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 WEDNESDAY: APRIL 9 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.4 16.8 181 35.4 23.4 151 COTTONWOOD CREEK 7600 31.5 23.8 132 33.3 26.4 126 GRANITE CREEK 6770 29.4 18.2 162 33.3 24.7 135 GRASSY LAKE 7265 48.2 37.2 130 53.1 39.1 136 GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.8 16.8 130 LEWIS LAKE DIVIDE 7860 52.6 36.3 145 45.8 39.7 115 PHILLIPS BENCH 8200 43.8 30.3 145 46.3 31.4 147 SALT RIVER SUMMIT 7600 22.0 14.1 156 24.0 17.8 135 SNAKE RIVER STATION 6920 28.5 18.7 152 37.1 27.4 135 SPRING CREEK DIVIDE 9000 36.9 28.9 128 33.3 28.8 116 THUMB DIVIDE 7980 32.4 17.3 187 33.8 21.9 154 TOGWOTEE PASS 9580 35.3 26.2 135 34.5 29.8 116 TWO OCEAN PLATEAU 9360 46.5 26.7 174 -M 32.3 * WILLOW CREEK 8450 40.3 31.2 129 44.5 33.8 132 ----- ----- Basin wide percent of average 147 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.5 24.8 147 31.2 19.0 164 BLACK BEAR 7950 -M 39.5 * -M 42.7 * CANYON 7940 23.3 13.3 175 26.8 14.9 180 FISHER CREEK 9100 56.5 37.1 152 -M 38.5 * MADISON PLATEAU 7750 42.6 25.3 168 42.5 27.6 154 NORTHEAST ENTRANCE 7350 12.7 9.1 140 19.6 12.4 158 PARKER PEAK 9400 32.8 22.6 145 -M 16.4 * SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167 THUMB DIVIDE 7980 32.4 17.3 187 33.8 21.9 154 TWO OCEAN PLATEAU 9360 46.5 26.7 174 -M 32.3 * WHISKEY CREEK 6800 25.6 17.9 143 32.0 22.9 140 WHITE MILL 8700 38.8 25.5 152 -M 29.7 * WOLVERINE 7650 13.7 11.8 116 16.1 13.4 120 ----- ----- Basin wide percent of average 155 155 WIND RIVER BURROUGHS CREEK 8750 24.3 15.2 160 26.3 17.4 151 CHRISTINA LAKE 9980 20.9 16.1 130 24.0 17.7 136 COLD SPRINGS 9630 10.8 8.6 126 13.1 11.3 116 HOBBS PARK 10100 18.9 15.9 119 15.1 15.0 101 LITTLE WARM 9620 18.7 12.7 147 21.1 14.1 150 SOUTH PASS 9040 26.0 17.1 152 25.9 18.0 144 ST. LAWRENCE ALT 8620 9.6 7.3 132 12.1 10.8 112 TOGWOTEE PASS 9580 35.3 26.2 135 34.5 29.8 116 TOWNSEND CREEK 8700 11.1 10.2 109 13.4 13.3 101 ----- ----- Basin wide percent of average 136 126 BIGHORN BASIN BALD MTN. 9375 23.7 21.5 110 20.0 18.3 109 BEAR TRAP MEADOW 7900 7.3 7.0 104 9.5 8.8 108 BLACKWATER 9780 39.4 23.7 166 29.8 18.8 159 BONE SPRINGS DIV 9350 20.4 17.4 117 18.4 15.9 116 EVENING STAR 9200 42.7 28.3 151 41.0 23.6 174 GRAVE SPRINGS 8550 13.4 -M * 12.4 10.3 120 KIRWIN 9550 15.6 10.6 147 17.0 11.5 148 LOST CREEK 8080 17.9 14.6 123 17.2 12.7 135 MARQUETTE 8760 12.9 8.4 154 12.9 10.6 122 MIDDLE POWDER 7760 19.1 13.0 147 16.0 12.6 127 OWL CREEK 8975 9.1 4.7 194 7.0 6.7 104 POWDER RIVER PASS 9480 -M 11.3 * 14.3 12.4 115 SHELL CREEK 9580 19.1 15.7 122 16.0 13.8 116 SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167 SYLVAN ROAD 8120 21.2 11.5 184 27.5 16.8 164 TIMBER CREEK 7950 7.5 6.5 115 8.9 7.8 114 YOUNTS PEAK 8350 24.9 17.9 139 28.4 17.4 163 ----- ----- Basin wide percent of average 140 139 SHOSHONE RIVER BLACKWATER 9780 39.4 23.7 166 29.8 18.8 159 EVENING STAR 9200 42.7 28.3 151 41.0 23.6 174 KIRWIN 9550 15.6 10.6 147 17.0 11.5 148 MARQUETTE 8760 12.9 8.4 154 12.9 10.6 122 SYLVAN LAKE 8420 32.7 23.2 141 33.6 20.1 167 SYLVAN ROAD 8120 21.2 11.5 184 27.5 16.8 164 YOUNTS PEAK 8350 24.9 17.9 139 28.4 17.4 163 ----- ----- Basin wide percent of average 153 160 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.3 7.0 104 9.5 8.8 108 BONE SPRINGS DIV 9350 20.4 17.4 117 18.4 15.9 116 BURGESS JUNCTION 7880 16.0 12.4 129 15.3 12.3 124 CLOUD PEAK RESERVOIR 9860 19.5 16.0 122 16.7 14.3 117 DOME LAKE 8880 15.1 