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 11 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.6 16.5 185 35.5 23.6 150 COTTONWOOD CREEK 7600 31.7 23.6 134 33.6 26.5 127 GRANITE CREEK 6770 29.2 18.1 161 33.4 24.9 134 GRASSY LAKE 7265 47.9 37.4 128 53.1 39.4 135 GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.7 16.9 128 LEWIS LAKE DIVIDE 7860 51.9 36.5 142 45.8 40.0 115 PHILLIPS BENCH 8200 43.9 30.5 144 46.4 31.6 147 SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 17.9 137 SNAKE RIVER STATION 6920 28.3 18.7 151 37.1 27.6 134 SPRING CREEK DIVIDE 9000 37.4 29.1 129 33.5 29.0 116 THUMB DIVIDE 7980 32.3 17.3 187 33.8 22.1 153 TOGWOTEE PASS 9580 35.4 26.5 134 34.6 30.0 115 TWO OCEAN PLATEAU 9360 46.3 26.7 173 -M 32.5 * WILLOW CREEK 8450 40.8 31.4 130 45.1 34.0 133 ----- ----- Basin wide percent of average 147 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.1 25.0 144 31.1 19.2 162 BLACK BEAR 7950 -M 39.7 * -M 43.0 * CANYON 7940 23.7 13.4 177 26.9 15.0 179 FISHER CREEK 9100 56.5 37.4 151 -M 38.8 * MADISON PLATEAU 7750 42.7 25.4 168 42.7 27.8 154 NORTHEAST ENTRANCE 7350 13.0 9.1 143 19.6 12.6 156 PARKER PEAK 9400 32.8 22.8 144 -M 16.5 * SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166 THUMB DIVIDE 7980 32.3 17.3 187 33.8 22.1 153 TWO OCEAN PLATEAU 9360 46.3 26.7 173 -M 32.5 * WHISKEY CREEK 6800 25.6 18.0 142 32.2 23.1 139 WHITE MILL 8700 38.7 25.6 151 -M 30.0 * WOLVERINE 7650 12.9 11.8 109 16.1 13.6 118 ----- ----- Basin wide percent of average 154 154 WIND RIVER BURROUGHS CREEK 8750 24.3 15.2 160 26.3 17.6 149 CHRISTINA LAKE 9980 20.7 16.3 127 24.0 17.9 134 COLD SPRINGS 9630 10.6 8.6 123 13.3 11.4 117 HOBBS PARK 10100 18.9 16.1 117 15.2 15.2 100 LITTLE WARM 9620 18.4 13.0 142 20.9 14.3 146 SOUTH PASS 9040 26.3 17.3 152 26.1 18.3 143 ST. LAWRENCE ALT 8620 9.7 7.2 135 12.3 11.0 112 TOGWOTEE PASS 9580 35.4 26.5 134 34.6 30.0 115 TOWNSEND CREEK 8700 11.2 10.3 109 13.6 13.5 101 ----- ----- Basin wide percent of average 134 125 BIGHORN BASIN BALD MTN. 9375 23.7 21.8 109 20.0 18.5 108 BEAR TRAP MEADOW 7900 6.7 7.0 96 9.4 9.0 104 BLACKWATER 9780 39.0 24.0 162 29.9 18.9 158 BONE SPRINGS DIV 9350 20.0 17.6 114 18.5 16.1 115 EVENING STAR 9200 42.4 28.6 148 41.1 23.8 173 GRAVE SPRINGS 8550 13.4 -M * 12.6 10.5 120 KIRWIN 9550 15.3 10.8 142 17.0 11.6 147 LOST CREEK 8080 18.2 14.8 123 17.3 12.9 134 MARQUETTE 8760 12.8 8.5 151 13.0 10.8 120 MIDDLE POWDER 7760 19.1 13.2 145 16.0 12.8 125 OWL CREEK 8975 8.5 4.7 181 7.0 6.8 103 POWDER RIVER PASS 9480 -M 11.4 * 14.4 12.6 114 SHELL CREEK 9580 19.0 15.9 119 16.2 14.0 116 SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166 SYLVAN ROAD 8120 21.1 11.3 187 27.7 17.0 163 TIMBER CREEK 7950 7.6 6.5 117 9.1 8.0 114 YOUNTS PEAK 8350 24.9 18.0 138 28.8 17.6 164 ----- ----- Basin wide percent of average 137 137 SHOSHONE RIVER BLACKWATER 9780 39.0 24.0 162 29.9 18.9 158 EVENING STAR 9200 42.4 28.6 148 41.1 23.8 173 KIRWIN 9550 15.3 10.8 142 17.0 11.6 147 MARQUETTE 8760 12.8 8.5 151 13.0 10.8 120 SYLVAN LAKE 8420 32.4 23.4 138 33.6 20.3 166 SYLVAN ROAD 8120 21.1 11.3 187 27.7 17.0 163 YOUNTS PEAK 8350 24.9 18.0 138 28.8 17.6 164 ----- ----- Basin wide percent of average 151 159 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.7 7.0 96 9.4 9.0 104 BONE SPRINGS DIV 9350 20.0 17.6 114 18.5 16.1 115 BURGESS JUNCTION 7880 15.7 12.6 125 15.1 12.5 121 CLOUD PEAK RESERVOIR 9860 19.5 16.3 120 16.8 14.6 115 DOME LAKE 8880 15.1 