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 7 , 1998 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.6 8.2 80 22.9 25.7 89 COTTONWOOD CREEK 7600 12.4 17.4 71 26.3 28.8 91 GRANITE CREEK 6770 9.2 10.5 88 22.4 27.4 82 GRASSY LAKE 7265 23.4 31.0 75 38.5 42.8 90 GROS VENTRE SUMMIT 8775 9.8 12.3 80 15.1 18.5 82 LEWIS LAKE DIVIDE 7860 25.1 32.3 78 35.3 43.5 81 PHILLIPS BENCH 8200 23.9 27.7 86 29.2 34.3 85 SALT RIVER SUMMIT 7600 6.8 6.2 110 20.7 19.6 106 SNAKE RIVER STATION 6920 7.2 14.3 50 24.8 30.0 83 SPRING CREEK DIVIDE 9000 20.4 28.1 73 24.8 31.4 79 THUMB DIVIDE 7980 9.6 13.4 72 20.2 24.1 84 TOGWOTEE PASS 9580 23.9 27.3 88 26.8 32.6 82 TWO OCEAN PLATEAU 9360 28.9 27.0 107 30.4 35.4 86 WILLOW CREEK 8450 19.1 30.1 63 35.4 36.9 96 ----- ----- Basin wide percent of average 79 86 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.7 25.5 69 18.3 21.9 84 BLACK BEAR 7950 36.6 38.6 95 39.9 47.3 84 CANYON 7940 6.3 9.0 70 16.4 16.8 98 FISHER CREEK 9100 27.6 38.1 72 30.9 43.1 72 MADISON PLATEAU 7750 17.1 21.7 79 25.8 30.6 84 NORTHEAST ENTRANCE 7350 .0 4.5 0 12.7 14.4 88 PARKER PEAK 9400 15.8 23.3 68 18.0 18.8 96 SYLVAN LAKE 8420 13.6 22.4 61 22.7 23.1 98 THUMB DIVIDE 7980 9.6 13.4 72 20.2 24.1 84 TWO OCEAN PLATEAU 9360 28.9 27.0 107 30.4 35.4 86 WHISKEY CREEK 6800 11.9 12.8 93 21.1 25.4 83 WHITE MILL 8700 21.2 25.7 82 23.1 33.4 69 WOLVERINE 7650 .0 5.9 0 -M 15.8 * ----- ----- Basin wide percent of average 77 84 WIND RIVER BURROUGHS CREEK 8750 14.1 10.3 137 19.5 20.0 98 COLD SPRINGS 9630 7.2 5.1 141 15.1 13.7 110 DEER PARK 9700 -M -M * 25.0 -M * HOBBS PARK 10100 19.0 17.5 109 19.0 18.0 106 LITTLE WARM 9620 7.7 8.3 93 16.0 16.9 95 SOUTH PASS 9040 14.5 17.4 83 21.4 21.3 100 ST. LAWRENCE ALT 8620 7.0 4.1 171 13.4 12.9 104 TOGWOTEE PASS 9580 23.9 27.3 88 26.8 32.6 82 TOWNSEND CREEK 8700 10.0 8.0 125 17.5 16.1 109 ----- ----- Basin wide percent of average 106 98 BIGHORN BASIN BALD MTN. 9375 20.3 24.2 84 20.4 21.7 94 BEAR TRAP MEADOW 7900 .0 3.0 0 11.6 11.2 104 BLACKWATER 9780 20.5 25.3 81 20.5 21.3 96 BONE SPRINGS DIV 9350 17.8 17.6 101 19.8 18.9 105 EVENING STAR 9200 19.7 30.6 64 27.1 26.7 101 GRAVE SPRINGS 8550 9.8 -M * 14.2 13.1 108 KIRWIN 9550 11.7 11.0 106 16.4 13.9 118 MARQUETTE 8760 11.8 8.2 144 16.5 14.2 116 MIDDLE POWDER 7760 9.8 14.5 68 13.5 15.5 87 OWL CREEK 8975 3.3 2.4 138 9.9 8.6 115 POWDER RIVER PASS 9480 9.8 8.7 113 16.3 15.4 106 SHELL CREEK 9580 13.9 17.0 82 13.8 16.7 83 SYLVAN LAKE 8420 13.6 22.4 61 22.7 23.1 98 SYLVAN ROAD 8120 .5 6.2 8 15.2 19.2 79 TIMBER CREEK 7950 5.0 4.5 111 12.7 10.7 119 YOUNTS PEAK 8350 14.2 17.2 83 17.0 19.9 85 ----- ----- Basin wide percent of average 81 99 SHOSHONE RIVER BLACKWATER 9780 20.5 25.3 81 20.5 21.3 96 EVENING STAR 9200 19.7 30.6 64 27.1 26.7 101 KIRWIN 9550 11.7 11.0 106 16.4 13.9 118 MARQUETTE 8760 11.8 8.2 144 16.5 14.2 116 SYLVAN LAKE 8420 13.6 22.4 61 22.7 23.1 98 SYLVAN ROAD 8120 .5 6.2 8 15.2 19.2 79 YOUNTS PEAK 8350 14.2 17.2 83 17.0 19.9 85 ----- ----- Basin wide percent of average 76 98 POWDER-TONGUE BEAR TRAP MEADOW 7900 .0 3.0 0 11.6 11.2 104 BONE SPRINGS DIV 9350 17.8 17.6 101 19.8 18.9 105 BURGESS JUNCTION 7880 10.3 12.5 82 15.1 15.0 101 CLOUD PEAK RESERVOIR 9860 16.1 17.0 95 20.0 17.9 112 DOME LAKE 8880 -M 13.0 * 16.5 