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 27 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 27.0 12.0 225 37.7 24.9 151 COTTONWOOD CREEK 7600 31.5 20.8 151 36.4 27.9 130 GRANITE CREEK 6770 -M 14.1 * -M 26.4 * GRASSY LAKE 7265 46.9 34.9 134 58.5 41.4 141 GROS VENTRE SUMMIT 8775 23.3 14.4 162 22.5 17.9 126 LEWIS LAKE DIVIDE 7860 52.6 35.0 150 61.2 42.1 145 PHILLIPS BENCH 8200 41.6 29.9 139 49.3 33.2 148 SALT RIVER SUMMIT 7600 20.7 11.6 178 25.6 18.9 135 SNAKE RIVER STATION 6920 23.0 16.9 136 39.0 29.0 134 SPRING CREEK DIVIDE 9000 40.2 29.6 136 35.7 30.4 117 THUMB DIVIDE 7980 30.9 15.7 197 35.5 23.3 152 TOGWOTEE PASS 9580 36.4 28.0 130 37.0 31.5 117 TWO OCEAN PLATEAU 9360 -M 27.4 * -M 34.3 * WILLOW CREEK 8450 42.6 31.9 134 48.6 35.8 136 ----- ----- Basin wide percent of average 148 137 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.9 * 32.2 20.8 155 BLACK BEAR 7950 -M 39.9 * -M 45.8 * CANYON 7940 -M 11.6 * -M 16.0 * FISHER CREEK 9100 59.1 38.5 154 -M 41.5 * MADISON PLATEAU 7750 44.0 24.3 181 44.6 29.5 151 NORTHEAST ENTRANCE 7350 9.5 6.7 142 21.5 13.6 158 PARKER PEAK 9400 35.0 23.6 148 -M 17.9 * SYLVAN LAKE 8420 -M 23.8 * -M 21.9 * THUMB DIVIDE 7980 30.9 15.7 197 35.5 23.3 152 TWO OCEAN PLATEAU 9360 -M 27.4 * -M 34.3 * WHISKEY CREEK 6800 23.5 15.9 148 33.7 24.5 138 WHITE MILL 8700 -M 26.2 * -M 32.1 * WOLVERINE 7650 -M 9.0 * -M 14.9 * ----- ----- Basin wide percent of average 162* 150* WIND RIVER BURROUGHS CREEK 8750 24.5 13.5 181 27.9 19.0 147 CHRISTINA LAKE 9980 22.3 17.7 126 26.5 19.7 135 COLD SPRINGS 9630 7.8 7.3 107 16.0 12.8 125 HOBBS PARK 10100 22.0 17.6 125 17.9 16.9 106 LITTLE WARM 9620 19.4 11.2 173 23.2 15.9 146 SOUTH PASS 9040 27.9 18.0 155 28.7 20.1 143 ST. LAWRENCE ALT 8620 10.8 5.8 186 14.9 12.2 122 TOGWOTEE PASS 9580 36.4 28.0 130 37.0 31.5 117 TOWNSEND CREEK 8700 12.9 9.7 133 17.1 15.1 113 ----- ----- Basin wide percent of average 143 128 BIGHORN BASIN BALD MTN. 9375 25.0 23.7 105 21.0 20.3 103 BEAR TRAP MEADOW 7900 5.5 4.9 112 11.4 10.3 111 BLACKWATER 9780 41.7 25.4 164 32.4 20.3 160 BONE SPRINGS DIV 9350 20.8 18.3 114 19.6 17.7 111 EVENING STAR 9200 -M 30.4 * -M 25.5 * GRAVE SPRINGS 8550 12.9 -M * 13.4 12.0 112 KIRWIN 9550 16.9 11.6 146 18.4 13.0 142 LOST CREEK 8080 19.6 15.7 125 18.4 14.6 126 MARQUETTE 8760 13.7 8.6 159 14.5 13.0 112 MIDDLE POWDER 7760 18.8 14.5 130 17.1 14.4 119 OWL CREEK 8975 7.3 3.7 197 8.2 7.8 105 POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.3 110 SHELL CREEK 9580 20.2 16.8 120 17.2 15.5 111 SYLVAN LAKE 8420 -M 23.8 * -M 21.9 * SYLVAN ROAD 8120 17.0 8.6 198 28.8 18.3 157 TIMBER CREEK 7950 7.4 6.2 119 10.3 9.6 107 YOUNTS PEAK 8350 -M 18.3 * -M 19.0 * ----- ----- Basin wide percent of average 135 123 SHOSHONE RIVER BLACKWATER 9780 41.7 25.4 164 32.4 20.3 160 EVENING STAR 9200 -M 30.4 * -M 25.5 * KIRWIN 9550 16.9 11.6 146 18.4 13.0 142 MARQUETTE 8760 13.7 8.6 159 14.5 13.0 112 SYLVAN LAKE 8420 -M 23.8 * -M 21.9 * SYLVAN ROAD 8120 17.0 8.6 198 28.8 18.3 157 YOUNTS PEAK 8350 -M 18.3 * -M 19.0 * ----- ----- Basin wide percent of average 165 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 5.5 4.9 112 11.4 10.3 111 BONE SPRINGS DIV 9350 20.8 18.3 114 19.6 17.7 111 BURGESS JUNCTION 7880 16.2 13.4 121 16.1 14.0 115 CLOUD PEAK RESERVOIR 9860 20.8 17.5 119 18.3 16.6 110 