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 FRIDAY: MAY 16 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.9 4.5 309 39.0 26.5 147 COTTONWOOD CREEK 7600 21.1 13.2 160 39.8 29.6 134 GRANITE CREEK 6770 16.7 7.0 239 35.7 28.3 126 GRASSY LAKE 7265 33.8 26.3 129 61.3 44.0 139 GROS VENTRE SUMMIT 8775 16.9 9.5 178 23.2 19.1 121 LEWIS LAKE DIVIDE 7860 45.4 29.0 157 63.9 44.8 143 PHILLIPS BENCH 8200 36.4 24.8 147 51.0 35.3 144 SALT RIVER SUMMIT 7600 6.9 .0 * 26.7 20.3 132 SNAKE RIVER STATION 6920 6.3 10.8 58 40.9 30.9 132 SPRING CREEK DIVIDE 9000 30.1 25.6 118 37.4 32.3 116 THUMB DIVIDE 7980 17.7 10.5 169 37.1 24.8 150 TOGWOTEE PASS 9580 31.5 25.9 122 39.9 33.5 119 TWO OCEAN PLATEAU 9360 43.9 26.1 168 -M 36.5 * WILLOW CREEK 8450 34.9 27.3 128 53.5 38.0 141 ----- ----- Basin wide percent of average 145 135 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 -M 24.6 * 35.4 23.0 154 BLACK BEAR 7950 -M 36.4 * -M 48.5 * CANYON 7940 12.7 6.2 205 29.6 17.6 168 FISHER CREEK 9100 53.7 37.1 145 -M 44.5 * MADISON PLATEAU 7750 30.5 18.2 168 46.2 31.5 147 NORTHEAST ENTRANCE 7350 .7 2.5 28 23.3 15.2 153 PARKER PEAK 9400 33.0 22.5 147 -M 19.8 * SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154 THUMB DIVIDE 7980 17.7 10.5 169 37.1 24.8 150 TWO OCEAN PLATEAU 9360 43.9 26.1 168 -M 36.5 * WHISKEY CREEK 6800 14.8 9.0 164 35.2 26.2 134 WHITE MILL 8700 37.7 24.6 153 -M 34.5 * WOLVERINE 7650 -M 2.8 * 19.2 16.6 116 ----- ----- Basin wide percent of average 156 147 WIND RIVER BURROUGHS CREEK 8750 17.5 6.6 265 29.0 20.9 139 CHRISTINA LAKE 9980 19.0 16.7 114 27.8 21.7 128 COLD SPRINGS 9630 -M 2.7 * 16.7 14.6 114 HOBBS PARK 10100 19.9 16.5 121 19.7 19.0 104 LITTLE WARM 9620 10.2 5.1 200 24.6 17.8 138 SOUTH PASS 9040 20.4 16.1 127 30.3 22.2 136 ST. LAWRENCE ALT 8620 2.7 2.3 117 16.4 13.6 121 TOGWOTEE PASS 9580 31.5 25.9 122 39.9 33.5 119 TOWNSEND CREEK 8700 5.8 5.8 100 18.4 17.0 108 ----- ----- Basin wide percent of average 134 124 BIGHORN BASIN BALD MTN. 9375 23.6 24.1 98 23.0 23.0 100 BEAR TRAP MEADOW 7900 .1 1.3 8 13.2 12.2 108 BLACKWATER 9780 39.7 24.4 163 34.4 22.2 155 BONE SPRINGS DIV 9350 20.3 16.1 126 21.4 20.1 106 EVENING STAR 9200 40.2 30.0 134 46.7 27.8 168 GRAVE SPRINGS 8550 7.4 -M * 14.8 14.2 104 KIRWIN 9550 11.7 9.8 119 20.4 14.7 139 LOST CREEK 8080 18.1 13.1 138 20.6 16.8 123 MARQUETTE 8760 9.7 7.4 131 16.4 15.3 107 MIDDLE POWDER 7760 12.5 13.3 94 19.0 16.4 116 OWL CREEK 8975 .2 .9 22 9.6 9.4 102 POWDER RIVER PASS 9480 13.0 5.9 220 18.0 16.4 110 SHELL CREEK 9580 16.1 16.7 96 19.6 17.8 110 SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154 SYLVAN ROAD 8120 -M 3.8 * 30.3 20.1 151 TIMBER CREEK 7950 .1 2.4 4 11.5 11.8 97 YOUNTS PEAK 8350 21.5 15.4 140 -M 20.8 * ----- ----- Basin wide percent of average 125 126 SHOSHONE RIVER BLACKWATER 9780 39.7 24.4 163 34.4 22.2 155 EVENING STAR 9200 40.2 30.0 134 46.7 27.8 168 KIRWIN 9550 11.7 9.8 119 20.4 14.7 139 MARQUETTE 8760 9.7 7.4 131 16.4 15.3 107 SYLVAN LAKE 8420 -M 20.2 * 37.2 24.2 154 SYLVAN ROAD 8120 -M 3.8 * 30.3 20.1 151 YOUNTS PEAK 8350 21.5 15.4 140 -M 20.8 * ----- ----- Basin wide percent of average 141 149 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 1.3 8 13.2 12.2 108 BONE SPRINGS DIV 9350 20.3 16.1 126 21.4 20.1 106 BURGESS JUNCTION 7880 12.4 10.6 117 18.0 16.0 112 CLOUD PEAK RESERVOIR 9860 19.9 15.6 128 20.9 19.1 109 DOME LAKE 8880 11.6 