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 SUNDAY: APRIL 13 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.8 16.3 189 35.5 23.8 149 COTTONWOOD CREEK 7600 31.9 23.5 136 33.8 26.7 127 GRANITE CREEK 6770 29.3 17.9 164 33.4 25.1 133 GRASSY LAKE 7265 48.2 37.6 128 53.1 39.6 134 GROS VENTRE SUMMIT 8775 23.6 16.0 148 21.8 17.0 128 LEWIS LAKE DIVIDE 7860 52.1 36.6 142 45.7 40.3 113 PHILLIPS BENCH 8200 43.9 30.7 143 46.4 31.8 146 SALT RIVER SUMMIT 7600 22.4 13.9 161 24.5 18.1 135 SNAKE RIVER STATION 6920 29.0 18.6 156 37.1 27.8 133 SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.2 115 THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.2 152 TOGWOTEE PASS 9580 35.5 26.7 133 34.6 30.2 115 TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.7 * WILLOW CREEK 8450 41.3 31.5 131 45.4 34.2 133 ----- ----- Basin wide percent of average 147 131 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.3 25.3 143 31.1 19.4 160 BLACK BEAR 7950 -M 40.0 * -M 43.4 * CANYON 7940 23.9 13.4 178 26.9 15.2 177 FISHER CREEK 9100 56.4 37.6 150 -M 39.1 * MADISON PLATEAU 7750 42.7 25.5 167 42.9 28.0 153 NORTHEAST ENTRANCE 7350 12.8 9.0 142 19.5 12.7 154 PARKER PEAK 9400 32.8 23.0 143 -M 16.7 * SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164 THUMB DIVIDE 7980 32.3 17.4 186 33.8 22.2 152 TWO OCEAN PLATEAU 9360 46.3 26.6 174 -M 32.7 * WHISKEY CREEK 6800 25.3 18.1 140 32.2 23.3 138 WHITE MILL 8700 38.7 25.7 151 -M 30.3 * WOLVERINE 7650 12.9 11.8 109 16.4 13.8 119 ----- ----- Basin wide percent of average 153 152 WIND RIVER BURROUGHS CREEK 8750 24.3 15.3 159 26.6 17.8 149 CHRISTINA LAKE 9980 20.8 16.5 126 24.0 18.1 133 COLD SPRINGS 9630 10.7 8.7 123 13.4 11.6 116 HOBBS PARK 10100 19.0 16.3 117 15.5 15.4 101 LITTLE WARM 9620 18.7 13.2 142 21.1 14.5 146 SOUTH PASS 9040 26.4 17.4 152 26.1 18.5 141 ST. LAWRENCE ALT 8620 10.0 7.2 139 12.4 11.1 112 TOGWOTEE PASS 9580 35.5 26.7 133 34.6 30.2 115 TOWNSEND CREEK 8700 11.2 10.3 109 13.6 13.7 99 ----- ----- Basin wide percent of average 134 124 BIGHORN BASIN BALD MTN. 9375 23.7 22.0 108 20.1 18.8 107 BEAR TRAP MEADOW 7900 6.6 6.9 96 9.8 9.2 107 BLACKWATER 9780 39.4 24.4 161 30.1 19.1 158 BONE SPRINGS DIV 9350 20.2 17.9 113 18.5 16.3 113 EVENING STAR 9200 42.7 28.9 148 41.1 24.0 171 GRAVE SPRINGS 8550 13.2 -M * 12.6 10.7 118 KIRWIN 9550 15.5 10.9 142 17.1 11.8 145 LOST CREEK 8080 18.5 15.0 123 17.4 13.1 133 MARQUETTE 8760 13.0 8.6 151 13.1 11.1 118 MIDDLE POWDER 7760 19.1 13.4 143 16.1 13.0 124 OWL CREEK 8975 9.0 4.7 191 7.2 7.0 103 POWDER RIVER PASS 9480 -M 11.5 * 14.6 12.8 114 SHELL CREEK 9580 19.2 16.0 120 16.2 14.2 114 SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164 SYLVAN ROAD 8120 21.2 11.0 193 27.6 17.2 160 TIMBER CREEK 7950 7.7 6.6 117 9.1 8.2 111 YOUNTS PEAK 8350 24.9 18.2 137 28.5 17.7 161 ----- ----- Basin wide percent of average 137 136 SHOSHONE RIVER BLACKWATER 9780 39.4 24.4 161 30.1 19.1 158 EVENING STAR 9200 42.7 28.9 148 41.1 24.0 171 KIRWIN 9550 15.5 10.9 142 17.1 11.8 145 MARQUETTE 8760 13.0 8.6 151 13.1 11.1 118 SYLVAN LAKE 8420 32.2 23.7 136 33.6 20.5 164 SYLVAN ROAD 8120 21.2 11.0 193 27.6 17.2 160 YOUNTS PEAK 8350 24.9 18.2 137 28.5 17.7 161 ----- ----- Basin wide percent of average 150 157 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.6 6.9 96 9.8 9.2 107 BONE SPRINGS DIV 9350 20.2 17.9 113 18.5 16.3 113 BURGESS JUNCTION 7880 15.8 12.7 124 15.3 12.7 120 CLOUD PEAK RESERVOIR 9860 19.7 16.5 119 16.9 14.8 114 DOME