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 WEDNESDAY: MAY 28 , 1997 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.0 1.1 364* 40.7 27.6 147 COTTONWOOD CREEK 7600 11.0 3.3 333 41.8 30.7 136 GRANITE CREEK 6770 7.1 3.0 237 37.0 29.4 126 GRASSY LAKE 7265 22.3 15.6 143 63.5 45.7 139 GROS VENTRE SUMMIT 8775 7.8 2.4 325 24.3 19.8 123 LEWIS LAKE DIVIDE 7860 31.4 22.1 142 65.5 46.5 141 PHILLIPS BENCH 8200 27.7 19.4 143 52.7 36.6 144 SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.1 135 SNAKE RIVER STATION 6920 .1 2.7 4 42.4 32.1 132 SPRING CREEK DIVIDE 9000 23.9 20.6 116 38.5 33.4 115 THUMB DIVIDE 7980 6.5 2.6 250 38.8 25.8 150 TOGWOTEE PASS 9580 27.8 24.2 115 41.4 34.9 119 TWO OCEAN PLATEAU 9360 40.1 23.4 171 -M 37.9 * WILLOW CREEK 8450 23.9 21.2 113 56.2 39.5 142 ----- ----- Basin wide percent of average 145 135 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 33.2 20.7 160 36.8 24.5 150 BLACK BEAR 7950 -M 29.7 * -M 50.1 * CANYON 7940 4.3 2.6 165 30.4 18.6 163 FISHER CREEK 9100 48.7 33.0 148 57.8 46.4 125 MADISON PLATEAU 7750 19.7 10.2 193 47.4 32.9 144 NORTHEAST ENTRANCE 7350 .2 .8 25* 24.3 16.2 150 PARKER PEAK 9400 27.3 19.6 139 29.6 21.1 140 SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150 THUMB DIVIDE 7980 6.5 2.6 250 38.8 25.8 150 TWO OCEAN PLATEAU 9360 40.1 23.4 171 -M 37.9 * WHISKEY CREEK 6800 3.7 3.2 116 36.5 27.3 134 WHITE MILL 8700 32.4 20.7 157 37.9 36.1 105 WOLVERINE 7650 .3 .7 43* 20.7 17.7 117 ----- ----- Basin wide percent of average 153 136 WIND RIVER BURROUGHS CREEK 8750 7.3 3.2 228 29.9 22.1 135 CHRISTINA LAKE 9980 14.1 11.6 122 29.0 23.1 126 COLD SPRINGS 9630 .2 .9 22 17.8 15.7 113 HOBBS PARK 10100 15.4 11.1 139 21.2 20.4 104 LITTLE WARM 9620 .4 1.8 22 26.5 18.9 140 SOUTH PASS 9040 -M 11.5 * 31.0 23.6 131 ST. LAWRENCE ALT 8620 .1 .6 17* 17.8 14.5 123 TOGWOTEE PASS 9580 27.8 24.2 115 41.4 34.9 119 TOWNSEND CREEK 8700 .2 2.8 7 20.0 18.2 110 ----- ----- Basin wide percent of average 117 123 BIGHORN BASIN BALD MTN. 9375 19.2 19.9 96 24.0 24.7 97 BEAR TRAP MEADOW 7900 .1 .3 33* 13.9 13.5 103 BLACKWATER 9780 32.2 20.2 159 35.4 23.6 150 BONE SPRINGS DIV 9350 13.0 10.1 129 22.4 21.7 103 EVENING STAR 9200 34.4 26.6 129 48.1 29.4 164 GRAVE SPRINGS 8550 .0 -M * 15.3 15.7 97 KIRWIN 9550 3.0 6.3 48 21.7 15.8 137 LOST CREEK 8080 10.1 7.6 133 21.5 18.3 117 MARQUETTE 8760 3.1 4.9 63 18.3 16.8 109 MIDDLE POWDER 7760 2.6 5.2 50 19.9 17.8 112 OWL CREEK 8975 .2 .3 67* 11.0 10.4 106 POWDER RIVER PASS 9480 7.8 2.5 312 19.8 17.7 112 SHELL CREEK 9580 13.8 12.6 110 20.2 19.3 105 SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150 SYLVAN ROAD 8120 .2 1.7 12 31.5 21.4 147 TIMBER CREEK 7950 .1 .7 14 13.2 13.3 99 YOUNTS PEAK 8350 13.2 10.7 123 31.4 21.9 143 ----- ----- Basin wide percent of average 118 124 SHOSHONE RIVER BLACKWATER 9780 32.2 20.2 159 35.4 23.6 150 EVENING STAR 9200 34.4 26.6 129 48.1 29.4 164 KIRWIN 9550 3.0 6.3 48 21.7 15.8 137 MARQUETTE 8760 3.1 4.9 63 18.3 16.8 109 SYLVAN LAKE 8420 18.2 15.6 117 38.8 25.8 150 SYLVAN ROAD 8120 .2 1.7 12 31.5 21.4 147 YOUNTS PEAK 8350 13.2 10.7 123 31.4 21.9 143 ----- ----- Basin wide percent of average 121 146 POWDER-TONGUE BEAR TRAP MEADOW 7900 .1 .3 33* 13.9 13.5 103 BONE SPRINGS DIV 9350 13.0 10.1 129 22.4 21.7 103 BURGESS JUNCTION 7880 5.8 4.4 132 19.2 17.3 111 CLOUD PEAK RESERVOIR 9860 14.6 10.1 145 