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 SATURDAY: APRIL 5 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 29.7 17.3 172 35.1 23.1 152 COTTONWOOD CREEK 7600 31.3 24.2 129 33.0 26.0 127 GRANITE CREEK 6770 29.2 18.5 158 33.2 24.4 136 GRASSY LAKE 7265 47.1 36.7 128 53.1 38.6 138 GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.8 16.5 132 LEWIS LAKE DIVIDE 7860 52.2 36.0 145 45.8 39.2 117 PHILLIPS BENCH 8200 43.5 29.8 146 46.2 31.0 149 SALT RIVER SUMMIT 7600 21.8 14.3 152 23.7 17.6 135 SNAKE RIVER STATION 6920 28.3 18.7 151 36.8 27.1 136 SPRING CREEK DIVIDE 9000 36.1 28.6 126 32.9 28.5 115 THUMB DIVIDE 7980 32.3 17.3 187 33.6 21.6 156 TOGWOTEE PASS 9580 35.2 25.7 137 34.2 29.4 116 TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 31.8 * WILLOW CREEK 8450 40.2 30.8 131 43.7 33.3 131 ----- ----- Basin wide percent of average 146 133 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 35.7 24.3 147 30.6 18.6 165 BLACK BEAR 7950 -M 39.0 * -M 42.0 * CANYON 7940 23.3 13.2 177 26.4 14.7 180 FISHER CREEK 9100 56.0 36.6 153 -M 37.8 * MADISON PLATEAU 7750 42.3 25.0 169 42.3 27.1 156 NORTHEAST ENTRANCE 7350 12.1 9.1 133 19.5 12.2 160 PARKER PEAK 9400 32.1 22.2 145 -M 16.0 * SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170 THUMB DIVIDE 7980 32.3 17.3 187 33.6 21.6 156 TWO OCEAN PLATEAU 9360 45.6 26.7 171 -M 31.8 * WHISKEY CREEK 6800 25.7 17.7 145 32.0 22.6 142 WHITE MILL 8700 38.3 25.3 151 -M 29.2 * WOLVERINE 7650 13.9 11.7 119 15.6 13.1 119 ----- ----- Basin wide percent of average 155 156 WIND RIVER BURROUGHS CREEK 8750 24.1 15.1 160 26.1 17.1 153 CHRISTINA LAKE 9980 20.6 15.8 130 23.5 17.2 137 COLD SPRINGS 9630 10.5 8.5 124 12.8 10.9 117 HOBBS PARK 10100 18.4 15.5 119 14.6 14.6 100 LITTLE WARM 9620 18.1 12.1 150 20.7 13.7 151 SOUTH PASS 9040 25.2 16.7 151 25.7 17.6 146 ST. LAWRENCE ALT 8620 9.1 7.5 121 11.6 10.5 110 TOGWOTEE PASS 9580 35.2 25.7 137 34.2 29.4 116 TOWNSEND CREEK 8700 10.8 10.0 108 13.0 12.9 101 ----- ----- Basin wide percent of average 136 127 BIGHORN BASIN BALD MTN. 9375 22.7 21.0 108 19.0 17.9 106 BEAR TRAP MEADOW 7900 6.8 7.1 96 9.0 8.5 106 BLACKWATER 9780 38.5 23.1 167 29.0 18.4 158 BONE SPRINGS DIV 9350 19.9 17.0 117 17.1 15.5 110 EVENING STAR 9200 41.6 27.8 150 40.4 23.1 175 GRAVE SPRINGS 8550 12.9 -M * 11.6 10.0 116 KIRWIN 9550 15.0 10.3 146 16.2 11.1 146 LOST CREEK 8080 16.5 14.1 117 16.3 12.2 134 MARQUETTE 8760 11.8 8.3 142 11.9 10.0 119 MIDDLE POWDER 7760 18.0 12.6 143 15.3 12.2 125 OWL CREEK 8975 8.4 4.6 183 6.8 6.5 105 POWDER RIVER PASS 9480 -M 11.1 * 13.8 11.9 116 SHELL CREEK 9580 18.4 15.3 120 15.2 13.5 113 SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170 SYLVAN ROAD 8120 21.0 12.0 175 27.4 16.5 166 TIMBER CREEK 7950 7.3 6.4 114 8.6 7.4 116 YOUNTS PEAK 8350 24.5 17.6 139 27.6 17.0 162 ----- ----- Basin wide percent of average 138 138 SHOSHONE RIVER BLACKWATER 9780 38.5 23.1 167 29.0 18.4 158 EVENING STAR 9200 41.6 27.8 150 40.4 23.1 175 KIRWIN 9550 15.0 10.3 146 16.2 11.1 146 MARQUETTE 8760 11.8 8.3 142 11.9 10.0 119 SYLVAN LAKE 8420 32.8 22.8 144 33.4 19.7 170 SYLVAN ROAD 8120 21.0 12.0 175 27.4 16.5 166 YOUNTS PEAK 8350 24.5 17.6 139 27.6 17.0 162 ----- ----- Basin wide percent of average 152 161 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.8 7.1 96 9.0 8.5 106 BONE SPRINGS DIV 9350 19.9 17.0 117 17.1 15.5 110 BURGESS JUNCTION 7880 14.9 12.1 123 14.1 11.9 118 CLOUD PEAK RESERVOIR 9860 18.7 15.4 121 15.9 13.8 115 DOME LAKE 