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 TUESDAY: MAY 26 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 1.9 0 24.3 26.5 92 COTTONWOOD CREEK 7670 9.0 8.9 101 39.0 35.1 111 GRAND TARGHEE 9260 43.4 -M * 43.0 -M * GRANITE CREEK 6770 .2 3.8 5 27.3 24.4 112 GRASSY LAKE 7265 10.7 19.7 54 42.9 44.2 97 GROS VENTRE SUMMIT 8750 .7 6.4 11 19.1 17.1 112 GUNSIGHT PASS 9820 11.0 -M * 21.0 -M * LEWIS LAKE DIVIDE 7850 20.8 23.0 90 42.4 44.6 95 PHILLIPS BENCH 8200 16.6 18.4 90 36.4 35.9 101 SALT RIVER SUMMIT 7760 .2 .0 21.1 23.6 89 SNAKE RIVER STATION 6920 .0 .5 0 29.0 27.8 104 SPRING CREEK DIVIDE 9000 20.0 19.5 103 33.3 32.5 102 THUMB DIVIDE 7980 .6 5.2 12 27.7 24.3 114 TOGWOTEE PASS 9580 25.5 24.8 103 36.5 32.0 114 TWO OCEAN PLATEAU 9240 38.9 28.0 139 37.8 35.5 106 WILLOW CREEK 8380 17.9 19.3 93 49.8 41.7 119 ----- ----- Basin wide percent of average 90 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.8 23.2 98 27.5 26.3 105 BLACK BEAR 8170 32.2 31.5 102 45.6 49.4 92 CANYON 7870 1.7 3.5 49 20.3 19.9 102 FISHER CREEK 9100 34.7 33.0 105 45.4 45.7 99 MADISON PLATEAU 7750 14.4 13.6 106 32.3 33.4 97 NORTHEAST ENTRANCE 7350 .0 .9 0 18.2 16.9 108 PARKER PEAK 9400 19.3 21.5 90 24.4 22.4 109 SYLVAN LAKE 8420 -M 15.5 * 30.4 28.0 109 THUMB DIVIDE 7980 .6 5.2 12 27.7 24.3 114 TWO OCEAN PLATEAU 9240 38.9 28.0 139 37.8 35.5 106 WHISKEY CREEK 6800 6.2 4.5 138 26.4 26.6 99 WHITE MILL 8700 22.4 21.3 105 31.7 34.3 92 WOLVERINE 7650 .0 .6 0 17.0 17.7 96 ----- ----- Basin wide percent of average 103 101 WIND RIVER BURROUGHS CREEK 8750 9.1 6.3 144 22.0 21.9 100 COLD SPRINGS 9630 .0 1.3 0 16.2 16.5 98 DEER PARK 9700 6.6 13.2 50 24.2 30.1 80 HOBBS PARK 10100 9.7 13.2 73 21.7 20.2 107 LITTLE WARM 9370 .0 3.9 0 19.9 19.4 103 SOUTH PASS 9040 1.3 9.2 14 21.0 25.4 83 ST. LAWRENCE ALT 8620 .1 1.0 10 15.1 14.6 103 TOGWOTEE PASS 9580 25.5 24.8 103 36.5 32.0 114 TOWNSEND CREEK 8700 .0 2.8 0 17.9 18.2 98 ----- ----- Basin wide percent of average 69 98 BIGHORN BASIN BALD MTN. 9380 14.8 19.9 74 20.1 24.6 82 BEAR TRAP MEADOW 8200 .0 .1 0 13.0 13.5 96 BLACKWATER 9780 26.9 27.7 97 30.9 28.0 110 BONE SPRINGS DIV 9350 9.6 12.2 79 18.9 21.5 88 EVENING STAR 9200 25.0 29.6 84 40.1 33.4 120 GRAVE SPRINGS 8550 .0 2.9 0 13.2 15.5 85 KIRWIN 9550 5.4 8.2 66 20.0 16.8 119 MARQUETTE 8760 .0 6.2 0 13.7 17.1 80 MIDDLE POWDER 7760 .0 6.0 0 14.4 18.5 78 OWL CREEK 8975 .1 1.1 9 10.9 10.4 105 POWDER RIVER PASS 9480 3.9 4.3 91 19.7 18.8 105 SHELL CREEK 9580 13.0 13.4 97 20.6 19.8 104 SYLVAN LAKE 8420 -M 15.5 * 30.4 28.0 109 SYLVAN ROAD 7120 .2 .4 50 25.4 22.7 112 TIMBER CREEK 7950 .1 1.1 9 13.4 13.6 99 YOUNTS PEAK 8350 11.1 10.8 103 20.9 21.3 98 ----- ----- Basin wide percent of average 77 101 SHOSHONE RIVER BLACKWATER 9780 26.9 27.7 97 30.9 28.0 110 EVENING STAR 9200 25.0 29.6 84 40.1 33.4 120 KIRWIN 9550 5.4 8.2 66 20.0 16.8 119 MARQUETTE 8760 .0 6.2 0 13.7 17.1 80 SYLVAN LAKE 8420 -M 15.5 * 30.4 28.0 109 SYLVAN ROAD 7120 .2 .4 50 25.4 22.7 112 YOUNTS PEAK 8350 11.1 10.8 103 20.9 21.3 98 ----- ----- Basin wide percent of average 83 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .1 0 13.0 13.5 96 BIG GOOSE 7990 .0 6.2 0 16.9 15.8 107 BONE SPRINGS DIV 9350 9.6 12.2 79 18.9 21.5 88 BURGESS JUNCTION 7880 3.5 5.9 59 16.3 17.9 91 CLOUD PEAK RESERVOIR 9860 11.5 11.2 103 22.1 20.8 106 DOME LAKE 8880 .3 5.7 5 