22.6 20.8 109 DOME LAKE 8880 4.5 5.4 83 21.0 19.7 107 GRAVE SPRINGS 8550 .0 -M * 15.3 15.7 97 HANSEN SAWMILL 8760 .0 1.6 0 14.2 12.7 112 LOST CREEK 8080 10.1 7.6 133 21.5 18.3 117 MIDDLE POWDER 7760 2.6 5.2 50 19.9 17.8 112 POWDER RIVER PASS 9480 7.8 2.5 312 19.8 17.7 112 SUCKER CREEK 8880 10.1 5.5 184 23.1 20.0 116 TIE CREEK 6870 .1 -M * 19.4 16.6 117 ----- ----- Basin wide percent of average 130 110 BELLE FOURCHE BLIND PARK 6890 .0 1.1 0* 22.1 17.6 126 NORTH RAPID CREEK 6130 .0 -M * 20.7 -M * WARREN PEAK 6520 .1 1.2 8* 18.2 12.9 141 ----- ----- Basin wide percent of average 4* 132 UPPER N. PLATTE RIVER COLUMBINE 9400 2.1 5.4 39 39.8 30.5 130 DIVIDE PEAK 8800 4.8 5.2 92 31.5 30.3 104 ELK RIVER 8700 .0 2.2 0 32.5 24.2 134 JOE WRIGHT 10120 22.3 18.7 119 40.1 34.3 117 NORTH FRENCH CREEK 10100 28.0 21.7 129 38.5 31.7 121 OLD BATTLE 10000 39.0 27.0 144 48.5 39.1 124 SOUTH BRUSH CREEK 8400 .0 2.2 0 23.4 23.0 102 TOWER 10500 59.2 45.9 129 62.2 48.6 128 WEBBER SPRINGS 9200 16.8 12.7 132 43.5 33.3 131 WILLOW CREEK PASS 9540 11.5 4.2 274 22.8 17.9 127 ----- ----- Basin wide percent of average 127 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.0 15.6 141 35.7 26.7 134 CASPER MTN. 7900 7.2 5.3 136 28.4 22.4 127 CHRISTINA LAKE 9980 14.1 11.6 122 29.0 23.1 126 DEADMAN HILL 10220 15.0 12.2 123 26.6 24.1 110 LAPRELE CREEK 8320 .2 1.6 12 19.6 17.7 111 RENO HILL 8400 7.9 4.2 188 28.3 24.1 117 ROACH 9700 12.2 9.5 128 29.4 29.6 99 SAND LAKE 10080 33.3 27.1 123 38.3 27.9 137 SOUTH PASS 9040 -M 11.5 * 31.0 23.6 131 WINDY PEAK 7840 .2 .8 25* 16.4 15.2 108 ----- ----- Basin wide percent of average 128 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .0 * -M 20.6 * DIVIDE PEAK 8800 4.8 5.2 92 31.5 30.3 104 OLD BATTLE 10000 39.0 27.0 144 48.5 39.1 124 SANDSTONE RS 8150 .0 .5 0* 27.5 25.6 107 WHISKEY PARK 8950 37.0 15.1 245 42.4 37.7 112 ----- ----- Basin wide percent of average 169 113 UPPER GREEN RIVER BIG SANDY OPENING 9100 .0 2.3 0 20.6 20.3 101 BLIND BULL SUM 8650 40.5 17.8 228 38.3 29.2 131 EAST RIM DIVIDE 7930 1.9 8.3 23 20.0 19.0 105 ELKHART PARK G.S. 9400 .5 5.7 9 22.0 19.9 111 GROS VENTRE SUMMIT 8775 7.8 2.4 325 24.3 19.8 123 KENDALL R.S. 7740 .0 .0 100* 26.2 19.4 135 LOOMIS PARK 8240 -M 2.7 * 31.2 23.5 133 NEW FORK LAKE 8340 .0 1.5 0 16.4 18.1 91 SNIDER BASIN 8250 .0 2.0 0 22.4 18.9 119 SPRING CREEK DIVIDE 9000 23.9 20.6 116 38.5 33.4 115 TRIPLE PEAK 8500 13.9 16.2 86 45.5 38.3 119 ----- ----- Basin wide percent of average 115 118 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 19.8 16.7 119 HEWINTA 9500 .0 .0 100* 17.9 18.7 96 HICKERSON PARK 9150 .0 .1 0* 13.3 14.8 90 HOLE-IN-ROCK 9150 .0 .2 0* 14.1 14.8 95 INDIAN CREEK 9425 25.5 19.2 133 37.8 31.9 118 KELLEY R.S. 8180 1.0 2.4 42 36.2 23.5 154 STEEL CREEK PARK 10100 11.9 13.1 91 20.9 19.3 108 ----- ----- Basin wide percent of average 110* 115 UPPER BEAR RIVER BUG LAKE 7950 10.4 4.1 254 35.5 24.6 144 HAYDEN FORK 9400 .4 .2 200* 31.4 25.8 122 KELLEY R.S. 8180 1.0 2.4 42 36.2 23.5 154 LILY LAKE 9050 .1 2.1 5 24.9 20.7 120 MONTE CRISTO 8960 18.4 12.6 146 40.8 33.3 123 SALT RIVER SUMMIT 7600 .0 .0 100* 28.5 21.1 135 TRIAL LAKE 9960 20.5 14.1 145 40.7 31.3 130 ----- ----- Basin wide percent of average 143 132 ----------------------------------------------------------------------------- -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.