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: APRIL 4 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.0 17.4 172 35.0 23.0 152 COTTONWOOD CREEK 7600 31.8 24.2 131 33.0 26.0 127 GRANITE CREEK 6770 29.4 18.6 158 33.1 24.3 136 GRASSY LAKE 7265 47.4 36.6 130 53.1 38.5 138 GROS VENTRE SUMMIT 8775 23.1 15.8 146 21.6 16.5 131 LEWIS LAKE DIVIDE 7860 52.8 35.9 147 45.9 39.1 117 PHILLIPS BENCH 8200 43.4 29.7 146 46.2 30.9 150 SALT RIVER SUMMIT 7600 22.1 14.4 153 23.8 17.5 136 SNAKE RIVER STATION 6920 28.6 18.8 152 36.6 27.0 136 SPRING CREEK DIVIDE 9000 36.0 28.5 126 32.9 28.4 116 THUMB DIVIDE 7980 32.4 17.2 188 33.5 21.5 156 TOGWOTEE PASS 9580 35.1 25.6 137 34.0 29.3 116 TWO OCEAN PLATEAU 9360 45.5 26.8 170 -M 31.7 * WILLOW CREEK 8450 40.3 30.8 131 43.0 33.2 130 ----- ----- Basin wide percent of average 146 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 35.8 24.2 148 30.5 18.5 165 BLACK BEAR 7950 -M 38.9 * -M 41.8 * CANYON 7940 23.5 13.2 178 26.4 14.6 181 FISHER CREEK 9100 55.9 36.5 153 -M 37.6 * MADISON PLATEAU 7750 42.3 25.0 169 42.3 27.0 157 NORTHEAST ENTRANCE 7350 12.1 9.2 132 19.4 12.1 160 PARKER PEAK 9400 31.6 22.1 143 -M 16.0 * SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169 THUMB DIVIDE 7980 32.4 17.2 188 33.5 21.5 156 TWO OCEAN PLATEAU 9360 45.5 26.8 170 -M 31.7 * WHISKEY CREEK 6800 25.7 17.7 145 31.9 22.5 142 WHITE MILL 8700 38.4 25.3 152 -M 29.1 * WOLVERINE 7650 14.0 11.7 120 15.5 13.0 119 ----- ----- Basin wide percent of average 155 156 WIND RIVER BURROUGHS CREEK 8750 24.0 15.1 159 25.9 17.0 152 CHRISTINA LAKE 9980 20.4 15.7 130 23.1 17.1 135 COLD SPRINGS 9630 10.2 8.5 120 12.2 10.9 112 HOBBS PARK 10100 17.9 15.4 116 14.1 14.5 97 LITTLE WARM 9620 18.3 12.0 153 20.4 13.6 150 SOUTH PASS 9040 25.0 16.7 150 25.3 17.5 145 ST. LAWRENCE ALT 8620 8.8 7.5 117 10.9 10.4 105 TOGWOTEE PASS 9580 35.1 25.6 137 34.0 29.3 116 TOWNSEND CREEK 8700 10.4 10.0 104 12.7 12.8 99 ----- ----- Basin wide percent of average 134 125 BIGHORN BASIN BALD MTN. 9375 22.7 20.9 109 18.9 17.7 107 BEAR TRAP MEADOW 7900 6.7 7.1 94 8.9 8.4 106 BLACKWATER 9780 38.3 22.9 167 29.2 18.4 159 BONE SPRINGS DIV 9350 19.6 16.8 117 17.1 15.4 111 EVENING STAR 9200 41.8 27.6 151 39.9 23.0 173 GRAVE SPRINGS 8550 12.8 -M * 11.4 9.9 115 KIRWIN 9550 14.8 10.2 145 16.1 11.1 145 LOST CREEK 8080 15.8 14.0 113 15.9 12.1 131 MARQUETTE 8760 11.4 8.2 139 11.7 9.9 118 MIDDLE POWDER 7760 17.4 12.5 139 15.2 12.1 126 OWL CREEK 8975 8.4 4.6 183 7.0 6.4 109 POWDER RIVER PASS 9480 -M 11.1 * 13.6 11.8 115 SHELL CREEK 9580 18.3 15.3 120 15.1 13.4 113 SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169 SYLVAN ROAD 8120 20.6 12.1 170 26.9 16.4 164 TIMBER CREEK 7950 7.1 6.4 111 8.2 7.3 112 YOUNTS PEAK 8350 24.4 17.5 139 27.3 17.0 161 ----- ----- Basin wide percent of average 137 137 SHOSHONE RIVER BLACKWATER 9780 38.3 22.9 167 29.2 18.4 159 EVENING STAR 9200 41.8 27.6 151 39.9 23.0 173 KIRWIN 9550 14.8 10.2 145 16.1 11.1 145 MARQUETTE 8760 11.4 8.2 139 11.7 9.9 118 SYLVAN LAKE 8420 32.7 22.6 145 33.2 19.6 169 SYLVAN ROAD 8120 20.6 12.1 170 26.9 16.4 164 YOUNTS PEAK 8350 24.4 17.5 139 27.3 17.0 161 ----- ----- Basin wide percent of average 152 160 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.7 7.1 94 8.9 8.4 106 BONE SPRINGS DIV 9350 19.6 16.8 117 17.1 15.4 111 BURGESS JUNCTION 7880 14.4 12.0 120 14.1 11.8 119 CLOUD PEAK RESERVOIR 9860 18.4 15.3 120 15.5 13.7 113 DOME LAKE 8880 13.8 14.0 99 