9 12.2 98 SNIDER BASIN 8250 20.7 11.9 174 17.5 12.9 136 SPRING CREEK DIVIDE 9000 31.9 21.8 146 -M 22.8 * TRIPLE PEAK 8500 30.9 20.6 150 32.4 26.4 123 ----- ----- Basin wide percent of average 153 122 LOWER GREEN RIVER HAMS FORK 7840 15.6 9.9 158 13.4 11.3 119 HEWINTA 9500 11.4 7.8 146 12.2 9.7 126 HICKERSON PARK 9150 5.9 4.6 128 7.7 6.9 112 HOLE-IN-ROCK 9150 7.0 4.2 167 8.1 6.9 117 INDIAN CREEK 9425 35.0 21.6 162 28.4 21.3 133 KELLEY R.S. 8180 21.6 13.3 162 24.3 15.9 153 STEEL CREEK PARK 10100 13.6 11.6 117 13.3 9.8 136 ----- ----- Basin wide percent of average 151 131 UPPER BEAR RIVER BUG LAKE 7950 28.7 15.7 183 26.4 15.0 176 HAYDEN FORK 9400 18.2 12.7 143 22.6 14.3 158 KELLEY R.S. 8180 21.6 13.3 162 24.3 15.9 153 LILY LAKE 9050 15.5 10.0 155 17.2 11.1 155 MONTE CRISTO 8960 36.9 21.4 172 30.0 19.6 153 SALT RIVER SUMMIT 7600 19.6 11.2 175 21.1 14.3 148 TRIAL LAKE 9960 32.7 19.5 168 31.9 18.4 173 ----- ----- Basin wide percent of average 167 160 ----------------------------------------------------------------------------- -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.