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 11 , 1998 ----------------------------------------------------------------------------- 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 6.5 62 22.9 26.1 88 COTTONWOOD CREEK 7600 10.8 15.7 69 27.0 29.1 93 GRANITE CREEK 6770 7.4 8.9 83 22.9 27.8 82 GRASSY LAKE 7265 20.8 29.1 71 38.8 43.3 90 GROS VENTRE SUMMIT 8775 8.7 11.2 78 15.6 18.7 83 LEWIS LAKE DIVIDE 7860 22.1 31.0 71 35.5 44.1 80 PHILLIPS BENCH 8200 23.2 26.5 88 29.9 34.7 86 SALT RIVER SUMMIT 7600 4.6 3.1 148 21.6 19.9 109 SNAKE RIVER STATION 6920 3.6 12.9 28 25.1 30.4 83 SPRING CREEK DIVIDE 9000 19.8 27.0 73 25.3 31.8 80 THUMB DIVIDE 7980 6.9 12.3 56 20.5 24.4 84 TOGWOTEE PASS 9580 23.1 26.7 87 27.1 33.0 82 TWO OCEAN PLATEAU 9360 27.5 26.7 103 30.5 35.9 85 WILLOW CREEK 8450 17.5 29.0 60 36.2 37.4 97 ----- ----- Basin wide percent of average 75 87 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 16.6 25.2 66 18.4 22.4 82 BLACK BEAR 7950 34.1 37.8 90 40.2 47.8 84 CANYON 7940 3.5 7.8 45 16.5 17.1 96 FISHER CREEK 9100 26.8 37.8 71 30.9 43.7 71 MADISON PLATEAU 7750 14.9 20.3 73 26.0 31.0 84 NORTHEAST ENTRANCE 7350 .0 3.5 0 12.7 14.7 86 PARKER PEAK 9400 14.3 23.0 62 18.1 19.3 94 SYLVAN LAKE 8420 13.5 21.5 63 22.9 23.6 97 THUMB DIVIDE 7980 6.9 12.3 56 20.5 24.4 84 TWO OCEAN PLATEAU 9360 27.5 26.7 103 30.5 35.9 85 WHISKEY CREEK 6800 9.7 11.1 87 21.2 25.8 82 WHITE MILL 8700 19.8 25.3 78 23.3 33.9 69 WOLVERINE 7650 .0 4.5 0 -M 16.1 * ----- ----- Basin wide percent of average 73 83 WIND RIVER BURROUGHS CREEK 8750 12.7 8.6 148 19.9 20.4 98 COLD SPRINGS 9630 6.7 3.9 172 16.1 14.1 114 DEER PARK 9700 -M -M * 25.7 -M * HOBBS PARK 10100 19.6 17.2 114 19.9 18.5 108 LITTLE WARM 9620 6.5 6.8 96 16.5 17.3 95 SOUTH PASS 9040 13.9 17.0 82 21.9 21.7 101 ST. LAWRENCE ALT 8620 5.9 3.3 179 14.2 13.2 108 TOGWOTEE PASS 9580 23.1 26.7 87 27.1 33.0 82 TOWNSEND CREEK 8700 8.8 7.1 124 18.2 16.5 110 ----- ----- Basin wide percent of average 107 99 BIGHORN BASIN BALD MTN. 9375 19.5 24.3 80 20.4 22.3 91 BEAR TRAP MEADOW 7900 .2 2.2 9 12.5 11.7 107 BLACKWATER 9780 19.8 25.1 79 20.6 21.7 95 BONE SPRINGS DIV 9350 16.2 17.1 95 19.9 19.4 103 EVENING STAR 9200 18.8 30.4 62 27.2 27.2 100 GRAVE SPRINGS 8550 8.8 -M * 14.7 13.6 108 KIRWIN 9550 11.1 10.6 105 16.9 14.2 119 MARQUETTE 8760 10.7 7.9 135 16.6 14.7 113 MIDDLE POWDER 7760 8.4 14.2 59 13.8 15.9 87 OWL CREEK 8975 1.5 1.7 88 10.1 8.9 113 POWDER RIVER PASS 9480 9.7 7.4 131 16.8 15.8 106 SHELL CREEK 9580 13.3 17.0 78 13.9 17.2 81 SYLVAN LAKE 8420 13.5 21.5 63 22.9 23.6 97 SYLVAN ROAD 8120 .1 5.1 2 15.4 19.6 79 TIMBER CREEK 7950 3.4 3.5 97 12.8 11.2 114 YOUNTS PEAK 8350 13.3 16.5 81 17.2 20.3 85 ----- ----- Basin wide percent of average 78 98 SHOSHONE RIVER BLACKWATER 9780 19.8 25.1 79 20.6 21.7 95 EVENING STAR 9200 18.8 30.4 62 27.2 27.2 100 KIRWIN 9550 11.1 10.6 105 16.9 14.2 119 MARQUETTE 8760 10.7 7.9 135 16.6 14.7 113 SYLVAN LAKE 8420 13.5 21.5 63 22.9 23.6 97 SYLVAN ROAD 8120 .1 5.1 2 15.4 19.6 79 YOUNTS PEAK 8350 13.3 16.5 81 17.2 20.3 85 ----- ----- Basin wide percent of average 75 97 POWDER-TONGUE BEAR TRAP MEADOW 7900 .2 2.2 9 12.5 11.7 107 BONE SPRINGS DIV 9350 16.2 17.1 95 19.9 19.4 103 BURGESS JUNCTION 7880 9.5 11.8 81 15.2 15.5 98 CLOUD PEAK RESERVOIR 9860 15.7 16.6 95 20.3 