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 23 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 3.4 0 19.4 26.3 74 COTTONWOOD CREEK 7600 3.0 9.8 31 29.6 34.7 85 GRANITE CREEK 6770 .0 4.5 0 20.4 24.2 84 GRASSY LAKE 7265 4.0 20.6 19 31.5 43.9 72 GROS VENTRE SUMMIT 8750 1.8 7.0 26 14.6 17.0 86 LEWIS LAKE DIVIDE 7850 4.9 23.8 21 29.6 44.3 67 PHILLIPS BENCH 8200 15.6 19.3 81 30.3 35.6 85 SALT RIVER SUMMIT 7600 .0 2.6 0 21.6 23.4 92 SNAKE RIVER STATION 6920 .2 3.0 7 18.0 27.6 65 SPRING CREEK DIVIDE 9000 18.7 20.1 93 27.9 32.3 86 THUMB DIVIDE 7980 .2 6.0 3 17.2 24.0 72 TOGWOTEE PASS 9580 16.6 24.8 67 23.2 31.6 73 TWO OCEAN PLATEAU 9240 19.6 28.1 70 24.1 35.1 69 WILLOW CREEK 8450 13.4 20.1 67 39.7 41.2 96 ----- ----- Basin wide percent of average 51 79 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 14.9 23.0 65 19.2 26.0 74 BLACK BEAR 8170 23.8 31.6 75 38.7 49.0 79 CANYON 8090 .0 4.4 0 14.1 19.7 72 FISHER CREEK 9100 23.6 33.5 70 32.6 45.3 72 MADISON PLATEAU 7750 9.7 14.6 66 26.6 33.2 80 NORTHEAST ENTRANCE 7350 .2 1.9 11 11.6 16.8 69 PARKER PEAK 9400 13.7 21.4 64 18.8 22.1 85 SYLVAN LAKE 8420 3.9 16.1 24 22.9 27.8 82 THUMB DIVIDE 7980 .2 6.0 3 17.2 24.0 72 TWO OCEAN PLATEAU 9240 19.6 28.1 70 24.1 35.1 69 WHISKEY CREEK 6800 .0 5.8 0 21.7 26.4 82 WHITE MILL 8700 14.5 21.5 67 21.9 34.0 64 WOLVERINE 7650 .1 1.7 6 11.8 17.4 68 ----- ----- Basin wide percent of average 59 75 WIND RIVER BURROUGHS CREEK 8750 6.2 7.1 87 16.1 21.6 75 COLD SPRINGS 9630 .1 2.3 4 14.8 16.2 91 DEER PARK 9700 20.9 12.9 162 32.0 29.8 107 HOBBS PARK 10100 14.6 13.6 107 21.2 19.8 107 LITTLE WARM 9370 3.0 5.0 60 16.0 19.1 84 SOUTH PASS 9040 13.8 10.4 133 26.8 25.0 107 ST. LAWRENCE ALT 8620 .2 2.3 9 14.7 14.3 103 TOGWOTEE PASS 9580 16.6 24.8 67 23.2 31.6 73 TOWNSEND CREEK 8700 .0 3.8 0 19.4 17.8 109 ----- ----- Basin wide percent of average 92 94 BIGHORN BASIN BALD MTN. 9380 17.3 20.0 86 23.4 24.1 97 BEAR TRAP MEADOW 8200 .1 .4 25* 13.3 13.2 101 BLACKWATER 9780 16.0 26.9 59 21.7 27.7 78 BONE SPRINGS DIV 9350 13.9 12.4 112 23.5 21.1 111 EVENING STAR 9200 14.7 29.8 49 28.4 33.1 86 GRAVE SPRINGS 8550 .0 5.0 0 13.0 15.2 86 KIRWIN 9550 7.6 8.4 90 16.3 16.5 99 MARQUETTE 8760 1.4 6.7 21 15.7 16.8 93 MIDDLE POWDER 7760 .4 7.1 6 12.4 18.1 69 OWL CREEK 8975 .1 1.5 7 12.8 10.3 124 POWDER RIVER PASS 9480 1.4 5.4 26 18.3 18.5 99 SHELL CREEK 9580 15.0 13.5 111 20.6 19.4 106 SYLVAN LAKE 8420 3.9 16.1 24 22.9 27.8 82 SYLVAN ROAD 7120 .1 1.4 7 14.4 22.5 64 TIMBER CREEK 7950 .0 1.4 0 12.4 13.3 93 YOUNTS PEAK 8350 3.7 11.4 32 16.9 21.1 80 ----- ----- Basin wide percent of average 57 90 SHOSHONE RIVER BLACKWATER 9780 16.0 26.9 59 21.7 27.7 78 EVENING STAR 9200 14.7 29.8 49 28.4 33.1 86 KIRWIN 9550 7.6 8.4 90 16.3 16.5 99 MARQUETTE 8760 1.4 6.7 21 15.7 16.8 93 SYLVAN LAKE 8420 3.9 16.1 24 22.9 27.8 82 SYLVAN ROAD 7120 .1 1.4 7 14.4 22.5 64 YOUNTS PEAK 8350 3.7 11.4 32 16.9 21.1 80 ----- ----- Basin wide percent of average 47 82 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .4 25* 13.3 13.2 101 BIG GOOSE 7990 2.4 6.1 39 19.0 15.4 123 BONE SPRINGS DIV 9350 13.9 12.4 112 23.5 21.1 111 BURGESS JUNCTION 7880 3.6 6.6 55 17.9 17.6 102 CLOUD PEAK RESERVOIR 9860 15.4 11.5 134 22.4 20.4 110 DOME LAKE 8880 3.9 7.0 56 21.0 19.5 108 GRAVE SPRINGS 8550 .0 5.0 0 13.0 15.2 86 HANSEN SAWMILL 8360 .0 1.3 0 15.6 13.2 118 MIDDLE POWDER 7760 .4 7.1 6 12.4 18.1 69 POWDER RIVER PASS 9480 1.4 5.4 26 18.3 18.5 99 SUCKER CREEK 8880 9.4 7.1 132 23.4 20.3 115 TIE CREEK 6870 .2 .7 29 19.1 16.1 119 ----- ----- Basin wide percent of average 72 105 BELLE FOURCHE BLIND PARK 6890 .2 .1 200* 14.3 16.8 85 COLE CANYON 5910 .0 1.9 0 13.7 -M * NORTH RAPID CREEK 6130 .0 .3 0* 11.5 13.2 87 ----- ----- Basin wide percent of average 9* 86 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 7.9 0 -M 31.3 * DIVIDE PEAK 8860 4.7 8.5 55 28.9 26.6 109 ELK RIVER 8700 .7 4.6 15 26.7 25.1 106 JOE WRIGHT 10120 17.6 20.6 85 26.6 33.4 80 NORTH FRENCH CREEK 10130 25.0 28.8 87 32.1 33.0 97 OLD BATTLE 9920 34.9 30.8 113 -M 43.0 * SAGE CREEK BASIN 7850 .1 4.9 2 19.4 15.4 126 SOUTH BRUSH CREEK 8440 .0 4.2 0 20.2 22.6 89 TOWER 10500 37.3 47.3 79 47.1 48.6 97 WEBBER SPRINGS 9250 10.4 12.6 83 32.9 33.7 98 WILLOW CREEK PASS 9540 10.4 7.4 141 16.7 17.9 93 ----- ----- Basin wide percent of average 79 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 12.7 17.7 72 24.9 29.9 83 CASPER MTN. 7850 .4 8.2 5 17.1 22.7 75 DEADMAN HILL 10220 13.3 14.8 90 18.6 23.6 79 DEER PARK 9700 20.9 12.9 162 32.0 29.8 107 LAPRELE CREEK 8375 .0 2.3 0 15.0 19.1 79 RENO HILL 8500 .1 6.7 1 17.0 23.4 73 ROACH 9700 8.0 9.9 81 23.0 25.2 91 SAND LAKE 10050 23.3 30.9 75 29.9 32.8 91 SOUTH PASS 9040 13.8 10.4 133 26.8 25.0 107 WINDY PEAK 7900 .7 .9 78 12.0 16.1 75 ----- ----- Basin wide percent of average 81 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .1 .3 33* 20.1 20.2 100 DIVIDE PEAK 8860 4.7 8.5 55 28.9 26.6 109 OLD BATTLE 9920 34.9 30.8 113 -M 43.0 * SANDSTONE RS 8150 .3 2.0 15 24.4 24.0 102 WHISKEY PARK 8950 21.0 20.4 103 31.8 36.6 87 ----- ----- Basin wide percent of average 98 98 UPPER GREEN RIVER BIG SANDY OPENING 9080 6.8 5.4 126 19.8 17.8 111 BLIND BULL SUM 8900 14.8 21.6 69 21.0 27.3 77 EAST RIM DIVIDE 7930 .0 5.6 0 14.0 15.5 90 ELKHART PARK G.S. 9400 7.7 6.5 118 19.9 18.1 110 GROS VENTRE SUMMIT 8750 1.8 7.0 26 14.6 17.0 86 KENDALL R.S. 7740 .1 2.0 5 16.3 18.0 91 LOOMIS PARK 8240 .8 6.2 13 20.6 21.7 95 NEW FORK LAKE 8340 .1 2.0 5 16.6 15.2 109 SNIDER BASIN 8060 .0 4.1 0 16.9 19.8 85 SPRING CREEK DIVIDE 9000 18.7 20.1 93 27.9 32.3 86 TRIPLE PEAK 8500 3.7 11.3 33 26.2 30.9 85 ----- ----- Basin wide percent of average 59 92 LOWER GREEN RIVER HAMS FORK 7840 .1 .6 17* 18.5 16.3 113 HEWINTA 9500 .0 2.7 0 16.7 19.6 85 HICKERSON PARK 9100 .0 1.1 0 13.9 11.9 117 HOLE-IN-ROCK 9150 .0 .9 0 13.7 11.5 119 INDIAN CREEK 9425 25.3 19.5 130 31.2 31.6 99 KELLEY R.S. 8180 5.4 5.5 98 24.8 25.4 98 STEEL CREEK PARK 10100 14.9 15.1 99 20.9 22.3 94 ----- ----- Basin wide percent of average 101 101 UPPER BEAR RIVER BUG LAKE 7950 8.9 7.0 127 29.0 24.3 119 HAYDEN FORK 9100 .3 4.5 7 30.5 27.5 111 KELLEY R.S. 8180 5.4 5.5 98 24.8 25.4 98 LILY LAKE 9050 .2 4.0 5 23.0 23.2 99 MONTE CRISTO 8960 22.5 17.9 126 38.2 32.9 116 SALT RIVER SUMMIT 7600 .0 2.6 0 21.6 23.4 92 TRIAL LAKE 9960 26.1 19.1 137 37.7 32.2 117 ----- ----- Basin wide percent of average 105 108 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values 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 1971-2000. 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.