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 MONDAY: APRIL 7 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.2 17.0 178 35.1 23.3 151 COTTONWOOD CREEK 7600 31.4 24.0 131 33.1 26.2 126 GRANITE CREEK 6770 29.1 18.4 158 33.2 24.6 135 GRASSY LAKE 7265 47.4 36.9 128 53.1 38.9 137 GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.7 16.7 130 LEWIS LAKE DIVIDE 7860 52.0 36.2 144 45.7 39.5 116 PHILLIPS BENCH 8200 43.4 30.0 145 46.3 31.2 148 SALT RIVER SUMMIT 7600 21.9 14.2 154 23.8 17.7 134 SNAKE RIVER STATION 6920 28.4 18.7 152 36.8 27.2 135 SPRING CREEK DIVIDE 9000 36.5 28.8 127 33.0 28.6 115 THUMB DIVIDE 7980 32.2 17.3 186 33.6 21.8 154 TOGWOTEE PASS 9580 35.2 26.0 135 34.4 29.6 116 TWO OCEAN PLATEAU 9360 45.8 26.7 172 -M 32.1 * WILLOW CREEK 8450 40.2 31.0 130 44.1 33.6 131 ----- ----- Basin wide percent of average 146 132 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.2 24.5 148 30.9 18.8 164 BLACK BEAR 7950 -M 39.2 * -M 42.3 * CANYON 7940 23.2 13.3 174 26.5 14.8 179 FISHER CREEK 9100 56.3 36.9 153 -M 38.1 * MADISON PLATEAU 7750 42.5 25.1 169 42.4 27.3 155 NORTHEAST ENTRANCE 7350 12.2 9.1 134 19.5 12.3 159 PARKER PEAK 9400 32.5 22.4 145 -M 16.2 * SYLVAN LAKE 8420 32.7 23.0 142 33.4 19.9 168 THUMB DIVIDE 7980 32.2 17.3 186 33.6 21.8 154 TWO OCEAN PLATEAU 9360 45.8 26.7 172 -M 32.1 * WHISKEY CREEK 6800 25.7 17.8 144 32.1 22.7 141 WHITE MILL 8700 38.5 25.4 152 -M 29.5 * WOLVERINE 7650 14.0 11.7 120 16.0 13.3 120 ----- ----- Basin wide percent of average 155 155 WIND RIVER BURROUGHS CREEK 8750 24.0 15.1 159 26.1 17.2 152 CHRISTINA LAKE 9980 20.7 16.0 129 23.8 17.5 136 COLD SPRINGS 9630 10.7 8.5 126 13.1 11.1 118 HOBBS PARK 10100 18.7 15.7 119 15.1 14.8 102 LITTLE WARM 9620 18.2 12.4 147 20.8 13.9 150 SOUTH PASS 9040 25.7 16.9 152 25.8 17.8 145 ST. LAWRENCE ALT 8620 9.5 7.4 128 12.0 10.7 112 TOGWOTEE PASS 9580 35.2 26.0 135 34.4 29.6 116 TOWNSEND CREEK 8700 11.1 10.1 110 13.4 13.1 102 ----- ----- Basin wide percent of average 136 127 BIGHORN BASIN BALD MTN. 9375 23.5 21.3 110 19.2 18.1 106 BEAR TRAP MEADOW 7900 7.5 7.1 106 9.5 8.7 109 BLACKWATER 9780 38.9 23.4 166 29.2 18.6 157 BONE SPRINGS DIV 9350 20.0 17.2 116 18.1 15.7 115 EVENING STAR 9200 42.1 28.1 150 40.6 23.3 174 GRAVE SPRINGS 8550 13.6 -M * 12.4 10.2 122 KIRWIN 9550 15.3 10.5 146 16.9 11.3 150 LOST CREEK 8080 17.8 14.3 124 17.1 12.4 138 MARQUETTE 8760 12.7 8.4 151 12.9 10.3 125 MIDDLE POWDER 7760 19.1 12.8 149 15.9 12.4 128 OWL CREEK 8975 8.7 4.6 189 6.9 6.6 105 POWDER RIVER PASS 9480 -M 11.2 * 14.3 12.1 118 SHELL CREEK 9580 18.9 15.5 122 15.9 13.7 116 SYLVAN LAKE 8420 32.7 23.0 142 33.4 19.9 168 SYLVAN ROAD 8120 21.1 11.8 179 27.4 16.7 164 TIMBER CREEK 7950 7.7 6.4 120 8.9 7.6 117 YOUNTS PEAK 8350 24.6 17.7 139 28.7 17.2 167 ----- ----- Basin wide percent of average 140 139 SHOSHONE RIVER BLACKWATER 9780 38.9 23.4 166 29.2 18.6 157 EVENING STAR 9200 42.1 28.1 150 40.6 23.3 174 KIRWIN 9550 15.3 10.5 146 16.9 11.3 150 MARQUETTE 8760 12.7 8.4 151 12.9 10.3 125 SYLVAN LAKE 8420 32.7 23.0 142 33.4 19.9 168 SYLVAN ROAD 8120 21.1 11.8 179 27.4 16.7 164 YOUNTS PEAK 8350 24.6 17.7 139 28.7 17.2 167 ----- ----- Basin wide percent of average 152 161 POWDER-TONGUE BEAR TRAP MEADOW 7900 7.5 7.1 106 9.5 8.7 109 BONE SPRINGS DIV 9350 20.0 17.2 116 18.1 15.7 115 BURGESS JUNCTION 7880 15.8 12.3 128 15.2 12.1 126 CLOUD PEAK RESERVOIR 9860 19.4 15.7 124 16.6 14.1 118 DOME LAKE 8880 15.2 14.2 107 16.1 13.8 117 