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: APRIL 6 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.7 18.0 93 24.3 22.1 110 BLACK BEAR 8170 -M 40.4 * 42.0 41.8 100 BLIND BULL SUM 8650 23.3 28.7 81 17.4 23.0 76 COTTONWOOD CREEK 7670 17.2 24.4 70 24.5 28.5 86 EAST RIM DIVIDE 7930 7.5 13.6 55 11.5 12.5 92 GRAND TARGHEE 9260 38.1 -M * 30.2 -M * GRANITE CREEK 6770 12.3 18.3 67 16.6 20.5 81 GRASSY LAKE 7265 32.3 36.8 88 38.7 37.2 104 GROS VENTRE SUMMIT 8750 8.5 14.6 58 10.6 13.4 79 GUNSIGHT PASS 9820 12.3 -M * 14.5 -M * LEWIS LAKE DIVIDE 7850 32.2 36.4 88 35.4 38.0 93 PHILLIPS BENCH 8200 24.3 29.9 81 25.8 30.0 86 SALT RIVER SUMMIT 7760 8.5 14.9 57 11.5 19.5 59 SNAKE RIVER STATION 6920 15.0 19.0 79 25.3 23.0 110 SPRING CREEK DIVIDE 9000 22.8 27.6 83 22.5 27.4 82 THUMB DIVIDE 7980 16.7 19.3 87 19.0 19.6 97 TOGWOTEE PASS 9580 21.9 25.8 85 24.2 25.6 95 TWO OCEAN PLATEAU 9240 34.0 29.2 116 28.3 28.7 99 WILLOW CREEK 8380 23.0 31.2 74 32.0 33.4 96 YOUNTS PEAK 8350 15.7 17.6 89 15.8 16.7 95 ----- ----- Basin wide percent of average 82 92 MADISON-GALLATIN BLACK BEAR 8170 -M 40.4 * 42.0 41.8 100 CANYON 7870 12.2 14.0 87 15.1 16.0 94 MADISON PLATEAU 7750 25.7 25.9 99 31.0 27.8 112 WEST YELLOWSTONE 6700 8.6 12.5 69 17.5 13.3 132 WHISKEY CREEK 6800 15.9 17.7 90 23.2 21.7 107 ----- ----- Basin wide percent of average 89 107 YELLOWSTONE BEARTOOTH LAKE 9360 25.2 24.3 104 24.4 20.8 117 BURNT MTN 5880 .4 6.3 6 11.6 16.1 72 CANYON 7870 12.2 14.0 87 15.1 16.0 94 COLE CREEK 7850 14.0 17.1 82 11.5 17.5 66 EVENING STAR 9200 29.6 30.8 96 32.3 26.2 123 FISHER CREEK 9100 36.9 36.1 102 35.1 37.7 93 NORTHEAST ENTRANCE 7350 6.9 11.2 62 -M 13.1 * PARKER PEAK 9400 24.4 22.4 109 23.4 16.9 138 SYLVAN LAKE 8420 17.9 23.3 77 25.1 21.7 116 THUMB DIVIDE 7980 16.7 19.3 87 19.0 19.6 97 TWO OCEAN PLATEAU 9240 34.0 29.2 116 28.3 28.7 99 WHITE MILL 8700 23.6 25.1 94 24.2 28.0 86 WOLVERINE 7650 7.0 11.7 60 13.2 13.2 100 ----- ----- Basin wide percent of average 92 100 WIND RIVER BURROUGHS CREEK 8750 13.6 14.9 91 14.4 16.9 85 CASTLE CREEK 8400 4.4 -M * 8.7 -M * COLD SPRINGS 9630 4.1 8.7 47 9.3 11.2 83 DEER PARK 9700 10.6 17.3 61 17.6 22.8 77 HOBBS PARK 10100 13.7 15.8 87 13.5 13.5 100 KIRWIN 9550 11.5 11.8 97 14.1 11.7 121 LITTLE WARM 9370 7.8 12.3 63 11.6 13.9 83 OWL CREEK 8975 .2 5.7 4 5.6 6.2 90 SOUTH PASS 9040 12.9 17.2 75 13.5 19.2 70 ST. LAWRENCE ALT 8620 .1 7.5 1 7.7 9.3 83 TOGWOTEE PASS 9580 21.9 25.8 85 24.2 25.6 95 TOWNSEND CREEK 8700 6.3 9.5 66 11.2 12.2 92 ----- ----- Basin wide percent of average 70 88 BIGHORN BASIN BALD MTN. 9380 20.7 20.5 101 15.7 18.1 87 BEAR TRAP MEADOW 8200 3.9 5.1 76 9.3 8.7 107 BONE SPRINGS DIV 9350 19.8 16.9 117 15.9 15.2 105 GRAVE SPRINGS 8550 6.7 9.9 68 10.4 10.2 102 KIRWIN 