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 MONDAY: APRIL 15 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 15.2 13.2 115 20.9 21.3 98 BLACK BEAR 8170 38.2 36.6 104 36.2 39.0 93 BLIND BULL SUM 8650 21.1 23.8 89 15.0 19.8 76 COTTONWOOD CREEK 7670 17.5 19.8 88 24.4 25.2 97 EAST RIM DIVIDE 7930 7.4 10.0 74 8.8 11.9 74 GRAND TARGHEE 9260 38.2 41.0 93 28.7 32.0 90 GRANITE CREEK 6770 11.6 12.3 94 15.8 19.9 79 GRASSY LAKE 7265 28.2 31.5 90 32.4 36.6 89 GROS VENTRE SUMMIT 8750 10.6 13.0 82 11.6 13.3 87 GUNSIGHT PASS 9820 11.5 13.4 86 12.1 14.3 85 LEWIS LAKE DIVIDE 7850 30.8 30.2 102 33.2 36.1 92 PHILLIPS BENCH 8200 23.3 26.0 90 24.9 28.6 87 SALT RIVER SUMMIT 7760 9.4 11.2 84 14.9 17.0 88 SNAKE RIVER STATION 6920 13.8 12.8 108 22.3 22.9 97 SPRING CREEK DIVIDE 9000 23.8 23.2 103 22.7 24.3 93 THUMB DIVIDE 7980 15.7 14.4 109 18.0 19.0 95 TOGWOTEE PASS 9580 21.6 23.0 94 22.7 24.9 91 TWO OCEAN PLATEAU 9240 29.8 27.2 110 25.7 27.9 92 WILLOW CREEK 8380 26.2 26.7 98 32.4 34.4 94 YOUNTS PEAK 8350 13.1 14.7 89 11.8 16.2 73 ----- ----- Basin wide percent 96 90 MADISON-GALLATIN BLACK BEAR 8170 38.2 36.6 104 36.2 39.0 93 CANYON 7870 12.1 12.4 98 13.4 16.6 81 MADISON PLATEAU 7750 22.2 22.5 99 25.2 26.8 94 WEST YELLOWSTONE 6700 6.1 8.2 74 14.1 14.4 98 WHISKEY CREEK 6800 11.2 14.8 76 18.8 20.6 91 ----- ----- Basin wide percent 95 92 YELLOWSTONE BEARTOOTH LAKE 9360 18.4 22.4 82 18.5 20.3 91 BURNT MTN 5880 .6 .2 300* 10.1 13.5 75 CANYON 7870 12.1 12.4 98 13.4 16.6 81 COLE CREEK 7850 12.2 15.6 78 9.1 14.0 65 EVENING STAR 9200 25.4 24.7 103 28.6 28.1 102 FISHER CREEK 9100 31.1 31.9 97 31.6 32.6 97 NORTHEAST ENTRANCE 7350 5.7 8.0 71 11.7 12.6 93 PARKER PEAK 9400 23.2 20.5 113 21.6 18.2 119 SYLVAN LAKE 8420 18.7 20.0 94 24.6 22.9 107 THUMB DIVIDE 7980 15.7 14.4 109 18.0 19.0 95 TWO OCEAN PLATEAU 9240 29.8 27.2 110 25.7 27.9 92 WHITE MILL 8700 23.5 23.5 100 22.3 24.4 91 WOLVERINE 7650 6.7 8.6 78 10.7 12.6 85 ----- ----- Basin wide percent 97 94 WIND RIVER BURROUGHS CREEK 8750 12.0 12.9 93 10.7 16.3 66 CASTLE CREEK 8400 2.6 -M * 7.7 -M * COLD SPRINGS 9630 4.8 5.8 83 8.6 10.4 83 DEER PARK 9700 12.6 16.0 79 14.7 20.7 71 HOBBS PARK 10100 12.4 14.9 83 11.5 14.2 81 KIRWIN 9550 9.7 9.9 98 11.0 12.0 92 LITTLE WARM 9370 10.0 10.2 98 11.7 13.4 87 OWL CREEK 8975 5.6 5.1 110 6.2 6.4 97 SOUTH PASS 9040 11.2 15.8 71 10.4 18.0 58 ST. LAWRENCE ALT 8620 2.1 6.4 33 8.0 9.4 85 TOGWOTEE PASS 9580 21.6 23.0 94 22.7 24.9 91 TOWNSEND CREEK 8700 6.9 10.0 69 9.6 12.8 75 ----- ----- Basin wide percent 84 79 BIGHORN BASIN BALD MTN. 9380 15.8 19.4 81 10.8 17.7 61 BEAR TRAP MEADOW 8200 8.2 4.4 186 9.9 9.1 109 BONE SPRINGS DIV 9350 14.7 16.8 88 11.8 16.2 73 GRAVE SPRINGS 8550 7.8 9.6 