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 WEDNESDAY: APRIL 24 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 15.4 11.0 140 21.8 22.0 99 BLACK BEAR 8170 39.2 36.9 106 37.1 40.5 92 BLIND BULL SUM 8650 22.5 24.3 93 16.1 20.6 78 COTTONWOOD CREEK 7670 18.7 17.5 107 26.1 26.3 99 EAST RIM DIVIDE 7930 8.3 9.2 90 10.1 12.4 81 GRAND TARGHEE 9260 41.6 42.9 97 30.9 33.2 93 GRANITE CREEK 6770 11.7 9.8 119 16.7 20.5 81 GRASSY LAKE 7265 29.3 30.4 96 33.8 38.0 89 GROS VENTRE SUMMIT 8750 10.2 12.7 80 12.9 14.0 92 GUNSIGHT PASS 9820 12.1 13.6 89 13.4 15.3 88 LEWIS LAKE DIVIDE 7850 31.4 30.7 102 34.1 37.4 91 PHILLIPS BENCH 8200 25.5 25.3 101 26.6 29.6 90 SALT RIVER SUMMIT 7760 10.3 8.7 118 15.9 17.7 90 SNAKE RIVER STATION 6920 13.7 10.5 130 23.0 23.9 96 SPRING CREEK DIVIDE 9000 26.1 23.6 111 24.9 25.3 98 THUMB DIVIDE 7980 16.5 14.2 116 18.7 20.1 93 TOGWOTEE PASS 9580 23.5 24.4 96 24.4 26.1 93 TWO OCEAN PLATEAU 9240 31.5 28.8 109 27.0 29.0 93 WILLOW CREEK 8380 28.5 26.1 109 34.7 36.1 96 YOUNTS PEAK 8350 14.2 15.1 94 13.3 16.9 79 ----- ----- Basin wide percent 103 91 MADISON-GALLATIN BLACK BEAR 8170 39.2 36.9 106 37.1 40.5 92 CANYON 7870 12.7 11.8 108 13.8 17.3 80 MADISON PLATEAU 7750 22.8 22.7 100 25.6 27.9 92 WEST YELLOWSTONE 6700 4.1 5.6 73 14.2 15.4 92 WHISKEY CREEK 6800 11.0 15.4 71 19.2 21.6 89 ----- ----- Basin wide percent 97 90 YELLOWSTONE BEARTOOTH LAKE 9360 19.4 23.6 82 19.5 21.1 92 BURNT MTN 5880 1.3 .0 * 11.5 14.8 78 CANYON 7870 12.7 11.8 108 13.8 17.3 80 COLE CREEK 7850 14.3 16.3 88 10.8 15.1 72 EVENING STAR 9200 26.7 24.4 109 30.1 29.3 103 FISHER CREEK 9100 31.8 33.1 96 32.8 34.0 96 NORTHEAST ENTRANCE 7350 5.9 5.4 109 12.1 13.2 92 PARKER PEAK 9400 25.1 21.6 116 22.7 19.2 118 SYLVAN LAKE 8420 19.4 20.3 96 25.2 24.1 105 THUMB DIVIDE 7980 16.5 14.2 116 18.7 20.1 93 TWO OCEAN PLATEAU 9240 31.5 28.8 109 27.0 29.0 93 WHITE MILL 8700 24.9 23.8 105 23.2 25.3 92 WOLVERINE 7650 6.6 5.8 114 11.6 13.1 89 ----- ----- Basin wide percent 103 94 WIND RIVER BURROUGHS CREEK 8750 13.1 13.1 100 12.2 17.1 71 CASTLE CREEK 8400 2.3 -M * 8.7 -M * COLD SPRINGS 9630 4.9 3.4 144 9.7 11.5 84 DEER PARK 9700 14.1 16.3 87 15.9 22.4 71 HOBBS PARK 10100 13.6 15.5 88 12.9 15.5 83 KIRWIN 9550 11.1 10.1 110 12.5 12.9 97 LITTLE WARM 9370 10.9 9.7 112 12.8 14.3 90 OWL CREEK 8975 6.2 3.0 207 7.0 7.2 97 SOUTH PASS 9040 12.6 15.3 82 11.6 19.2 60 ST. LAWRENCE ALT 8620 3.6 5.1 71 9.6 10.5 91 TOGWOTEE PASS 9580 23.5 24.4 96 24.4 26.1 93 TOWNSEND CREEK 8700 8.5 8.9 96 11.4 13.9 82 ----- ----- Basin wide percent 98 82 BIGHORN BASIN BALD MTN. 9380 17.6 20.2 87 12.5 18.6 67 BEAR TRAP MEADOW 8200 9.2 2.2 418 11.1 9.8 113 BONE SPRINGS DIV 9350 16.4 16.4 100 13.3 17.2 77 GRAVE SPRINGS 8550 7.9 9.3 85 9.8 12.1 