9.9 117 19.8 18.2 109 GRAVE SPRINGS 8550 7.4 -M * 14.8 14.2 104 HANSEN SAWMILL 8760 .0 3.8 0 12.2 11.6 105 LOST CREEK 8080 18.1 13.1 138 20.6 16.8 123 MIDDLE POWDER 7760 12.5 13.3 94 19.0 16.4 116 POWDER RIVER PASS 9480 13.0 5.9 220 18.0 16.4 110 SUCKER CREEK 8880 15.7 10.1 155 21.9 18.4 119 TIE CREEK 6870 .2 -M * 17.9 15.3 117 ----- ----- Basin wide percent of average 124 112 BELLE FOURCHE BLIND PARK 6890 -M 4.3 * 19.8 15.9 125 NORTH RAPID CREEK 6130 .7 -M * 18.6 -M * WARREN PEAK 6520 11.7 4.3 272 -M 11.8 * ----- ----- Basin wide percent of average 272* 125* UPPER N. PLATTE RIVER COLUMBINE 9400 15.0 13.4 112 38.6 29.5 131 DIVIDE PEAK 8800 15.8 11.9 133 29.8 29.0 103 ELK RIVER 8700 12.9 8.0 161 30.8 23.3 132 JOE WRIGHT 10120 32.6 23.3 140 37.9 32.5 117 NORTH FRENCH CREEK 10100 34.9 26.3 133 36.5 30.1 121 OLD BATTLE 10000 44.8 36.1 124 46.6 37.6 124 SOUTH BRUSH CREEK 8400 .0 5.6 0 21.8 21.9 100 TOWER 10500 65.3 50.4 130 59.7 46.2 129 WEBBER SPRINGS 9200 26.2 19.9 132 42.6 32.1 133 WILLOW CREEK PASS 9540 19.0 10.2 186 20.5 16.8 122 ----- ----- Basin wide percent of average 130 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 31.2 24.2 129 34.9 25.4 137 CASPER MTN. 7900 18.2 10.7 170 27.5 20.8 132 CHRISTINA LAKE 9980 19.0 16.7 114 27.8 21.7 128 DEADMAN HILL 10220 19.7 18.1 109 24.8 22.8 109 LAPRELE CREEK 8320 1.8 3.3 55 18.4 16.3 113 RENO HILL 8400 17.1 8.3 206 26.8 23.3 115 ROACH 9700 21.0 15.5 135 28.1 27.9 101 SAND LAKE 10080 44.7 34.8 128 36.8 26.5 139 SOUTH PASS 9040 20.4 16.1 127 30.3 22.2 136 WINDY PEAK 7840 .2 3.3 6 14.5 13.9 104 ----- ----- Basin wide percent of average 128 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * -M 19.7 * DIVIDE PEAK 8800 15.8 11.9 133 29.8 29.0 103 OLD BATTLE 10000 44.8 36.1 124 46.6 37.6 124 SANDSTONE RS 8150 .0 2.2 0 26.4 24.5 108 WHISKEY PARK 8950 36.7 24.5 150 41.1 36.1 114 ----- ----- Basin wide percent of average 130 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.6 9.2 83 19.8 19.5 102 BLIND BULL SUM 8650 45.9 22.0 209 37.1 28.2 132 EAST RIM DIVIDE 7930 9.8 12.4 79 18.7 18.2 103 ELKHART PARK G.S. 9400 10.6 9.5 112 21.1 19.2 110 GROS VENTRE SUMMIT 8775 16.9 9.5 178 23.2 19.1 121 KENDALL R.S. 7740 8.0 .0 * 25.0 18.6 134 LOOMIS PARK 8240 -M 10.6 * 29.8 22.6 132 NEW FORK LAKE 8340 1.4 5.8 24 16.1 17.3 93 SNIDER BASIN 8250 10.0 8.0 125 21.8 18.2 120 SPRING CREEK DIVIDE 9000 30.1 25.6 118 37.4 32.3 116 TRIPLE PEAK 8500 24.1 20.8 116 43.9 36.8 119 ----- ----- Basin wide percent of average 127 118 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.0 16.0 119 HEWINTA 9500 .0 .0 100* 17.1 17.6 97 HICKERSON PARK 9150 .0 .6 0* 12.4 13.7 91 HOLE-IN-ROCK 9150 .1 .5 20* 12.8 13.7 93 INDIAN CREEK 9425 34.1 24.5 139 37.1 30.7 121 KELLEY R.S. 8180 11.6 9.4 123 35.2 22.5 156 STEEL CREEK PARK 10100 16.1 16.3 99 19.9 17.9 111 ----- ----- Basin wide percent of average 121* 116 UPPER BEAR RIVER BUG LAKE 7950 22.1 9.6 230 34.2 23.7 144 HAYDEN FORK 9400 3.0 .7 429* 29.9 24.5 122 KELLEY R.S. 8180 11.6 9.4 123 35.2 22.5 156 LILY LAKE 9050 .7 5.4 13 23.8 19.5 122 MONTE CRISTO 8960 31.0 21.2 146 39.2 31.9 123 SALT RIVER SUMMIT 7600 6.9 .0 * 26.7 20.3 132 TRIAL LAKE 9960 27.7 20.5 135 38.9 29.9 130 ----- ----- Basin wide percent of average 144 132 ----------------------------------------------------------------------------- -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.