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: MAY 20 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.4 3.4 306 39.2 26.9 146 COTTONWOOD CREEK 7600 16.6 9.9 168 40.1 30.0 134 GRANITE CREEK 6770 14.3 5.7 251 35.8 28.6 125 GRASSY LAKE 7265 29.2 22.7 129 61.7 44.6 138 GROS VENTRE SUMMIT 8775 13.8 7.1 194 23.4 19.3 121 LEWIS LAKE DIVIDE 7860 40.2 26.7 151 64.4 45.4 142 PHILLIPS BENCH 8200 33.1 23.0 144 51.3 35.7 144 SALT RIVER SUMMIT 7600 1.7 .0 * 27.1 20.5 132 SNAKE RIVER STATION 6920 .9 8.1 11 41.4 31.3 132 SPRING CREEK DIVIDE 9000 27.8 23.9 116 37.6 32.6 115 THUMB DIVIDE 7980 13.5 7.9 171 37.9 25.1 151 TOGWOTEE PASS 9580 28.7 25.3 113 40.2 34.0 118 TWO OCEAN PLATEAU 9360 42.0 25.2 167 -M 37.0 * WILLOW CREEK 8450 30.3 25.3 120 53.8 38.5 140 ----- ----- Basin wide percent of average 140 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 23.3 * 35.4 23.5 151 BLACK BEAR 7950 -M 34.2 * -M 49.0 * CANYON 7940 9.4 5.0 188 29.9 17.9 167 FISHER CREEK 9100 53.8 35.7 151 -M 45.1 * MADISON PLATEAU 7750 26.6 15.5 172 46.5 32.0 145 NORTHEAST ENTRANCE 7350 .7 1.9 37 23.6 15.5 152 PARKER PEAK 9400 30.0 21.5 140 -M 20.2 * SYLVAN LAKE 8420 -M 18.7 * 37.5 24.8 151 THUMB DIVIDE 7980 13.5 7.9 171 37.9 25.1 151 TWO OCEAN PLATEAU 9360 42.0 25.2 167 -M 37.0 * WHISKEY CREEK 6800 11.7 7.1 165 35.5 26.6 133 WHITE MILL 8700 35.4 23.3 152 -M 35.1 * WOLVERINE 7650 -M 2.1 * 19.4 17.0 114 ----- ----- Basin wide percent of average 156 146 WIND RIVER BURROUGHS CREEK 8750 14.4 5.5 262 29.3 21.3 138 CHRISTINA LAKE 9980 16.8 15.0 112 27.9 22.2 126 COLD SPRINGS 9630 -M 2.1 * 16.9 14.9 113 HOBBS PARK 10100 17.5 14.7 119 19.7 19.5 101 LITTLE WARM 9620 7.1 4.0 178 25.7 18.1 142 SOUTH PASS 9040 17.6 14.6 121 30.3 22.7 133 ST. LAWRENCE ALT 8620 -M 1.7 * 16.5 13.9 119 TOGWOTEE PASS 9580 28.7 25.3 113 40.2 34.0 118 TOWNSEND CREEK 8700 1.6 4.8 33 18.5 17.4 106 ----- ----- Basin wide percent of average 124 122 BIGHORN BASIN BALD MTN. 9375 21.4 22.7 94 23.0 23.6 97 BEAR TRAP MEADOW 7900 .1 1.0 10 13.4 12.6 106 BLACKWATER 9780 -M 23.0 * 34.6 22.7 152 BONE SPRINGS DIV 9350 18.3 14.1 130 21.9 20.6 106 EVENING STAR 9200 -M 28.9 * 46.9 28.4 165 GRAVE SPRINGS 8550 3.9 -M * 14.9 14.7 101 KIRWIN 9550 8.8 8.6 102 20.5 15.1 136 LOST CREEK 8080 16.3 11.3 144 20.9 17.3 121 MARQUETTE 8760 7.5 6.6 114 16.8 15.8 106 MIDDLE POWDER 7760 9.9 10.6 93 19.1 16.9 113 OWL CREEK 8975 .2 .7 29 9.7 9.7 100 POWDER RIVER PASS 9480 11.5 4.8 240 19.0 16.8 113 SHELL CREEK 9580 15.0 15.3 98 19.8 18.3 108 SYLVAN LAKE 8420 -M 18.7 * 37.5 24.8 151 SYLVAN ROAD 8120 -M 3.1 * 30.6 20.6 149 TIMBER CREEK 7950 .1 1.8 6 11.6 12.3 94 YOUNTS PEAK 8350 19.0 13.8 138 -M 21.1 * ----- ----- Basin wide percent of average 115 124 SHOSHONE RIVER BLACKWATER 9780 -M 23.0 * 34.6 22.7 152 EVENING STAR 9200 -M 28.9 * 46.9 28.4 165 KIRWIN 9550 8.8 8.6 102 20.5 15.1 136 MARQUETTE 8760 7.5 6.6 114 16.8 15.8 106 SYLVAN LAKE 8420 -M 18.7 * 37.5 24.8 151 SYLVAN ROAD 8120 -M 3.1 * 30.6 20.6 149 YOUNTS PEAK 8350 19.0 13.8 138 -M 21.1 * ----- ----- Basin wide percent of average 122* 147 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 1.0 10 13.4 12.6 106 BONE SPRINGS DIV 9350 18.3 14.1 130 21.9 20.6 106 BURGESS JUNCTION 7880 10.6 8.5 125 18.3 16.4 112 CLOUD PEAK RESERVOIR 9860 17.7 13.8 128 21.3 19.7 108 DOME LAKE 8880 9.2 8.4 110 20.5 18.7 110 GRAVE