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 22 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 29.0 13.7 212 37.5 24.5 153 COTTONWOOD CREEK 7600 30.1 21.9 137 35.1 27.5 128 GRANITE CREEK 6770 27.0 15.7 172 34.4 26.0 132 GRASSY LAKE 7265 48.1 36.1 133 58.0 40.8 142 GROS VENTRE SUMMIT 8775 23.1 15.1 153 22.3 17.6 127 LEWIS LAKE DIVIDE 7860 52.7 35.8 147 60.1 41.4 145 PHILLIPS BENCH 8200 40.3 30.3 133 48.8 32.7 149 SALT RIVER SUMMIT 7600 20.5 12.5 164 25.0 18.6 134 SNAKE RIVER STATION 6920 26.1 17.6 148 38.8 28.6 136 SPRING CREEK DIVIDE 9000 38.5 29.5 131 34.5 30.0 115 THUMB DIVIDE 7980 31.4 16.4 191 35.2 22.9 154 TOGWOTEE PASS 9580 36.3 27.6 132 36.5 31.0 118 TWO OCEAN PLATEAU 9360 48.3 27.0 179 -M 33.7 * WILLOW CREEK 8450 40.1 31.8 126 46.6 35.2 132 ----- ----- Basin wide percent of average 148 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.7 * 32.1 20.3 158 BLACK BEAR 7950 -M 40.0 * -M 44.9 * CANYON 7940 23.1 12.4 186 -M 15.7 * FISHER CREEK 9100 58.7 38.3 153 -M 40.7 * MADISON PLATEAU 7750 45.7 24.8 184 44.2 28.9 153 NORTHEAST ENTRANCE 7350 10.3 7.6 136 21.2 13.3 159 PARKER PEAK 9400 34.2 23.4 146 -M 17.5 * SYLVAN LAKE 8420 32.1 23.9 134 34.9 21.4 163 THUMB DIVIDE 7980 31.4 16.4 191 35.2 22.9 154 TWO OCEAN PLATEAU 9360 48.3 27.0 179 -M 33.7 * WHISKEY CREEK 6800 24.5 16.9 145 33.5 24.1 139 WHITE MILL 8700 40.8 26.0 157 -M 31.4 * WOLVERINE 7650 13.1 10.2 128 16.9 14.5 117 ----- ----- Basin wide percent of average 160 150 WIND RIVER BURROUGHS CREEK 8750 24.3 14.3 170 27.5 18.6 148 CHRISTINA LAKE 9980 21.2 17.3 123 24.8 19.1 130 COLD SPRINGS 9630 8.5 7.9 108 13.6 12.4 110 HOBBS PARK 10100 19.1 17.2 111 15.8 16.4 96 LITTLE WARM 9620 18.2 12.1 150 21.6 15.4 140 SOUTH PASS 9040 25.5 17.8 143 26.3 19.6 134 ST. LAWRENCE ALT 8620 8.7 6.4 136 12.8 11.8 108 TOGWOTEE PASS 9580 36.3 27.6 132 36.5 31.0 118 TOWNSEND CREEK 8700 10.3 10.0 103 13.8 14.6 95 ----- ----- Basin wide percent of average 132 121 BIGHORN BASIN BALD MTN. 9375 24.4 23.1 106 20.7 19.8 105 BEAR TRAP MEADOW 7900 6.5 5.7 114 11.0 9.9 111 BLACKWATER 9780 40.8 25.1 163 31.4 19.9 158 BONE SPRINGS DIV 9350 20.3 18.2 112 19.5 17.2 113 EVENING STAR 9200 43.0 29.9 144 42.7 24.9 171 GRAVE SPRINGS 8550 12.9 -M * 13.0 11.6 112 KIRWIN 9550 16.2 11.4 142 17.6 12.6 140 LOST CREEK 8080 18.7 15.5 121 18.0 14.0 129 MARQUETTE 8760 12.9 8.7 148 13.7 12.3 111 MIDDLE POWDER 7760 18.6 14.1 132 16.6 13.9 119 OWL CREEK 8975 6.6 4.1 161 7.2 7.5 96 POWDER RIVER PASS 9480 -M 11.1 * 15.5 13.7 113 SHELL CREEK 9580 19.7 16.6 119 16.8 15.1 111 SYLVAN LAKE 8420 32.1 23.9 134 34.9 21.4 163 SYLVAN ROAD 8120 19.2 9.5 202 28.6 17.9 160 TIMBER CREEK 7950 6.5 6.3 103 9.1 9.1 100 YOUNTS PEAK 8350 24.4 18.3 133 -M 18.5 * ----- ----- Basin wide percent of average 135 131 SHOSHONE RIVER BLACKWATER 9780 40.8 25.1 163 31.4 19.9 158 EVENING STAR 9200 43.0 29.9 144 42.7 24.9 171 KIRWIN 9550 16.2 11.4 142 17.6 12.6 140 MARQUETTE 8760 12.9 8.7 148 13.7 12.3 111 SYLVAN LAKE 8420 32.1 23.9 134 34.9 21.4 163 SYLVAN ROAD 8120 19.2 9.5 202 28.6 17.9 160 YOUNTS PEAK 8350 24.4 18.3 133 -M 18.5 * ----- ----- Basin wide percent of average 149 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.5 5.7 114 11.0 9.9 111 BONE SPRINGS DIV 9350 20.3 18.2 112 19.5 17.2 113 BURGESS JUNCTION 7880 16.0 13.2 121 15.7 13.5 116 CLOUD PEAK RESERVOIR 9860 19.8 17.2 115 17.5 16.0 109 DOME LAKE 8880 15.2 14.9 102 16.9 15.4 110 GRAVE SPRINGS 