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: MAY 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 8.3 2.8 296 39.4 27.0 146 COTTONWOOD CREEK 7600 14.9 8.2 182 40.7 30.2 135 GRANITE CREEK 6770 12.1 5.0 242 35.9 28.8 125 GRASSY LAKE 7265 26.7 20.9 128 62.1 44.9 138 GROS VENTRE SUMMIT 8775 12.0 5.9 203 23.5 19.5 121 LEWIS LAKE DIVIDE 7860 37.4 25.6 146 64.7 45.6 142 PHILLIPS BENCH 8200 31.5 22.1 143 51.7 36.0 144 SALT RIVER SUMMIT 7600 .2 .0 * 27.7 20.7 134 SNAKE RIVER STATION 6920 .2 6.8 3 41.6 31.5 132 SPRING CREEK DIVIDE 9000 26.4 23.1 114 37.9 32.8 116 THUMB DIVIDE 7980 11.2 6.6 170 38.1 25.3 151 TOGWOTEE PASS 9580 28.0 25.0 112 40.3 34.2 118 TWO OCEAN PLATEAU 9360 40.1 24.7 162 -M 37.2 * WILLOW CREEK 8450 27.8 24.3 114 54.9 38.8 141 ----- ----- Basin wide percent of average 138 134 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 22.6 * 35.5 23.8 149 BLACK BEAR 7950 -M 33.1 * -M 49.3 * CANYON 7940 7.7 4.4 175 29.9 18.1 165 FISHER CREEK 9100 48.8 35.1 139 -M 45.5 * MADISON PLATEAU 7750 24.2 14.2 170 46.8 32.2 145 NORTHEAST ENTRANCE 7350 .2 1.6 12 23.6 15.7 150 PARKER PEAK 9400 28.2 21.0 134 28.4 20.4 139 SYLVAN LAKE 8420 -M 17.9 * 37.6 25.0 150 THUMB DIVIDE 7980 11.2 6.6 170 38.1 25.3 151 TWO OCEAN PLATEAU 9360 40.1 24.7 162 -M 37.2 * WHISKEY CREEK 6800 10.0 6.1 164 35.6 26.7 133 WHITE MILL 8700 34.2 22.6 151 36.8 35.3 104 WOLVERINE 7650 .4 1.8 22 19.2 17.2 112 ----- ----- Basin wide percent of average 148 138 WIND RIVER BURROUGHS CREEK 8750 12.6 4.9 257 29.4 21.5 137 CHRISTINA LAKE 9980 15.9 14.1 113 28.0 22.4 125 COLD SPRINGS 9630 .1 1.8 6 16.9 15.1 112 HOBBS PARK 10100 16.1 13.8 117 19.8 19.7 101 LITTLE WARM 9620 4.6 3.5 131 25.8 18.3 141 SOUTH PASS 9040 16.3 13.8 118 30.2 22.9 132 ST. LAWRENCE ALT 8620 .0 1.5 0 16.5 14.1 117 TOGWOTEE PASS 9580 28.0 25.0 112 40.3 34.2 118 TOWNSEND CREEK 8700 .2 4.3 5 18.4 17.6 105 ----- ----- Basin wide percent of average 113 121 BIGHORN BASIN BALD MTN. 9375 20.5 22.0 93 23.0 23.8 97 BEAR TRAP MEADOW 7900 .2 .8 25 13.4 12.8 105 BLACKWATER 9780 -M 22.3 * 34.6 22.9 151 BONE SPRINGS DIV 9350 16.9 13.1 129 22.0 20.9 105 EVENING STAR 9200 34.3 28.3 121 47.0 28.6 164 GRAVE SPRINGS 8550 1.3 -M * 14.9 15.0 99 KIRWIN 9550 7.0 8.0 88 20.5 15.3 134 LOST CREEK 8080 14.4 10.4 138 20.9 17.6 119 MARQUETTE 8760 5.9 6.2 95 16.8 16.1 104 MIDDLE POWDER 7760 7.5 9.3 81 19.3 17.1 113 OWL CREEK 8975 .2 .6 33 9.7 9.9 98 POWDER RIVER PASS 9480 10.1 4.2 240 19.1 17.1 112 SHELL CREEK 9580 14.6 14.6 100 19.8 18.5 107 SYLVAN LAKE 8420 -M 17.9 * 37.6 25.0 150 SYLVAN ROAD 8120 .2 2.8 7 30.6 20.8 147 TIMBER CREEK 7950 .1 1.6 6 11.6 12.6 92 YOUNTS PEAK 8350 17.1 13.0 132 31.0 21.3 146 ----- ----- Basin wide percent of average 110 124 SHOSHONE RIVER BLACKWATER 9780 -M 22.3 * 34.6 22.9 151 EVENING STAR 9200 34.3 28.3 121 47.0 28.6 164 KIRWIN 9550 7.0 8.0 88 20.5 15.3 134 MARQUETTE 8760 5.9 6.2 95 16.8 16.1 104 SYLVAN LAKE 8420 -M 17.9 * 37.6 25.0 150 SYLVAN ROAD 8120 .2 2.8 7 30.6 20.8 147 YOUNTS PEAK 8350 17.1 13.0 132 31.0 21.3 146 ----- ----- Basin wide percent of average 111 145 POWDER-TONGUE BEAR TRAP MEADOW 7900 .2 .8 25 13.4 12.8 105 BONE SPRINGS DIV 9350 16.9 13.1 129 22.0 20.9 105 BURGESS JUNCTION 7880 9.1 7.5 121 18.3 16.6 110 CLOUD PEAK RESERVOIR 9860 16.1 12.9 125 21.3 19.9 107 DOME LAKE 8880 7.5 7.7 97 20.5 