SPRINGS 8550 3.9 -M * 14.9 14.7 101 HANSEN SAWMILL 8760 .0 3.1 0 12.8 12.0 107 LOST CREEK 8080 16.3 11.3 144 20.9 17.3 121 MIDDLE POWDER 7760 9.9 10.6 93 19.1 16.9 113 POWDER RIVER PASS 9480 11.5 4.8 240 19.0 16.8 113 SUCKER CREEK 8880 13.6 8.6 158 22.5 19.0 118 TIE CREEK 6870 .1 -M * 18.2 15.8 115 ----- ----- Basin wide percent of average 127 111 BELLE FOURCHE BLIND PARK 6890 .0 3.2 0 20.2 16.5 122 NORTH RAPID CREEK 6130 .0 -M * 18.6 -M * WARREN PEAK 6520 7.0 3.3 212 -M 12.1 * ----- ----- Basin wide percent of average 108 122* UPPER N. PLATTE RIVER COLUMBINE 9400 10.0 10.7 93 38.7 29.8 130 DIVIDE PEAK 8800 10.1 9.7 104 29.6 29.4 101 ELK RIVER 8700 7.3 6.1 120 31.1 23.6 132 JOE WRIGHT 10120 25.0 21.8 115 38.0 33.1 115 NORTH FRENCH CREEK 10100 30.9 24.8 125 36.7 30.6 120 OLD BATTLE 10000 43.2 33.1 131 46.7 38.1 123 SOUTH BRUSH CREEK 8400 .0 4.5 0 22.2 22.3 100 TOWER 10500 58.3 48.9 119 59.8 47.0 127 WEBBER SPRINGS 9200 20.7 17.5 118 42.7 32.5 131 WILLOW CREEK PASS 9540 15.7 8.2 191 20.5 17.2 119 ----- ----- Basin wide percent of average 119 121 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 26.4 21.3 124 35.1 25.8 136 CASPER MTN. 7900 14.3 8.9 161 27.6 21.3 130 CHRISTINA LAKE 9980 16.8 15.0 112 27.9 22.2 126 DEADMAN HILL 10220 17.6 16.1 109 24.8 23.2 107 LAPRELE CREEK 8320 .0 2.7 0 18.6 16.8 111 RENO HILL 8400 13.4 6.9 194 26.9 23.6 114 ROACH 9700 17.0 13.5 126 28.2 28.5 99 SAND LAKE 10080 41.0 32.2 127 36.8 27.0 136 SOUTH PASS 9040 17.6 14.6 121 30.3 22.7 133 WINDY PEAK 7840 .2 2.5 8 14.4 14.3 101 ----- ----- Basin wide percent of average 123 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * -M 20.0 * DIVIDE PEAK 8800 10.1 9.7 104 29.6 29.4 101 OLD BATTLE 10000 43.2 33.1 131 46.7 38.1 123 SANDSTONE RS 8150 .0 1.6 0 26.4 24.8 106 WHISKEY PARK 8950 34.0 21.4 159 41.2 36.6 113 ----- ----- Basin wide percent of average 133 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 2.7 6.9 39 19.8 19.8 100 BLIND BULL SUM 8650 45.2 20.6 219 37.2 28.5 131 EAST RIM DIVIDE 7930 6.9 11.0 63 18.8 18.5 102 ELKHART PARK G.S. 9400 7.8 8.2 95 21.3 19.4 110 GROS VENTRE SUMMIT 8775 13.8 7.1 194 23.4 19.3 121 KENDALL R.S. 7740 3.5 .0 * 25.2 18.9 133 LOOMIS PARK 8240 -M 8.0 * 30.1 22.9 131 NEW FORK LAKE 8340 .1 4.4 2 16.1 17.6 91 SNIDER BASIN 8250 4.3 6.0 72 21.8 18.4 118 SPRING CREEK DIVIDE 9000 27.8 23.9 116 37.6 32.6 115 TRIPLE PEAK 8500 19.9 19.3 103 44.0 37.3 118 ----- ----- Basin wide percent of average 120 117 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.0 16.2 117 HEWINTA 9500 .0 .0 100* 17.3 18.0 96 HICKERSON PARK 9150 .0 .4 0* 12.5 14.1 89 HOLE-IN-ROCK 9150 .1 .4 25* 12.9 14.1 91 INDIAN CREEK 9425 30.0 22.7 132 37.0 31.1 119 KELLEY R.S. 8180 7.3 7.1 103 35.1 22.8 154 STEEL CREEK PARK 10100 13.5 15.2 89 19.9 18.4 108 ----- ----- Basin wide percent of average 111* 114 UPPER BEAR RIVER BUG LAKE 7950 17.7 7.8 227 34.3 24.0 143 HAYDEN FORK 9400 .4 .5 80* 30.0 25.0 120 KELLEY R.S. 8180 7.3 7.1 103 35.1 22.8 154 LILY LAKE 9050 .2 4.3 5 23.8 19.9 120 MONTE CRISTO 8960 25.5 18.3 139 39.3 32.4 121 SALT RIVER SUMMIT 7600 1.7 .0 * 27.1 20.5 132 TRIAL LAKE 9960 23.7 18.4 129 39.2 30.4 129 ----- ----- Basin wide percent of average 133 131 ----------------------------------------------------------------------------- -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.