81 KIRWIN 9550 11.1 10.1 110 12.5 12.9 97 MARQUETTE 8760 9.4 -M * 10.7 -M * MIDDLE POWDER 7760 13.7 12.3 111 15.5 13.2 117 OWL CREEK 8975 6.2 3.0 207 7.0 7.2 97 POWDER RIVER PASS 9480 13.2 10.3 128 15.4 14.1 109 SHELL CREEK 9580 16.9 15.8 107 15.2 15.2 100 TIMBER CREEK 7950 5.1 3.9 131 9.1 8.8 103 ----- ----- Basin wide percent 113 94 SHOSHONE RIVER BLACKWATER 9780 25.7 24.3 106 25.1 22.3 113 EVENING STAR 9200 26.7 24.4 109 30.1 29.3 103 MARQUETTE 8760 9.4 -M * 10.7 -M * SYLVAN ROAD 7120 5.8 8.6 67 16.8 17.9 94 YOUNTS PEAK 8350 14.2 15.1 94 13.3 16.9 79 ----- ----- Basin wide percent 100 99 POWDER RIVER BEAR TRAP MEADOW 8200 9.2 2.2 418 11.1 9.8 113 CLOUD PEAK RESERVOIR 9860 15.1 16.2 93 13.4 15.4 87 GRAVE SPRINGS 8550 7.9 9.3 85 9.8 12.1 81 HANSEN SAWMILL 8360 7.2 4.4 164 9.6 10.0 96 MIDDLE POWDER 7760 13.7 12.3 111 15.5 13.2 117 POWDER RIVER PASS 9480 13.2 10.3 128 15.4 14.1 109 SOLDIER PARK 8720 6.0 -M * 9.4 -M * ----- ----- Basin wide percent 121 100 TONGUE RIVER BIG GOOSE 7990 8.8 9.1 97 10.3 13.2 78 BONE SPRINGS DIV 9350 16.4 16.4 100 13.3 17.2 77 BURGESS JUNCTION 7880 12.0 12.5 96 11.2 13.9 81 DOME LAKE 8880 10.9 11.8 92 11.3 15.3 74 LITTLE GOOSE 8870 10.0 -M * 13.5 -M * SUCKER CREEK 8880 13.9 12.7 109 14.5 16.2 90 TIE CREEK 6870 5.7 3.8 150 12.2 13.4 91 ----- ----- Basin wide percent 102 82 BELLE FOURCHE COLE CANYON 5910 5.4 1.1 491 10.3 10.8 95 ----- ----- Basin wide percent 491 95 CHEYENNE RIVER BASIN BLIND PARK 6890 6.6 3.8 174 13.8 13.5 102 NORTH RAPID CREEK 6130 6.3 3.8 166 11.6 11.5 101 ----- ----- Basin wide percent 170 102 UPPER N. PLATTE ARAPAHO RIDGE 10960 22.9 21.6 106 23.0 25.2 91 BLACKHALL MTN 9820 29.8 -M * 30.5 -M * COLUMBINE 9160 22.9 20.7 111 25.5 27.5 93 DIVIDE PEAK 8880 16.2 18.2 89 21.2 23.3 91 JOE WRIGHT 10120 22.1 23.0 96 29.8 28.5 105 LAPRELE CREEK 8375 7.1 7.3 97 10.4 14.2 73 MED BOW 10500 4.4 -M * 32.7 -M * NORTH FRENCH CREEK 10130 27.4 32.4 85 26.4 29.3 90 NEVER SUMMER 10280 21.0 20.9 100 15.9 -M * OLD BATTLE 10000 30.5 33.8 90 31.8 37.7 84 RAWAH 9020 14.1 8.0 176 17.1 16.4 104 SAGE CREEK BASIN 7850 -M 3.5 * 11.5 15.5 74 SAND LAKE 10050 26.6 30.9 86 26.1 27.6 95 SOUTH BRUSH CREEK 8440 11.3 9.9 114 14.6 16.9 86 TOWER 10500 38.6 49.1 79 24.4 43.1 57 WEBBER SPRINGS 9250 22.6 21.9 103 25.3 28.9 88 WILLOW CREEK PASS 9540 18.1 13.6 133 17.8 14.9 119 ZIRKEL 9340 26.8 22.5 119 31.4 30.2 104 ----- ----- Basin wide percent 98 89 SWEETWATER DEER PARK 9700 14.1 16.3 87 15.9 22.4 71 LARSEN CREEK 9000 3.5 -M * 11.7 -M * SOUTH PASS 9040 12.6 15.3 82 11.6 19.2 60 ----- ----- Basin wide percent 84 66 LOWER N. PLATTE CASPER MTN. 7900 13.7 14.2 96 11.2 17.0 66 LAPRELE CREEK 8375 7.1 7.3 97 10.4 14.2 73 RENO HILL 8400 13.4 13.9 96 15.1 17.8 85 WINDY PEAK 