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 FRIDAY: MAY 10 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 3.1 4.4 70 22.1 23.6 94 BLACK BEAR 8170 33.4 36.8 91 37.3 43.1 87 BLIND BULL SUM 8650 19.4 22.4 87 16.7 22.2 75 COTTONWOOD CREEK 7670 12.2 12.8 95 26.2 28.8 91 EAST RIM DIVIDE 7930 .0 5.9 0 10.6 13.5 79 GRAND TARGHEE 9260 37.2 46.4 80 31.3 36.1 87 GRANITE CREEK 6770 1.7 5.5 31 17.2 22.1 78 GRASSY LAKE 7265 15.4 25.9 59 34.0 40.6 84 GROS VENTRE SUMMIT 8750 7.1 9.6 74 13.2 15.4 86 GUNSIGHT PASS 9820 10.5 12.1 87 13.9 16.9 82 LEWIS LAKE DIVIDE 7850 19.9 29.3 68 34.1 39.7 86 PHILLIPS BENCH 8200 20.1 23.1 87 27.7 31.8 87 SALT RIVER SUMMIT 7760 2.0 4.5 44 16.1 19.1 84 SNAKE RIVER STATION 6920 .0 2.5 0 22.5 25.6 88 SPRING CREEK DIVIDE 9000 23.5 23.7 99 25.5 27.1 94 THUMB DIVIDE 7980 3.7 8.4 44 18.8 21.8 86 TOGWOTEE PASS 9580 22.0 25.4 87 25.3 28.5 89 TWO OCEAN PLATEAU 9240 27.1 29.6 92 27.9 31.2 89 WILLOW CREEK 8380 19.2 21.1 91 34.9 39.2 89 YOUNTS PEAK 8350 12.3 15.4 80 13.9 18.5 75 ----- ----- Basin wide percent 79 86 MADISON-GALLATIN BLACK BEAR 8170 33.4 36.8 91 37.3 43.1 87 CANYON 7870 6.1 7.4 82 14.1 18.8 75 MADISON PLATEAU 7750 14.4 20.0 72 25.9 30.0 86 WEST YELLOWSTONE 6700 .0 .0 * 14.2 16.6 86 WHISKEY CREEK 6800 6.2 10.7 58 19.0 23.1 82 ----- ----- Basin wide percent 80 84 YELLOWSTONE BEARTOOTH LAKE 9360 18.8 23.0 82 20.6 23.1 89 BURNT MTN 5880 .0 .0 * 12.8 17.4 74 CANYON 7870 6.1 7.4 82 14.1 18.8 75 COLE CREEK 7850 13.4 17.2 78 12.1 18.0 67 EVENING STAR 9200 20.7 25.4 81 31.3 31.8 98 FISHER CREEK 9100 30.0 34.3 87 33.9 36.6 93 NORTHEAST ENTRANCE 7350 .0 .9 0* 12.5 14.6 86 PARKER PEAK 9400 18.6 22.0 85 23.5 21.2 111 SYLVAN LAKE 8420 14.2 18.1 78 25.5 26.3 97 THUMB DIVIDE 7980 3.7 8.4 44 18.8 21.8 86 TWO OCEAN PLATEAU 9240 27.1 29.6 92 27.9 31.2 89 WHITE MILL 8700 22.7 24.7 92 24.3 27.5 88 WOLVERINE 7650 .0 .0 * 12.1 14.6 83 ----- ----- Basin wide percent 83 89 WIND RIVER BURROUGHS CREEK 8750 11.4 11.6 98 12.9 18.8 69 CASTLE CREEK 8400 .0 -M * 9.7 -M * COLD SPRINGS 9630 .3 1.5 20 10.3 13.3 77 DEER PARK 9700 11.4 14.4 79 16.7 24.6 68 HOBBS PARK 10100 14.1 15.9 89 14.8 17.8 83 KIRWIN 9550 10.9 10.9 100 14.2 14.8 96 LITTLE WARM 9370 6.3 6.6 95 13.1 16.2 81 OWL CREEK 8975 2.7 .5 540* 8.5 8.6 99 SOUTH PASS 9040 8.5 11.8 72 12.1 21.3 57 ST. LAWRENCE ALT 8620 .0 1.0 0 10.7 12.4 86 TOGWOTEE PASS 9580 22.0 25.4 87 25.3 28.5 89 TOWNSEND CREEK 8700 5.8 3.9 149 12.5 15.8 79 ----- ----- Basin wide percent 90 79 BIGHORN BASIN BALD MTN. 9380 16.3 20.6 79 13.1 21.1 62 BEAR TRAP MEADOW 8200 2.8 .0 * 11.7 11.6 101 BONE SPRINGS DIV 9350 16.4 16.6 99 14.4 19.7 73 GRAVE SPRINGS 8550 6.0 7.7 78 10.3 14.1 73 KIRWIN 9550 10.9 10.9 100 14.2 14.8 96 MARQUETTE 8760 9.4 -M * 12.8 -M * MIDDLE POWDER 7760 10.1 10.8 94 15.8 15.4 103 OWL CREEK 8975 2.7 .5 540* 8.5 8.6 99 POWDER RIVER PASS 9480 13.5 9.0 150 17.9 16.3 110 SHELL CREEK 9580 17.3 16.8 103 17.2 17.6 98 TIMBER CREEK 7950 1.5 1.5 100 11.5 11.0 105 ----- ----- Basin wide percent 103 90 SHOSHONE RIVER BLACKWATER 9780 26.0 24.8 105 26.6 24.6 108 EVENING STAR 9200 20.7 25.4 81 31.3 31.8 98 MARQUETTE 8760 9.4 -M * 12.8 -M * SYLVAN ROAD 7120 .2 1.5 13 16.7 19.3 87 YOUNTS PEAK 8350 12.3 15.4 80 13.9 18.5 75 ----- ----- Basin wide percent 88 94 POWDER RIVER BEAR TRAP MEADOW 8200 2.8 .0 * 11.7 11.6 101 CLOUD PEAK RESERVOIR 9860 16.0 16.8 95 15.8 18.2 87 GRAVE SPRINGS 8550 6.0 7.7 78 10.3 14.1 73 HANSEN SAWMILL 8360 4.5 1.2 375 11.4 11.9 96 MIDDLE POWDER 7760 10.1 10.8 94 15.8 15.4 103 POWDER RIVER PASS 9480 13.5 9.0 150 17.9 16.3 110 SOLDIER PARK 8720 4.4 -M * 10.9 -M * ----- ----- Basin wide percent 116 95 TONGUE RIVER BIG GOOSE 7990 7.0 10.4 67 11.8 15.7 75 BONE SPRINGS DIV 9350 16.4 16.6 99 14.4 19.7 73 BURGESS JUNCTION 7880 10.9 11.4 96 11.9 16.1 74 DOME LAKE 8880 10.9 11.2 97 13.0 17.9 73 LITTLE GOOSE 8870 9.3 -M * 15.5 -M * SUCKER CREEK 8880 13.0 12.6 103 15.8 19.0 83 TIE CREEK 6870 .6 1.5 40 13.6 15.9 86 ----- ----- Basin wide percent 92 77 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 10.7 13.5 79 ----- ----- Basin wide percent * 79 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 14.2 15.5 92 NORTH RAPID CREEK 6130 .0 .0 * 11.9 13.4 89 ----- ----- Basin wide percent * 90 UPPER N. PLATTE ARAPAHO RIDGE 10960 21.9 22.4 98 25.0 27.5 91 BLACKHALL MTN 9820 27.7 -M * 31.7 -M * COLUMBINE 9160 11.8 12.7 93 27.6 29.6 93 DIVIDE PEAK 8880 8.4 14.3 59 21.9 25.5 86 JOE WRIGHT 10120 -M 23.2 * -M 31.4 * LAPRELE CREEK 8375 .8 2.8 29 11.1 16.1 69 MED BOW 10500 -M -M * 33.6 -M * NORTH FRENCH CREEK 10130 24.1 32.7 74 27.4 32.4 85 NEVER SUMMER 10280 22.5 22.2 101 18.0 -M * OLD BATTLE 10000 29.1 36.8 79 33.2 40.8 81 RAWAH 9020 9.2 2.7 341 19.5 18.2 107 SAGE CREEK BASIN 7850 -M .0 * 11.6 16.9 69 SAND LAKE 10050 26.2 31.8 82 27.5 30.5 90 SOUTH BRUSH CREEK 8440 2.7 5.2 52 15.4 19.1 81 TOWER 10500 38.2 51.4 74 -M 46.4 * WEBBER SPRINGS 9250 18.1 19.4 93 26.3 31.1 85 WILLOW CREEK PASS 9540 18.7 13.4 140 19.9 16.5 121 ZIRKEL 9340 20.7 19.7 105 33.0 32.4 102 ----- ----- Basin wide percent 88 89 SWEETWATER DEER PARK 9700 11.4 14.4 79 16.7 24.6 68 LARSEN CREEK 9000 .0 -M * 11.8 -M * SOUTH PASS 9040 8.5 11.8 72 12.1 21.3 57 ----- ----- Basin wide percent 76 63 LOWER N. PLATTE CASPER MTN. 7900 9.4 11.4 82 11.5 19.4 59 LAPRELE CREEK 8375 .8 2.8 29 11.1 16.1 69 RENO HILL 8400 10.2 10.5 97 16.2 20.1 81 WINDY PEAK 7900 1.0 .8 125 11.1 13.9 80 ----- ----- Basin wide percent 84 72 LARAMIE RIVER BROOKLYN LAKE 10240 