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 17 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 * 22.3 24.2 92 BLACK BEAR 8170 24.0 35.3 68 37.6 44.3 85 BLIND BULL SUM 8650 15.2 21.5 71 17.2 23.0 75 COTTONWOOD CREEK 7670 4.4 8.9 49 26.9 29.6 91 EAST RIM DIVIDE 7930 .0 2.6 0 10.8 14.0 77 GRAND TARGHEE 9260 29.9 44.0 68 31.6 36.7 86 GRANITE CREEK 6770 .0 .0 * 18.8 22.7 83 GRASSY LAKE 7265 5.0 20.4 25 34.4 41.5 83 GROS VENTRE SUMMIT 8750 .2 7.6 3 13.2 15.9 83 GUNSIGHT PASS 9820 5.4 11.7 46 14.2 17.5 81 LEWIS LAKE DIVIDE 7850 9.7 24.5 40 34.2 40.6 84 PHILLIPS BENCH 8200 12.6 21.0 60 28.0 32.6 86 SALT RIVER SUMMIT 7760 .0 .6 0* 16.3 19.7 83 SNAKE RIVER STATION 6920 .0 .0 * 23.0 26.2 88 SPRING CREEK DIVIDE 9000 17.1 22.0 78 25.7 27.8 92 THUMB DIVIDE 7980 .1 3.6 3 19.1 22.5 85 TOGWOTEE PASS 9580 15.2 23.8 64 25.6 29.3 87 TWO OCEAN PLATEAU 9240 20.2 29.0 70 28.3 32.4 87 WILLOW CREEK 8380 10.9 18.8 58 35.7 40.4 88 YOUNTS PEAK 8350 6.5 12.9 50 14.3 19.2 74 ----- ----- Basin wide percent 57 85 MADISON-GALLATIN BLACK BEAR 8170 24.0 35.3 68 37.6 44.3 85 CANYON 7870 .4 4.2 10 14.6 19.6 74 MADISON PLATEAU 7750 6.2 15.9 39 26.0 31.1 84 WEST YELLOWSTONE 6700 .0 .0 * 14.3 17.4 82 WHISKEY CREEK 6800 .0 7.6 0 19.7 24.0 82 ----- ----- Basin wide percent 49 82 YELLOWSTONE BEARTOOTH LAKE 9360 15.8 22.3 71 20.8 23.9 87 BURNT MTN 5880 .0 .0 * 13.4 18.9 71 CANYON 7870 .4 4.2 10 14.6 19.6 74 COLE CREEK 7850 8.1 16.8 48 12.6 19.2 66 EVENING STAR 9200 13.9 24.9 56 31.7 32.9 96 FISHER CREEK 9100 26.3 33.6 78 34.1 37.9 90 NORTHEAST ENTRANCE 7350 .0 .0 * 12.7 15.3 83 PARKER PEAK 9400 10.8 20.9 52 23.7 22.1 107 SYLVAN LAKE 8420 5.4 16.3 33 25.8 27.2 95 THUMB DIVIDE 7980 .1 3.6 3 19.1 22.5 85 TWO OCEAN PLATEAU 9240 20.2 29.0 70 28.3 32.4 87 WHITE MILL 8700 16.2 23.7 68 24.7 28.6 86 WOLVERINE 7650 .0 .0 * 12.4 15.3 81 ----- ----- Basin wide percent 60 87 WIND RIVER BURROUGHS CREEK 8750 6.2 10.8 57 13.2 19.6 67 CASTLE CREEK 8400 .1 -M * 9.8 -M * COLD SPRINGS 9630 .0 .0 * 10.5 14.2 74 DEER PARK 9700 5.5 12.4 44 16.9 25.7 66 HOBBS PARK 10100 8.7 14.4 60 14.7 19.0 77 KIRWIN 9550 4.0 9.7 41 14.4 15.6 92 LITTLE WARM 9370 .0 4.9 0 13.3 17.1 78 OWL CREEK 8975 .0 .0 * 8.5 9.4 90 SOUTH PASS 9040 1.0 9.2 11 12.4 22.2 56 ST. LAWRENCE ALT 8620 .0 .0 * 10.9 13.2 83 TOGWOTEE PASS 9580 15.2 23.8 64 25.6 29.3 87 TOWNSEND CREEK 8700 .0 .3 0* 12.8 16.8 76 ----- ----- Basin wide percent 47 76 BIGHORN BASIN BALD MTN. 9380 11.2 20.3 55 13.2 21.8 61 BEAR TRAP MEADOW 8200 .0 .0 * 11.7 12.4 94 BONE SPRINGS DIV 9350 11.1 15.3 73 15.0 20.5 73 GRAVE SPRINGS 8550 .3 5.2 6 10.4 14.8 70 KIRWIN 9550 4.0 9.7 