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: FEBRUARY 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 25.9 14.7 176 27.5 18.9 146 COTTONWOOD CREEK 7600 25.9 17.2 151 27.3 20.7 132 GRANITE CREEK 6770 26.4 14.4 183 22.3 19.8 113 GRASSY LAKE 7265 40.0 29.7 135 38.6 30.5 127 GROS VENTRE SUMMIT 8775 18.9 12.1 156 17.8 13.4 133 LEWIS LAKE DIVIDE 7860 47.5 27.5 173 -M 31.0 * PHILLIPS BENCH 8200 35.4 22.8 155 39.0 24.6 159 SALT RIVER SUMMIT 7600 19.6 11.1 177 21.1 14.2 149 SNAKE RIVER STATION 6920 25.1 15.1 166 32.1 21.5 149 SPRING CREEK DIVIDE 9000 32.0 21.6 148 -M 22.6 * THUMB DIVIDE 7980 27.9 13.4 208 -M 17.7 * TOGWOTEE PASS 9580 29.7 19.6 152 -M 23.2 * TWO OCEAN PLATEAU 9360 38.3 21.0 182 -M 26.0 * WILLOW CREEK 8450 32.8 24.5 134 36.1 26.7 135 ----- ----- Basin wide percent of average 161 138 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 30.7 18.7 164 -M 14.1 * BLACK BEAR 7950 -M 29.5 * -M 31.4 * CANYON 7940 20.9 9.9 211 23.2 11.4 204 FISHER CREEK 9100 48.3 28.4 170 -M 28.7 * MADISON PLATEAU 7750 35.3 19.3 183 34.7 20.4 170 NORTHEAST ENTRANCE 7350 11.0 7.6 145 17.2 9.6 179 PARKER PEAK 9400 27.3 16.8 162 -M 12.3 * SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 * THUMB DIVIDE 7980 27.9 13.4 208 -M 17.7 * TWO OCEAN PLATEAU 9360 38.3 21.0 182 -M 26.0 * WHISKEY CREEK 6800 22.0 13.4 164 -M 16.8 * WHITE MILL 8700 33.2 20.0 166 -M 22.4 * WOLVERINE 7650 13.8 9.5 145 13.4 10.3 130 ----- ----- Basin wide percent of average 172 171* WIND RIVER BURROUGHS CREEK 8750 20.9 12.3 170 -M 13.1 * CHRISTINA LAKE 9980 17.7 11.9 149 19.5 12.5 156 COLD SPRINGS 9630 8.8 6.6 133 9.7 7.9 123 HOBBS PARK 10100 14.4 11.4 126 11.3 10.6 107 LITTLE WARM 9620 14.6 8.6 170 16.2 10.2 159 SOUTH PASS 9040 23.0 13.2 174 21.7 12.8 170 ST. LAWRENCE ALT 8620 7.5 5.8 129 9.2 7.5 123 TOGWOTEE PASS 9580 29.7 19.6 152 -M 23.2 * TOWNSEND CREEK 8700 8.6 7.4 116 9.7 9.2 105 ----- ----- Basin wide percent of average 150 138 BIGHORN BASIN BALD MTN. 9375 18.1 16.0 113 14.9 13.3 112 BEAR TRAP MEADOW 7900 6.6 5.6 118 6.9 6.0 115 BLACKWATER 9780 32.2 16.7 193 24.1 14.2 170 BONE SPRINGS DIV 9350 15.4 12.5 123 13.8 11.0 125 EVENING STAR 9200 35.6 21.2 168 -M 17.8 * GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128 KIRWIN 9550 12.9 7.6 170 14.3 8.0 179 LOST CREEK 8080 12.0 9.8 122 12.2 8.8 139 MARQUETTE 8760 8.7 6.1 143 8.9 6.7 133 MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126 OWL CREEK 8975 6.3 3.4 185 5.2 4.5 116 POWDER RIVER PASS 9480 11.5 8.2 140 11.2 8.9 126 SHELL CREEK 9580 14.9 11.9 125 12.2 10.1 121 SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 * SYLVAN ROAD 8120 18.3 10.4 176 24.1 12.8 188 TIMBER CREEK 7950 5.6 4.5 124 6.1 4.8 127 YOUNTS PEAK 8350 20.1 14.0 144 -M 13.1 * ----- ----- Basin wide percent of average 148 139 SHOSHONE RIVER BLACKWATER 9780 32.2 16.7 193 24.1 14.2 170 EVENING STAR 9200 35.6 21.2 168 -M 17.8 * KIRWIN 9550 12.9 7.6 170 14.3 8.0 179 MARQUETTE 8760 8.7 6.1 143 8.9 6.7 133 SYLVAN LAKE 8420 27.3 17.4 157 -M 15.3 * SYLVAN ROAD 8120 18.3 10.4 176 24.1 12.8 188 YOUNTS PEAK 8350 20.1 14.0 144 -M 13.1 * ----- ----- Basin wide percent of average 166 171 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.6 5.6 118 6.9 6.0 115 BONE SPRINGS DIV 9350 15.4 12.5 123 13.8 11.0 125 BURGESS JUNCTION 7880 10.3 9.0 114 10.4 8.1 128 CLOUD PEAK RESERVOIR 9860 14.6 10.1 145 12.0 9.6 125 DOME LAKE 8880 10.2 10.5 97 11.4 