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 23 , 2013 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER BASE CAMP 7030 15.5 11.3 137 21.8 22.0 99 BLACK BEAR 8170 38.9 36.8 106 37.1 40.3 92 BLIND BULL SUM 8650 22.4 24.3 92 16.1 20.5 79 COTTONWOOD CREEK 7670 18.8 17.8 106 26.1 26.2 100 EAST RIM DIVIDE 7930 8.3 9.3 89 10.1 12.3 82 GRAND TARGHEE 9260 41.5 42.7 97 30.8 33.0 93 GRANITE CREEK 6770 11.7 10.0 117 16.6 20.5 81 GRASSY LAKE 7265 29.2 30.6 95 33.7 37.8 89 GROS VENTRE SUMMIT 8750 10.2 12.9 79 12.7 13.9 91 GUNSIGHT PASS 9820 12.1 13.6 89 13.3 15.2 88 LEWIS LAKE DIVIDE 7850 31.3 30.7 102 33.9 37.2 91 PHILLIPS BENCH 8200 25.4 25.3 100 26.5 29.5 90 SALT RIVER SUMMIT 7760 10.2 8.9 115 15.9 17.6 90 SNAKE RIVER STATION 6920 13.6 10.9 125 23.0 23.8 97 SPRING CREEK DIVIDE 9000 26.1 23.6 111 25.0 25.2 99 THUMB DIVIDE 7980 16.4 14.3 115 18.5 20.0 92 TOGWOTEE PASS 9580 23.4 24.3 96 24.3 26.0 93 TWO OCEAN PLATEAU 9240 31.4 28.7 109 27.0 28.9 93 WILLOW CREEK 8380 28.4 26.4 108 34.6 35.8 97 YOUNTS PEAK 8350 14.0 15.1 93 13.3 16.9 79 ----- ----- Basin wide percent 103 92 MADISON-GALLATIN BLACK BEAR 8170 38.9 36.8 106 37.1 40.3 92 CANYON 7870 12.6 12.0 105 13.7 17.2 80 MADISON PLATEAU 7750 22.5 22.8 99 25.5 27.8 92 WEST YELLOWSTONE 6700 4.6 6.0 77 14.2 15.3 93 WHISKEY CREEK 6800 10.9 15.4 71 19.1 21.5 89 ----- ----- Basin wide percent 96 90 YELLOWSTONE BEARTOOTH LAKE 9360 19.4 23.6 82 19.5 21.0 93 BURNT MTN 5880 1.2 .0 * 11.4 14.5 79 CANYON 7870 12.6 12.0 105 13.7 17.2 80 COLE CREEK 7850 14.2 16.4 87 10.7 14.9 72 EVENING STAR 9200 26.7 24.4 109 29.9 29.1 103 FISHER CREEK 9100 31.7 33.0 96 32.8 33.8 97 NORTHEAST ENTRANCE 7350 5.9 5.7 104 12.0 13.1 92 PARKER PEAK 9400 24.8 21.4 116 22.5 19.1 118 SYLVAN LAKE 8420 19.3 20.3 95 25.1 24.0 105 THUMB DIVIDE 7980 16.4 14.3 115 18.5 20.0 92 TWO OCEAN PLATEAU 9240 31.4 28.7 109 27.0 28.9 93 WHITE MILL 8700 24.8 23.7 105 23.0 25.2 91 WOLVERINE 7650 7.3 6.2 118 11.2 13.1 85 ----- ----- Basin wide percent 103 94 WIND RIVER BURROUGHS CREEK 8750 13.1 13.2 99 12.1 17.0 71 CASTLE CREEK 8400 2.4 -M * 8.7 -M * COLD SPRINGS 9630 5.0 3.9 128 9.6 11.3 85 DEER PARK 9700 13.9 16.4 85 15.9 22.1 72 HOBBS PARK 10100 13.6 15.3 89 12.8 15.3 84 KIRWIN 9550 11.1 10.1 110 12.5 12.8 98 LITTLE WARM 9370 10.3 9.9 104 12.8 14.2 90 OWL CREEK 8975 6.1 3.2 191 7.0 7.1 99 SOUTH PASS 9040 12.5 15.3 82 11.5 19.0 61 ST. LAWRENCE ALT 8620 3.7 5.1 73 9.6 10.3 93 TOGWOTEE PASS 9580 23.4 24.3 96 24.3 26.0 93 TOWNSEND CREEK 8700 8.2 9.0 91 11.0 13.7 80 ----- ----- Basin wide percent 96 82 BIGHORN BASIN BALD MTN. 9380 17.5 20.1 87 12.5 18.5 68 BEAR TRAP MEADOW 8200 9.0 2.5 360 10.9 9.7 112 BONE SPRINGS DIV 9350 16.3 16.3 100 13.3 17.1 78 