81 9.0 11.2 80 KIRWIN 9550 9.7 9.9 98 11.0 12.0 92 MARQUETTE 8760 7.5 -M * 9.4 -M * MIDDLE POWDER 7760 13.0 12.4 105 14.4 12.3 117 OWL CREEK 8975 5.6 5.1 110 6.2 6.4 97 POWDER RIVER PASS 9480 12.1 10.2 119 14.0 13.2 106 SHELL CREEK 9580 14.7 15.5 95 13.0 14.3 91 TIMBER CREEK 7950 3.8 5.2 73 7.7 7.9 97 ----- ----- Basin wide percent 97 90 SHOSHONE RIVER BLACKWATER 9780 24.0 23.7 101 23.5 21.3 110 EVENING STAR 9200 25.4 24.7 103 28.6 28.1 102 MARQUETTE 8760 7.5 -M * 9.4 -M * SYLVAN ROAD 7120 5.9 10.3 57 16.6 17.1 97 YOUNTS PEAK 8350 13.1 14.7 89 11.8 16.2 73 ----- ----- Basin wide percent 93 97 POWDER RIVER BEAR TRAP MEADOW 8200 8.2 4.4 186 9.9 9.1 109 CLOUD PEAK RESERVOIR 9860 13.4 15.4 87 11.4 14.2 80 GRAVE SPRINGS 8550 7.8 9.6 81 9.0 11.2 80 HANSEN SAWMILL 8360 6.4 5.9 108 8.4 9.1 92 MIDDLE POWDER 7760 13.0 12.4 105 14.4 12.3 117 POWDER RIVER PASS 9480 12.1 10.2 119 14.0 13.2 106 SOLDIER PARK 8720 5.1 -M * 8.1 -M * ----- ----- Basin wide percent 105 97 TONGUE RIVER BIG GOOSE 7990 7.3 9.7 75 8.9 12.1 74 BONE SPRINGS DIV 9350 14.7 16.8 88 11.8 16.2 73 BURGESS JUNCTION 7880 10.9 12.1 90 9.9 13.0 76 DOME LAKE 8880 9.5 12.0 79 9.8 14.3 69 LITTLE GOOSE 8870 8.8 -M * 12.0 -M * SUCKER CREEK 8880 12.5 12.6 99 12.9 15.1 85 TIE CREEK 6870 4.4 4.8 92 10.5 12.3 85 ----- ----- Basin wide percent 87 77 BELLE FOURCHE COLE CANYON 5910 3.6 3.2 112 8.5 10.0 85 ----- ----- Basin wide percent 112 85 CHEYENNE RIVER BASIN BLIND PARK 6890 5.0 5.1 98 12.4 12.4 100 NORTH RAPID CREEK 6130 5.9 5.5 107 10.0 10.4 96 ----- ----- Basin wide percent 103 98 UPPER N. PLATTE ARAPAHO RIDGE 10960 20.1 21.6 93 20.2 23.7 85 BLACKHALL MTN 9820 26.1 -M * 26.7 -M * COLUMBINE 9160 21.0 21.8 96 23.4 26.4 89 DIVIDE PEAK 8880 13.4 20.0 67 18.6 22.2 84 JOE WRIGHT 10120 17.6 22.1 80 25.6 26.9 95 LAPRELE CREEK 8375 5.7 9.0 63 8.8 13.2 67 MED BOW 10500 14.7 -M * 30.0 -M * NORTH FRENCH CREEK 10130 24.3 31.8 76 23.5 27.8 85 NEVER SUMMER 10280 17.2 20.5 84 13.1 -M * OLD BATTLE 10000 26.5 32.2 82 28.1 36.1 78 RAWAH 9020 11.2 9.6 117 14.8 -M * SAGE CREEK BASIN 7850 -M 8.8 * 10.5 15.0 70 SAND LAKE 10050 23.8 30.4 78 23.6 25.9 91 SOUTH BRUSH CREEK 8440 8.9 10.9 82 12.5 15.9 79 TOWER 10500 35.0 47.4 74 26.7 41.1 65 WEBBER SPRINGS 9250 19.7 23.3 85 22.1 27.7 80 WILLOW CREEK PASS 9540 14.2 12.7 112 14.4 14.0 103 ZIRKEL 9340 23.0 23.9 96 28.0 -M * ----- ----- Basin wide percent 84 82 SWEETWATER DEER PARK 9700 12.6 16.0 79 14.7 20.7 71 LARSEN CREEK 9000 4.3 -M * 11.0 -M * SOUTH PASS 9040 11.2 15.8 71 10.4 18.0 58 ----- ----- Basin wide percent 75 65 LOWER N. PLATTE CASPER MTN. 7900 10.9 14.4 76 9.5 16.0 59 LAPRELE CREEK 8375 5.7 9.0 63 8.8 13.2 67 RENO HILL 8400 11.6 14.1 82 13.5 16.5 82 WINDY PEAK 