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: APRIL 3 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.1 18.1 100 24.3 21.9 111 BLACK BEAR 8170 41.5 40.0 104 41.8 41.3 101 BLIND BULL SUM 8650 22.9 28.5 80 17.3 22.7 76 COTTONWOOD CREEK 7670 18.1 24.3 74 24.4 28.0 87 EAST RIM DIVIDE 7930 8.8 13.4 66 11.4 12.3 93 GRAND TARGHEE 9260 37.7 -M * 29.9 -M * GRANITE CREEK 6770 13.0 18.5 70 16.6 20.3 82 GRASSY LAKE 7265 32.6 36.4 90 38.5 36.7 105 GROS VENTRE SUMMIT 8750 9.0 14.5 62 10.6 13.2 80 GUNSIGHT PASS 9820 13.0 -M * 14.3 -M * LEWIS LAKE DIVIDE 7850 31.7 36.1 88 35.2 37.5 94 PHILLIPS BENCH 8200 24.2 29.5 82 25.7 29.6 87 SALT RIVER SUMMIT 7760 9.2 14.8 62 11.4 19.2 59 SNAKE RIVER STATION 6920 15.9 19.1 83 24.9 22.7 110 SPRING CREEK DIVIDE 9000 22.9 27.2 84 22.5 27.0 83 THUMB DIVIDE 7980 16.9 19.3 88 18.6 19.3 96 TOGWOTEE PASS 9580 22.1 25.4 87 24.1 25.2 96 TWO OCEAN PLATEAU 9240 33.6 28.7 117 28.0 28.3 99 WILLOW CREEK 8380 24.6 30.9 80 31.9 32.9 97 YOUNTS PEAK 8350 15.9 17.5 91 15.8 16.5 96 ----- ----- Basin wide percent of average 86 93 MADISON-GALLATIN BLACK BEAR 8170 41.5 40.0 104 41.8 41.3 101 CANYON 7870 12.7 13.9 91 15.0 15.8 95 MADISON PLATEAU 7750 25.8 25.6 101 30.8 27.4 112 WEST YELLOWSTONE 6700 9.7 12.7 76 17.4 13.2 132 WHISKEY CREEK 6800 16.0 17.5 91 23.2 21.4 108 ----- ----- Basin wide percent of average 96 108 YELLOWSTONE BEARTOOTH LAKE 9360 24.9 23.8 105 24.3 20.5 119 BURNT MTN 5880 .0 6.3 0 11.4 15.7 73 CANYON 7870 12.7 13.9 91 15.0 15.8 95 COLE CREEK 7850 14.0 16.8 83 11.5 17.0 68 EVENING STAR 9200 29.5 30.3 97 32.2 25.8 125 FISHER CREEK 9100 36.7 35.6 103 34.7 37.1 94 NORTHEAST ENTRANCE 7350 7.9 11.3 70 13.0 12.9 101 PARKER PEAK 9400 23.9 22.0 109 23.1 16.6 139 SYLVAN LAKE 8420 18.2 23.1 79 24.8 21.3 116 THUMB DIVIDE 7980 16.9 19.3 88 18.6 19.3 96 TWO OCEAN PLATEAU 9240 33.6 28.7 117 28.0 28.3 99 WHITE MILL 8700 23.4 24.8 94 23.9 27.6 87 WOLVERINE 7650 8.2 11.7 70 13.1 13.0 101 ----- ----- Basin wide percent of average 93 101 WIND RIVER BURROUGHS CREEK 8750 13.9 14.9 93 14.4 16.6 87 CASTLE CREEK 8400 5.4 -M * 8.7 -M * COLD SPRINGS 9630 5.0 9.0 56 9.3 10.9 85 DEER PARK 9700 10.7 17.4 61 17.5 22.4 78 HOBBS PARK 10100 13.6 15.5 88 13.4 13.1 102 KIRWIN 9550 11.8 11.6 102 14.1 11.5 123 LITTLE WARM 9370 8.2 12.2 67 11.5 13.7 84 OWL CREEK 8975 .9 5.7 16 5.7 6.0 95 SOUTH PASS 9040 12.9 17.0 76 13.4 18.8 71 ST. LAWRENCE ALT 8620 .0 7.5 0 7.6 9.1 84 TOGWOTEE PASS 9580 22.1 25.4 87 24.1 25.2 96 TOWNSEND CREEK 8700 6.4 9.2 70 11.2 11.9 94 ----- ----- Basin wide percent of average 73 89 BIGHORN BASIN BALD MTN. 9380 20.7 20.1 103 15.6 17.7 88 BEAR TRAP MEADOW 8200 4.7 5.2 90 9.1 8.4 108 BONE SPRINGS DIV 9350 19.6 16.6 118 15.6 14.9 105 GRAVE SPRINGS 8550 7.1 9.6 74 10.4 9.9 105 