7900 6.2 6.2 100 9.6 12.2 79 ----- ----- Basin wide percent 97 76 LARAMIE RIVER BROOKLYN LAKE 10240 21.0 22.7 93 21.0 23.5 89 CINNABAR PARK 9574 14.5 19.9 73 22.0 26.0 85 CROW CREEK 8330 6.2 .0 * 10.5 12.6 83 DEADMAN HILL 10220 18.0 17.9 101 17.5 19.6 89 RAWAH 9020 14.1 8.0 176 17.1 16.4 104 ROACH 9700 17.0 16.7 102 19.0 21.3 89 ----- ----- Basin wide percent 107 90 S. PLATTE BLACK MOUNTAIN 8920 12.1 -M * 14.0 -M * CROW CREEK 8330 6.2 .0 * 10.5 12.6 83 DEADMAN HILL 10220 18.0 17.9 101 17.5 19.6 89 ----- ----- Basin wide percent 135* 87 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.2 2.4 217 13.2 16.4 80 DIVIDE PEAK 8880 16.2 18.2 89 21.2 23.3 91 ELK RIVER 8700 16.4 14.7 112 19.4 21.8 89 LITTLE SNAKE RIVER 8915 23.8 23.5 101 29.3 31.5 93 OLD BATTLE 10000 30.5 33.8 90 31.8 37.7 84 SAGE CREEK BASIN 7850 -M 3.5 * 11.5 15.5 74 SANDSTONE RS 8150 9.6 9.2 104 14.5 20.0 72 WHISKEY PARK 8950 27.6 25.6 108 29.5 30.3 97 ----- ----- Basin wide percent 101 87 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.5 12.2 94 11.8 14.5 81 BLIND BULL SUM 8650 22.5 24.3 93 16.1 20.6 78 EAST RIM DIVIDE 7930 8.3 9.2 90 10.1 12.4 81 ELKHART PARK G.S. 9400 10.0 11.8 85 11.3 14.3 79 GROS VENTRE SUMMIT 8750 10.2 12.7 80 12.9 14.0 92 GUNSIGHT PASS 9820 12.1 13.6 89 13.4 15.3 88 KENDALL R.S. 7740 6.7 7.0 96 12.0 14.9 81 LOOMIS PARK 8240 11.4 12.1 94 15.2 18.2 84 NEW FORK LAKE 8340 7.1 7.7 92 7.8 11.5 68 POCKET CREEK 9360 9.6 -M * 11.3 -M * SNIDER BASIN 8060 9.1 10.2 89 14.9 15.1 99 SPRING CREEK DIVIDE 9000 26.1 23.6 111 24.9 25.3 98 TRIPLE PEAK 8500 22.6 19.1 118 25.6 26.8 96 ----- ----- Basin wide percent 96 87 LOWER GREEN RIVER BLACKS FORK JCT 8870 8.9 -M * 12.3 -M * BUCK PASTURE 9700 16.1 -M * 18.2 -M * EF BLACKS FORK GS 9308 16.5 -M * 12.6 -M * HAMS FORK 7840 7.6 5.3 143 10.4 12.4 84 HEWINTA 9519 14.6 7.2 203 15.0 15.4 97 HICKERSON PARK 9145 8.2 5.1 161 11.9 11.5 103 HOLE-IN-ROCK 9150 10.6 5.3 200 13.0 10.9 119 INDIAN CREEK 9425 24.5 23.6 104 20.7 24.1 86 KELLEY R.S. 8180 13.5 11.9 113 15.4 19.3 80 SPIRIT LK 10223 13.2 -M * 17.3 -M * STEEL CREEK PARK 10200 16.5 16.5 100 18.2 18.2 100 ----- ----- Basin wide percent 128 94 UPPER BEAR RIVER BEAR RIVER RS 8500 7.5 -M * 13.4 -M * BUG LAKE 7950 14.2 16.2 88 17.9 20.8 86 BURTS MILLER RANCH 8000 4.6 -M * 8.7 -M * CHALK CREEK #1 8993 22.5 24.6 91 24.3 27.3 89 HAYDEN FORK 9212 13.9 10.9 128 19.6 22.8 86 KELLEY R.S. 8180 13.5 11.9 113 15.4 19.3 80 LILY LAKE 9156 13.5 10.0 135 15.1 18.7 81 MONTE CRISTO 8960 23.5 27.3 86 24.8 28.0 89 SALT RIVER SUMMIT 7760 10.3 8.7 118 15.9 17.7 90 ----- ----- Basin wide percent 102 86 ----------------------------------------------------------------------------- -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.