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 28 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 26.6 15.6 171 27.6 20.0 138 COTTONWOOD CREEK 7600 26.7 18.4 145 27.8 22.1 126 GRANITE CREEK 6770 26.9 15.3 176 22.3 21.0 106 GRASSY LAKE 7265 40.4 29.6 136 38.5 32.3 119 GROS VENTRE SUMMIT 8775 19.3 12.8 151 18.0 14.1 128 LEWIS LAKE DIVIDE 7860 48.0 29.3 164 -M 32.8 * PHILLIPS BENCH 8200 36.2 24.0 151 40.1 25.9 155 SALT RIVER SUMMIT 7600 19.9 12.0 166 21.4 15.0 143 SNAKE RIVER STATION 6920 25.6 16.1 159 32.6 22.7 144 SPRING CREEK DIVIDE 9000 32.1 23.1 139 -M 23.9 * THUMB DIVIDE 7980 28.6 14.2 201 -M 18.7 * TOGWOTEE PASS 9580 30.4 20.7 147 -M 24.5 * TWO OCEAN PLATEAU 9360 39.2 22.1 177 -M 27.5 * WILLOW CREEK 8450 33.5 25.7 130 36.8 28.4 130 ----- ----- Basin wide percent of average 155 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 31.4 19.8 159 -M 15.0 * BLACK BEAR 7950 -M 31.5 * -M 33.4 * CANYON 7940 21.4 10.6 202 23.2 12.0 193 FISHER CREEK 9100 49.2 30.1 163 -M 30.5 * MADISON PLATEAU 7750 36.5 20.5 178 34.7 21.6 161 NORTHEAST ENTRANCE 7350 11.3 8.0 141 17.4 10.1 172 PARKER PEAK 9400 28.1 17.9 157 -M 13.0 * SYLVAN LAKE 8420 27.9 18.4 152 -M 16.2 * THUMB DIVIDE 7980 28.6 14.2 201 -M 18.7 * TWO OCEAN PLATEAU 9360 39.2 22.1 177 -M 27.5 * WHISKEY CREEK 6800 22.5 14.4 156 -M 17.9 * WHITE MILL 8700 33.8 21.1 160 -M 23.6 * WOLVERINE 7650 14.5 10.0 145 13.9 10.9 128 ----- ----- Basin wide percent of average 166 163* WIND RIVER BURROUGHS CREEK 8750 21.6 13.0 166 -M 13.9 * CHRISTINA LAKE 9980 18.2 12.6 144 19.5 13.2 148 COLD SPRINGS 9630 9.0 7.0 129 10.0 8.3 120 HOBBS PARK 10100 15.0 12.0 125 11.7 11.1 105 LITTLE WARM 9620 14.9 9.1 164 16.5 10.7 154 SOUTH PASS 9040 23.7 13.9 171 22.2 13.7 162 ST. LAWRENCE ALT 8620 8.0 6.2 129 9.4 7.9 119 TOGWOTEE PASS 9580 30.4 20.7 147 -M 24.5 * TOWNSEND CREEK 8700 9.1 7.9 115 10.3 9.7 106 ----- ----- Basin wide percent of average 146 134 BIGHORN BASIN BALD MTN. 9375 19.3 16.9 114 16.0 14.0 114 BEAR TRAP MEADOW 7900 6.9 5.9 117 7.2 6.3 114 BLACKWATER 9780 32.7 17.9 183 24.8 15.1 164 BONE SPRINGS DIV 9350 15.9 13.3 120 14.2 11.6 122 EVENING STAR 9200 36.5 22.4 163 -M 18.9 * GRAVE SPRINGS 8550 9.9 -M * 9.4 7.4 127 KIRWIN 9550 13.2 8.0 165 14.6 8.5 172 LOST CREEK 8080 12.8 10.6 121 12.8 9.2 139 MARQUETTE 8760 9.5 6.5 146 9.5 7.1 134 MIDDLE POWDER 7760 12.5 9.6 130 11.6 9.2 126 OWL CREEK 8975 6.8 3.7 184 5.6 4.9 114 POWDER RIVER PASS 9480 12.0 8.7 138 11.4 9.3 123 SHELL CREEK 9580 15.4 12.5 123 12.6 10.5 120 SYLVAN LAKE 8420 27.9 18.4 152 -M 16.2 * SYLVAN ROAD 8120 18.7 11.1 168 24.5 13.5 181 TIMBER CREEK 7950 6.2 4.9 127 6.9 5.1 135 YOUNTS PEAK 8350 20.6 14.7 140 -M 13.8 * ----- ----- Basin wide percent of average 144 138 SHOSHONE RIVER BLACKWATER 9780 32.7 17.9 183 24.8 15.1 164 EVENING STAR 9200 36.5 22.4 163 -M 18.9 * KIRWIN 9550 13.2 8.0 165 14.6 8.5 172 MARQUETTE 8760 9.5 6.5 146 9.5 7.1 134 SYLVAN LAKE 8420 27.9 18.4 152 -M 16.2 * SYLVAN ROAD 8120 18.7 11.1 168 24.5 13.5 181 YOUNTS PEAK 8350 20.6 14.7 140 -M 13.8 * ----- ----- Basin wide percent of average 161 166 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.9 5.9 117 7.2 6.3 114 BONE SPRINGS DIV 9350 15.9 13.3 120 14.2 11.6 122 BURGESS JUNCTION 7880 10.7 9.6 111 10.7 8.5 126 CLOUD PEAK RESERVOIR 9860 15.3 11.0 139 12.6 10.2 124 DOME LAKE 8880 10.1 11.2 90 11.8 10.3 115 GRAVE SPRINGS 8550 9.9 -M * 9.4 