GRAVE SPRINGS 8550 13.6 -M * 12.4 10.2 122 HANSEN SAWMILL 8760 7.6 7.3 104 9.1 8.4 108 LOST CREEK 8080 17.8 14.3 124 17.1 12.4 138 MIDDLE POWDER 7760 19.1 12.8 149 15.9 12.4 128 POWDER RIVER PASS 9480 -M 11.2 * 14.3 12.1 118 SUCKER CREEK 8880 17.1 12.7 135 17.5 13.8 127 TIE CREEK 6870 8.2 -M * 13.9 11.6 120 ----- ----- Basin wide percent of average 123 121 BELLE FOURCHE BLIND PARK 6890 10.8 11.3 96 16.4 10.8 152 NORTH RAPID CREEK 6130 11.4 -M * 14.6 -M * WARREN PEAK 6520 20.6 11.3 182 -M 8.5 * ----- ----- Basin wide percent of average 139 152* UPPER N. PLATTE RIVER COLUMBINE 9400 29.2 24.7 118 31.9 25.2 127 DIVIDE PEAK 8800 27.9 21.5 130 25.7 23.7 108 ELK RIVER 8700 27.2 20.2 135 25.9 19.8 131 JOE WRIGHT 10120 26.3 23.0 114 30.5 26.1 117 NORTH FRENCH CREEK 10100 36.1 26.7 135 27.6 24.4 113 OLD BATTLE 10000 41.7 33.7 124 39.0 31.3 125 SOUTH BRUSH CREEK 8400 13.5 13.2 102 18.3 17.2 106 TOWER 10500 55.6 46.9 119 48.0 37.6 128 WEBBER SPRINGS 9200 32.1 28.4 113 37.2 26.3 141 WILLOW CREEK PASS 9540 20.3 12.6 161 16.4 13.2 124 ----- ----- Basin wide percent of average 124 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 36.5 27.5 133 28.1 20.3 138 CASPER MTN. 7900 25.1 17.6 143 22.4 15.0 149 CHRISTINA LAKE 9980 20.7 16.0 129 23.8 17.5 136 DEADMAN HILL 10220 17.2 17.1 101 19.1 17.6 109 LAPRELE CREEK 8320 16.1 10.3 156 15.7 12.4 127 RENO HILL 8400 25.9 14.9 174 22.6 19.8 114 ROACH 9700 23.1 17.7 131 22.8 22.0 104 SAND LAKE 10080 39.7 34.2 116 30.8 21.2 145 SOUTH PASS 9040 25.7 16.9 152 25.8 17.8 145 WINDY PEAK 7840 11.2 9.0 124 12.3 10.0 123 ----- ----- Basin wide percent of average 133 129 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 14.5 11.1 131 28.6 15.9 180 DIVIDE PEAK 8800 27.9 21.5 130 25.7 23.7 108 OLD BATTLE 10000 41.7 33.7 124 39.0 31.3 125 SANDSTONE RS 8150 18.2 15.1 121 22.4 19.5 115 WHISKEY PARK 8950 38.6 29.7 130 33.7 29.4 115 ----- ----- Basin wide percent of average 127 125 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.5 15.0 130 20.6 17.0 121 BLIND BULL SUM 8650 43.3 30.3 143 33.0 25.1 131 EAST RIM DIVIDE 7930 17.1 14.4 119 17.5 15.9 110 ELKHART PARK G.S. 9400 18.3 14.4 127 18.9 16.7 113 GROS VENTRE SUMMIT 8775 23.2 15.9 146 21.7 16.7 130 KENDALL R.S. 7740 23.7 14.0 169 23.9 16.2 148 LOOMIS PARK 8240 -M 17.3 * 27.6 19.7 140 NEW FORK LAKE 8340 15.5 11.0 141 13.5 15.1 89 SNIDER BASIN 8250 23.8 15.2 157 19.6 15.8 124 SPRING CREEK DIVIDE 9000 36.5 28.8 127 33.0 28.6 115 TRIPLE PEAK 8500 36.5 26.3 139 38.0 32.4 117 ----- ----- Basin wide percent of average 139 122 LOWER GREEN RIVER HAMS FORK 7840 15.8 9.5 166 14.8 14.0 106 HEWINTA 9500 12.2 10.4 117 14.8 13.7 108 HICKERSON PARK 9150 10.0 6.8 147 10.8 10.1 107 HOLE-IN-ROCK 9150 8.0 6.4 125 11.1 10.1 110 INDIAN CREEK 9425 39.9 29.6 135 32.1 27.1 118 KELLEY R.S. 8180 24.7 17.4 142 26.2 19.6 134 STEEL CREEK PARK 10100 16.9 17.2 98 16.5 13.5 122 ----- ----- Basin wide percent of average 131 117 UPPER BEAR RIVER BUG LAKE 7950 33.7 20.7 163 29.5 20.2 146 HAYDEN FORK 9400 19.1 14.1 135 25.8 19.9 130 KELLEY R.S. 8180 24.7 17.4 142 26.2 19.6 134 LILY LAKE 9050 17.8 13.2 135 20.2 15.4 131 MONTE CRISTO 8960 40.4 29.6 136 33.6 26.6 126 SALT RIVER SUMMIT 7600 21.9 14.2 154 23.8 17.7 134 TRIAL LAKE 9960 35.2 25.4 139 35.0 24.9 141 ----- ----- Basin wide percent of average 143 135 ----------------------------------------------------------------------------- -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.