8880 14.4 14.1 102 15.3 13.6 113 GRAVE SPRINGS 8550 12.9 -M * 11.6 10.0 116 HANSEN SAWMILL 8760 7.3 7.2 101 9.0 8.2 110 LOST CREEK 8080 16.5 14.1 117 16.3 12.2 134 MIDDLE POWDER 7760 18.0 12.6 143 15.3 12.2 125 POWDER RIVER PASS 9480 -M 11.1 * 13.8 11.9 116 SUCKER CREEK 8880 15.8 12.5 126 16.3 13.6 120 TIE CREEK 6870 7.5 -M * 12.9 11.4 113 ----- ----- Basin wide percent of average 118 117 BELLE FOURCHE BLIND PARK 6890 9.6 11.2 86 15.2 10.5 145 NORTH RAPID CREEK 6130 9.8 -M * 13.3 -M * WARREN PEAK 6520 19.1 11.2 171 -M 8.3 * ----- ----- Basin wide percent of average 128 145* UPPER N. PLATTE RIVER COLUMBINE 9400 28.8 24.8 116 31.6 25.0 126 DIVIDE PEAK 8800 27.3 21.4 128 25.4 23.4 109 ELK RIVER 8700 26.9 20.1 134 25.2 19.6 129 JOE WRIGHT 10120 25.8 22.7 114 29.7 25.7 116 NORTH FRENCH CREEK 10100 35.9 26.3 137 27.6 24.1 115 OLD BATTLE 10000 41.5 33.2 125 39.0 30.9 126 SOUTH BRUSH CREEK 8400 13.5 13.3 102 17.9 16.9 106 TOWER 10500 55.1 46.4 119 47.8 37.1 129 WEBBER SPRINGS 9200 32.1 28.4 113 36.9 25.9 142 WILLOW CREEK PASS 9540 20.0 12.4 161 16.2 13.0 125 ----- ----- Basin wide percent of average 123 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 36.5 27.1 135 28.1 20.0 141 CASPER MTN. 7900 24.2 17.3 140 21.7 14.6 149 CHRISTINA LAKE 9980 20.6 15.8 130 23.5 17.2 137 DEADMAN HILL 10220 17.1 16.9 101 19.1 17.3 110 LAPRELE CREEK 8320 15.3 10.4 147 15.1 12.2 124 RENO HILL 8400 24.5 14.7 167 21.3 19.6 109 ROACH 9700 23.2 17.6 132 22.7 21.7 105 SAND LAKE 10080 39.1 33.8 116 30.4 20.9 145 SOUTH PASS 9040 25.2 16.7 151 25.7 17.6 146 WINDY PEAK 7840 10.9 8.9 122 11.8 9.9 119 ----- ----- Basin wide percent of average 132 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.1 11.2 126 28.7 15.7 183 DIVIDE PEAK 8800 27.3 21.4 128 25.4 23.4 109 OLD BATTLE 10000 41.5 33.2 125 39.0 30.9 126 SANDSTONE RS 8150 17.9 15.1 119 22.3 19.2 116 WHISKEY PARK 8950 38.3 29.5 130 33.7 29.0 116 ----- ----- Basin wide percent of average 126 126 UPPER GREEN RIVER BIG SANDY OPENING 9100 18.9 14.9 127 20.2 16.9 120 BLIND BULL SUM 8650 43.4 30.1 144 32.7 24.9 131 EAST RIM DIVIDE 7930 17.1 14.3 120 17.4 15.7 111 ELKHART PARK G.S. 9400 18.3 14.2 129 18.6 16.6 112 GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.8 16.5 132 KENDALL R.S. 7740 23.8 14.2 168 23.8 16.1 148 LOOMIS PARK 8240 -M 17.4 * 27.7 19.6 141 NEW FORK LAKE 8340 15.4 11.1 139 13.5 15.0 90 SNIDER BASIN 8250 23.8 15.1 158 19.4 15.7 124 SPRING CREEK DIVIDE 9000 36.1 28.6 126 32.9 28.5 115 TRIPLE PEAK 8500 36.6 26.2 140 37.9 32.1 118 ----- ----- Basin wide percent of average 139 122 LOWER GREEN RIVER HAMS FORK 7840 15.3 10.4 147 14.8 13.9 106 HEWINTA 9500 11.9 10.8 110 14.6 13.5 108 HICKERSON PARK 9150 10.3 6.8 151 10.5 9.9 106 HOLE-IN-ROCK 9150 7.5 6.4 117 10.8 9.9 109 INDIAN CREEK 9425 40.2 29.4 137 31.6 26.9 117 KELLEY R.S. 8180 24.3 17.4 140 26.3 19.5 135 STEEL CREEK PARK 10100 16.6 17.0 98 16.2 13.2 123 ----- ----- Basin wide percent of average 128 117 UPPER BEAR RIVER BUG LAKE 7950 33.9 20.9 162 29.5 20.0 148 HAYDEN FORK 9400 17.7 14.9 119 25.7 19.6 131 KELLEY R.S. 8180 24.3 17.4 140 26.3 19.5 135 LILY LAKE 9050 17.1 13.3 129 19.8 15.2 130 MONTE CRISTO 8960 38.7 29.7 130 33.6 26.3 128 SALT RIVER SUMMIT 7600 21.8 14.3 152 23.7 17.6 135 TRIAL LAKE 9960 34.5 25.3 136 34.8 24.6 141 ----- ----- Basin wide percent of average 138 135 ----------------------------------------------------------------------------- -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.