41 14.4 15.6 92 MARQUETTE 8760 1.0 -M * 13.0 -M * MIDDLE POWDER 7760 2.5 7.7 32 16.8 16.0 105 OWL CREEK 8975 .0 .0 * 8.5 9.4 90 POWDER RIVER PASS 9480 7.6 7.4 103 17.9 17.0 105 SHELL CREEK 9580 12.8 16.1 80 17.3 18.3 95 TIMBER CREEK 7950 .0 .0 * 11.5 11.9 97 ----- ----- Basin wide percent 61 87 SHOSHONE RIVER BLACKWATER 9780 19.9 24.9 80 26.8 25.6 105 EVENING STAR 9200 13.9 24.9 56 31.7 32.9 96 MARQUETTE 8760 1.0 -M * 13.0 -M * SYLVAN ROAD 7120 .0 .0 * 16.8 20.0 84 YOUNTS PEAK 8350 6.5 12.9 50 14.3 19.2 74 ----- ----- Basin wide percent 64 92 POWDER RIVER BEAR TRAP MEADOW 8200 .0 .0 * 11.7 12.4 94 CLOUD PEAK RESERVOIR 9860 11.1 15.8 70 16.1 19.3 83 GRAVE SPRINGS 8550 .3 5.2 6 10.4 14.8 70 HANSEN SAWMILL 8360 .0 .0 * 11.6 12.6 92 MIDDLE POWDER 7760 2.5 7.7 32 16.8 16.0 105 POWDER RIVER PASS 9480 7.6 7.4 103 17.9 17.0 105 SOLDIER PARK 8720 .0 -M * 11.1 -M * ----- ----- Basin wide percent 60 92 TONGUE RIVER BIG GOOSE 7990 .4 7.5 5 11.9 16.8 71 BONE SPRINGS DIV 9350 11.1 15.3 73 15.0 20.5 73 BURGESS JUNCTION 7880 5.9 9.8 60 12.6 16.7 75 DOME LAKE 8880 5.3 8.5 62 13.6 18.7 73 LITTLE GOOSE 8870 2.3 -M * 15.6 -M * SUCKER CREEK 8880 6.9 10.3 67 16.2 19.9 81 TIE CREEK 6870 .0 .0 * 13.8 16.9 82 ----- ----- Basin wide percent 58 76 BELLE FOURCHE COLE CANYON 5910 .0 .0 * 10.9 14.6 75 ----- ----- Basin wide percent * 75 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 .0 * 14.3 16.4 87 NORTH RAPID CREEK 6130 .0 .0 * 12.3 14.3 86 ----- ----- Basin wide percent * 87 UPPER N. PLATTE ARAPAHO RIDGE 10960 17.1 20.5 83 25.1 28.4 88 BLACKHALL MTN 9820 21.9 -M * 31.7 -M * COLUMBINE 9160 2.2 6.4 34 27.7 30.4 91 DIVIDE PEAK 8880 .0 8.6 0 22.0 26.2 84 JOE WRIGHT 10120 19.2 22.3 86 32.9 32.5 101 LAPRELE CREEK 8375 .1 .0 * 11.2 16.6 67 MED BOW 10500 -M -M * 33.8 -M * NORTH FRENCH CREEK 10130 18.1 31.3 58 27.5 33.4 82 NEVER SUMMER 10280 19.8 21.7 91 18.3 -M * OLD BATTLE 10000 25.6 33.9 76 33.4 41.8 80 RAWAH 9020 1.7 .9 189* 19.6 18.8 104 SAGE CREEK BASIN 7850 -M .0 * 11.8 17.2 69 SAND LAKE 10050 23.1 29.3 79 27.7 31.5 88 SOUTH BRUSH CREEK 8440 .0 .5 0* 15.4 19.8 78 TOWER 10500 31.1 49.0 63 -M 47.5 * WEBBER SPRINGS 9250 10.9 14.8 74 26.3 31.8 83 WILLOW CREEK PASS 9540 13.9 10.6 131 19.9 17.1 116 ZIRKEL 9340 10.8 14.3 76 33.0 33.3 99 ----- ----- Basin wide percent 73 88 SWEETWATER DEER PARK 9700 5.5 12.4 44 16.9 25.7 66 LARSEN CREEK 9000 .1 -M * 12.3 -M * SOUTH PASS 9040 1.0 9.2 11 12.4 22.2 56 ----- ----- Basin wide percent 30 61 LOWER N. PLATTE CASPER MTN. 7900 1.5 7.4 20 11.7 20.1 58 LAPRELE CREEK 8375 .1 .0 * 11.2 16.6 67 RENO HILL 8400 3.5 6.4 55 16.4 21.0 78 WINDY PEAK 7900 .0 .0 * 11.9 14.4 83 ----- ----- Basin wide percent 37 71 LARAMIE RIVER BROOKLYN LAKE 10240 12.6 18.7 67 22.3 26.9 83 CINNABAR PARK 9574 10.7 14.4 74 22.9 29.4 78 CROW CREEK 8330 .0 .0 * 13.4 15.0 89 DEADMAN HILL 10220 15.7 17.9 88 20.6 22.7 91 RAWAH 9020 1.7 .9 189* 19.6 18.8 104 ROACH 9700 11.1 13.1 85 21.6 24.3 89 ----- ----- Basin wide percent 80 88 S. PLATTE BLACK MOUNTAIN 8920 1.8 -M * 16.8 -M * CROW CREEK 8330 .0 .0 * 13.4 15.0 89 DEADMAN HILL 10220 15.7 17.9 88 20.6 22.7 91 ----- ----- Basin wide percent 88* 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .3 .0 * 13.6 18.5 74 DIVIDE PEAK 8880 .0 8.6 0 22.0 26.2 84 ELK RIVER 8700 .0 1.2 0* 20.1 24.4 82 LITTLE SNAKE RIVER 8915 9.4 16.5 57 30.1 35.0 86 OLD BATTLE 10000 25.6 33.9 76 33.4 41.8 80 SAGE CREEK BASIN 7850 -M .0 * 11.8 17.2 69 SANDSTONE RS 8150 -M .0 * 14.9 22.3 67 WHISKEY PARK 8950 13.8 23.8 58 30.7 33.7 91 ----- ----- Basin wide percent 58 81 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 6.1 0 12.4 16.6 75 BLIND BULL SUM 8650 15.2 21.5 71 17.2 23.0 75 EAST RIM DIVIDE 7930 .0 2.6 0 10.8 14.0 77 ELKHART PARK G.S. 9400 .0 7.5 0 11.7 16.5 71 GROS VENTRE SUMMIT 8750 .2 7.6 3 13.2 15.9 83 GUNSIGHT PASS 9820 5.4 11.7 46 14.2 17.5 81 KENDALL R.S. 7740 .0 .0 * 12.0 16.6 72 LOOMIS PARK 8240 .1 4.8 2 16.1 20.4 79 NEW FORK LAKE 8340 .0 .4 0* 8.9 13.4 66 POCKET CREEK 9360 -M -M * 12.1 -M * SNIDER BASIN 8060 .0 2.9 0 15.3 16.6 92 SPRING CREEK DIVIDE 9000 17.1 22.0 78 25.7 27.8 92 TRIPLE PEAK 8500 6.0 11.1 54 27.2 30.0 91 ----- ----- Basin wide percent 45 81 LOWER GREEN RIVER BLACKS FORK JCT 8870 .3 -M * 13.0 -M * BUCK PASTURE 9700 3.9 -M * 18.7 -M * EF BLACKS FORK GS 9308 1.2 -M * 14.3 -M * HAMS FORK 7840 .0 .0 * 11.7 14.2 82 HEWINTA 9519 .0 .0 * 15.6 17.6 89 HICKERSON PARK 9145 .1 .0 * 12.6 13.3 95 HOLE-IN-ROCK 9150 .0 .0 * 13.8 12.8 108 INDIAN CREEK 9425 12.3 20.5 60 21.9 26.8 82 KELLEY R.S. 8180 .0 5.1 0 16.1 21.6 75 SPIRIT LK 10223 5.0 -M * 18.4 -M * STEEL CREEK PARK 10200 11.9 15.8 75 18.9 20.8 91 ----- ----- Basin wide percent 59* 87 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 13.4 -M * BUG LAKE 7950 .3 8.4 4 18.5 23.2 80 BURTS MILLER RANCH 8000 .1 -M * 8.8 -M * CHALK CREEK #1 8993 9.4 18.0 52 24.3 30.6 79 HAYDEN FORK 9212 .1 1.1 9* 19.7 25.6 77 KELLEY R.S. 8180 .0 5.1 0 16.1 21.6 75 LILY LAKE 9156 .1 .0 * 15.4 21.2 73 MONTE CRISTO 8960 6.9 17.5 39 25.0 31.4 80 SALT RIVER SUMMIT 7760 .0 .6 0* 16.3 19.7 83 ----- ----- Basin wide percent 33* 78 ----------------------------------------------------------------------------- -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.