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 MONDAY: MAY 31 , 1999 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .3 0* 31.4 27.9 113 COTTONWOOD CREEK 7600 8.6 .0 956* 37.3 31.2 120 GRANITE CREEK 6770 1.7 2.2 77 28.4 29.9 95 GRASSY LAKE 7265 24.0 13.0 187 51.3 46.3 111 GROS VENTRE SUMMIT 8775 7.8 .6 1284* 20.7 20.2 103 LEWIS LAKE DIVIDE 7860 27.5 20.4 135 47.3 47.0 101 PHILLIPS BENCH 8200 21.0 18.2 117 38.2 37.0 103 SALT RIVER SUMMIT 7600 .3 .0 * 23.7 21.4 111 SNAKE RIVER STATION 6920 .0 .7 0* 31.7 32.5 98 SPRING CREEK DIVIDE 9000 25.0 19.5 129 36.8 33.8 109 THUMB DIVIDE 7980 4.3 .7 615* 29.0 26.2 112 TOGWOTEE PASS 9580 -M 23.9 * 36.3 35.3 104 TWO OCEAN PLATEAU 9360 34.8 22.9 153 38.3 38.3 100 WILLOW CREEK 8450 17.4 19.9 88 50.0 39.9 126 ----- ----- Basin wide percent of average 145 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 23.2 19.9 117 28.9 24.9 117 BLACK BEAR 7950 50.0 28.2 178 62.2 50.5 123 CANYON 7940 2.2 1.9 117 23.9 18.9 126 FISHER CREEK 9100 36.9 32.2 115 45.3 46.9 97 MADISON PLATEAU 7750 -M 8.2 * 40.5 33.3 122 NORTHEAST ENTRANCE 7350 .0 .5 0* 18.9 16.5 115 PARKER PEAK 9400 17.7 18.9 94 -M 21.4 * SYLVAN LAKE 8420 -M 14.5 * 37.3 26.2 142 THUMB DIVIDE 7980 4.3 .7 615* 29.0 26.2 112 TWO OCEAN PLATEAU 9360 34.8 22.9 153 38.3 38.3 100 WHISKEY CREEK 6800 7.1 1.7 418* 31.4 27.7 114 WHITE MILL 8700 25.2 19.9 127 31.4 36.5 86 WOLVERINE 7650 .0 .3 0* 16.4 18.2 91 ----- ----- Basin wide percent of average 138 111 WIND RIVER BURROUGHS CREEK 8750 10.4 2.3 448 24.9 22.5 111 COLD SPRINGS 9630 9.0 .5 1781* 25.7 16.2 160 DEER PARK 9700 20.4 -M * 34.3 -M * HOBBS PARK 10100 22.4 9.9 228 31.2 20.9 150 LITTLE WARM 9620 8.7 1.0 870* 26.2 19.4 136 SOUTH PASS 9040 15.2 10.5 147 31.4 23.9 131 ST. LAWRENCE ALT 8620 .0 .3 0* 22.4 14.9 152 TOGWOTEE PASS 9580 -M 23.9 * 36.3 35.3 104 TOWNSEND CREEK 8700 6.0 2.2 286 26.9 18.7 145 ----- ----- Basin wide percent of average 271* 132 BIGHORN BASIN BALD MTN. 9375 21.2 18.9 113 26.5 25.2 106 BEAR TRAP MEADOW 7900 .0 .2 0* 19.2 13.9 140 BLACKWATER 9780 30.9 19.2 161 32.2 23.9 135 BONE SPRINGS DIV 9350 16.4 8.7 188 26.9 22.2 122 EVENING STAR 9200 30.9 25.9 120 42.4 29.9 143 GRAVE SPRINGS 8550 .0 2.7 0 19.9 16.2 123 KIRWIN 9550 11.9 5.5 219 22.7 16.2 141 MARQUETTE 8760 13.1 4.5 298 22.5 17.2 131 MIDDLE POWDER 7760 4.6 3.3 144 23.2 18.2 128 OWL CREEK 8975 .5 .3 250* 16.9 10.7 158 POWDER RIVER PASS 9480 4.0 1.7 250 23.5 18.2 130 SHELL CREEK 9580 12.5 11.6 108 21.9 19.7 111 SYLVAN LAKE 8420 -M 14.5 * 37.3 26.2 142 SYLVAN ROAD 8120 .0 1.2 0* 23.9 21.7 110 TIMBER CREEK 7950 2.2 .5 525* 19.4 13.7 142 YOUNTS PEAK 8350 14.4 9.5 151 23.7 22.4 106 ----- ----- Basin wide percent of average 144 128 SHOSHONE RIVER BLACKWATER 9780 30.9 19.2 161 32.2 23.9 135 EVENING STAR 9200 30.9 25.9 120 42.4 29.9 143 KIRWIN 9550 11.9 5.5 219 22.7 16.2 141 MARQUETTE 8760 13.1 4.5 298 22.5 17.2 131 SYLVAN LAKE 8420 -M 14.5 * 37.3 26.2 142 SYLVAN ROAD 8120 .0 1.2 0* 23.9 21.7 110 YOUNTS PEAK 8350 14.4 9.5 151 23.7 22.4 106 ----- ----- Basin wide percent of average 155 130 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 .2 0* 19.2 13.9 140 BIG GOOSE 7990 .0 -M * 19.9 -M * BONE SPRINGS DIV 9350 16.4 8.7 188 26.9 22.2 122 BURGESS JUNCTION 7880 3.7 2.9 125 19.2 17.7 110 CLOUD PEAK RESERVOIR 9860 16.0 8.9 