9.9 115 GRAVE SPRINGS 8550 9.5 -M * 9.1 7.1 128 HANSEN SAWMILL 8760 5.8 5.4 107 6.1 5.7 107 LOST CREEK 8080 12.0 9.8 122 12.2 8.8 139 MIDDLE POWDER 7760 12.2 9.1 134 11.1 8.8 126 POWDER RIVER PASS 9480 11.5 8.2 140 11.2 8.9 126 SUCKER CREEK 8880 11.7 9.1 129 11.7 9.9 118 TIE CREEK 6870 7.0 -M * 9.5 7.8 122 ----- ----- Basin wide percent of average 124 123 BELLE FOURCHE BLIND PARK 6890 9.3 8.5 109 13.4 7.1 189 NORTH RAPID CREEK 6130 9.9 -M * 11.9 -M * WARREN PEAK 6520 15.6 8.5 184 -M 5.9 * ----- ----- Basin wide percent of average 146 189* UPPER N. PLATTE RIVER COLUMBINE 9400 27.2 19.3 141 26.7 19.2 139 DIVIDE PEAK 8800 21.2 15.7 135 20.9 17.9 117 ELK RIVER 8700 24.9 15.5 161 22.6 14.5 156 JOE WRIGHT 10120 20.1 16.4 123 25.0 19.0 132 NORTH FRENCH CREEK 10100 30.7 19.0 162 25.4 17.7 144 OLD BATTLE 10000 33.9 24.4 139 28.4 22.9 124 SOUTH BRUSH CREEK 8400 13.6 8.6 158 15.4 12.2 126 TOWER 10500 49.1 35.0 140 36.2 28.1 129 WEBBER SPRINGS 9200 27.5 20.8 132 31.4 19.4 162 WILLOW CREEK PASS 9540 15.5 8.6 180 12.6 9.2 137 ----- ----- Basin wide percent of average 144 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 29.5 18.6 159 23.0 14.4 160 CASPER MTN. 7900 16.9 11.3 150 16.0 10.1 158 CHRISTINA LAKE 9980 17.7 11.9 149 19.5 12.5 156 DEADMAN HILL 10220 13.5 12.8 105 15.0 12.1 124 LAPRELE CREEK 8320 12.9 7.8 165 12.2 8.6 142 RENO HILL 8400 18.3 10.0 183 15.7 13.6 115 ROACH 9700 18.8 13.0 145 19.3 16.3 118 SAND LAKE 10080 31.3 25.1 125 24.8 15.4 161 SOUTH PASS 9040 23.0 13.2 174 21.7 12.8 170 WINDY PEAK 7840 8.8 5.6 157 10.2 6.7 152 ----- ----- Basin wide percent of average 147 145 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.3 9.0 170 16.1 12.1 133 DIVIDE PEAK 8800 21.2 15.7 135 20.9 17.9 117 OLD BATTLE 10000 33.9 24.4 139 28.4 22.9 124 SANDSTONE RS 8150 18.0 11.3 159 19.9 14.7 135 WHISKEY PARK 8950 33.7 21.9 154 29.0 21.7 134 ----- ----- Basin wide percent of average 148 128 UPPER GREEN RIVER BIG SANDY OPENING 9100 16.9 11.2 151 15.4 13.7 112 BLIND BULL SUM 8650 36.3 22.7 160 -M 19.7 * EAST RIM DIVIDE 7930 14.8 11.1 133 15.2 12.8 119 ELKHART PARK G.S. 9400 16.3 10.8 151 16.4 13.5 121 GROS VENTRE SUMMIT 8775 18.9 12.1 156 17.8 13.4 133 KENDALL R.S. 7740 21.1 11.7 180 17.5 13.1 134 LOOMIS PARK 8240 -M 13.9 * 19.7 15.8 125 NEW FORK LAKE 8340 13.2 9.3 142 12.0 12.2 98 SNIDER BASIN 8250 20.8 11.8 176 17.7 12.8 138 SPRING CREEK DIVIDE 9000 32.0 21.6 148 -M 22.6 * TRIPLE PEAK 8500 30.8 20.4 151 32.7 26.2 125 ----- ----- Basin wide percent of average 155 123 LOWER GREEN RIVER HAMS FORK 7840 15.7 9.8 160 13.5 11.2 121 HEWINTA 9500 11.3 7.7 147 12.0 9.6 125 HICKERSON PARK 9150 6.7 4.6 146 7.5 6.8 110 HOLE-IN-ROCK 9150 6.9 4.1 168 7.9 6.8 116 INDIAN CREEK 9425 35.3 21.4 165 28.5 21.2 134 KELLEY R.S. 8180 21.6 13.2 164 24.4 15.8 154 STEEL CREEK PARK 10100 13.6 11.5 118 13.2 9.8 135 ----- ----- Basin wide percent of average 154 132 UPPER BEAR RIVER BUG LAKE 7950 28.7 15.6 184 26.5 14.9 178 HAYDEN FORK 9400 18.0 12.6 143 22.5 14.1 160 KELLEY R.S. 8180 21.6 13.2 164 24.4 15.8 154 LILY LAKE 9050 15.2 9.9 154 16.9 11.0 154 MONTE CRISTO 8960 36.9 21.2 174 30.0 19.4 155 SALT RIVER SUMMIT 7600 19.6 11.1 177 21.1 14.2 149 TRIAL LAKE 9960 32.8 19.3 170 31.8 18.3 174 ----- ----- Basin wide percent of average 168 161 ----------------------------------------------------------------------------- -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.