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: JANUARY 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 18.6 10.8 172 23.2 14.3 162 COTTONWOOD CREEK 7600 20.3 12.2 166 22.4 15.2 147 GRANITE CREEK 6770 20.4 10.5 194 22.5 15.1 149 GRASSY LAKE 7265 -M 19.8 * -M 23.2 * GROS VENTRE SUMMIT 8775 15.3 9.3 165 13.1 10.2 128 LEWIS LAKE DIVIDE 7860 36.9 19.6 188 36.1 23.6 153 PHILLIPS BENCH 8200 27.6 16.5 167 27.8 18.6 149 SALT RIVER SUMMIT 7600 15.2 7.6 200 16.8 10.8 156 SNAKE RIVER STATION 6920 16.2 10.7 151 23.5 16.4 143 SPRING CREEK DIVIDE 9000 26.3 15.7 168 20.1 17.0 118 THUMB DIVIDE 7980 23.0 9.9 232 21.0 13.4 157 TOGWOTEE PASS 9580 23.7 14.8 160 21.7 17.7 123 TWO OCEAN PLATEAU 9360 30.9 16.2 191 29.0 19.8 146 WILLOW CREEK 8450 29.0 18.0 161 30.2 20.0 151 ----- ----- Basin wide percent of average 177 145 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 24.8 14.4 172 20.5 10.7 192 BLACK BEAR 7950 44.9 21.2 212 -M 22.9 * CANYON 7940 16.3 7.2 226 17.5 8.7 201 FISHER CREEK 9100 39.9 21.1 189 35.7 21.3 168 MADISON PLATEAU 7750 27.6 13.9 199 -M 15.1 * NORTHEAST ENTRANCE 7350 7.9 5.6 141 13.9 7.3 190 PARKER PEAK 9400 21.9 13.0 168 15.2 9.4 162 SYLVAN LAKE 8420 21.8 13.4 163 19.9 11.9 167 THUMB DIVIDE 7980 23.0 9.9 232 21.0 13.4 157 TWO OCEAN PLATEAU 9360 30.9 16.2 191 29.0 19.8 146 WHISKEY CREEK 6800 16.3 9.6 170 23.5 12.6 187 WHITE MILL 8700 26.9 14.9 181 -M 16.8 * WOLVERINE 7650 10.5 6.9 152 11.1 7.9 141 ----- ----- Basin wide percent of average 187 169 WIND RIVER BURROUGHS CREEK 8750 17.3 9.2 188 16.9 10.1 167 CHRISTINA LAKE 9980 14.7 9.3 158 17.0 9.9 172 COLD SPRINGS 9630 -M 5.3 * 7.9 6.4 123 HOBBS PARK 10100 12.1 9.2 132 9.5 8.3 114 LITTLE WARM 9620 12.6 6.4 197 13.7 8.0 171 SOUTH PASS 9040 -M 10.2 * 18.4 9.7 190 ST. LAWRENCE ALT 8620 5.6 4.2 133 6.7 5.8 116 TOGWOTEE PASS 9580 23.7 14.8 160 21.7 17.7 123 TOWNSEND CREEK 8700 7.2 5.6 129 8.4 7.0 120 ----- ----- Basin wide percent of average 159 145 BIGHORN BASIN BALD MTN. 9375 14.3 12.5 114 11.6 10.5 110 BEAR TRAP MEADOW 7900 5.3 4.4 120 6.0 5.0 120 BLACKWATER 9780 25.9 12.5 207 19.1 10.9 175 BONE SPRINGS DIV 9350 11.9 9.6 124 10.7 8.4 127 EVENING STAR 9200 28.4 16.1 176 -M 13.6 * GRAVE SPRINGS 8550 8.6 -M * 8.3 5.9 141 KIRWIN 9550 11.0 6.1 180 11.9 6.2 192 LOST CREEK 8080 10.3 7.3 141 11.1 7.0 159 MARQUETTE 8760 7.2 4.7 153 7.5 5.4 139 MIDDLE POWDER 7760 10.8 7.1 152 10.1 7.1 142 OWL CREEK 8975 -M 2.5 * 4.5 3.4 132 POWDER RIVER PASS 9480 7.1 6.3 113 8.1 6.9 117 SHELL CREEK 9580 11.2 9.3 120 8.8 7.9 111 SYLVAN LAKE 8420 21.8 13.4 163 19.9 11.9 167 SYLVAN ROAD 8120 13.4 7.4 181 19.4 9.9 196 TIMBER CREEK 7950 4.1 3.2 128 4.6 3.9 118 YOUNTS PEAK 8350 15.6 11.0 142 19.3 10.0 193 ----- ----- Basin wide percent of average 151 150 SHOSHONE RIVER BLACKWATER 9780 25.9 12.5 207 19.1 10.9 175 EVENING STAR 9200 28.4 16.1 176 -M 13.6 * KIRWIN 9550 11.0 6.1 180 11.9 6.2 192 MARQUETTE 8760 7.2 4.7 153 7.5 5.4 139 SYLVAN LAKE 8420 21.8 13.4 163 19.9 11.9 167 SYLVAN ROAD 8120 13.4 7.4 181 19.4 9.9 196 YOUNTS PEAK 8350 15.6 11.0 142 19.3 10.0 193 ----- ----- Basin wide percent of average 173 179 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.3 4.4 120 6.0 5.0 120 BONE SPRINGS DIV 9350 11.9 9.6 124 10.7 8.4 127 BURGESS JUNCTION 7880 8.5 6.8 125 9.0 6.5 138 CLOUD PEAK RESERVOIR 9860 12.2 7.1 172 9.9 7.3 136 DOME LAKE 8880 8.1 8.0 101 8.8 8.0 