8550 12.9 -M * 13.0 11.6 112 HANSEN SAWMILL 8760 6.1 7.3 84 9.8 9.6 102 LOST CREEK 8080 18.7 15.5 121 18.0 14.0 129 MIDDLE POWDER 7760 18.6 14.1 132 16.6 13.9 119 POWDER RIVER PASS 9480 -M 11.1 * 15.5 13.7 113 SUCKER CREEK 8880 17.5 13.5 130 18.2 15.5 117 TIE CREEK 6870 7.2 -M * 14.9 13.0 115 ----- ----- Basin wide percent of average 116 114 BELLE FOURCHE BLIND PARK 6890 8.6 10.7 80 17.8 12.7 140 NORTH RAPID CREEK 6130 10.7 -M * 16.1 -M * WARREN PEAK 6520 20.5 10.7 192 -M 9.6 * ----- ----- Basin wide percent of average 136 140* UPPER N. PLATTE RIVER COLUMBINE 9400 28.9 23.4 124 34.8 27.0 129 DIVIDE PEAK 8800 27.6 20.7 133 27.1 26.0 104 ELK RIVER 8700 27.7 18.6 149 27.9 21.2 132 JOE WRIGHT 10120 30.3 24.4 124 33.0 28.7 115 NORTH FRENCH CREEK 10100 37.5 28.7 131 31.8 26.7 119 OLD BATTLE 10000 44.0 36.9 119 41.3 34.1 121 SOUTH BRUSH CREEK 8400 12.4 12.0 103 19.2 19.3 99 TOWER 10500 58.4 49.9 117 53.6 41.1 130 WEBBER SPRINGS 9200 31.9 27.5 116 38.8 29.0 134 WILLOW CREEK PASS 9540 22.5 13.5 167 18.2 14.6 125 ----- ----- Basin wide percent of average 126 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 39.2 29.0 135 31.1 22.5 138 CASPER MTN. 7900 23.7 18.5 128 23.1 17.4 133 CHRISTINA LAKE 9980 21.2 17.3 123 24.8 19.1 130 DEADMAN HILL 10220 19.2 18.4 104 21.1 19.8 107 LAPRELE CREEK 8320 13.9 8.4 165 16.2 13.8 117 RENO HILL 8400 24.4 14.6 167 23.2 21.4 108 ROACH 9700 25.9 18.1 143 24.7 24.4 101 SAND LAKE 10080 41.3 36.4 113 32.6 23.5 139 SOUTH PASS 9040 25.5 17.8 143 26.3 19.6 134 WINDY PEAK 7840 9.0 8.7 103 13.1 11.4 115 ----- ----- Basin wide percent of average 130 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.1 8.2 123 30.2 17.5 173 DIVIDE PEAK 8800 27.6 20.7 133 27.1 26.0 104 OLD BATTLE 10000 44.0 36.9 119 41.3 34.1 121 SANDSTONE RS 8150 15.5 12.9 120 23.3 21.7 107 WHISKEY PARK 8950 40.7 30.2 135 36.3 32.3 112 ----- ----- Basin wide percent of average 127 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.2 14.7 131 18.2 17.9 102 BLIND BULL SUM 8650 42.7 27.4 156 34.7 26.2 132 EAST RIM DIVIDE 7930 17.0 14.9 114 18.0 16.8 107 ELKHART PARK G.S. 9400 18.8 14.6 129 19.5 17.6 111 GROS VENTRE SUMMIT 8775 23.1 15.1 153 22.3 17.6 127 KENDALL R.S. 7740 21.1 12.0 176 24.4 17.1 143 LOOMIS PARK 8240 -M 16.1 * 28.5 20.8 137 NEW FORK LAKE 8340 13.8 10.0 138 14.0 15.9 88 SNIDER BASIN 8250 21.3 14.4 148 20.4 16.7 122 SPRING CREEK DIVIDE 9000 38.5 29.5 131 34.5 30.0 115 TRIPLE PEAK 8500 33.4 26.1 128 40.5 34.0 119 ----- ----- Basin wide percent of average 139 119 LOWER GREEN RIVER HAMS FORK 7840 12.7 5.7 223 16.0 14.8 108 HEWINTA 9500 9.4 7.4 127 15.6 15.3 102 HICKERSON PARK 9150 11.4 5.0 228 11.6 11.5 101 HOLE-IN-ROCK 9150 9.3 4.5 207 12.0 11.5 104 INDIAN CREEK 9425 40.5 29.7 136 33.1 28.4 117 KELLEY R.S. 8180 22.6 16.5 137 31.5 20.7 152 STEEL CREEK PARK 10100 17.7 18.3 97 17.6 15.1 117 ----- ----- Basin wide percent of average 142 117 UPPER BEAR RIVER BUG LAKE 7950 31.3 18.2 172 30.7 21.7 141 HAYDEN FORK 9400 14.7 9.0 163 26.9 21.8 123 KELLEY R.S. 8180 22.6 16.5 137 31.5 20.7 152 LILY LAKE 9050 16.0 11.1 144 21.0 17.0 124 MONTE CRISTO 8960 37.0 27.9 133 34.6 28.9 120 SALT RIVER SUMMIT 7600 20.5 12.5 164 25.0 18.6 134 TRIAL LAKE 9960 34.9 25.1 139 35.9 27.0 133 ----- ----- Basin wide percent of average 147 132 ----------------------------------------------------------------------------- -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.