DOME LAKE 8880 15.5 15.0 103 17.1 16.0 107 GRAVE SPRINGS 8550 12.9 -M * 13.4 12.0 112 HANSEN SAWMILL 8760 -M 7.1 * -M 10.0 * LOST CREEK 8080 19.6 15.7 125 18.4 14.6 126 MIDDLE POWDER 7760 18.8 14.5 130 17.1 14.4 119 POWDER RIVER PASS 9480 -M 10.8 * 15.7 14.3 110 SUCKER CREEK 8880 17.8 13.7 130 18.7 16.0 117 TIE CREEK 6870 6.8 -M * 15.2 13.4 113 ----- ----- Basin wide percent of average 119 114 BELLE FOURCHE BLIND PARK 6890 -M 10.1 * -M 13.3 * NORTH RAPID CREEK 6130 10.8 -M * 16.5 -M * WARREN PEAK 6520 -M 10.1 * -M 10.0 * ----- ----- Basin wide percent of average * * UPPER N. PLATTE RIVER COLUMBINE 9400 28.4 22.7 125 35.3 27.6 128 DIVIDE PEAK 8800 27.2 19.9 137 27.3 26.7 102 ELK RIVER 8700 27.2 17.2 158 28.4 21.7 131 JOE WRIGHT 10120 32.8 24.6 133 34.4 29.6 116 NORTH FRENCH CREEK 10100 38.7 29.1 133 32.9 27.4 120 OLD BATTLE 10000 44.9 37.6 119 42.0 35.0 120 SOUTH BRUSH CREEK 8400 11.2 11.2 100 19.5 20.0 98 TOWER 10500 59.4 50.6 117 54.7 42.3 129 WEBBER SPRINGS 9200 -M 26.7 * -M 29.9 * WILLOW CREEK PASS 9540 23.1 13.5 171 18.5 15.0 123 ----- ----- Basin wide percent of average 129 119 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 28.9 * -M 23.2 * CASPER MTN. 7900 -M 18.1 * -M 18.2 * CHRISTINA LAKE 9980 22.3 17.7 126 26.5 19.7 135 DEADMAN HILL 10220 22.2 18.8 118 22.5 20.5 110 LAPRELE CREEK 8320 12.8 7.2 178 16.3 14.3 114 RENO HILL 8400 24.3 13.9 175 23.8 22.0 108 ROACH 9700 25.9 18.1 143 25.5 25.2 101 SAND LAKE 10080 43.5 36.8 118 34.0 24.2 140 SOUTH PASS 9040 27.9 18.0 155 28.7 20.1 143 WINDY PEAK 7840 8.0 8.3 96 13.3 11.8 113 ----- ----- Basin wide percent of average 135 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.4 6.3 117 30.4 18.1 168 DIVIDE PEAK 8800 27.2 19.9 137 27.3 26.7 102 OLD BATTLE 10000 44.9 37.6 119 42.0 35.0 120 SANDSTONE RS 8150 14.1 11.2 126 23.5 22.4 105 WHISKEY PARK 8950 41.5 29.9 139 36.8 33.2 111 ----- ----- Basin wide percent of average 129 118 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.6 14.3 130 18.3 18.2 101 BLIND BULL SUM 8650 43.3 24.8 175 35.4 26.6 133 EAST RIM DIVIDE 7930 16.7 14.9 112 18.2 17.1 106 ELKHART PARK G.S. 9400 18.7 14.2 132 19.6 17.9 109 GROS VENTRE SUMMIT 8775 23.3 14.4 162 22.5 17.9 126 KENDALL R.S. 7740 19.6 11.2 175 24.5 17.4 141 LOOMIS PARK 8240 -M 15.6 * 28.6 21.1 136 NEW FORK LAKE 8340 -M 9.5 * -M 16.2 * SNIDER BASIN 8250 21.8 13.6 160 21.2 17.0 125 SPRING CREEK DIVIDE 9000 40.2 29.6 136 35.7 30.4 117 TRIPLE PEAK 8500 35.5 25.5 139 41.9 34.6 121 ----- ----- Basin wide percent of average 146 122 LOWER GREEN RIVER HAMS FORK 7840 13.4 5.7 235 17.8 15.0 119 HEWINTA 9500 9.5 6.2 153 16.1 15.9 101 HICKERSON PARK 9150 11.2 3.8 295 11.9 11.9 100 HOLE-IN-ROCK 9150 9.1 3.3 276 12.3 11.9 103 INDIAN CREEK 9425 43.7 29.3 149 35.0 28.9 121 KELLEY R.S. 8180 22.9 15.7 146 33.3 21.0 159 STEEL CREEK PARK 10100 18.8 18.6 101 18.4 15.7 117 ----- ----- Basin wide percent of average 156 120 UPPER BEAR RIVER BUG LAKE 7950 33.9 17.0 199 33.0 22.2 149 HAYDEN FORK 9400 15.3 7.7 199 27.6 22.5 123 KELLEY R.S. 8180 22.9 15.7 146 33.3 21.0 159 LILY LAKE 9050 16.0 9.8 163 21.8 17.6 124 MONTE CRISTO 8960 40.5 27.0 150 37.1 29.7 125 SALT RIVER SUMMIT 7600 20.7 11.6 178 25.6 18.9 135 TRIAL LAKE 9960 36.9 24.5 151 36.6 27.7 132 ----- ----- 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.