110 GRAVE SPRINGS 8550 8.6 -M * 8.3 5.9 141 HANSEN SAWMILL 8760 4.6 4.1 112 5.3 4.6 115 LOST CREEK 8080 10.3 7.3 141 11.1 7.0 159 MIDDLE POWDER 7760 10.8 7.1 152 10.1 7.1 142 POWDER RIVER PASS 9480 7.1 6.3 113 8.1 6.9 117 SUCKER CREEK 8880 9.6 6.6 145 9.9 7.8 127 TIE CREEK 6870 5.7 -M * 8.0 6.3 127 ----- ----- Basin wide percent of average 131 130 BELLE FOURCHE BLIND PARK 6890 7.6 6.5 117 11.8 5.6 211 NORTH RAPID CREEK 6130 7.6 -M * 10.5 -M * WARREN PEAK 6520 13.3 6.5 205 -M 4.7 * ----- ----- Basin wide percent of average 161 211* UPPER N. PLATTE RIVER COLUMBINE 9400 15.8 13.7 115 22.4 14.2 158 DIVIDE PEAK 8800 17.0 12.0 142 17.6 14.5 121 ELK RIVER 8700 19.4 10.9 178 18.7 11.1 168 JOE WRIGHT 10120 17.0 12.7 134 21.3 14.6 146 NORTH FRENCH CREEK 10100 23.4 14.3 164 21.5 13.5 159 OLD BATTLE 10000 28.8 18.3 157 27.0 17.4 155 SOUTH BRUSH CREEK 8400 -M 6.3 * 12.8 10.4 123 TOWER 10500 40.5 26.2 155 34.6 21.2 163 WEBBER SPRINGS 9200 21.5 15.5 139 25.1 15.3 164 WILLOW CREEK PASS 9540 13.1 6.7 196 10.5 7.1 148 ----- ----- Basin wide percent of average 151 152 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.2 14.6 159 -M 10.7 * CASPER MTN. 7900 13.1 8.6 152 13.0 8.0 163 CHRISTINA LAKE 9980 14.7 9.3 158 17.0 9.9 172 DEADMAN HILL 10220 10.8 10.0 108 12.1 9.2 132 LAPRELE CREEK 8320 10.2 5.9 173 9.7 6.6 147 RENO HILL 8400 11.4 7.6 150 12.7 10.7 119 ROACH 9700 15.3 9.8 156 15.8 12.7 124 SAND LAKE 10080 24.7 18.9 131 19.6 11.6 169 SOUTH PASS 9040 -M 10.2 * 18.4 9.7 190 WINDY PEAK 7840 6.6 3.9 169 8.4 5.2 162 ----- ----- Basin wide percent of average 147 152 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.7 6.5 180 13.5 9.6 141 DIVIDE PEAK 8800 17.0 12.0 142 17.6 14.5 121 OLD BATTLE 10000 28.8 18.3 157 27.0 17.4 155 SANDSTONE RS 8150 14.0 8.2 171 16.3 11.6 141 WHISKEY PARK 8950 26.0 16.4 159 23.7 16.8 141 ----- ----- Basin wide percent of average 159 140 UPPER GREEN RIVER BIG SANDY OPENING 9100 14.3 8.3 172 13.1 10.5 125 BLIND BULL SUM 8650 28.3 16.7 169 20.5 14.5 141 EAST RIM DIVIDE 7930 11.7 8.0 146 12.5 9.7 129 ELKHART PARK G.S. 9400 14.2 7.8 182 14.1 10.3 137 GROS VENTRE SUMMIT 8775 15.3 9.3 165 13.1 10.2 128 KENDALL R.S. 7740 16.9 8.6 197 17.7 9.9 179 LOOMIS PARK 8240 17.1 10.0 171 17.8 12.1 147 NEW FORK LAKE 8340 11.1 6.7 166 10.4 9.3 112 SNIDER BASIN 8250 15.9 8.5 187 14.1 9.7 145 SPRING CREEK DIVIDE 9000 26.3 15.7 168 20.1 17.0 118 TRIPLE PEAK 8500 24.5 15.0 163 26.1 20.0 131 ----- ----- Basin wide percent of average 171 135 LOWER GREEN RIVER HAMS FORK 7840 12.3 6.8 181 11.2 8.6 130 HEWINTA 9500 9.0 5.4 167 9.6 7.6 126 HICKERSON PARK 9150 5.2 3.1 168 6.6 5.5 120 HOLE-IN-ROCK 9150 5.9 2.8 211 6.8 5.5 124 INDIAN CREEK 9425 28.2 15.7 180 19.9 16.1 124 KELLEY R.S. 8180 17.9 9.2 195 21.3 12.0 178 STEEL CREEK PARK 10100 11.0 8.9 124 10.9 7.9 138 ----- ----- Basin wide percent of average 172 137 UPPER BEAR RIVER BUG LAKE 7950 21.6 11.5 188 21.8 11.5 190 HAYDEN FORK 9400 13.9 9.1 153 18.2 10.7 170 KELLEY R.S. 8180 17.9 9.2 195 21.3 12.0 178 LILY LAKE 9050 12.6 7.5 168 13.9 8.6 162 MONTE CRISTO 8960 28.4 15.2 187 23.8 14.9 160 SALT RIVER SUMMIT 7600 15.2 7.6 200 16.8 10.8 156 TRIAL LAKE 9960 24.5 14.2 173 -M 13.6 * ----- ----- Basin wide percent of average 180 169 ----------------------------------------------------------------------------- -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.