19.0 108 GRAVE SPRINGS 8550 1.3 -M * 14.9 15.0 99 HANSEN SAWMILL 8760 .0 2.7 0 12.8 12.1 106 LOST CREEK 8080 14.4 10.4 138 20.9 17.6 119 MIDDLE POWDER 7760 7.5 9.3 81 19.3 17.1 113 POWDER RIVER PASS 9480 10.1 4.2 240 19.1 17.1 112 SUCKER CREEK 8880 12.0 7.8 154 22.6 19.2 118 TIE CREEK 6870 .1 -M * 18.3 16.0 114 ----- ----- Basin wide percent of average 123 110 BELLE FOURCHE BLIND PARK 6890 .0 2.7 0 20.3 16.8 121 NORTH RAPID CREEK 6130 .0 -M * 19.1 -M * WARREN PEAK 6520 3.7 2.7 137 -M 12.3 * ----- ----- Basin wide percent of average 69 121* UPPER N. PLATTE RIVER COLUMBINE 9400 6.7 9.4 71 38.9 30.0 130 DIVIDE PEAK 8800 7.8 8.5 92 29.8 29.7 100 ELK RIVER 8700 4.6 5.1 90 31.1 23.7 131 JOE WRIGHT 10120 22.6 21.0 108 38.1 33.4 114 NORTH FRENCH CREEK 10100 29.3 24.0 122 36.7 30.9 119 OLD BATTLE 10000 41.1 31.6 130 46.9 38.3 122 SOUTH BRUSH CREEK 8400 .0 3.9 0 22.6 22.4 101 TOWER 10500 57.8 48.2 120 60.0 47.4 127 WEBBER SPRINGS 9200 19.2 16.3 118 42.7 32.7 131 WILLOW CREEK PASS 9540 14.2 7.2 197 21.1 17.4 121 ----- ----- Basin wide percent of average 116 120 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.7 19.9 124 35.1 26.0 135 CASPER MTN. 7900 11.6 8.0 145 27.5 21.6 127 CHRISTINA LAKE 9980 15.9 14.1 113 28.0 22.4 125 DEADMAN HILL 10220 16.5 15.1 109 25.1 23.5 107 LAPRELE CREEK 8320 .1 2.4 4 18.6 17.0 109 RENO HILL 8400 10.9 6.3 173 26.8 23.7 113 ROACH 9700 15.2 12.5 122 28.2 28.8 98 SAND LAKE 10080 37.4 31.0 121 36.8 27.2 135 SOUTH PASS 9040 16.3 13.8 118 30.2 22.9 132 WINDY PEAK 7840 .2 2.1 10 14.6 14.6 100 ----- ----- Basin wide percent of average 119 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * -M 20.1 * DIVIDE PEAK 8800 7.8 8.5 92 29.8 29.7 100 OLD BATTLE 10000 41.1 31.6 130 46.9 38.3 122 SANDSTONE RS 8150 .0 1.4 0* 26.4 25.0 106 WHISKEY PARK 8950 -M 19.8 * 41.3 36.9 112 ----- ----- Basin wide percent of average 118* 111 UPPER GREEN RIVER BIG SANDY OPENING 9100 .3 5.8 5 19.8 19.9 99 BLIND BULL SUM 8650 44.0 19.9 221 37.6 28.7 131 EAST RIM DIVIDE 7930 5.4 10.4 52 19.1 18.6 103 ELKHART PARK G.S. 9400 5.8 7.6 76 21.4 19.6 109 GROS VENTRE SUMMIT 8775 12.0 5.9 203 23.5 19.5 121 KENDALL R.S. 7740 .9 .0 * 25.4 19.0 134 LOOMIS PARK 8240 -M 6.6 * 30.3 23.0 132 NEW FORK LAKE 8340 .1 3.6 3 16.0 17.7 90 SNIDER BASIN 8250 1.4 5.0 28 22.0 18.6 118 SPRING CREEK DIVIDE 9000 26.4 23.1 114 37.9 32.8 116 TRIPLE PEAK 8500 17.4 18.5 94 44.4 37.6 118 ----- ----- Basin wide percent of average 113 117 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.2 16.4 117 HEWINTA 9500 .0 .0 100* 17.3 18.1 96 HICKERSON PARK 9150 .0 .4 0* 12.7 14.3 89 HOLE-IN-ROCK 9150 .1 .3 33* 13.3 14.3 93 INDIAN CREEK 9425 28.2 21.8 129 37.2 31.3 119 KELLEY R.S. 8180 4.9 5.9 83 35.5 23.0 154 STEEL CREEK PARK 10100 12.7 14.7 86 20.1 18.6 108 ----- ----- Basin wide percent of average 106* 114 UPPER BEAR RIVER BUG LAKE 7950 14.8 6.9 214 34.7 24.2 143 HAYDEN FORK 9400 .4 .4 100* 30.3 25.2 120 KELLEY R.S. 8180 4.9 5.9 83 35.5 23.0 154 LILY LAKE 9050 .2 3.8 5 24.0 20.1 119 MONTE CRISTO 8960 22.3 16.9 132 39.6 32.6 121 SALT RIVER SUMMIT 7600 .2 .0 * 27.7 20.7 134 TRIAL LAKE 9960 22.4 17.3 129 39.7 30.6 130 ----- ----- Basin wide percent of average 127 131 ----------------------------------------------------------------------------- -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.