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 TUESDAY: APRIL 29 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.6 11.4 225 37.7 25.0 151 COTTONWOOD CREEK 7600 30.6 20.4 150 36.9 28.0 132 GRANITE CREEK 6770 24.7 13.5 183 34.7 26.6 130 GRASSY LAKE 7265 46.7 34.4 136 59.2 41.6 142 GROS VENTRE SUMMIT 8775 23.1 14.2 163 22.6 18.0 126 LEWIS LAKE DIVIDE 7860 54.1 34.7 156 62.3 42.3 147 PHILLIPS BENCH 8200 41.8 29.7 141 49.5 33.4 148 SALT RIVER SUMMIT 7600 19.8 11.2 177 25.7 19.1 135 SNAKE RIVER STATION 6920 22.0 16.7 132 39.5 29.2 135 SPRING CREEK DIVIDE 9000 38.7 29.6 131 35.9 30.6 117 THUMB DIVIDE 7980 29.2 15.4 190 36.2 23.4 155 TOGWOTEE PASS 9580 36.4 28.1 130 37.2 31.7 117 TWO OCEAN PLATEAU 9360 49.2 27.5 179 -M 34.5 * WILLOW CREEK 8450 41.5 31.9 130 49.3 36.0 137 ----- ----- Basin wide percent of average 152 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.9 * 33.6 21.0 160 BLACK BEAR 7950 -M 39.9 * -M 46.2 * CANYON 7940 21.2 11.2 189 -M 16.2 * FISHER CREEK 9100 59.5 38.6 154 -M 41.9 * MADISON PLATEAU 7750 42.2 24.0 176 44.8 29.7 151 NORTHEAST ENTRANCE 7350 8.4 6.3 133 21.7 13.8 157 PARKER PEAK 9400 35.4 23.6 150 -M 18.0 * SYLVAN LAKE 8420 31.7 23.8 133 35.9 22.1 162 THUMB DIVIDE 7980 29.2 15.4 190 36.2 23.4 155 TWO OCEAN PLATEAU 9360 49.2 27.5 179 -M 34.5 * WHISKEY CREEK 6800 22.4 15.6 144 33.8 24.7 137 WHITE MILL 8700 41.7 26.2 159 -M 32.3 * WOLVERINE 7650 12.0 8.6 140 17.5 15.0 117 ----- ----- Basin wide percent of average 160 149 WIND RIVER BURROUGHS CREEK 8750 23.6 13.2 179 28.0 19.2 146 CHRISTINA LAKE 9980 21.3 17.8 120 26.7 19.9 134 COLD SPRINGS 9630 8.5 7.0 121 16.0 12.9 124 HOBBS PARK 10100 21.4 17.8 120 17.9 17.1 105 LITTLE WARM 9620 19.1 10.8 177 23.3 16.1 145 SOUTH PASS 9040 27.3 18.0 152 28.7 20.4 141 ST. LAWRENCE ALT 8620 10.4 5.6 186 14.9 12.3 121 TOGWOTEE PASS 9580 36.4 28.1 130 37.2 31.7 117 TOWNSEND CREEK 8700 12.5 9.6 130 17.1 15.3 112 ----- ----- Basin wide percent of average 141 127 BIGHORN BASIN BALD MTN. 9375 24.9 23.9 104 21.1 20.6 102 BEAR TRAP MEADOW 7900 4.8 4.5 107 11.6 10.4 112 BLACKWATER 9780 42.0 25.6 164 32.7 20.4 160 BONE SPRINGS DIV 9350 20.2 18.4 110 19.6 17.9 109 EVENING STAR 9200 44.6 30.6 146 44.2 25.7 172 GRAVE SPRINGS 8550 12.6 -M * 13.6 12.2 111 KIRWIN 9550 16.9 11.6 146 18.5 13.1 141 LOST CREEK 8080 19.7 15.7 125 18.6 14.8 126 MARQUETTE 8760 13.5 8.6 157 14.5 13.2 110 MIDDLE POWDER 7760 17.9 14.7 122 17.3 14.6 118 OWL CREEK 8975 6.3 3.6 175 8.2 8.0 102 POWDER RIVER PASS 9480 -M 10.6 * 16.1 14.5 111 SHELL CREEK 9580 20.4 16.9 121 17.5 15.7 111 SYLVAN LAKE 8420 31.7 23.8 133 35.9 22.1 162 SYLVAN ROAD 8120 16.0 8.3 193 29.4 18.4 160 TIMBER CREEK 7950 6.9 6.1 113 10.3 9.8 105 YOUNTS PEAK 8350 24.2 18.3 132 -M 19.1 * ----- ----- Basin wide percent of average 134 131 SHOSHONE RIVER BLACKWATER 9780 42.0 25.6 164 32.7 20.4 160 EVENING STAR 9200 44.6 30.6 146 44.2 25.7 172 KIRWIN 9550 16.9 11.6 146 18.5 13.1 141 MARQUETTE 8760 13.5 8.6 157 14.5 13.2 110 SYLVAN LAKE 8420 31.7 23.8 133 35.9 22.1 162 SYLVAN ROAD 8120 16.0 8.3 193 29.4 18.4 160 YOUNTS PEAK 8350 24.2 18.3 132 -M 19.1 * ----- ----- Basin wide percent of average 149 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 4.8 4.5 107 11.6 10.4 112 BONE SPRINGS DIV 9350 20.2 18.4 110 19.6 17.9 109 BURGESS JUNCTION 7880 15.9 13.4 119 16.2 14.2 114 CLOUD PEAK RESERVOIR 9860 20.7 17.6 118 18.4 16.8 110 DOME LAKE 8880 15.2 15.0 101 17.2 16.2 