14.5 104 16.4 14.3 115 GRAVE SPRINGS 8550 13.4 -M * 12.6 10.5 120 HANSEN SAWMILL 8760 7.2 7.5 96 9.3 8.7 107 LOST CREEK 8080 18.2 14.8 123 17.3 12.9 134 MIDDLE POWDER 7760 19.1 13.2 145 16.0 12.8 125 POWDER RIVER PASS 9480 -M 11.4 * 14.4 12.6 114 SUCKER CREEK 8880 17.3 13.0 133 17.4 14.2 123 TIE CREEK 6870 7.6 -M * 14.1 11.9 118 ----- ----- Basin wide percent of average 119 118 BELLE FOURCHE BLIND PARK 6890 11.3 11.5 98 16.8 11.3 149 NORTH RAPID CREEK 6130 -M -M * -M -M * WARREN PEAK 6520 20.9 11.5 182 -M 8.8 * ----- ----- Basin wide percent of average 140 149* UPPER N. PLATTE RIVER COLUMBINE 9400 30.8 24.5 126 33.5 25.7 130 DIVIDE PEAK 8800 29.3 21.7 135 26.6 24.3 109 ELK RIVER 8700 29.2 20.3 144 27.0 20.2 134 JOE WRIGHT 10120 28.4 23.6 120 31.0 26.8 116 NORTH FRENCH CREEK 10100 36.9 27.5 134 -M 25.0 * OLD BATTLE 10000 43.7 34.8 126 40.7 32.0 127 SOUTH BRUSH CREEK 8400 13.8 13.1 105 18.9 17.7 107 TOWER 10500 57.9 48.0 121 48.2 38.5 125 WEBBER SPRINGS 9200 33.1 28.5 116 38.4 27.0 142 WILLOW CREEK PASS 9540 21.9 13.1 167 17.4 13.5 129 ----- ----- Basin wide percent of average 127 125 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 37.5 28.3 133 28.3 20.9 135 CASPER MTN. 7900 25.3 18.3 138 22.6 15.6 145 CHRISTINA LAKE 9980 20.7 16.3 127 24.0 17.9 134 DEADMAN HILL 10220 18.2 17.5 104 20.2 18.2 111 LAPRELE CREEK 8320 15.3 10.2 150 15.9 12.8 124 RENO HILL 8400 26.2 15.2 172 22.7 20.3 112 ROACH 9700 24.4 17.9 136 24.0 22.7 106 SAND LAKE 10080 40.7 35.0 116 31.5 21.8 144 SOUTH PASS 9040 26.3 17.3 152 26.1 18.3 143 WINDY PEAK 7840 11.1 9.2 121 12.2 10.4 117 ----- ----- Basin wide percent of average 133 127 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.9 11.0 145 28.2 16.4 172 DIVIDE PEAK 8800 29.3 21.7 135 26.6 24.3 109 OLD BATTLE 10000 43.7 34.8 126 40.7 32.0 127 SANDSTONE RS 8150 19.4 15.2 128 23.0 20.1 114 WHISKEY PARK 8950 40.7 30.2 135 33.8 30.1 112 ----- ----- Basin wide percent of average 132 124 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.3 15.2 127 17.4 17.2 101 BLIND BULL SUM 8650 44.0 30.7 143 33.8 25.4 133 EAST RIM DIVIDE 7930 17.3 14.7 118 17.6 16.1 109 ELKHART PARK G.S. 9400 18.3 14.7 124 19.0 16.9 112 GROS VENTRE SUMMIT 8775 23.5 15.9 148 21.7 16.9 128 KENDALL R.S. 7740 23.7 13.6 174 23.9 16.5 145 LOOMIS PARK 8240 -M 17.1 * 27.8 20.0 139 NEW FORK LAKE 8340 15.4 10.9 141 13.5 15.3 88 SNIDER BASIN 8250 23.8 15.3 156 19.8 16.1 123 SPRING CREEK DIVIDE 9000 37.4 29.1 129 33.5 29.0 116 TRIPLE PEAK 8500 36.6 26.6 138 38.4 32.8 117 ----- ----- Basin wide percent of average 139 120 LOWER GREEN RIVER HAMS FORK 7840 15.7 7.6 207 15.2 14.2 107 HEWINTA 9500 12.3 9.7 127 15.3 14.2 108 HICKERSON PARK 9150 12.2 6.7 182 11.4 10.4 110 HOLE-IN-ROCK 9150 10.3 6.3 163 11.7 10.4 112 INDIAN CREEK 9425 40.1 30.0 134 32.4 27.5 118 KELLEY R.S. 8180 24.9 17.5 142 26.1 19.9 131 STEEL CREEK PARK 10100 17.4 17.5 99 17.0 13.9 122 ----- ----- Basin wide percent of average 139 117 UPPER BEAR RIVER BUG LAKE 7950 34.3 20.4 168 30.2 20.6 147 HAYDEN FORK 9400 19.2 12.4 155 26.1 20.4 128 KELLEY R.S. 8180 24.9 17.5 142 26.1 19.9 131 LILY LAKE 9050 19.0 13.0 146 20.5 15.9 129 MONTE CRISTO 8960 42.2 29.5 143 34.1 27.2 125 SALT RIVER SUMMIT 7600 22.3 14.0 159 24.5 17.9 137 TRIAL LAKE 9960 35.8 25.7 139 35.4 25.4 139 ----- ----- Basin wide percent of average 149 134 ----------------------------------------------------------------------------- -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.