7.4 127 HANSEN SAWMILL 8760 6.5 5.7 114 6.7 6.0 112 LOST CREEK 8080 12.8 10.6 121 12.8 9.2 139 MIDDLE POWDER 7760 12.5 9.6 130 11.6 9.2 126 POWDER RIVER PASS 9480 12.0 8.7 138 11.4 9.3 123 SUCKER CREEK 8880 12.1 9.6 126 12.1 10.4 116 TIE CREEK 6870 7.3 -M * 9.8 8.2 120 ----- ----- Basin wide percent of average 121 122 BELLE FOURCHE BLIND PARK 6890 9.7 9.0 108 13.6 7.5 181 NORTH RAPID CREEK 6130 9.7 -M * 12.1 -M * WARREN PEAK 6520 16.0 9.0 178 -M 6.2 * ----- ----- Basin wide percent of average 143 181* UPPER N. PLATTE RIVER COLUMBINE 9400 27.5 20.8 132 26.8 20.4 131 DIVIDE PEAK 8800 22.4 16.7 134 21.6 18.6 116 ELK RIVER 8700 25.9 16.6 156 22.6 15.4 147 JOE WRIGHT 10120 20.6 17.3 119 25.6 20.1 127 NORTH FRENCH CREEK 10100 31.5 20.2 156 25.7 18.8 137 OLD BATTLE 10000 33.9 26.0 130 32.3 24.3 133 SOUTH BRUSH CREEK 8400 13.5 9.3 145 15.7 12.8 123 TOWER 10500 50.0 37.0 135 36.3 29.8 122 WEBBER SPRINGS 9200 28.7 22.1 130 31.6 20.6 153 WILLOW CREEK PASS 9540 16.2 9.1 178 13.0 9.8 133 ----- ----- Basin wide percent of average 138 132 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 30.4 19.8 154 23.7 15.4 154 CASPER MTN. 7900 17.7 12.2 145 16.5 10.7 154 CHRISTINA LAKE 9980 18.2 12.6 144 19.5 13.2 148 DEADMAN HILL 10220 13.9 13.4 104 15.6 12.9 121 LAPRELE CREEK 8320 13.5 8.3 163 12.7 9.0 141 RENO HILL 8400 18.8 10.7 176 16.1 14.5 111 ROACH 9700 19.3 13.9 139 19.7 17.2 115 SAND LAKE 10080 32.1 26.6 121 25.2 16.4 154 SOUTH PASS 9040 23.7 13.9 171 22.2 13.7 162 WINDY PEAK 7840 9.2 6.1 151 10.5 7.1 148 ----- ----- Basin wide percent of average 143 140 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.4 9.8 157 16.7 12.5 134 DIVIDE PEAK 8800 22.4 16.7 134 21.6 18.6 116 OLD BATTLE 10000 33.9 26.0 130 32.3 24.3 133 SANDSTONE RS 8150 18.7 12.1 155 20.5 15.3 134 WHISKEY PARK 8950 34.4 23.4 147 29.9 22.4 133 ----- ----- Basin wide percent of average 142 130 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.3 12.0 144 15.9 14.4 110 BLIND BULL SUM 8650 36.9 24.1 153 -M 20.9 * EAST RIM DIVIDE 7930 15.1 11.9 127 15.5 13.5 115 ELKHART PARK G.S. 9400 16.5 11.3 146 16.5 14.2 116 GROS VENTRE SUMMIT 8775 19.3 12.8 151 18.0 14.1 128 KENDALL R.S. 7740 21.7 12.4 175 17.5 13.8 127 LOOMIS PARK 8240 -M 14.8 * 19.7 16.7 118 NEW FORK LAKE 8340 13.3 9.8 136 12.1 12.8 95 SNIDER BASIN 8250 20.8 12.7 164 17.8 13.5 132 SPRING CREEK DIVIDE 9000 32.1 23.1 139 -M 23.9 * TRIPLE PEAK 8500 31.5 21.6 146 32.8 27.7 118 ----- ----- Basin wide percent of average 148 118 LOWER GREEN RIVER HAMS FORK 7840 15.5 10.4 149 13.7 11.8 116 HEWINTA 9500 12.2 8.4 145 12.5 10.1 124 HICKERSON PARK 9150 6.5 5.0 130 7.8 7.2 108 HOLE-IN-ROCK 9150 7.2 4.5 160 8.6 7.2 119 INDIAN CREEK 9425 35.7 22.7 157 28.8 22.4 129 KELLEY R.S. 8180 21.9 14.1 155 24.4 16.7 146 STEEL CREEK PARK 10100 14.4 12.5 115 13.9 10.2 136 ----- ----- Basin wide percent of average 146 128 UPPER BEAR RIVER BUG LAKE 7950 29.6 16.8 176 26.9 15.8 170 HAYDEN FORK 9400 18.7 13.6 138 23.3 15.1 154 KELLEY R.S. 8180 21.9 14.1 155 24.4 16.7 146 LILY LAKE 9050 15.8 10.5 150 17.6 11.6 152 MONTE CRISTO 8960 38.2 23.2 165 30.5 20.6 148 SALT RIVER SUMMIT 7600 19.9 12.0 166 21.4 15.0 143 TRIAL LAKE 9960 33.9 21.0 161 32.1 19.5 165 ----- ----- Basin wide percent of average 160 154 ----------------------------------------------------------------------------- -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.