17.1 96 GRAVE SPRINGS 8550 9.8 -M * 14.2 13.1 108 HANSEN SAWMILL 8760 3.8 5.7 67 13.6 10.8 126 MIDDLE POWDER 7760 9.8 14.5 68 13.5 15.5 87 POWDER RIVER PASS 9480 9.8 8.7 113 16.3 15.4 106 SUCKER CREEK 8880 10.1 12.4 81 16.9 17.3 98 TIE CREEK 6870 .7 -M * 16.3 14.4 113 ----- ----- Basin wide percent of average 85 104 BELLE FOURCHE BLIND PARK 6890 .3 7.5 4 14.2 14.7 97 NORTH RAPID CREEK 6130 1.0 -M * 11.8 -M * WARREN PEAK 6520 2.5 7.5 33 12.3 10.9 113 ----- ----- Basin wide percent of average 19 104 UPPER N. PLATTE RIVER COLUMBINE 9400 9.0 18.7 48 26.0 28.6 91 DIVIDE PEAK 8800 13.5 16.4 82 23.0 28.0 82 ELK RIVER 8700 7.7 12.9 60 22.6 22.6 100 JOE WRIGHT 10120 20.9 24.3 86 28.0 31.2 90 NORTH FRENCH CREEK 10100 31.2 28.2 111 33.6 28.8 117 OLD BATTLE 10000 34.5 37.6 92 39.2 36.5 107 SOUTH BRUSH CREEK 8400 1.6 8.6 19 14.7 21.1 70 TOWER 10500 52.1 51.0 102 45.9 44.4 103 WEBBER SPRINGS 9200 16.7 23.6 71 28.9 31.2 93 WILLOW CREEK PASS 9540 9.1 12.3 74 9.9 16.0 62 ----- ----- Basin wide percent of average 84 94 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.9 27.2 81 25.8 24.4 106 CASPER MTN. 7900 5.9 15.0 39 15.3 19.6 78 DEADMAN HILL 10220 16.4 18.9 87 18.2 21.8 83 DEER PARK 9700 -M -M * 25.0 -M * LAPRELE CREEK 8320 .0 5.1 0 12.7 15.4 82 RENO HILL 8400 5.2 11.3 46 13.6 22.8 60 ROACH 9700 13.9 17.2 81 20.5 26.7 77 SAND LAKE 10080 30.0 36.4 82 28.2 25.5 111 SOUTH PASS 9040 14.5 17.4 83 21.4 21.3 100 WINDY PEAK 7840 .0 6.0 0 10.7 12.9 83 ----- ----- Basin wide percent of average 70 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 2.7 7 17.6 19.0 93 DIVIDE PEAK 8800 13.5 16.4 82 23.0 28.0 82 OLD BATTLE 10000 34.5 37.6 92 39.2 36.5 107 SANDSTONE RS 8150 2.9 6.6 44 21.6 23.6 92 WHISKEY PARK 8950 27.3 27.8 98 32.1 34.8 92 ----- ----- Basin wide percent of average 86 94 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.5 12.1 79 14.5 18.9 77 BLIND BULL SUM 8650 22.3 22.6 99 21.1 27.4 77 EAST RIM DIVIDE 7930 9.9 13.9 71 13.5 17.7 76 ELKHART PARK G.S. 9400 9.0 12.2 74 15.6 18.6 84 GROS VENTRE SUMMIT 8775 9.8 12.3 80 15.1 18.5 82 KENDALL R.S. 7740 5.6 6.1 92 17.0 18.0 94 LOOMIS PARK 8240 -M 13.5 * 19.6 21.9 89 NEW FORK LAKE 8340 4.2 7.9 53 13.1 16.8 78 SNIDER BASIN 8250 9.6 11.1 86 14.9 17.6 85 SPRING CREEK DIVIDE 9000 20.4 28.1 73 24.8 31.4 79 TRIPLE PEAK 8500 14.6 23.4 62 24.8 35.7 69 ----- ----- Basin wide percent of average 77 80 LOWER GREEN RIVER HAMS FORK 7840 .3 3.3 9 13.3 15.5 86 HEWINTA 9500 6.3 3.0 210 17.8 16.8 106 HICKERSON PARK 9150 8.6 1.9 453 16.5 12.9 128 HOLE-IN-ROCK 9150 5.4 1.5 360 14.2 12.9 110 INDIAN CREEK 9425 22.2 27.2 82 22.3 29.8 75 KELLEY R.S. 8180 9.0 12.9 70 18.5 21.8 85 STEEL CREEK PARK 10100 20.8 17.9 116 22.0 16.8 131 ----- ----- Basin wide percent of average 107 98 UPPER BEAR RIVER BUG LAKE 7950 15.1 13.5 112 23.7 23.0 103 HAYDEN FORK 9400 8.2 4.1 200 24.4 23.6 103 KELLEY R.S. 8180 9.0 12.9 70 18.5 21.8 85 LILY LAKE 9050 9.5 7.4 128 21.1 18.6 113 MONTE CRISTO 8960 25.1 24.4 103 29.9 31.0 96 SALT RIVER SUMMIT 7600 6.8 6.2 110 20.7 19.6 106 TRIAL LAKE 9960 21.9 22.7 96 27.2 29.0 94 ----- ----- Basin wide percent of average 105 99 ----------------------------------------------------------------------------- -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.