KIRWIN 9550 11.8 11.6 102 14.1 11.5 123 MARQUETTE 8760 7.5 -M * 111.7 10.0 1117 MIDDLE POWDER 7760 9.8 12.2 80 11.1 12.6 88 OWL CREEK 8975 .9 5.7 16 5.7 6.0 95 POWDER RIVER PASS 9480 10.4 11.1 94 15.4 12.6 122 SHELL CREEK 9580 18.2 15.1 121 15.8 13.6 116 TIMBER CREEK 7950 .7 5.9 12 9.1 7.5 121 ----- ----- Basin wide percent of average 92 187 SHOSHONE RIVER BLACKWATER 9780 24.6 25.1 98 24.3 21.0 116 EVENING STAR 9200 29.5 30.3 97 32.2 25.8 125 MARQUETTE 8760 7.5 -M * 111.7 10.0 1117 SYLVAN ROAD 7120 8.5 12.9 66 17.9 18.0 99 YOUNTS PEAK 8350 15.9 17.5 91 15.8 16.5 96 ----- ----- Basin wide percent of average 91 221 POWDER RIVER BEAR TRAP MEADOW 8200 4.7 5.2 90 9.1 8.4 108 CLOUD PEAK RESERVOIR 9860 13.7 13.8 99 15.2 13.1 116 GRAVE SPRINGS 8550 7.1 9.6 74 10.4 9.9 105 HANSEN SAWMILL 8360 .0 6.5 0 8.4 8.4 100 MIDDLE POWDER 7760 9.8 12.2 80 11.1 12.6 88 POWDER RIVER PASS 9480 10.4 11.1 94 15.4 12.6 122 SOLDIER PARK 8720 8.6 -M * 9.8 -M * ----- ----- Basin wide percent of average 78 107 TONGUE RIVER BIG GOOSE 7990 8.2 11.0 75 14.1 8.8 160 BONE SPRINGS DIV 9350 19.6 16.6 118 15.6 14.9 105 BURGESS JUNCTION 7880 11.6 11.9 97 14.3 12.4 115 DOME LAKE 8880 12.4 12.8 97 14.9 13.4 111 LITTLE GOOSE 8870 8.0 -M * 16.3 -M * SUCKER CREEK 8880 11.7 12.1 97 15.2 13.8 110 TIE CREEK 6870 .2 6.2 3 13.7 10.1 136 ----- ----- Basin wide percent of average 90 120 BELLE FOURCHE COLE CANYON 5910 .0 6.9 0 8.0 6.8 118 ----- ----- Basin wide percent of average 0 118 CHEYENNE RIVER BASIN BLIND PARK 6890 .0 8.6 0 10.3 11.2 92 NORTH RAPID CREEK 6130 .0 8.4 0 7.9 8.7 91 ----- ----- Basin wide percent of average 0 91 UPPER N. PLATTE ARAPAHO RIDGE 10960 14.4 23.2 62 16.6 27.2 61 BLACKHALL MTN 9820 20.7 -M * 23.2 -M * COLUMBINE 9160 10.7 25.1 43 19.4 25.6 76 DIVIDE PEAK 8880 9.4 20.2 47 18.8 21.1 89 JOE WRIGHT 10120 11.0 21.8 50 18.5 25.2 73 LAPRELE CREEK 8375 5.4 11.0 49 11.7 12.8 91 NORTH FRENCH CREEK 10130 17.3 30.0 58 19.2 25.0 77 NEVER SUMMER 10280 11.0 20.7 53 10.8 23.9 45 OLD BATTLE 10000 22.0 32.8 67 26.7 35.1 76 RAWAH 9020 2.0 15.3 13 10.9 16.6 66 SAGE CREEK BASIN 7850 2.5 11.7 21 10.3 12.2 84 SAND LAKE 10050 22.9 33.1 69 22.7 24.5 93 SOUTH BRUSH CREEK 8440 -M 13.3 * 11.4 16.7 68 TOWER 10500 28.0 46.4 60 30.6 39.0 78 WEBBER SPRINGS 9250 13.1 26.4 50 21.0 27.1 77 WILLOW CREEK PASS 9540 -M 12.3 * 9.2 13.0 71 ZIRKEL 9340 -M 25.9 * 24.3 26.4 92 ----- ----- Basin wide percent of average 53 76 SWEETWATER DEER PARK 9700 10.7 17.4 61 17.5 22.4 78 LARSEN CREEK 9000 9.1 -M * 13.9 -M * SOUTH PASS 9040 12.9 17.0 76 13.4 18.8 71 ----- ----- Basin wide percent of average 69 75 LOWER N. PLATTE CASPER MTN. 7900 16.1 14.9 108 18.3 14.7 124 LAPRELE CREEK 8375 5.4 11.0 49 11.7 12.8 91 RENO HILL 8400 13.9 14.6 95 17.7 15.3 116 WINDY PEAK 7900 