9550 11.5 11.8 97 14.1 11.7 121 MARQUETTE 8760 7.5 -M * 11.6 10.3 113 MIDDLE POWDER 7760 9.6 12.5 77 11.2 12.9 87 OWL CREEK 8975 .2 5.7 4 5.6 6.2 90 POWDER RIVER PASS 9480 9.8 11.3 87 15.5 12.9 120 SHELL CREEK 9580 18.1 15.3 118 15.9 13.9 114 TIMBER CREEK 7950 .3 5.9 5 9.1 7.8 117 ----- ----- Basin wide percent of average 88 105 SHOSHONE RIVER BLACKWATER 9780 24.8 25.5 97 24.6 21.4 115 EVENING STAR 9200 29.6 30.8 96 32.3 26.2 123 MARQUETTE 8760 7.5 -M * 11.6 10.3 113 SYLVAN ROAD 7120 6.2 12.8 48 18.0 18.2 99 YOUNTS PEAK 8350 15.7 17.6 89 15.8 16.7 95 ----- ----- Basin wide percent of average 88 110 POWDER RIVER BEAR TRAP MEADOW 8200 3.9 5.1 76 9.3 8.7 107 CLOUD PEAK RESERVOIR 9860 13.6 14.1 96 15.2 13.5 113 GRAVE SPRINGS 8550 6.7 9.9 68 10.4 10.2 102 HANSEN SAWMILL 8360 .0 6.5 0 8.5 8.6 99 MIDDLE POWDER 7760 9.6 12.5 77 11.2 12.9 87 POWDER RIVER PASS 9480 9.8 11.3 87 15.5 12.9 120 SOLDIER PARK 8720 7.4 -M * 9.9 -M * ----- ----- Basin wide percent of average 73 105 TONGUE RIVER BIG GOOSE 7990 7.8 11.4 68 14.4 9.2 157 BONE SPRINGS DIV 9350 19.8 16.9 117 15.9 15.2 105 BURGESS JUNCTION 7880 11.7 12.3 95 14.2 12.7 112 DOME LAKE 8880 12.5 13.1 95 15.1 13.7 110 LITTLE GOOSE 8870 7.5 -M * 16.4 -M * SUCKER CREEK 8880 11.4 12.5 91 15.6 14.2 110 TIE CREEK 6870 .0 6.3 0 13.8 10.4 133 ----- ----- Basin wide percent of average 87 118 BELLE FOURCHE COLE CANYON 5910 .0 7.1 0 8.2 7.0 117 ----- ----- Basin wide percent of average 0 117 CHEYENNE RIVER BASIN BLIND PARK 6890 .2 8.2 2 10.3 11.5 90 NORTH RAPID CREEK 6130 .1 8.7 1 8.0 8.9 90 ----- ----- Basin wide percent of average 2 90 UPPER N. PLATTE ARAPAHO RIDGE 10960 14.6 23.6 62 16.6 27.6 60 BLACKHALL MTN 9820 20.6 -M * 23.3 -M * COLUMBINE 9160 9.6 25.1 38 19.6 26.0 75 DIVIDE PEAK 8880 8.9 20.4 44 18.9 21.4 88 JOE WRIGHT 10120 11.0 22.3 49 18.6 25.7 72 LAPRELE CREEK 8375 4.6 11.0 42 11.9 13.1 91 NORTH FRENCH CREEK 10130 16.8 30.7 55 19.2 25.5 75 NEVER SUMMER 10280 11.0 21.2 52 10.9 24.4 45 OLD BATTLE 10000 22.6 33.3 68 26.8 35.6 75 RAWAH 9020 .4 15.7 3 11.1 17.0 65 SAGE CREEK BASIN 7850 .6 11.8 5 10.3 12.4 83 SAND LAKE 10050 22.7 33.6 68 22.8 25.0 91 SOUTH BRUSH CREEK 8440 -M 13.4 * 11.4 17.0 67 TOWER 10500 27.5 47.2 58 30.7 39.6 78 WEBBER SPRINGS 9250 12.7 26.4 48 21.1 27.6 76 WILLOW CREEK PASS 9540 -M 12.7 * 9.2 13.3 69 ZIRKEL 9340 -M 25.9 * -M 26.8 * ----- ----- Basin wide percent of average 51 74 SWEETWATER DEER PARK 9700 10.6 17.3 61 17.6 22.8 77 LARSEN CREEK 9000 7.8 -M * 14.0 -M * SOUTH PASS 9040 12.9 17.2 75 13.5 19.2 70 ----- ----- Basin wide percent of average 68 74 LOWER N. PLATTE CASPER MTN. 7900 16.0 15.4 104 18.3 15.2 120 LAPRELE CREEK 8375 4.6 11.0 42 11.9 13.1 91 RENO HILL 8400 13.8 15.0 92 17.9 15.8 113 WINDY PEAK 7900 2.9 8.4 