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 15 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 3.3 4.8 69 24.0 26.4 91 COTTONWOOD CREEK 7600 10.6 14.0 76 28.3 29.5 96 GRANITE CREEK 6770 6.0 7.3 82 23.7 28.2 84 GRASSY LAKE 7265 20.0 27.2 74 39.7 43.9 90 GROS VENTRE SUMMIT 8775 8.8 10.1 87 15.9 19.0 84 LEWIS LAKE DIVIDE 7860 21.9 29.6 74 36.5 44.6 82 PHILLIPS BENCH 8200 23.3 25.3 92 30.6 35.2 87 SALT RIVER SUMMIT 7600 4.3 .0 * 22.7 20.2 112 SNAKE RIVER STATION 6920 1.4 11.5 12 25.9 30.8 84 SPRING CREEK DIVIDE 9000 20.4 26.0 78 26.1 32.2 81 THUMB DIVIDE 7980 6.0 11.2 54 21.2 24.7 86 TOGWOTEE PASS 9580 23.6 26.0 91 27.9 33.4 84 TWO OCEAN PLATEAU 9360 27.2 26.3 103 31.4 36.4 86 WILLOW CREEK 8450 17.8 27.8 64 37.4 37.9 99 ----- ----- Basin wide percent of average 77 88 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.0 24.9 68 18.9 22.9 83 BLACK BEAR 7950 35.0 37.0 95 42.0 48.4 87 CANYON 7940 2.8 6.5 43 16.9 17.5 97 FISHER CREEK 9100 27.1 37.4 72 31.7 44.4 71 MADISON PLATEAU 7750 15.5 18.9 82 27.6 31.4 88 NORTHEAST ENTRANCE 7350 .0 2.6 0 13.2 15.1 87 PARKER PEAK 9400 14.4 22.7 63 18.6 19.7 94 SYLVAN LAKE 8420 10.7 20.6 52 23.7 24.1 98 THUMB DIVIDE 7980 6.0 11.2 54 21.2 24.7 86 TWO OCEAN PLATEAU 9360 27.2 26.3 103 31.4 36.4 86 WHISKEY CREEK 6800 8.8 9.5 93 22.8 26.1 87 WHITE MILL 8700 20.3 24.9 82 24.3 34.4 71 WOLVERINE 7650 .0 3.0 0 11.0 16.5 67 ----- ----- Basin wide percent of average 75 84 WIND RIVER BURROUGHS CREEK 8750 12.5 6.9 181 20.2 20.8 97 COLD SPRINGS 9630 6.5 2.8 232 16.3 14.5 112 DEER PARK 9700 -M -M * 26.1 -M * HOBBS PARK 10100 20.1 16.9 119 20.4 18.9 108 LITTLE WARM 9620 6.7 5.4 124 17.1 17.7 97 SOUTH PASS 9040 13.6 16.5 82 22.5 22.1 102 ST. LAWRENCE ALT 8620 4.7 2.4 196 14.8 13.5 110 TOGWOTEE PASS 9580 23.6 26.0 91 27.9 33.4 84 TOWNSEND CREEK 8700 8.1 6.1 133 18.5 16.9 109 ----- ----- Basin wide percent of average 115 100 BIGHORN BASIN BALD MTN. 9375 19.3 24.4 79 20.5 22.8 90 BEAR TRAP MEADOW 7900 .0 1.4 0 13.1 12.1 108 BLACKWATER 9780 20.5 24.8 83 21.2 22.1 96 BONE SPRINGS DIV 9350 15.5 16.6 93 20.0 20.0 100 EVENING STAR 9200 19.1 30.3 63 28.0 27.7 101 GRAVE SPRINGS 8550 8.7 -M * 15.6 14.1 111 KIRWIN 9550 11.1 10.1 110 17.3 14.6 118 MARQUETTE 8760 10.9 7.6 143 17.3 15.2 114 MIDDLE POWDER 7760 7.2 14.0 51 14.4 16.3 88 OWL CREEK 8975 .7 1.0 70 10.7 9.3 115 POWDER RIVER PASS 9480 9.1 6.2 147 17.3 16.3 106 SHELL CREEK 9580 13.0 17.0 76 14.3 17.7 81 SYLVAN LAKE 8420 10.7 20.6 52 23.7 24.1 98 SYLVAN ROAD 8120 .1 4.0 3 16.0 20.0 80 TIMBER CREEK 7950 2.1 2.5 84 13.0 11.7 111 YOUNTS PEAK 8350 13.1 15.8 83 17.8 20.7 86 ----- ----- Basin wide percent of average 78 98 SHOSHONE RIVER BLACKWATER 9780 20.5 24.8 83 21.2 22.1 96 EVENING STAR 9200 19.1 30.3 63 28.0 27.7 101 KIRWIN 9550 11.1 10.1 110 17.3 14.6 118 MARQUETTE 8760 10.9 7.6 143 17.3 15.2 114 SYLVAN LAKE 8420 10.7 20.6 52 23.7 24.1 98 SYLVAN ROAD 8120 .1 4.0 3 16.0 20.0 80 YOUNTS PEAK 8350 13.1 15.8 83 17.8 20.7 86 ----- ----- Basin wide percent of average 76 98 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 1.4 0 13.1 12.1 108 BONE SPRINGS DIV 9350 15.5 16.6 93 20.0 20.0 100 BURGESS JUNCTION 7880 8.3 11.1 75 15.3 15.9 96 CLOUD PEAK RESERVOIR 9860 15.2 16.1 94 20.9 19.0 110 DOME LAKE 8880 -M 10.3 * 17.1 18.1 94 GRAVE SPRINGS 8550 8.7 -M * 15.6 14.1 111 HANSEN SAWMILL 8760 1.0 4.0 25 14.4 11.5 125 MIDDLE POWDER 7760 7.2 14.0 51 14.4 16.3 88 POWDER RIVER PASS 9480 9.1 6.2 147 17.3 16.3 106 SUCKER CREEK 8880 7.4 10.5 70 17.1 18.3 93 TIE CREEK 6870 .0 -M * 16.5 15.2 109 ----- ----- Basin wide percent of average 80 103 BELLE FOURCHE BLIND PARK 6890 .5 4.6 11 15.7 15.8 99 NORTH RAPID CREEK 6130 .0 -M * 13.2 -M * WARREN PEAK 6520 .3 4.6 7 13.4 11.7 115 ----- ----- Basin wide percent of average 9 106 UPPER N. PLATTE RIVER COLUMBINE 9400 2.8 14.1 20 26.6 29.4 90 DIVIDE PEAK 8800 10.2 12.5 82 24.1 28.9 83 ELK RIVER 8700 4.0 8.5 47 23.3 23.2 100 JOE WRIGHT 10120 21.6 23.7 91 30.0 32.4 93 NORTH FRENCH CREEK 10100 31.8 26.7 119 35.4 29.9 118 OLD BATTLE 10000 35.5 36.9 96 41.2 37.5 110 SOUTH BRUSH CREEK 8400 .9 5.9 15 16.2 21.8 74 TOWER 10500 54.0 50.8 106 47.7 46.0 104 WEBBER SPRINGS 9200 14.0 20.5 68 30.2 32.0 94 WILLOW CREEK PASS 9540 7.4 10.7 69 10.6 16.7 63 ----- ----- Basin wide percent of average 87 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.5 24.9 82 27.1 25.3 107 CASPER MTN. 7900 .8 11.2 7 15.3 20.7 74 DEADMAN HILL 10220 16.1 18.6 87 19.3 22.7 85 DEER PARK 9700 -M -M * 26.1 -M * LAPRELE CREEK 8320 .0 3.4 0 13.2 16.2 81 RENO HILL 8400 .3 8.6 3 14.4 23.3 62 ROACH 9700 12.9 16.0 81 21.6 27.8 78 SAND LAKE 10080 30.3 35.4 86 29.6 26.4 112 SOUTH PASS 9040 13.6 16.5 82 22.5 22.1 102 WINDY PEAK 7840 .0 3.5 0 11.6 13.8 84 ----- ----- Basin wide percent of average 68 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .0 * 18.0 19.6 92 DIVIDE PEAK 8800 10.2 12.5 82 24.1 28.9 83 OLD BATTLE 10000 35.5 36.9 96 41.2 37.5 110 SANDSTONE RS 8150 .0 2.3 0 22.9 24.4 94 WHISKEY PARK 8950 28.5 25.3 113 34.4 35.9 96 ----- ----- Basin wide percent of average 96 96 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.0 9.8 92 16.1 19.4 83 BLIND BULL SUM 8650 22.3 22.4 100 22.5 28.1 80 EAST RIM DIVIDE 7930 8.1 12.7 64 14.3 18.2 79 ELKHART PARK G.S. 9400 9.0 9.8 92 17.1 19.1 90 GROS VENTRE SUMMIT 8775 8.8 10.1 87 15.9 19.0 84 KENDALL R.S. 7740 .7 .0 * 17.8 18.5 96 LOOMIS PARK 8240 -M 11.3 * 20.4 22.5 91 NEW FORK LAKE 8340 2.2 6.2 35 13.5 17.3 78 SNIDER BASIN 8250 6.9 8.5 81 15.7 18.1 87 SPRING CREEK DIVIDE 9000 20.4 26.0 78 26.1 32.2 81 TRIPLE PEAK 8500 12.6 21.2 59 25.9 36.7 71 ----- ----- Basin wide percent of average 78 82 LOWER GREEN RIVER HAMS FORK 7840 .0 .0 100* 14.1 16.0 88 HEWINTA 9500 4.5 .0 * 18.6 17.5 106 HICKERSON PARK 9150 6.4 .6 1067* 17.5 13.6 129 HOLE-IN-ROCK 9150 2.1 .5 420* 15.1 13.6 111 INDIAN CREEK 9425 22.0 24.9 88 23.8 30.6 78 KELLEY R.S. 8180 7.9 10.0 79 20.2 22.4 90 STEEL CREEK PARK 10100 22.3 16.6 134 22.9 17.8 129 ----- ----- Basin wide percent of average 115* 101 UPPER BEAR RIVER BUG LAKE 7950 13.8 10.1 137 25.3 23.6 107 HAYDEN FORK 9400 6.7 .7 957* 25.8 24.4 106 KELLEY R.S. 8180 7.9 10.0 79 20.2 22.4 90 LILY LAKE 9050 7.2 5.7 126 22.5 19.4 116 MONTE CRISTO 8960 -M 21.9 * -M 31.8 * SALT RIVER SUMMIT 7600 4.3 .0 * 22.7 20.2 112 TRIAL LAKE 9960 20.8 21.0 99 28.7 29.8 96 ----- ----- Basin wide percent of average 119 104 ----------------------------------------------------------------------------- -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.