18.7 21.4 87 22.2 26.0 85 CINNABAR PARK 9574 14.5 17.4 83 23.1 28.2 82 CROW CREEK 8330 .0 .0 * 13.2 14.3 92 DEADMAN HILL 10220 19.3 18.5 104 20.5 21.7 94 RAWAH 9020 9.2 2.7 341 19.5 18.2 107 ROACH 9700 16.7 15.9 105 21.6 23.3 93 ----- ----- Basin wide percent 103 91 S. PLATTE BLACK MOUNTAIN 8920 9.4 -M * 16.8 -M * CROW CREEK 8330 .0 .0 * 13.2 14.3 92 DEADMAN HILL 10220 19.3 18.5 104 20.5 21.7 94 ----- ----- Basin wide percent 104* 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * 13.5 18.0 75 DIVIDE PEAK 8880 8.4 14.3 59 21.9 25.5 86 ELK RIVER 8700 6.9 7.8 88 20.1 23.7 85 LITTLE SNAKE RIVER 8915 16.6 20.4 81 30.0 34.4 87 OLD BATTLE 10000 29.1 36.8 79 33.2 40.8 81 SAGE CREEK BASIN 7850 -M .0 * 11.6 16.9 69 SANDSTONE RS 8150 .0 1.9 0 14.5 21.8 67 WHISKEY PARK 8950 20.7 26.8 77 30.5 32.9 93 ----- ----- Basin wide percent 76 82 UPPER GREEN RIVER BIG SANDY OPENING 9080 -M 8.6 * -M 16.1 * BLIND BULL SUM 8650 19.4 22.4 87 16.7 22.2 75 EAST RIM DIVIDE 7930 .0 5.9 0 10.6 13.5 79 ELKHART PARK G.S. 9400 6.7 9.6 70 11.7 15.9 74 GROS VENTRE SUMMIT 8750 7.1 9.6 74 13.2 15.4 86 GUNSIGHT PASS 9820 10.5 12.1 87 13.9 16.9 82 KENDALL R.S. 7740 .0 .0 * 12.0 16.2 74 LOOMIS PARK 8240 3.3 7.3 45 15.7 19.7 80 NEW FORK LAKE 8340 .0 2.6 0 8.3 12.8 65 POCKET CREEK 9360 6.9 -M * 12.0 -M * SNIDER BASIN 8060 .0 7.4 0 15.5 16.2 96 SPRING CREEK DIVIDE 9000 23.5 23.7 99 25.5 27.1 94 TRIPLE PEAK 8500 14.1 14.9 95 26.3 29.1 90 ----- ----- Basin wide percent 73 83 LOWER GREEN RIVER BLACKS FORK JCT 8870 3.4 -M * 13.1 -M * BUCK PASTURE 9700 10.5 -M * 18.6 -M * EF BLACKS FORK GS 9308 8.5 -M * 13.5 -M * HAMS FORK 7840 .0 .1 0* 11.6 13.8 84 HEWINTA 9519 6.1 2.0 305 15.7 17.1 92 HICKERSON PARK 9145 3.4 .1 3400* 12.7 12.8 99 HOLE-IN-ROCK 9150 5.1 .0 * 13.7 12.3 111 INDIAN CREEK 9425 19.8 21.0 94 21.9 26.0 84 KELLEY R.S. 8180 5.5 8.4 65 16.0 21.0 76 SPIRIT LK 10223 10.6 -M * 18.2 -M * STEEL CREEK PARK 10200 15.8 17.7 89 19.0 20.1 95 ----- ----- Basin wide percent 113* 90 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 13.5 -M * BUG LAKE 7950 6.6 12.2 54 18.4 22.6 81 BURTS MILLER RANCH 8000 .1 -M * 8.8 -M * CHALK CREEK #1 8993 16.5 21.5 77 24.4 29.7 82 HAYDEN FORK 9212 2.9 5.9 49 19.9 24.8 80 KELLEY R.S. 8180 5.5 8.4 65 16.0 21.0 76 LILY LAKE 9156 8.2 5.4 152 15.4 20.5 75 MONTE CRISTO 8960 15.3 21.5 71 25.0 30.6 82 SALT RIVER SUMMIT 7760 2.0 4.5 44 16.1 19.1 84 ----- ----- Basin wide percent 72 80 ----------------------------------------------------------------------------- -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 wide percent 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. Reference period for comparison of conditions is 1981-2010. 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.