LAKE 8880 14.4 14.7 98 16.5 14.5 114 GRAVE SPRINGS 8550 13.2 -M * 12.6 10.7 118 HANSEN SAWMILL 8760 6.8 7.5 91 9.3 8.9 104 LOST CREEK 8080 18.5 15.0 123 17.4 13.1 133 MIDDLE POWDER 7760 19.1 13.4 143 16.1 13.0 124 POWDER RIVER PASS 9480 -M 11.5 * 14.6 12.8 114 SUCKER CREEK 8880 17.5 13.1 134 17.7 14.5 122 TIE CREEK 6870 7.5 -M * 14.2 12.1 117 ----- ----- Basin wide percent of average 118 117 BELLE FOURCHE BLIND PARK 6890 11.3 11.5 98 16.9 11.5 147 NORTH RAPID CREEK 6130 12.0 -M * 15.0 -M * WARREN PEAK 6520 21.1 11.5 183 -M 8.9 * ----- ----- Basin wide percent of average 141 147* UPPER N. PLATTE RIVER COLUMBINE 9400 30.7 24.5 125 34.4 25.9 133 DIVIDE PEAK 8800 29.3 21.7 135 26.8 24.6 109 ELK RIVER 8700 29.5 20.3 145 27.1 20.4 133 JOE WRIGHT 10120 28.8 23.9 121 31.6 27.1 117 NORTH FRENCH CREEK 10100 37.0 27.8 133 -M 25.3 * OLD BATTLE 10000 43.9 35.3 124 40.7 32.4 126 SOUTH BRUSH CREEK 8400 13.9 13.1 106 19.1 18.0 106 TOWER 10500 58.1 48.5 120 48.3 39.0 124 WEBBER SPRINGS 9200 33.1 28.6 116 38.6 27.4 141 WILLOW CREEK PASS 9540 22.0 13.3 165 17.3 13.7 126 ----- ----- Basin wide percent of average 127 124 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 37.5 28.6 131 28.7 21.2 135 CASPER MTN. 7900 25.3 18.7 135 22.7 15.9 143 CHRISTINA LAKE 9980 20.8 16.5 126 24.0 18.1 133 DEADMAN HILL 10220 18.2 17.6 103 20.3 18.5 110 LAPRELE CREEK 8320 15.5 10.1 153 16.0 13.0 123 RENO HILL 8400 26.3 15.3 172 23.0 20.5 112 ROACH 9700 24.4 18.0 136 24.4 23.0 106 SAND LAKE 10080 40.7 35.3 115 31.5 22.1 143 SOUTH PASS 9040 26.4 17.4 152 26.1 18.5 141 WINDY PEAK 7840 11.1 9.2 121 12.6 10.6 119 ----- ----- Basin wide percent of average 132 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 16.8 11.0 153 28.9 16.6 174 DIVIDE PEAK 8800 29.3 21.7 135 26.8 24.6 109 OLD BATTLE 10000 43.9 35.3 124 40.7 32.4 126 SANDSTONE RS 8150 19.8 15.3 129 23.1 20.4 113 WHISKEY PARK 8950 41.1 30.5 135 33.7 30.5 110 ----- ----- Basin wide percent of average 133 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.8 15.3 129 17.6 17.4 101 BLIND BULL SUM 8650 44.2 30.8 144 33.8 25.5 133 EAST RIM DIVIDE 7930 17.4 14.9 117 17.6 16.2 109 ELKHART PARK G.S. 9400 18.6 14.8 126 19.4 17.1 113 GROS VENTRE SUMMIT 8775 23.6 16.0 148 21.8 17.0 128 KENDALL R.S. 7740 24.5 13.3 184 24.0 16.6 145 LOOMIS PARK 8240 -M 17.0 * 27.8 20.1 138 NEW FORK LAKE 8340 16.1 10.8 149 13.5 15.4 88 SNIDER BASIN 8250 23.9 15.4 155 19.8 16.2 122 SPRING CREEK DIVIDE 9000 37.6 29.2 129 33.6 29.2 115 TRIPLE PEAK 8500 36.6 26.8 137 38.3 33.0 116 ----- ----- Basin wide percent of average 140 119 LOWER GREEN RIVER HAMS FORK 7840 15.9 6.6 241 15.2 14.3 106 HEWINTA 9500 14.1 9.4 150 15.2 14.4 106 HICKERSON PARK 9150 12.6 6.6 191 11.2 10.6 106 HOLE-IN-ROCK 9150 11.8 6.2 190 11.7 10.6 110 INDIAN CREEK 9425 40.3 30.2 133 32.4 27.6 117 KELLEY R.S. 8180 25.1 17.6 143 26.1 20.0 131 STEEL CREEK PARK 10100 17.4 17.7 98 17.0 14.1 121 ----- ----- Basin wide percent of average 145 115 UPPER BEAR RIVER BUG LAKE 7950 34.4 20.2 170 30.2 20.8 145 HAYDEN FORK 9400 20.4 11.6 176 26.2 20.7 127 KELLEY R.S. 8180 25.1 17.6 143 26.1 20.0 131 LILY LAKE 9050 19.4 13.0 149 20.6 16.1 128 MONTE CRISTO 8960 42.4 29.4 144 34.1 27.5 124 SALT RIVER SUMMIT 7600 22.4 13.9 161 24.5 18.1 135 TRIAL LAKE 9960 36.5 25.9 141 35.5 25.7 138 ----- ----- Basin wide percent of average 152 132 ----------------------------------------------------------------------------- -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.