3.6 8.3 43 8.7 10.7 81 ----- ----- Basin wide percent of average 80 105 LARAMIE RIVER BROOKLYN LAKE 10240 15.0 24.3 62 18.5 22.5 82 CINNABAR PARK 9574 12.1 17.9 68 19.2 20.3 95 CROW CREEK 8330 1.6 9.1 18 9.9 10.2 97 DEADMAN HILL 10220 15.4 16.7 92 15.2 17.2 88 RAWAH 9020 2.0 15.3 13 10.9 16.6 66 ROACH 9700 11.5 17.4 66 16.2 18.9 86 ----- ----- Basin wide percent of average 57 85 S. PLATTE BLACK MOUNTAIN 8920 8.8 -M * 12.4 -M * CROW CREEK 8330 1.6 9.1 18 9.9 10.2 97 DEADMAN HILL 10220 15.4 16.7 92 15.2 17.2 88 ----- ----- Basin wide percent of average 66 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.8 * 11.7 16.1 73 DIVIDE PEAK 8880 9.4 20.2 47 18.8 21.1 89 ELK RIVER 8700 -M 19.8 * 15.3 19.9 77 LITTLE SNAKE RIVER 8915 13.0 -M * 24.0 -M * OLD BATTLE 10000 22.0 32.8 67 26.7 35.1 76 SAGE CREEK BASIN 7850 2.5 11.7 21 10.3 12.2 84 SANDSTONE RS 8150 -M 14.7 * 11.8 19.0 62 WHISKEY PARK 8950 16.0 30.5 52 23.7 29.1 81 ----- ----- Basin wide percent of average 52 78 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.5 14.8 91 13.7 13.6 101 BLIND BULL SUM 8650 22.9 28.5 80 17.3 22.7 76 EAST RIM DIVIDE 7930 8.8 13.4 66 11.4 12.3 93 ELKHART PARK G.S. 9400 14.1 13.7 103 15.2 13.6 112 GROS VENTRE SUMMIT 8750 9.0 14.5 62 10.6 13.2 80 GUNSIGHT PASS 9820 13.0 -M * 14.3 -M * KENDALL R.S. 7740 12.1 14.5 83 14.8 14.8 100 LOOMIS PARK 8240 12.2 17.5 70 16.5 17.8 93 NEW FORK LAKE 8340 9.6 11.4 84 10.6 11.5 92 POCKET CREEK 9360 10.2 -M * 12.3 -M * SNIDER BASIN 8060 11.4 14.8 77 13.0 16.5 79 SPRING CREEK DIVIDE 9000 22.9 27.2 84 22.5 27.0 83 TRIPLE PEAK 8500 19.8 25.4 78 25.0 25.3 99 ----- ----- Basin wide percent of average 80 91 LOWER GREEN RIVER BLACKS FORK JCT 8870 2.2 -M * 11.1 -M * BUCK PASTURE 9700 .1 -M * 4.4 -M * EF BLACKS FORK GS 9308 5.8 -M * 9.6 -M * HAMS FORK 7840 6.7 11.8 57 9.8 12.5 78 HEWINTA 9519 6.6 12.3 54 13.1 14.9 88 HICKERSON PARK 9145 4.4 7.9 56 12.5 8.1 154 HOLE-IN-ROCK 9150 5.3 7.3 73 12.6 7.6 166 INDIAN CREEK 9425 19.9 28.5 70 17.9 26.0 69 KELLEY R.S. 8180 12.6 17.2 73 15.1 20.8 73 SPIRIT LK 10223 10.4 -M * 18.0 -M * STEEL CREEK PARK 10200 11.0 16.1 68 14.9 16.6 90 ----- ----- Basin wide percent of average 66 90 UPPER BEAR RIVER BEAR RIVER RS 8500 1.3 -M * 10.5 -M * BUG LAKE 7950 14.4 21.4 67 15.7 19.6 80 BURTS MILLER RANCH 8000 .8 -M * 9.8 -M * CHALK CREEK #1 8993 14.5 25.1 58 19.0 25.7 74 HAYDEN FORK 9212 8.0 16.7 48 17.9 21.4 84 KELLEY R.S. 8180 12.6 17.2 73 15.1 20.8 73 LILY LAKE 9156 8.0 13.9 58 12.6 17.9 70 MONTE CRISTO 8960 16.7 30.2 55 18.9 26.0 73 SALT RIVER SUMMIT 7760 9.2 14.8 62 11.4 19.2 59 ----- ----- Basin wide percent of average 60 73 ----------------------------------------------------------------------------- -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.