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 TUESDAY: APRIL 15 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 30.3 16.0 189 35.9 23.9 150 COTTONWOOD CREEK 7600 31.6 23.3 136 34.0 26.9 126 GRANITE CREEK 6770 29.1 17.8 163 33.4 25.3 132 GRASSY LAKE 7265 48.9 37.8 129 53.3 39.9 134 GROS VENTRE SUMMIT 8775 23.2 16.0 145 21.9 17.1 128 LEWIS LAKE DIVIDE 7860 52.9 36.8 144 45.9 40.5 113 PHILLIPS BENCH 8200 44.3 30.9 143 46.4 32.0 145 SALT RIVER SUMMIT 7600 22.2 13.8 161 24.6 18.2 135 SNAKE RIVER STATION 6920 28.2 18.6 152 37.6 28.0 134 SPRING CREEK DIVIDE 9000 37.9 29.4 129 33.7 29.4 115 THUMB DIVIDE 7980 32.1 17.4 184 34.0 22.4 152 TOGWOTEE PASS 9580 35.6 27.0 132 34.8 30.4 114 TWO OCEAN PLATEAU 9360 47.0 26.6 177 -M 32.9 * WILLOW CREEK 8450 40.3 31.7 127 45.5 34.4 132 ----- ----- Basin wide percent of average 147 131 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 36.7 25.5 144 31.5 19.6 161 BLACK BEAR 7950 -M 40.2 * -M 43.7 * CANYON 7940 23.1 13.5 171 26.9 15.3 176 FISHER CREEK 9100 56.8 37.9 150 -M 39.5 * MADISON PLATEAU 7750 42.8 25.6 167 43.0 28.2 152 NORTHEAST ENTRANCE 7350 12.8 9.0 142 19.7 12.8 154 PARKER PEAK 9400 33.0 23.2 142 -M 16.9 * SYLVAN LAKE 8420 32.1 23.9 134 33.8 20.7 163 THUMB DIVIDE 7980 32.1 17.4 184 34.0 22.4 152 TWO OCEAN PLATEAU 9360 47.0 26.6 177 -M 32.9 * WHISKEY CREEK 6800 25.2 18.2 138 32.1 23.5 137 WHITE MILL 8700 39.4 25.8 153 -M 30.5 * WOLVERINE 7650 13.0 11.8 110 16.3 13.9 117 ----- ----- Basin wide percent of average 152 152 WIND RIVER BURROUGHS CREEK 8750 24.6 15.3 161 26.8 18.0 149 CHRISTINA LAKE 9980 20.7 16.7 124 24.0 18.3 131 COLD SPRINGS 9630 10.5 8.7 121 13.5 11.8 114 HOBBS PARK 10100 19.1 16.5 116 15.5 15.6 99 LITTLE WARM 9620 18.5 13.5 137 21.3 14.7 145 SOUTH PASS 9040 26.5 17.6 151 26.2 18.7 140 ST. LAWRENCE ALT 8620 9.8 7.1 138 12.8 11.3 113 TOGWOTEE PASS 9580 35.6 27.0 132 34.8 30.4 114 TOWNSEND CREEK 8700 11.3 10.4 109 14.0 13.9 101 ----- ----- Basin wide percent of average 133 124 BIGHORN BASIN BALD MTN. 9375 23.8 22.3 107 20.1 19.0 106 BEAR TRAP MEADOW 7900 -M 6.9 * 10.6 9.3 114 BLACKWATER 9780 40.1 24.7 162 30.5 19.3 158 BONE SPRINGS DIV 9350 20.5 18.1 113 18.5 16.5 112 EVENING STAR 9200 42.5 29.2 146 41.4 24.2 171 GRAVE SPRINGS 8550 13.2 -M * 12.6 10.9 116 KIRWIN 9550 15.8 11.1 142 17.1 12.0 143 LOST CREEK 8080 18.6 15.2 122 17.5 13.3 132 MARQUETTE 8760 13.1 8.7 151 13.4 11.4 118 MIDDLE POWDER 7760 19.1 13.6 140 16.2 13.2 123 OWL CREEK 8975 9.4 4.7 200 7.4 7.1 104 POWDER RIVER PASS 9480 -M 11.6 * 14.8 13.0 114 SHELL CREEK 9580 19.3 16.2 119 16.2 14.4 112 SYLVAN LAKE 8420 32.1 23.9 134 33.8 20.7 163 SYLVAN ROAD 8120 20.3 10.8 188 27.7 17.3 160 TIMBER CREEK 7950 7.7 6.6 117 9.1 8.4 108 YOUNTS PEAK 8350 25.1 18.3 137 -M 17.9 * ----- ----- Basin wide percent of average 138 133 SHOSHONE RIVER BLACKWATER 9780 40.1 24.7 162 30.5 19.3 158 EVENING STAR 9200 42.5 29.2 146 41.4 24.2 171 KIRWIN 9550 15.8 11.1 142 17.1 12.0 143 MARQUETTE 8760 13.1 8.7 151 13.4 11.4 118 SYLVAN LAKE 8420 32.1 23.9 134 33.8 20.7 163 SYLVAN ROAD 8120 20.3 10.8 188 27.7 17.3 160 YOUNTS PEAK 8350 25.1 18.3 137 -M 17.9 * ----- ----- Basin wide percent of average 149 156 POWDER-TONGUE BEAR TRAP MEADOW 7900 -M 6.9 * 10.6 9.3 114 BONE SPRINGS DIV 9350 20.5 18.1 113 18.5 16.5 112 BURGESS JUNCTION 7880 15.9 12.9 123 15.6 12.9 121 CLOUD PEAK RESERVOIR 9860 19.6 16.8 117 16.9 15.1 112 DOME LAKE 8880 14.6 14.8 99 16.5 14.7 112 GRAVE