7900 4.6 7.4 62 8.0 11.2 71 ----- ----- Basin wide percent 73 70 LARAMIE RIVER BROOKLYN LAKE 10240 18.3 22.2 82 18.0 22.1 81 CINNABAR PARK 9574 14.2 21.0 68 18.6 24.9 75 CROW CREEK 8330 4.3 4.1 105 8.5 11.5 74 DEADMAN HILL 10220 15.3 16.5 93 15.0 18.2 82 RAWAH 9020 11.2 9.6 117 14.8 -M * ROACH 9700 13.9 16.5 84 15.8 20.0 79 ----- ----- Basin wide percent 86 78 S. PLATTE BLACK MOUNTAIN 8920 9.6 -M * 11.5 -M * CROW CREEK 8330 4.3 4.1 105 8.5 11.5 74 DEADMAN HILL 10220 15.3 16.5 93 15.0 18.2 82 ----- ----- Basin wide percent 95 79 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.5 6.7 67 11.5 15.6 74 DIVIDE PEAK 8880 13.4 20.0 67 18.6 22.2 84 ELK RIVER 8700 -M 17.2 * -M 20.7 * LITTLE SNAKE RIVER 8915 19.3 25.8 75 25.5 30.7 83 OLD BATTLE 10000 26.5 32.2 82 28.1 36.1 78 SAGE CREEK BASIN 7850 -M 8.8 * 10.5 15.0 70 SANDSTONE RS 8150 7.5 11.8 64 12.3 19.0 65 WHISKEY PARK 8950 23.6 27.0 87 25.8 28.8 90 ----- ----- Basin wide percent 77 79 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.3 12.9 80 10.6 13.7 77 BLIND BULL SUM 8650 21.1 23.8 89 15.0 19.8 76 EAST RIM DIVIDE 7930 7.4 10.0 74 8.8 11.9 74 ELKHART PARK G.S. 9400 9.6 12.0 80 9.9 13.7 72 GROS VENTRE SUMMIT 8750 10.6 13.0 82 11.6 13.3 87 GUNSIGHT PASS 9820 11.5 13.4 86 12.1 14.3 85 KENDALL R.S. 7740 6.8 9.8 69 10.9 14.4 76 LOOMIS PARK 8240 10.2 13.6 75 13.7 17.6 78 NEW FORK LAKE 8340 6.3 9.6 66 6.7 11.0 61 POCKET CREEK 9360 7.6 -M * 10.2 -M * SNIDER BASIN 8060 8.4 11.6 72 13.6 14.5 94 SPRING CREEK DIVIDE 9000 23.8 23.2 103 22.7 24.3 93 TRIPLE PEAK 8500 20.6 19.7 105 23.8 25.7 93 ----- ----- Basin wide percent 85 82 LOWER GREEN RIVER BLACKS FORK JCT 8870 8.1 -M * 11.3 -M * BUCK PASTURE 9700 14.4 -M * 16.6 -M * EF BLACKS FORK GS 9308 14.5 -M * 11.2 -M * HAMS FORK 7840 7.1 8.6 83 9.5 11.7 81 HEWINTA 9519 13.0 9.7 134 13.8 14.5 95 HICKERSON PARK 9145 6.7 6.6 102 10.2 10.7 95 HOLE-IN-ROCK 9150 9.5 6.8 140 11.6 10.2 114 INDIAN CREEK 9425 21.3 23.9 89 18.7 23.1 81 KELLEY R.S. 8180 12.2 13.7 89 13.9 18.5 75 SPIRIT LK 10223 11.6 -M * 15.7 -M * STEEL CREEK PARK 10200 14.9 16.1 93 16.5 17.2 96 ----- ----- Basin wide percent 99 89 UPPER BEAR RIVER BEAR RIVER RS 8500 7.4 -M * 12.6 -M * BUG LAKE 7950 13.4 19.0 71 17.3 19.9 87 BURTS MILLER RANCH 8000 4.9 -M * 8.2 -M * CHALK CREEK #1 8993 20.8 24.9 84 23.1 26.1 89 HAYDEN FORK 9212 12.4 13.9 89 18.1 21.8 83 KELLEY R.S. 8180 12.2 13.7 89 13.9 18.5 75 LILY LAKE 9156 12.8 12.4 103 14.1 17.8 79 MONTE CRISTO 8960 21.8 27.8 78 23.4 26.8 87 SALT RIVER SUMMIT 7760 9.4 11.2 84 14.9 17.0 88 ----- ----- Basin wide percent 84 84 ----------------------------------------------------------------------------- -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.