106 GRAVE SPRINGS 8550 12.6 -M * 13.6 12.2 111 HANSEN SAWMILL 8760 5.5 7.0 79 10.3 10.1 102 LOST CREEK 8080 19.7 15.7 125 18.6 14.8 126 MIDDLE POWDER 7760 17.9 14.7 122 17.3 14.6 118 POWDER RIVER PASS 9480 -M 10.6 * 16.1 14.5 111 SUCKER CREEK 8880 17.6 13.7 128 18.9 16.3 116 TIE CREEK 6870 6.2 -M * 15.3 13.6 113 ----- ----- Basin wide percent of average 115 113 BELLE FOURCHE BLIND PARK 6890 6.3 9.8 64 17.9 13.5 133 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 20.0 9.8 204 -M 10.1 * ----- ----- Basin wide percent of average 134 133* UPPER N. PLATTE RIVER COLUMBINE 9400 27.8 22.4 124 36.1 27.9 129 DIVIDE PEAK 8800 26.5 19.6 135 27.9 27.0 103 ELK RIVER 8700 24.3 16.7 146 28.6 21.9 131 JOE WRIGHT 10120 33.4 24.6 136 35.0 29.9 117 NORTH FRENCH CREEK 10100 38.6 29.2 132 33.5 27.7 121 OLD BATTLE 10000 45.9 37.9 121 43.3 35.3 123 SOUTH BRUSH CREEK 8400 10.0 10.9 92 19.8 20.3 98 TOWER 10500 28.3 50.8 56 55.2 42.7 129 WEBBER SPRINGS 9200 32.6 26.3 124 39.9 30.2 132 WILLOW CREEK PASS 9540 23.4 13.5 173 19.0 15.2 125 ----- ----- Basin wide percent of average 115 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 40.7 28.9 141 32.7 23.5 139 CASPER MTN. 7900 23.8 18.0 132 24.2 18.5 131 CHRISTINA LAKE 9980 21.3 17.8 120 26.7 19.9 134 DEADMAN HILL 10220 22.3 18.9 118 22.9 20.8 110 LAPRELE CREEK 8320 11.7 6.8 172 16.4 14.5 113 RENO HILL 8400 23.1 13.7 169 23.9 22.2 108 ROACH 9700 26.0 18.1 144 26.0 25.5 102 SAND LAKE 10080 43.7 37.0 118 34.2 24.5 140 SOUTH PASS 9040 27.3 18.0 152 28.7 20.4 141 WINDY PEAK 7840 6.3 8.1 78 13.5 12.0 112 ----- ----- Basin wide percent of average 133 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.3 5.6 95 30.7 18.3 168 DIVIDE PEAK 8800 26.5 19.6 135 27.9 27.0 103 OLD BATTLE 10000 45.9 37.9 121 43.3 35.3 123 SANDSTONE RS 8150 12.2 10.5 116 24.3 22.7 107 WHISKEY PARK 8950 42.7 29.7 144 37.7 33.6 112 ----- ----- Basin wide percent of average 128 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 17.5 14.1 124 18.4 18.4 100 BLIND BULL SUM 8650 43.0 23.7 181 35.5 26.7 133 EAST RIM DIVIDE 7930 16.1 14.8 109 18.3 17.2 106 ELKHART PARK G.S. 9400 17.8 14.1 126 19.6 18.1 108 GROS VENTRE SUMMIT 8775 23.1 14.2 163 22.6 18.0 126 KENDALL R.S. 7740 18.7 10.9 172 24.6 17.5 141 LOOMIS PARK 8240 -M 15.3 * 28.9 21.3 136 NEW FORK LAKE 8340 11.7 9.3 126 14.1 16.3 87 SNIDER BASIN 8250 21.1 13.3 159 21.3 17.1 125 SPRING CREEK DIVIDE 9000 38.7 29.6 131 35.9 30.6 117 TRIPLE PEAK 8500 34.4 25.2 137 42.4 34.8 122 ----- ----- Basin wide percent of average 143 119 LOWER GREEN RIVER HAMS FORK 7840 12.5 5.7 219 18.2 15.1 121 HEWINTA 9500 8.2 5.8 141 16.2 16.1 101 HICKERSON PARK 9150 9.4 3.4 276 12.1 12.1 100 HOLE-IN-ROCK 9150 7.9 2.8 282 12.4 12.1 102 INDIAN CREEK 9425 42.6 29.1 146 35.3 29.0 122 KELLEY R.S. 8180 21.8 15.3 142 33.5 21.2 158 STEEL CREEK PARK 10100 19.4 18.8 103 18.7 15.9 118 ----- ----- Basin wide percent of average 151 120 UPPER BEAR RIVER BUG LAKE 7950 32.8 16.5 199 33.3 22.4 149 HAYDEN FORK 9400 14.0 7.1 197 28.3 22.7 125 KELLEY R.S. 8180 21.8 15.3 142 33.5 21.2 158 LILY LAKE 9050 14.5 9.2 158 22.2 17.8 125 MONTE CRISTO 8960 40.5 26.6 152 37.8 30.0 126 SALT RIVER SUMMIT 7600 19.8 11.2 177 25.7 19.1 135 TRIAL LAKE 9960 36.9 24.2 152 36.6 28.0 131 ----- ----- Basin wide percent of average 164 135 ----------------------------------------------------------------------------- -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.