SPRINGS 8550 13.2 -M * 12.6 10.9 116 HANSEN SAWMILL 8760 5.5 7.6 72 9.3 9.0 103 LOST CREEK 8080 18.6 15.2 122 17.5 13.3 132 MIDDLE POWDER 7760 19.1 13.6 140 16.2 13.2 123 POWDER RIVER PASS 9480 -M 11.6 * 14.8 13.0 114 SUCKER CREEK 8880 17.1 13.3 129 18.0 14.7 122 TIE CREEK 6870 7.3 -M * 14.4 12.3 117 ----- ----- Basin wide percent of average 117 117 BELLE FOURCHE BLIND PARK 6890 11.0 11.6 95 17.1 11.8 145 NORTH RAPID CREEK 6130 12.4 -M * 15.2 -M * WARREN PEAK 6520 21.3 11.6 184 -M 9.1 * ----- ----- Basin wide percent of average 139 145* UPPER N. PLATTE RIVER COLUMBINE 9400 30.8 24.4 126 33.9 26.2 129 DIVIDE PEAK 8800 29.5 21.8 135 27.3 24.9 110 ELK RIVER 8700 29.6 20.4 145 27.6 20.6 134 JOE WRIGHT 10120 28.9 24.2 119 32.3 27.5 117 NORTH FRENCH CREEK 10100 37.3 28.2 132 31.2 25.6 122 OLD BATTLE 10000 44.1 35.8 123 41.0 32.8 125 SOUTH BRUSH CREEK 8400 13.4 13.0 103 19.2 18.3 105 TOWER 10500 58.2 49.0 119 48.4 39.5 123 WEBBER SPRINGS 9200 33.1 28.6 116 38.6 27.7 139 WILLOW CREEK PASS 9540 22.2 13.5 164 17.7 13.9 127 ----- ----- Basin wide percent of average 126 123 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 38.0 29.0 131 29.1 21.5 135 CASPER MTN. 7900 25.4 19.0 134 22.9 16.2 141 CHRISTINA LAKE 9980 20.7 16.7 124 24.0 18.3 131 DEADMAN HILL 10220 18.8 17.8 106 20.6 18.8 110 LAPRELE CREEK 8320 15.1 10.0 151 16.2 13.2 123 RENO HILL 8400 26.4 15.5 170 23.1 20.7 112 ROACH 9700 24.6 18.1 136 24.3 23.3 104 SAND LAKE 10080 41.3 35.7 116 31.7 22.4 142 SOUTH PASS 9040 26.5 17.6 151 26.2 18.7 140 WINDY PEAK 7840 10.6 9.3 114 13.4 10.8 124 ----- ----- Basin wide percent of average 131 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.6 10.9 161 29.7 16.8 177 DIVIDE PEAK 8800 29.5 21.8 135 27.3 24.9 110 OLD BATTLE 10000 44.1 35.8 123 41.0 32.8 125 SANDSTONE RS 8150 19.8 15.3 129 23.4 20.7 113 WHISKEY PARK 8950 41.6 30.7 136 33.9 30.9 110 ----- ----- Basin wide percent of average 133 123 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.5 15.4 127 17.8 17.5 102 BLIND BULL SUM 8650 44.4 31.0 143 33.9 25.7 132 EAST RIM DIVIDE 7930 17.4 15.0 116 17.8 16.3 109 ELKHART PARK G.S. 9400 18.4 15.0 123 19.3 17.2 112 GROS VENTRE SUMMIT 8775 23.2 16.0 145 21.9 17.1 128 KENDALL R.S. 7740 23.9 13.1 182 24.2 16.7 145 LOOMIS PARK 8240 -M 16.9 * 28.0 20.3 138 NEW FORK LAKE 8340 15.7 10.7 147 13.8 15.5 89 SNIDER BASIN 8250 23.5 15.5 152 19.9 16.3 122 SPRING CREEK DIVIDE 9000 37.9 29.4 129 33.7 29.4 115 TRIPLE PEAK 8500 36.5 26.9 136 38.7 33.2 117 ----- ----- Basin wide percent of average 139 119 LOWER GREEN RIVER HAMS FORK 7840 15.7 5.7 275 15.4 14.4 107 HEWINTA 9500 14.1 9.0 157 15.1 14.6 103 HICKERSON PARK 9150 11.5 6.6 174 11.5 10.8 106 HOLE-IN-ROCK 9150 10.9 6.2 176 11.7 10.8 108 INDIAN CREEK 9425 40.4 30.4 133 32.7 27.8 118 KELLEY R.S. 8180 25.1 17.6 143 26.5 20.2 131 STEEL CREEK PARK 10100 17.5 17.9 98 17.1 14.3 120 ----- ----- Basin wide percent of average 145 115 UPPER BEAR RIVER BUG LAKE 7950 34.4 20.0 172 30.5 21.0 145 HAYDEN FORK 9400 18.6 10.8 172 26.2 20.9 125 KELLEY R.S. 8180 25.1 17.6 143 26.5 20.2 131 LILY LAKE 9050 20.2 12.9 157 20.5 16.3 126 MONTE CRISTO 8960 43.2 29.3 147 34.3 27.8 123 SALT RIVER SUMMIT 7600 22.2 13.8 161 24.6 18.2 135 TRIAL LAKE 9960 36.4 26.0 140 35.3 26.0 136 ----- ----- Basin wide percent of average 153 132 ----------------------------------------------------------------------------- -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.