18.5 110 DOME LAKE 8880 -M 11.6 * 16.8 17.6 95 GRAVE SPRINGS 8550 8.8 -M * 14.7 13.6 108 HANSEN SAWMILL 8760 3.4 4.8 71 14.1 11.2 126 MIDDLE POWDER 7760 8.4 14.2 59 13.8 15.9 87 POWDER RIVER PASS 9480 9.7 7.4 131 16.8 15.8 106 SUCKER CREEK 8880 8.9 11.4 78 17.0 17.8 96 TIE CREEK 6870 .2 -M * 16.4 14.8 111 ----- ----- Basin wide percent of average 84 103 BELLE FOURCHE BLIND PARK 6890 -M 6.0 * 14.7 15.2 97 NORTH RAPID CREEK 6130 .0 -M * 12.4 -M * WARREN PEAK 6520 1.1 6.0 18 13.1 11.3 116 ----- ----- Basin wide percent of average 18* 105 UPPER N. PLATTE RIVER COLUMBINE 9400 6.1 16.4 37 26.8 29.0 92 DIVIDE PEAK 8800 12.3 14.4 85 23.9 28.4 84 ELK RIVER 8700 6.1 10.7 57 23.8 22.9 104 JOE WRIGHT 10120 22.4 24.0 93 29.5 31.8 93 NORTH FRENCH CREEK 10100 32.6 27.5 119 35.0 29.4 119 OLD BATTLE 10000 35.4 37.3 95 40.6 37.0 110 SOUTH BRUSH CREEK 8400 1.2 7.2 17 15.9 21.5 74 TOWER 10500 53.7 50.9 106 47.1 45.2 104 WEBBER SPRINGS 9200 15.7 22.1 71 29.9 31.6 95 WILLOW CREEK PASS 9540 8.9 11.5 77 10.5 16.3 64 ----- ----- Basin wide percent of average 88 97 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.3 26.0 86 27.0 24.9 108 CASPER MTN. 7900 3.5 13.1 27 15.2 20.1 76 DEADMAN HILL 10220 17.2 18.7 92 19.1 22.2 86 DEER PARK 9700 -M -M * 25.7 -M * LAPRELE CREEK 8320 .0 4.2 0 13.0 15.8 82 RENO HILL 8400 2.9 10.0 29 13.9 23.0 60 ROACH 9700 14.2 16.6 86 21.3 27.2 78 SAND LAKE 10080 30.9 35.9 86 29.2 26.0 112 SOUTH PASS 9040 13.9 17.0 82 21.9 21.7 101 WINDY PEAK 7840 .0 4.8 0 11.4 13.3 86 ----- ----- Basin wide percent of average 72 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 1.4 14 17.9 19.3 93 DIVIDE PEAK 8800 12.3 14.4 85 23.9 28.4 84 OLD BATTLE 10000 35.4 37.3 95 40.6 37.0 110 SANDSTONE RS 8150 1.0 4.4 23 22.5 24.0 94 WHISKEY PARK 8950 28.7 26.5 108 33.6 35.4 95 ----- ----- Basin wide percent of average 92 96 UPPER GREEN RIVER BIG SANDY OPENING 9100 9.0 11.0 82 15.5 19.2 81 BLIND BULL SUM 8650 22.1 22.5 98 22.0 27.7 79 EAST RIM DIVIDE 7930 8.7 13.3 65 14.0 17.9 78 ELKHART PARK G.S. 9400 7.7 11.0 70 16.4 18.8 87 GROS VENTRE SUMMIT 8775 8.7 11.2 78 15.6 18.7 83 KENDALL R.S. 7740 2.7 3.0 90 17.4 18.3 95 LOOMIS PARK 8240 -M 12.4 * 19.9 22.2 90 NEW FORK LAKE 8340 2.5 7.0 36 13.2 17.0 78 SNIDER BASIN 8250 7.9 9.8 81 15.2 17.8 85 SPRING CREEK DIVIDE 9000 19.8 27.0 73 25.3 31.8 80 TRIPLE PEAK 8500 12.9 22.3 58 25.3 36.2 70 ----- ----- Basin wide percent of average 74 81 LOWER GREEN RIVER HAMS FORK 7840 .3 1.6 19 13.8 15.7 88 HEWINTA 9500 4.8 1.5 320 18.4 17.2 107 HICKERSON PARK 9150 7.0 1.3 538 17.1 13.2 130 HOLE-IN-ROCK 9150 3.0 1.0 300 14.5 13.2 110 INDIAN CREEK 9425 21.6 26.0 83 23.0 30.2 76 KELLEY R.S. 8180 7.4 11.4 65 19.2 22.1 87 STEEL CREEK PARK 10100 21.4 17.3 124 22.4 17.3 129 ----- ----- Basin wide percent of average 109 100 UPPER BEAR RIVER BUG LAKE 7950 13.5 11.8 114 24.4 23.3 105 HAYDEN FORK 9400 6.9 2.4 288 25.2 24.0 105 KELLEY R.S. 8180 7.4 11.4 65 19.2 22.1 87 LILY LAKE 9050 6.9 6.6 105 22.0 19.0 116 MONTE CRISTO 8960 23.7 23.1 103 30.8 31.4 98 SALT RIVER SUMMIT 7600 4.6 3.1 148 21.6 19.9 109 TRIAL LAKE 9960 20.1 21.9 92 27.8 29.4 95 ----- ----- Basin wide percent of average 103 101 ----------------------------------------------------------------------------- -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.