14.4 105 16.2 14.1 115 GRAVE SPRINGS 8550 13.4 -M * 12.4 10.3 120 HANSEN SAWMILL 8760 7.7 7.4 104 9.1 8.5 107 LOST CREEK 8080 17.9 14.6 123 17.2 12.7 135 MIDDLE POWDER 7760 19.1 13.0 147 16.0 12.6 127 POWDER RIVER PASS 9480 -M 11.3 * 14.3 12.4 115 SUCKER CREEK 8880 17.2 12.8 134 17.7 14.0 126 TIE CREEK 6870 8.0 -M * 14.1 11.7 121 ----- ----- Basin wide percent of average 122 120 BELLE FOURCHE BLIND PARK 6890 11.0 11.4 96 16.6 11.0 151 NORTH RAPID CREEK 6130 11.5 -M * 14.7 -M * WARREN PEAK 6520 20.8 11.4 182 -M 8.6 * ----- ----- Basin wide percent of average 139 151* UPPER N. PLATTE RIVER COLUMBINE 9400 29.4 24.6 120 32.4 25.5 127 DIVIDE PEAK 8800 28.2 21.6 131 26.1 24.0 109 ELK RIVER 8700 27.8 20.2 138 25.9 20.0 130 JOE WRIGHT 10120 26.9 23.3 115 30.6 26.4 116 NORTH FRENCH CREEK 10100 36.8 27.1 136 27.6 24.7 112 OLD BATTLE 10000 42.5 34.3 124 39.2 31.7 124 SOUTH BRUSH CREEK 8400 13.6 13.2 103 18.6 17.4 107 TOWER 10500 56.2 47.5 118 48.1 38.1 126 WEBBER SPRINGS 9200 32.3 28.5 113 37.4 26.6 141 WILLOW CREEK PASS 9540 20.7 12.9 160 16.9 13.3 127 ----- ----- Basin wide percent of average 124 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 36.8 27.9 132 28.2 20.6 137 CASPER MTN. 7900 25.1 18.0 139 22.6 15.3 148 CHRISTINA LAKE 9980 20.9 16.1 130 24.0 17.7 136 DEADMAN HILL 10220 17.3 17.3 100 19.3 17.9 108 LAPRELE CREEK 8320 16.0 10.3 155 15.9 12.6 126 RENO HILL 8400 25.9 15.0 173 22.7 20.1 113 ROACH 9700 23.1 17.8 130 22.9 22.4 102 SAND LAKE 10080 40.2 34.6 116 31.2 21.5 145 SOUTH PASS 9040 26.0 17.1 152 25.9 18.0 144 WINDY PEAK 7840 11.1 9.1 122 12.4 10.2 122 ----- ----- Basin wide percent of average 132 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.0 11.1 135 28.7 16.2 177 DIVIDE PEAK 8800 28.2 21.6 131 26.1 24.0 109 OLD BATTLE 10000 42.5 34.3 124 39.2 31.7 124 SANDSTONE RS 8150 18.5 15.2 122 22.6 19.8 114 WHISKEY PARK 8950 39.3 30.0 131 33.9 29.7 114 ----- ----- Basin wide percent of average 128 124 UPPER GREEN RIVER BIG SANDY OPENING 9100 20.0 15.1 132 18.5 17.1 108 BLIND BULL SUM 8650 43.7 30.5 143 33.2 25.2 132 EAST RIM DIVIDE 7930 17.3 14.6 118 17.6 16.0 110 ELKHART PARK G.S. 9400 18.5 14.5 128 19.1 16.8 114 GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.8 16.8 130 KENDALL R.S. 7740 23.9 13.8 173 24.1 16.4 147 LOOMIS PARK 8240 -M 17.2 * 27.8 19.9 140 NEW FORK LAKE 8340 15.7 11.0 143 13.6 15.2 89 SNIDER BASIN 8250 23.9 15.2 157 19.8 16.0 124 SPRING CREEK DIVIDE 9000 36.9 28.9 128 33.3 28.8 116 TRIPLE PEAK 8500 36.8 26.5 139 38.3 32.6 117 ----- ----- Basin wide percent of average 140 121 LOWER GREEN RIVER HAMS FORK 7840 15.4 8.5 181 15.1 14.1 107 HEWINTA 9500 11.0 10.1 109 14.7 14.0 105 HICKERSON PARK 9150 10.4 6.7 155 10.8 10.2 106 HOLE-IN-ROCK 9150 8.5 6.3 135 11.2 10.2 110 INDIAN CREEK 9425 40.4 29.8 136 32.3 27.3 118 KELLEY R.S. 8180 24.5 17.5 140 26.4 19.8 133 STEEL CREEK PARK 10100 17.0 17.3 98 16.6 13.7 121 ----- ----- Basin wide percent of average 132 116 UPPER BEAR RIVER BUG LAKE 7950 33.6 20.6 163 29.7 20.4 146 HAYDEN FORK 9400 18.1 13.2 137 26.0 20.1 129 KELLEY R.S. 8180 24.5 17.5 140 26.4 19.8 133 LILY LAKE 9050 18.1 13.1 138 20.1 15.7 128 MONTE CRISTO 8960 41.4 29.6 140 33.7 26.9 125 SALT RIVER SUMMIT 7600 22.0 14.1 156 24.0 17.8 135 TRIAL LAKE 9960 35.2 25.6 138 34.9 25.1 139 ----- ----- Basin wide percent of average 144 134 ----------------------------------------------------------------------------- -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.