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 6 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.3 10.8 40 15.9 24.7 64 COTTONWOOD CREEK 7670 15.5 18.3 85 26.3 32.5 81 GRAND TARGHEE 9260 44.0 -M * 34.3 -M * GRANITE CREEK 6770 4.8 11.5 42 14.8 22.7 65 GRASSY LAKE 7265 20.5 31.7 65 30.5 41.5 73 GROS VENTRE SUMMIT 8750 8.7 12.5 70 11.2 15.6 72 GUNSIGHT PASS 9820 10.6 -M * 13.6 -M * LEWIS LAKE DIVIDE 7850 18.7 33.3 56 25.9 42.2 61 PHILLIPS BENCH 8200 18.5 28.3 65 24.2 33.6 72 SALT RIVER SUMMIT 7760 7.2 9.2 78 14.9 21.9 68 SNAKE RIVER STATION 6920 2.0 10.5 19 19.4 25.9 75 SPRING CREEK DIVIDE 9000 21.2 27.9 76 21.5 30.6 70 THUMB DIVIDE 7980 7.8 13.6 57 16.3 22.4 73 TOGWOTEE PASS 9580 22.5 28.1 80 -M 29.5 * TWO OCEAN PLATEAU 9240 26.3 31.7 83 22.0 32.7 67 WILLOW CREEK 8380 21.7 29.5 74 33.5 38.4 87 ----- ----- Basin wide percent of average 67 72 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 17.5 26.0 67 17.0 24.0 71 BLACK BEAR 8170 27.8 39.2 71 31.0 46.5 67 CANYON 7870 7.7 10.1 76 13.9 18.1 77 FISHER CREEK 9100 26.5 37.6 70 28.3 42.6 66 MADISON PLATEAU 7750 17.1 23.1 74 24.4 30.9 79 NORTHEAST ENTRANCE 7350 .5 5.9 8 10.9 15.2 72 PARKER PEAK 9400 20.7 24.5 84 15.9 20.0 80 SYLVAN LAKE 8420 13.4 23.0 58 21.3 25.2 85 THUMB DIVIDE 7980 7.8 13.6 57 16.3 22.4 73 TWO OCEAN PLATEAU 9240 26.3 31.7 83 22.0 32.7 67 WHISKEY CREEK 6800 9.6 13.8 70 15.8 24.6 64 WHITE MILL 8700 19.0 26.2 73 19.6 31.8 62 WOLVERINE 7650 .2 6.2 3 9.2 15.6 59 ----- ----- Basin wide percent of average 69 70 WIND RIVER BURROUGHS CREEK 8750 10.2 12.6 81 11.2 19.8 57 COLD SPRINGS 9630 6.0 4.6 130 13.6 14.4 94 DEER PARK 9700 18.4 17.2 107 23.5 27.5 85 HOBBS PARK 10100 20.4 17.7 115 21.4 17.5 122 LITTLE WARM 9370 8.4 10.0 84 12.0 17.3 69 SOUTH PASS 9040 15.3 17.2 89 20.8 23.3 89 ST. LAWRENCE ALT 8620 5.6 5.4 104 14.5 12.6 115 TOGWOTEE PASS 9580 22.5 28.1 80 -M 29.5 * TOWNSEND CREEK 8700 11.6 8.0 145 18.6 16.0 116 ----- ----- Basin wide percent of average 98 91 BIGHORN BASIN BALD MTN. 9380 16.8 23.5 71 13.8 21.9 63 BEAR TRAP MEADOW 8200 3.8 1.9 200 10.7 11.4 94 BLACKWATER 9780 21.6 28.7 75 20.3 25.3 80 BONE SPRINGS DIV 9350 13.2 17.8 74 13.5 18.9 71 EVENING STAR 9200 20.7 33.2 62 25.0 30.5 82 GRAVE SPRINGS 8550 9.9 10.4 95 13.8 13.7 101 KIRWIN 9550 11.2 12.7 88 13.3 14.7 90 MARQUETTE 8760 8.3 10.7 78 12.2 14.3 85 MIDDLE POWDER 7760 12.0 13.6 88 11.3 16.3 69 OWL CREEK 8975 .4 3.6 11 7.9 8.6 92 POWDER RIVER PASS 9480 8.6 9.8 88 14.0 16.3 86 SHELL CREEK 9580 15.2 16.6 92 14.5 17.4 83 SYLVAN LAKE 8420 13.4 23.0 58 21.3 25.2 85 SYLVAN ROAD 7120 .9 7.0 13 15.3 20.9 73 TIMBER CREEK 7950 1.3 4.5 29 9.1 11.0 83 YOUNTS PEAK 8350 12.0 17.8 67 12.4 19.2 65 ----- ----- Basin wide percent of average 72 80 SHOSHONE RIVER BLACKWATER 9780 21.6 28.7 75 20.3 25.3 80 EVENING STAR 9200 20.7 33.2 62 25.0 30.5 82 KIRWIN 9550 11.2 12.7 88 13.3 14.7 90 MARQUETTE 8760 8.3 10.7 78 12.2 14.3 85 SYLVAN LAKE 8420 13.4 23.0 58 21.3 25.2 85 SYLVAN ROAD 7120 .9 7.0 13 15.3 20.9 73 YOUNTS PEAK 8350 12.0 17.8 67 12.4 19.2 65 ----- ----- Basin wide percent of average 66 80 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.8 1.9 200 10.7 11.4 94 BIG GOOSE 7990 9.7 11.0 88 13.7 13.5 101 BONE SPRINGS DIV 9350 13.2 17.8 74 13.5 18.9 71 BURGESS JUNCTION 7880 12.5 12.6 99 14.2 15.9 89 CLOUD PEAK RESERVOIR 9860 15.6 16.0 98 15.5 17.8 87 DOME LAKE 8880 10.5 12.6 83 15.4 17.4 89 GRAVE SPRINGS 