181 26.5 21.2 126 DOME LAKE 8880 -M 4.3 * 18.7 20.2 93 GRAVE SPRINGS 8550 .0 2.7 0 19.9 16.2 123 HANSEN SAWMILL 8760 .0 1.0 0 18.4 13.0 141 MIDDLE POWDER 7760 4.6 3.3 144 23.2 18.2 128 POWDER RIVER PASS 9480 4.0 1.7 250 23.5 18.2 130 SUCKER CREEK 8880 7.0 4.5 157 23.5 20.4 116 TIE CREEK 6870 .0 -M * 19.9 16.9 118 ----- ----- Basin wide percent of average 155 121 BELLE FOURCHE BLIND PARK 6890 .0 .3 0* 21.5 18.2 119 NORTH RAPID CREEK 6130 .0 -M * 18.9 -M * WARREN PEAK 6520 .0 .5 0* -M 13.4 * ----- ----- Basin wide percent of average 0* 119* UPPER N. PLATTE RIVER COLUMBINE 9400 .0 3.4 0 30.5 30.9 99 DIVIDE PEAK 8800 .3 3.5 9 32.9 30.7 108 ELK RIVER 8700 .0 .7 0* 30.7 24.5 125 JOE WRIGHT 10120 17.0 17.5 98 35.5 34.8 103 NORTH FRENCH CREEK 10100 34.0 20.7 166 40.3 32.3 126 OLD BATTLE 10000 32.4 24.9 131 49.5 39.5 126 SOUTH BRUSH CREEK 8400 6.8 1.4 524* 27.4 23.4 118 TOWER 10500 45.3 44.8 101 51.4 49.3 105 WEBBER SPRINGS 9200 5.8 11.0 52 35.8 33.8 106 WILLOW CREEK PASS 9540 3.8 2.8 136 18.0 18.4 99 ----- ----- Basin wide percent of average 112 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 17.9 13.6 132 34.3 27.0 128 CASPER MTN. 7900 .3 4.0 6 24.7 22.9 108 DEADMAN HILL 10220 13.1 10.7 123 25.9 24.5 106 DEER PARK 9700 20.4 -M * 34.3 -M * LAPRELE CREEK 8320 .0 1.2 0 23.4 18.0 131 RENO HILL 8400 .0 3.3 0 27.7 24.4 114 ROACH 9700 -M 8.0 * 27.4 30.2 92 SAND LAKE 10080 46.3 25.4 183 39.9 28.4 141 SOUTH PASS 9040 15.2 10.5 147 31.4 23.9 131 WINDY PEAK 7840 .0 .3 0* 20.5 15.6 132 ----- ----- Basin wide percent of average 135 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 24.0 20.9 115 DIVIDE PEAK 8800 .3 3.5 9 32.9 30.7 108 OLD BATTLE 10000 32.4 24.9 131 49.5 39.5 126 SANDSTONE RS 8150 .0 .3 0* 27.4 26.0 106 WHISKEY PARK 8950 27.5 12.9 215 39.8 38.3 105 ----- ----- Basin wide percent of average 146 112 UPPER GREEN RIVER BIG SANDY OPENING 9100 1.9 .6 317* 20.4 20.7 99 BLIND BULL SUM 8650 28.4 16.9 170 29.2 29.5 99 EAST RIM DIVIDE 7930 5.1 7.5 69 18.9 19.2 98 ELKHART PARK G.S. 9400 4.5 4.8 94 20.7 20.2 102 GROS VENTRE SUMMIT 8775 7.8 .6 1284* 20.7 20.2 103 KENDALL R.S. 7740 .2 .0 * 20.9 19.7 106 LOOMIS PARK 8240 -M .7 * 25.5 23.9 108 NEW FORK LAKE 8340 .0 .5 0* 17.9 18.4 98 SNIDER BASIN 8250 1.4 .5 280* 23.4 19.2 122 SPRING CREEK DIVIDE 9000 25.0 19.5 129 36.8 33.8 109 TRIPLE PEAK 8500 15.0 15.1 99 39.8 38.8 103 ----- ----- Basin wide percent of average 136* 105 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 18.9 16.9 112 HEWINTA 9500 .0 .0 100* 20.7 19.0 109 HICKERSON PARK 9150 .2 .2 100* 16.2 15.2 106 HOLE-IN-ROCK 9150 .0 .3 0* 16.2 15.2 106 INDIAN CREEK 9425 26.7 17.9 150 35.3 32.3 109 KELLEY R.S. 8180 .6 .6 100* 25.2 23.9 106 STEEL CREEK PARK 10100 16.4 12.4 134 24.9 19.7 126 ----- ----- Basin wide percent of average 141* 111 UPPER BEAR RIVER BUG LAKE 7950 5.1 2.8 183 29.9 24.9 120 HAYDEN FORK 9400 .3 .2 300* 29.4 26.2 113 KELLEY R.S. 8180 .6 .6 100* 25.2 23.9 106 LILY LAKE 9050 .6 1.4 47* 26.4 21.2 125 MONTE CRISTO 8960 23.0 10.6 217 38.5 33.7 115 SALT RIVER SUMMIT 7600 .3 .0 * 23.7 21.4 111 TRIAL LAKE 9960 15.1 12.6 120 32.3 31.7 102 ----- ----- Basin wide percent of average 160* 113 ----------------------------------------------------------------------------- -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.