20.4 19.9 103 GRAVE SPRINGS 8550 .0 2.9 0 13.2 15.5 85 HANSEN SAWMILL 8360 .0 .7 0 13.4 13.4 100 MIDDLE POWDER 7760 .0 6.0 0 14.4 18.5 78 POWDER RIVER PASS 9480 3.9 4.3 91 19.7 18.8 105 SUCKER CREEK 8880 6.4 6.5 98 21.9 20.8 105 TIE CREEK 6870 .0 .0 100 17.9 16.5 108 ----- ----- Basin wide percent of average 57 98 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 19.1 17.1 112 COLE CANYON 5910 .0 .0 100 15.5 12.2 127 NORTH RAPID CREEK 6130 -M .0 * 18.3 13.5 136 ----- ----- Basin wide percent of average * 124 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 5.8 2 33.6 31.7 106 DIVIDE PEAK 8880 1.6 7.0 23 34.5 26.9 128 ELK RIVER 8700 .2 3.1 6 26.9 25.4 106 JOE WRIGHT 10120 -M 20.6 * -M 34.0 * NORTH FRENCH CREEK 10130 -M 28.7 * -M 33.4 * OLD BATTLE 10000 33.2 30.5 109 48.5 43.5 111 SAGE CREEK BASIN 7850 .0 4.1 0 20.1 15.6 129 SOUTH BRUSH CREEK 8440 .0 3.3 0 23.3 23.0 101 TOWER 10500 35.6 47.6 75 51.3 49.1 104 WEBBER SPRINGS 9250 6.3 11.1 57 36.9 34.0 109 WILLOW CREEK PASS 9540 .1 6.4 2 17.9 18.1 99 ----- ----- Basin wide percent of average 65 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.7 16.6 64 28.6 30.4 94 CASPER MTN. 7900 .0 6.8 0 20.2 23.2 87 DEADMAN HILL 10220 12.2 14.6 84 24.3 24.0 101 DEER PARK 9700 6.6 13.2 50 24.2 30.1 80 LAPRELE CREEK 8375 .0 1.7 0 17.2 19.4 89 RENO HILL 8400 .5 5.6 9 22.5 23.9 94 ROACH 9700 2.0 8.9 22 25.6 25.6 100 SAND LAKE 10050 29.6 30.9 96 37.7 33.4 113 SOUTH PASS 9040 1.3 9.2 14 21.0 25.4 83 WINDY PEAK 7900 .6 .5 120 15.6 16.3 96 ----- ----- Basin wide percent of average 59 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 23.7 20.5 116 DIVIDE PEAK 8880 1.6 7.0 23 34.5 26.9 128 OLD BATTLE 10000 33.2 30.5 109 48.5 43.5 111 SANDSTONE RS 8150 .1 1.1 9 26.3 24.3 108 WHISKEY PARK 8950 -M 19.7 * -M 37.1 * ----- ----- Basin wide percent of average 90 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 .1 4.7 2 18.3 18.0 102 BLIND BULL SUM 8650 26.0 21.3 122 26.3 27.5 96 EAST RIM DIVIDE 7930 .0 4.9 0 15.4 15.6 99 ELKHART PARK G.S. 9400 2.5 6.0 42 19.2 18.4 104 GROS VENTRE SUMMIT 8750 .7 6.4 11 19.1 17.1 112 GUNSIGHT PASS 9820 11.0 -M * 21.0 -M * KENDALL R.S. 7740 .1 .0 17.4 18.2 96 LOOMIS PARK 8240 .1 5.5 2 22.6 22.0 103 NEW FORK LAKE 8340 .0 .0 100 15.3 15.4 99 SNIDER BASIN 8060 .0 3.0 0 18.5 20.0 92 SPRING CREEK DIVIDE 9000 20.0 19.5 103 33.3 32.5 102 TRIPLE PEAK 8500 7.3 10.2 72 34.1 31.3 109 ----- ----- Basin wide percent of average 70 101 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 16.3 16.5 99 HEWINTA 9519 .0 1.6 0 17.6 19.8 89 HICKERSON PARK 9145 .0 .4 0 14.3 12.1 118 HOLE-IN-ROCK 9150 .0 .3 0 13.1 11.7 112 INDIAN CREEK 9425 -M 18.8 * 27.7 31.9 87 KELLEY R.S. 8180 .6 4.7 13 22.6 25.7 88 STEEL CREEK PARK 10200 7.4 14.9 50 21.4 22.6 95 ----- ----- Basin wide percent of average 37 95 UPPER BEAR RIVER BUG LAKE 7950 .2 5.5 4 22.6 24.6 92 HAYDEN FORK 9212 .1 3.4 3 27.6 27.8 99 KELLEY R.S. 8180 .6 4.7 13 22.6 25.7 88 LILY LAKE 9156 .0 3.1 0 21.8 23.5 93 MONTE CRISTO 8960 7.5 17.0 44 32.4 33.4 97 SALT RIVER SUMMIT 7760 .2 .0 21.1 23.6 89 TRIAL LAKE 9992 7.0 18.5 38 30.4 32.5 94 ----- ----- Basin wide percent of average 30 93 ----------------------------------------------------------------------------- -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 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.