GRAVE SPRINGS 8550 8.0 9.4 85 9.8 11.9 82 KIRWIN 9550 11.1 10.1 110 12.5 12.8 98 MARQUETTE 8760 9.2 -M * 10.6 -M * MIDDLE POWDER 7760 13.7 12.4 110 15.3 13.1 117 OWL CREEK 8975 6.1 3.2 191 7.0 7.1 99 POWDER RIVER PASS 9480 13.1 10.2 128 15.3 14.0 109 SHELL CREEK 9580 16.9 15.7 108 15.2 15.1 101 TIMBER CREEK 7950 5.1 4.2 121 9.1 8.8 103 ----- ----- Basin wide percent 112 94 SHOSHONE RIVER BLACKWATER 9780 25.6 24.1 106 25.0 22.2 113 EVENING STAR 9200 26.7 24.4 109 29.9 29.1 103 MARQUETTE 8760 9.2 -M * 10.6 -M * SYLVAN ROAD 7120 5.9 8.9 66 16.8 17.8 94 YOUNTS PEAK 8350 14.0 15.1 93 13.3 16.9 79 ----- ----- Basin wide percent 100 99 POWDER RIVER BEAR TRAP MEADOW 8200 9.0 2.5 360 10.9 9.7 112 CLOUD PEAK RESERVOIR 9860 14.9 16.1 93 13.4 15.3 88 GRAVE SPRINGS 8550 8.0 9.4 85 9.8 11.9 82 HANSEN SAWMILL 8360 7.1 4.5 158 9.6 9.9 97 MIDDLE POWDER 7760 13.7 12.4 110 15.3 13.1 117 POWDER RIVER PASS 9480 13.1 10.2 128 15.3 14.0 109 SOLDIER PARK 8720 5.7 -M * 9.2 -M * ----- ----- Basin wide percent 119 101 TONGUE RIVER BIG GOOSE 7990 8.5 9.2 92 10.1 13.1 77 BONE SPRINGS DIV 9350 16.3 16.3 100 13.3 17.1 78 BURGESS JUNCTION 7880 11.9 12.6 94 11.1 13.7 81 DOME LAKE 8880 10.8 11.8 92 11.2 15.2 74 LITTLE GOOSE 8870 10.1 -M * 13.6 -M * SUCKER CREEK 8880 13.8 12.7 109 14.3 16.1 89 TIE CREEK 6870 5.7 3.9 146 12.2 13.3 92 ----- ----- Basin wide percent 101 82 BELLE FOURCHE COLE CANYON 5910 5.4 1.4 386 10.3 10.7 96 ----- ----- Basin wide percent 386 96 CHEYENNE RIVER BASIN BLIND PARK 6890 6.4 3.9 164 13.8 13.4 103 NORTH RAPID CREEK 6130 6.2 3.9 159 11.6 11.4 102 ----- ----- Basin wide percent 162 102 UPPER N. PLATTE ARAPAHO RIDGE 10960 23.1 21.5 107 23.0 24.7 93 BLACKHALL MTN 9820 29.8 -M * 30.4 -M * COLUMBINE 9160 23.0 20.7 111 25.6 27.3 94 DIVIDE PEAK 8880 16.1 18.3 88 21.2 23.2 91 JOE WRIGHT 10120 22.0 22.7 97 29.6 28.3 105 LAPRELE CREEK 8375 6.9 7.4 93 10.3 14.0 74 MED BOW 10500 5.7 -M * 32.7 -M * NORTH FRENCH CREEK 10130 27.4 32.2 85 26.4 29.1 91 NEVER SUMMER 10280 21.1 20.9 101 15.9 -M * OLD BATTLE 10000 30.5 33.5 91 31.9 37.5 85 RAWAH 9020 14.1 8.1 174 17.2 15.8 109 SAGE CREEK BASIN 7850 -M 4.2 * 11.5 15.4 75 SAND LAKE 10050 26.5 30.7 86 26.1 27.3 96 SOUTH BRUSH CREEK 8440 11.2 9.8 114 14.6 16.7 87 TOWER 10500 38.5 48.8 79 25.3 42.9 59 WEBBER SPRINGS 9250 22.5 21.8 103 25.4 28.8 88 WILLOW CREEK PASS 9540 18.1 13.5 134 17.8 14.7 121 ZIRKEL 9340 26.7 22.5 119 31.2 30.0 104 ----- ----- Basin wide percent 99 90 SWEETWATER DEER PARK 9700 13.9 16.4 85 15.9 22.1 72 LARSEN CREEK 9000 3.8 -M * 11.6 -M * SOUTH PASS 9040 12.5 15.3 82 11.5 19.0 61 ----- ----- Basin wide percent 83 67 LOWER N. PLATTE CASPER MTN. 7900 13.8 14.2 97 11.2 16.9 66 LAPRELE CREEK 8375 6.9 7.4 93 10.3 