14.6 13.5 108 GRAVE SPRINGS 8550 12.8 -M * 11.4 9.9 115 HANSEN SAWMILL 8760 7.4 7.2 103 8.9 8.1 110 LOST CREEK 8080 15.8 14.0 113 15.9 12.1 131 MIDDLE POWDER 7760 17.4 12.5 139 15.2 12.1 126 POWDER RIVER PASS 9480 -M 11.1 * 13.6 11.8 115 SUCKER CREEK 8880 15.0 12.4 121 16.0 13.4 119 TIE CREEK 6870 7.3 -M * 12.6 11.3 112 ----- ----- Basin wide percent of average 115 116 BELLE FOURCHE BLIND PARK 6890 9.1 11.2 81 14.7 10.4 141 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 17.8 11.2 159 -M 8.2 * ----- ----- Basin wide percent of average 120 141* UPPER N. PLATTE RIVER COLUMBINE 9400 28.5 24.8 115 31.4 24.9 126 DIVIDE PEAK 8800 26.7 21.4 125 25.4 23.3 109 ELK RIVER 8700 26.9 20.1 134 25.1 19.5 129 JOE WRIGHT 10120 25.1 22.6 111 29.3 25.5 115 NORTH FRENCH CREEK 10100 35.9 26.2 137 27.6 24.0 115 OLD BATTLE 10000 41.1 33.0 125 38.9 30.8 126 SOUTH BRUSH CREEK 8400 13.5 13.3 102 17.8 16.7 107 TOWER 10500 54.6 46.2 118 47.7 36.9 129 WEBBER SPRINGS 9200 31.8 28.4 112 36.6 25.7 142 WILLOW CREEK PASS 9540 18.8 12.3 153 15.5 12.9 120 ----- ----- Basin wide percent of average 122 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 36.2 27.0 134 28.0 19.8 141 CASPER MTN. 7900 22.1 17.1 129 20.8 14.5 143 CHRISTINA LAKE 9980 20.4 15.7 130 23.1 17.1 135 DEADMAN HILL 10220 16.8 16.9 99 18.8 17.1 110 LAPRELE CREEK 8320 15.1 10.5 144 15.0 12.1 124 RENO HILL 8400 23.4 14.6 160 20.5 19.5 105 ROACH 9700 22.7 17.6 129 22.0 21.6 102 SAND LAKE 10080 38.5 33.7 114 30.1 20.8 145 SOUTH PASS 9040 25.0 16.7 150 25.3 17.5 145 WINDY PEAK 7840 10.6 8.9 119 11.9 9.8 121 ----- ----- Basin wide percent of average 129 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.1 11.2 126 28.7 15.6 184 DIVIDE PEAK 8800 26.7 21.4 125 25.4 23.3 109 OLD BATTLE 10000 41.1 33.0 125 38.9 30.8 126 SANDSTONE RS 8150 17.9 15.1 119 22.4 19.0 118 WHISKEY PARK 8950 37.9 29.4 129 33.6 28.8 117 ----- ----- Basin wide percent of average 125 127 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.8 14.8 134 18.4 16.8 110 BLIND BULL SUM 8650 43.6 30.1 145 32.9 24.8 133 EAST RIM DIVIDE 7930 16.9 14.2 119 17.3 15.7 110 ELKHART PARK G.S. 9400 18.2 14.1 129 18.6 16.5 113 GROS VENTRE SUMMIT 8775 23.1 15.8 146 21.6 16.5 131 KENDALL R.S. 7740 23.7 14.4 165 24.0 16.1 149 LOOMIS PARK 8240 -M 17.5 * 27.5 19.5 141 NEW FORK LAKE 8340 15.4 11.2 138 13.5 15.0 90 SNIDER BASIN 8250 23.6 15.0 157 19.5 15.7 124 SPRING CREEK DIVIDE 9000 36.0 28.5 126 32.9 28.4 116 TRIPLE PEAK 8500 36.9 26.1 141 38.0 32.0 119 ----- ----- Basin wide percent of average 140 122 LOWER GREEN RIVER HAMS FORK 7840 15.8 10.9 145 14.9 13.8 108 HEWINTA 9500 12.1 11.0 110 14.5 13.4 108 HICKERSON PARK 9150 9.4 6.8 138 9.8 9.8 100 HOLE-IN-ROCK 9150 7.0 6.4 109 10.4 9.8 106 INDIAN CREEK 9425 41.2 29.3 141 31.9 26.9 119 KELLEY R.S. 8180 24.7 17.4 142 26.4 19.4 136 STEEL CREEK PARK 10100 16.7 16.9 99 16.2 13.1 124 ----- ----- Basin wide percent of average 129 117 UPPER BEAR RIVER BUG LAKE 7950 33.6 21.0 160 29.7 19.9 149 HAYDEN FORK 9400 18.0 15.3 118 25.6 19.5 131 KELLEY R.S. 8180 24.7 17.4 142 26.4 19.4 136 LILY LAKE 9050 16.9 13.3 127 19.7 15.1 130 MONTE CRISTO 8960 38.3 29.8 129 33.7 26.2 129 SALT RIVER SUMMIT 7600 22.1 14.4 153 23.8 17.5 136 TRIAL LAKE 9960 34.8 25.2 138 34.7 24.4 142 ----- ----- Basin wide percent of average 138 136 ----------------------------------------------------------------------------- -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.