8550 9.9 10.4 95 13.8 13.7 101 HANSEN SAWMILL 8360 2.4 4.2 57 10.2 11.4 89 MIDDLE POWDER 7760 12.0 13.6 88 11.3 16.3 69 POWDER RIVER PASS 9480 8.6 9.8 88 14.0 16.3 86 SUCKER CREEK 8880 13.7 12.2 112 17.6 18.0 98 TIE CREEK 6870 1.6 3.4 47 13.4 14.0 96 ----- ----- Basin wide percent of average 90 88 BELLE FOURCHE BLIND PARK 6890 1.5 3.4 44 15.4 14.7 105 COLE CANYON 5910 1.6 3.2 50 13.1 10.1 130 NORTH RAPID CREEK 6130 .2 2.4 8 13.9 11.8 118 ----- ----- Basin wide percent of average 37 116 UPPER N. PLATTE RIVER COLUMBINE 9160 18.2 19.1 95 27.0 29.6 91 DIVIDE PEAK 8880 21.7 17.9 121 28.3 24.8 114 ELK RIVER 8700 14.7 13.0 113 24.0 23.5 102 JOE WRIGHT 10120 22.7 25.1 90 27.1 30.8 88 NORTH FRENCH CREEK 10130 41.1 34.5 119 41.1 30.4 135 OLD BATTLE 10000 40.0 37.3 107 42.5 40.6 105 SAGE CREEK BASIN 7850 8.8 10.4 85 15.6 14.4 108 SOUTH BRUSH CREEK 8440 12.2 9.9 123 23.3 20.7 113 TOWER 10500 40.3 52.4 77 39.3 46.0 85 WEBBER SPRINGS 9250 23.5 23.7 99 33.3 31.7 105 WILLOW CREEK PASS 9540 12.3 13.8 89 15.3 16.1 95 ----- ----- Basin wide percent of average 99 103 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.2 27.5 88 27.0 27.7 97 CASPER MTN. 7900 15.6 16.1 97 18.2 20.3 90 DEADMAN HILL 10220 -M 19.6 * -M 21.5 * DEER PARK 9700 18.4 17.2 107 23.5 27.5 85 LAPRELE CREEK 8375 7.3 6.1 120 16.8 17.0 99 RENO HILL 8400 17.4 13.6 128 23.3 20.9 111 ROACH 9700 20.6 17.6 117 26.3 23.0 114 SAND LAKE 10050 37.4 37.0 101 37.4 30.1 124 SOUTH PASS 9040 15.3 17.2 89 20.8 23.3 89 WINDY PEAK 7900 8.1 3.9 208 15.8 14.0 113 ----- ----- Basin wide percent of average 105 103 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.1 3.5 31 17.9 19.0 94 DIVIDE PEAK 8880 21.7 17.9 121 28.3 24.8 114 OLD BATTLE 10000 40.0 37.3 107 42.5 40.6 105 SANDSTONE RS 8150 8.5 7.9 108 20.7 22.3 93 WHISKEY PARK 8950 27.1 30.0 90 36.1 34.6 104 ----- ----- Basin wide percent of average 102 103 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.7 12.4 70 12.0 16.3 74 BLIND BULL SUM 8650 20.5 27.2 75 15.5 25.6 61 EAST RIM DIVIDE 7930 .4 12.3 3 8.8 14.2 62 ELKHART PARK G.S. 9400 7.3 12.1 60 11.0 16.4 67 GROS VENTRE SUMMIT 8750 8.7 12.5 70 11.2 15.6 72 GUNSIGHT PASS 9820 10.6 -M * 13.6 -M * KENDALL R.S. 7740 .3 8.4 4 10.2 16.8 61 LOOMIS PARK 8240 4.9 13.2 37 12.6 20.3 62 NEW FORK LAKE 8340 1.7 7.3 23 8.0 13.7 58 POCKET CREEK 9360 8.1 -M * 13.7 -M * SNIDER BASIN 8060 6.7 11.5 58 13.6 18.8 72 SPRING CREEK DIVIDE 9000 21.2 27.9 76 21.5 30.6 70 TRIPLE PEAK 8500 16.1 22.3 72 24.3 29.1 84 ----- ----- Basin wide percent of average 58 68 LOWER GREEN RIVER HAMS FORK 7840 .8 4.7 17 11.8 15.1 78 HEWINTA 9519 7.7 8.0 96 16.0 18.2 88 HICKERSON PARK 9145 4.1 4.7 87 13.5 10.5 129 HOLE-IN-ROCK 9150 1.3 3.9 33 12.6 10.1 125 INDIAN CREEK 9425 19.4 27.3 71 19.9 29.9 67 KELLEY R.S. 8180 9.0 12.8 70 16.3 24.0 68 STEEL CREEK PARK 10200 19.0 18.9 101 20.0 20.7 97 ----- ----- Basin wide percent of average 76 86 UPPER BEAR RIVER BUG LAKE 7950 11.5 16.2 71 17.5 22.8 77 HAYDEN FORK 9212 7.7 11.5 67 22.2 25.6 87 KELLEY R.S. 8180 9.0 12.8 70 16.3 24.0 68 LILY LAKE 9156 11.0 9.8 112 18.2 21.5 85 MONTE CRISTO 8960 16.8 27.0 62 21.9 30.9 71 SALT RIVER SUMMIT 7760 7.2 9.2 78 14.9 21.9 68 TRIAL LAKE 9992 20.4 26.0 78 19.7 30.0 66 ----- ----- Basin wide percent of average 74 74 ----------------------------------------------------------------------------- -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.