14.0 74 RENO HILL 8400 13.4 14.0 96 15.1 17.5 86 WINDY PEAK 7900 6.0 6.3 95 9.6 12.0 80 ----- ----- Basin wide percent 96 76 LARAMIE RIVER BROOKLYN LAKE 10240 21.1 22.5 94 21.0 23.3 90 CINNABAR PARK 9574 14.4 19.9 72 21.8 25.8 84 CROW CREEK 8330 5.8 .2 2900* 10.5 12.2 86 DEADMAN HILL 10220 18.0 17.7 102 17.5 19.4 90 RAWAH 9020 14.1 8.1 174 17.2 15.8 109 ROACH 9700 16.9 16.7 101 19.0 21.0 90 ----- ----- Basin wide percent 106 91 S. PLATTE BLACK MOUNTAIN 8920 12.1 -M * 14.0 -M * CROW CREEK 8330 5.8 .2 2900* 10.5 12.2 86 DEADMAN HILL 10220 18.0 17.7 102 17.5 19.4 90 ----- ----- Basin wide percent 133* 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 2.9 176 13.3 16.3 82 DIVIDE PEAK 8880 16.1 18.3 88 21.2 23.2 91 ELK RIVER 8700 -M 14.8 * -M 21.7 * LITTLE SNAKE RIVER 8915 23.6 23.6 100 29.2 31.3 93 OLD BATTLE 10000 30.5 33.5 91 31.9 37.5 85 SAGE CREEK BASIN 7850 -M 4.2 * 11.5 15.4 75 SANDSTONE RS 8150 9.5 9.6 99 14.5 19.8 73 WHISKEY PARK 8950 27.7 25.6 108 29.5 30.1 98 ----- ----- Basin wide percent 99 87 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.4 12.3 93 11.6 14.4 81 BLIND BULL SUM 8650 22.4 24.3 92 16.1 20.5 79 EAST RIM DIVIDE 7930 8.3 9.3 89 10.1 12.3 82 ELKHART PARK G.S. 9400 10.0 11.8 85 11.1 14.3 78 GROS VENTRE SUMMIT 8750 10.2 12.9 79 12.7 13.9 91 GUNSIGHT PASS 9820 12.1 13.6 89 13.3 15.2 88 KENDALL R.S. 7740 6.4 7.3 88 11.8 14.9 79 LOOMIS PARK 8240 11.2 12.3 91 15.2 18.2 84 NEW FORK LAKE 8340 6.9 8.1 85 7.7 11.5 67 POCKET CREEK 9360 9.7 -M * 11.3 -M * SNIDER BASIN 8060 9.0 10.4 87 14.9 15.0 99 SPRING CREEK DIVIDE 9000 26.1 23.6 111 25.0 25.2 99 TRIPLE PEAK 8500 22.5 19.2 117 25.6 26.7 96 ----- ----- Basin wide percent 95 87 LOWER GREEN RIVER BLACKS FORK JCT 8870 8.9 -M * 12.3 -M * BUCK PASTURE 9700 15.9 -M * 18.2 -M * EF BLACKS FORK GS 9308 16.6 -M * 12.6 -M * HAMS FORK 7840 7.4 5.7 130 10.3 12.3 84 HEWINTA 9519 15.0 7.4 203 15.1 15.3 99 HICKERSON PARK 9145 8.2 5.1 161 11.9 11.3 105 HOLE-IN-ROCK 9150 10.7 5.5 195 13.0 10.8 120 INDIAN CREEK 9425 24.3 23.5 103 20.7 24.0 86 KELLEY R.S. 8180 13.4 12.0 112 15.5 19.3 80 SPIRIT LK 10223 13.2 -M * 17.4 -M * STEEL CREEK PARK 10200 16.5 16.4 101 18.2 18.1 101 ----- ----- Basin wide percent 126 94 UPPER BEAR RIVER BEAR RIVER RS 8500 7.5 -M * 13.4 -M * BUG LAKE 7950 14.2 16.4 87 17.9 20.7 86 BURTS MILLER RANCH 8000 5.0 -M * 8.6 -M * CHALK CREEK #1 8993 22.6 24.5 92 24.3 27.2 89 HAYDEN FORK 9212 14.1 11.0 128 19.7 22.7 87 KELLEY R.S. 8180 13.4 12.0 112 15.5 19.3 80 LILY LAKE 9156 13.4 10.1 133 15.1 18.6 81 MONTE CRISTO 8960 23.7 27.3 87 24.8 27.9 89 SALT RIVER SUMMIT 7760 10.2 8.9 115 15.9 17.6 90 ----- ----- Basin wide percent 101 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.