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 THURSDAY: APRIL 24 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 28.4 13.0 218 37.6 24.6 153 COTTONWOOD CREEK 7600 31.3 21.4 146 36.1 27.6 131 GRANITE CREEK 6770 26.7 15.0 178 34.5 26.1 132 GRASSY LAKE 7265 47.3 35.6 133 58.2 41.0 142 GROS VENTRE SUMMIT 8775 23.2 14.8 157 22.5 17.7 127 LEWIS LAKE DIVIDE 7860 52.6 35.5 148 60.6 41.7 145 PHILLIPS BENCH 8200 40.9 30.1 136 49.2 32.9 150 SALT RIVER SUMMIT 7600 20.9 12.1 173 25.4 18.8 135 SNAKE RIVER STATION 6920 24.8 17.4 143 38.8 28.8 135 SPRING CREEK DIVIDE 9000 39.9 29.5 135 35.3 30.2 117 THUMB DIVIDE 7980 31.3 16.1 194 35.2 23.1 152 TOGWOTEE PASS 9580 36.4 27.7 131 36.6 31.2 117 TWO OCEAN PLATEAU 9360 48.4 27.2 178 -M 33.9 * WILLOW CREEK 8450 42.0 31.8 132 47.2 35.4 133 ----- ----- Basin wide percent of average 151 136 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 25.8 * 32.2 20.5 157 BLACK BEAR 7950 -M 40.0 * -M 45.3 * CANYON 7940 22.6 12.0 188 -M 15.9 * FISHER CREEK 9100 58.7 38.4 153 -M 41.0 * MADISON PLATEAU 7750 44.5 24.6 181 44.3 29.2 152 NORTHEAST ENTRANCE 7350 10.1 7.3 138 21.2 13.4 158 PARKER PEAK 9400 34.4 23.5 146 -M 17.6 * SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162 THUMB DIVIDE 7980 31.3 16.1 194 35.2 23.1 152 TWO OCEAN PLATEAU 9360 48.4 27.2 178 -M 33.9 * WHISKEY CREEK 6800 24.2 16.5 147 33.4 24.3 137 WHITE MILL 8700 40.8 26.1 156 -M 31.7 * WOLVERINE 7650 12.7 9.7 131 16.9 14.6 116 ----- ----- Basin wide percent of average 160 149 WIND RIVER BURROUGHS CREEK 8750 24.6 14.0 176 27.8 18.8 148 CHRISTINA LAKE 9980 21.1 17.4 121 24.9 19.3 129 COLD SPRINGS 9630 8.8 7.6 116 14.6 12.5 117 HOBBS PARK 10100 19.7 17.3 114 16.2 16.6 98 LITTLE WARM 9620 18.7 11.8 158 22.2 15.6 142 SOUTH PASS 9040 25.9 17.9 145 26.6 19.8 134 ST. LAWRENCE ALT 8620 9.0 6.1 148 12.9 12.0 108 TOGWOTEE PASS 9580 36.4 27.7 131 36.6 31.2 117 TOWNSEND CREEK 8700 10.5 9.9 106 14.3 14.8 97 ----- ----- Basin wide percent of average 135 122 BIGHORN BASIN BALD MTN. 9375 24.3 23.3 104 20.7 20.0 104 BEAR TRAP MEADOW 7900 6.0 5.4 111 11.2 10.0 112 BLACKWATER 9780 41.3 25.3 163 31.9 20.0 160 BONE SPRINGS DIV 9350 20.7 18.3 113 19.5 17.4 112 EVENING STAR 9200 43.6 30.1 145 43.1 25.2 171 GRAVE SPRINGS 8550 12.8 -M * 13.1 11.7 112 KIRWIN 9550 16.5 11.4 145 17.8 12.7 140 LOST CREEK 8080 18.9 15.5 122 18.0 14.3 126 MARQUETTE 8760 12.9 8.6 150 13.8 12.6 110 MIDDLE POWDER 7760 18.5 14.3 129 16.8 14.1 119 OWL CREEK 8975 6.6 4.0 165 7.5 7.7 97 POWDER RIVER PASS 9480 -M 11.0 * 15.5 14.0 111 SHELL CREEK 9580 19.7 16.7 118 16.9 15.2 111 SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162 SYLVAN ROAD 8120 18.0 9.2 196 28.6 18.0 159 TIMBER CREEK 7950 6.6 6.3 105 9.3 9.3 100 YOUNTS PEAK 8350 24.6 18.3 134 -M 18.7 * ----- ----- Basin wide percent of average 134 131 SHOSHONE RIVER BLACKWATER 9780 41.3 25.3 163 31.9 20.0 160 EVENING STAR 9200 43.6 30.1 145 43.1 25.2 171 KIRWIN 9550 16.5 11.4 145 17.8 12.7 140 MARQUETTE 8760 12.9 8.6 150 13.8 12.6 110 SYLVAN LAKE 8420 31.7 23.8 133 35.0 21.6 162 SYLVAN ROAD 8120 18.0 9.2 196 28.6 18.0 159 YOUNTS PEAK 8350 24.6 18.3 134 -M 18.7 * ----- ----- Basin wide percent of average 149 155 POWDER-TONGUE BEAR TRAP MEADOW 7900 6.0 5.4 111 11.2 10.0 112 BONE SPRINGS DIV 9350 20.7 18.3 113 19.5 17.4 112 BURGESS JUNCTION 7880 16.0 13.2 121 15.9 13.7 116 CLOUD PEAK RESERVOIR 9860 20.2 17.3 117 17.8 16.2 110 DOME LAKE 8880 15.4 14.9 103 