35 8.7 11.0 79 ----- ----- Basin wide percent of average 75 103 LARAMIE RIVER BROOKLYN LAKE 10240 14.6 24.8 59 18.7 22.9 82 CINNABAR PARK 9574 11.3 18.0 63 19.2 20.7 93 CROW CREEK 8330 .8 9.2 9 10.1 10.4 97 DEADMAN HILL 10220 16.1 17.1 94 15.5 17.6 88 RAWAH 9020 .4 15.7 3 11.1 17.0 65 ROACH 9700 11.3 17.8 63 16.2 19.3 84 ----- ----- Basin wide percent of average 53 84 S. PLATTE BLACK MOUNTAIN 8920 8.9 -M * 12.6 -M * CROW CREEK 8330 .8 9.2 9 10.1 10.4 97 DEADMAN HILL 10220 16.1 17.1 94 15.5 17.6 88 ----- ----- Basin wide percent of average 64 91 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.3 * 11.8 16.4 72 DIVIDE PEAK 8880 8.9 20.4 44 18.9 21.4 88 ELK RIVER 8700 -M 20.0 * 15.4 20.2 76 LITTLE SNAKE RIVER 8915 11.6 -M * 24.1 -M * OLD BATTLE 10000 22.6 33.3 68 26.8 35.6 75 SAGE CREEK BASIN 7850 .6 11.8 5 10.3 12.4 83 SANDSTONE RS 8150 -M 14.4 * 11.8 19.3 61 WHISKEY PARK 8950 15.3 30.7 50 23.8 29.6 80 ----- ----- Basin wide percent of average 49 77 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.2 15.0 88 13.9 13.8 101 BLIND BULL SUM 8650 23.3 28.7 81 17.4 23.0 76 EAST RIM DIVIDE 7930 7.5 13.6 55 11.5 12.5 92 ELKHART PARK G.S. 9400 13.8 13.8 100 15.2 13.8 110 GROS VENTRE SUMMIT 8750 8.5 14.6 58 10.6 13.4 79 GUNSIGHT PASS 9820 12.3 -M * 14.5 -M * KENDALL R.S. 7740 11.2 14.4 78 14.7 15.0 98 LOOMIS PARK 8240 10.9 17.5 62 16.5 18.0 92 NEW FORK LAKE 8340 8.7 11.5 76 10.7 11.7 91 POCKET CREEK 9360 10.1 -M * 12.4 -M * SNIDER BASIN 8060 10.7 14.9 72 13.0 16.7 78 SPRING CREEK DIVIDE 9000 22.8 27.6 83 22.5 27.4 82 TRIPLE PEAK 8500 18.5 25.6 72 25.1 25.6 98 ----- ----- Basin wide percent of average 76 90 LOWER GREEN RIVER BLACKS FORK JCT 8870 1.2 -M * 11.1 -M * BUCK PASTURE 9700 .1 -M * 4.2 -M * EF BLACKS FORK GS 9308 5.0 -M * 9.6 -M * HAMS FORK 7840 5.4 11.4 47 9.8 12.7 77 HEWINTA 9519 6.1 12.5 49 13.2 15.2 87 HICKERSON PARK 9145 3.5 8.1 43 12.7 8.3 153 HOLE-IN-ROCK 9150 4.9 7.4 66 12.7 7.8 163 INDIAN CREEK 9425 19.0 28.9 66 18.0 26.4 68 KELLEY R.S. 8180 11.9 17.4 68 15.2 21.1 72 SPIRIT LK 10223 9.8 -M * 18.0 -M * STEEL CREEK PARK 10200 11.1 16.4 68 14.9 17.0 88 ----- ----- Basin wide percent of average 61 89 UPPER BEAR RIVER BEAR RIVER RS 8500 .0 -M * 10.5 -M * BUG LAKE 7950 13.8 21.6 64 15.8 19.9 79 BURTS MILLER RANCH 8000 .4 -M * 9.6 -M * CHALK CREEK #1 8993 14.1 25.4 56 19.0 26.2 73 HAYDEN FORK 9212 6.4 16.9 38 17.9 21.8 82 KELLEY R.S. 8180 11.9 17.4 68 15.2 21.1 72 LILY LAKE 9156 7.3 14.3 51 12.6 18.2 69 MONTE CRISTO 8960 15.8 30.4 52 19.0 26.5 72 SALT RIVER SUMMIT 7760 8.5 14.9 57 11.5 19.5 59 ----- ----- Basin wide percent of average 55 72 ----------------------------------------------------------------------------- -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.