16.9 15.7 108 GRAVE SPRINGS 8550 12.8 -M * 13.1 11.7 112 HANSEN SAWMILL 8760 5.5 7.2 76 9.8 9.7 101 LOST CREEK 8080 18.9 15.5 122 18.0 14.3 126 MIDDLE POWDER 7760 18.5 14.3 129 16.8 14.1 119 POWDER RIVER PASS 9480 -M 11.0 * 15.5 14.0 111 SUCKER CREEK 8880 17.4 13.6 128 18.3 15.7 117 TIE CREEK 6870 6.8 -M * 14.9 13.1 114 ----- ----- Basin wide percent of average 116 113 BELLE FOURCHE BLIND PARK 6890 8.4 10.5 80 17.8 12.9 138 NORTH RAPID CREEK 6130 10.7 -M * 16.4 -M * WARREN PEAK 6520 20.3 10.5 193 -M 9.8 * ----- ----- Basin wide percent of average 137 138* UPPER N. PLATTE RIVER COLUMBINE 9400 28.7 23.1 124 35.2 27.3 129 DIVIDE PEAK 8800 27.5 20.4 135 27.4 26.3 104 ELK RIVER 8700 27.7 18.0 154 28.1 21.4 131 JOE WRIGHT 10120 31.4 24.5 128 33.6 29.1 115 NORTH FRENCH CREEK 10100 37.8 28.9 131 32.2 27.0 119 OLD BATTLE 10000 44.4 37.2 119 41.8 34.4 122 SOUTH BRUSH CREEK 8400 11.9 11.7 102 19.4 19.6 99 TOWER 10500 58.8 50.2 117 54.1 41.6 130 WEBBER SPRINGS 9200 32.0 27.1 118 39.0 29.3 133 WILLOW CREEK PASS 9540 22.6 13.5 167 18.4 14.7 125 ----- ----- Basin wide percent of average 127 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 39.8 28.9 138 31.5 22.8 138 CASPER MTN. 7900 23.6 18.3 129 23.2 17.7 131 CHRISTINA LAKE 9980 21.1 17.4 121 24.9 19.3 129 DEADMAN HILL 10220 20.2 18.5 109 21.4 20.1 106 LAPRELE CREEK 8320 13.7 7.9 173 16.3 14.0 116 RENO HILL 8400 24.1 14.3 169 23.3 21.7 107 ROACH 9700 25.6 18.1 141 25.0 24.7 101 SAND LAKE 10080 41.8 36.5 115 32.9 23.8 138 SOUTH PASS 9040 25.9 17.9 145 26.6 19.8 134 WINDY PEAK 7840 8.4 8.5 99 13.2 11.6 114 ----- ----- Basin wide percent of average 131 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.4 7.5 125 30.4 17.8 171 DIVIDE PEAK 8800 27.5 20.4 135 27.4 26.3 104 OLD BATTLE 10000 44.4 37.2 119 41.8 34.4 122 SANDSTONE RS 8150 15.1 12.2 124 23.6 22.0 107 WHISKEY PARK 8950 40.9 30.1 136 36.7 32.6 113 ----- ----- Basin wide percent of average 128 120 UPPER GREEN RIVER BIG SANDY OPENING 9100 19.1 14.6 131 18.3 18.1 101 BLIND BULL SUM 8650 43.1 26.3 164 35.3 26.4 134 EAST RIM DIVIDE 7930 17.1 14.9 115 18.2 16.9 108 ELKHART PARK G.S. 9400 18.7 14.4 130 19.5 17.8 110 GROS VENTRE SUMMIT 8775 23.2 14.8 157 22.5 17.7 127 KENDALL R.S. 7740 21.0 11.7 179 24.6 17.2 143 LOOMIS PARK 8240 -M 15.9 * 28.6 20.9 137 NEW FORK LAKE 8340 13.6 9.8 139 14.0 16.0 88 SNIDER BASIN 8250 21.7 14.1 154 21.0 16.8 125 SPRING CREEK DIVIDE 9000 39.9 29.5 135 35.3 30.2 117 TRIPLE PEAK 8500 34.9 25.8 135 41.7 34.2 122 ----- ----- Basin wide percent of average 143 120 LOWER GREEN RIVER HAMS FORK 7840 13.2 5.7 232 17.0 14.8 115 HEWINTA 9500 9.9 6.9 143 15.8 15.6 101 HICKERSON PARK 9150 11.4 4.5 253 11.9 11.6 103 HOLE-IN-ROCK 9150 9.5 4.0 238 12.2 11.6 105 INDIAN CREEK 9425 42.0 29.6 142 34.4 28.6 120 KELLEY R.S. 8180 23.2 16.1 144 32.5 20.8 156 STEEL CREEK PARK 10100 18.5 18.5 100 18.1 15.3 118 ----- ----- Basin wide percent of average 150 120 UPPER BEAR RIVER BUG LAKE 7950 32.8 17.8 184 31.7 21.9 145 HAYDEN FORK 9400 15.5 8.4 185 27.4 22.1 124 KELLEY R.S. 8180 23.2 16.1 144 32.5 20.8 156 LILY LAKE 9050 17.2 10.5 164 21.5 17.3 124 MONTE CRISTO 8960 39.9 27.6 145 35.6 29.2 122 SALT RIVER SUMMIT 7600 20.9 12.1 173 25.4 18.8 135 TRIAL LAKE 9960 36.9 24.9 148 36.6 27.3 134 ----- ----- Basin wide percent of average 159 134 ----------------------------------------------------------------------------- -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.