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 THURSDAY: MARCH 1 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.3 16.0 114 21.4 18.6 115 BLACK BEAR 8170 29.2 32.9 89 29.4 33.3 88 BLIND BULL SUM 8650 19.9 23.1 86 15.7 19.1 82 COTTONWOOD CREEK 7670 17.3 18.5 94 22.2 23.0 97 EAST RIM DIVIDE 7930 10.2 11.0 93 10.6 10.2 104 GRAND TARGHEE 9260 30.1 -M * 24.3 -M * GRANITE CREEK 6770 15.0 16.1 93 15.2 17.4 87 GRASSY LAKE 7265 27.6 29.5 94 31.2 31.0 101 GROS VENTRE SUMMIT 8750 8.5 11.5 74 8.8 10.8 81 GUNSIGHT PASS 9820 10.6 -M * 11.3 -M * LEWIS LAKE DIVIDE 7850 26.0 29.7 88 29.3 31.5 93 PHILLIPS BENCH 8200 20.7 23.9 87 22.2 24.6 90 SALT RIVER SUMMIT 7760 9.9 12.2 81 10.5 15.8 66 SNAKE RIVER STATION 6920 16.6 16.6 100 21.7 19.5 111 SPRING CREEK DIVIDE 9000 20.5 22.2 92 20.4 22.5 91 THUMB DIVIDE 7980 13.4 15.4 87 14.4 16.0 90 TOGWOTEE PASS 9580 18.8 20.7 91 20.6 20.7 100 TWO OCEAN PLATEAU 9240 28.4 23.3 122 -M 23.4 * WILLOW CREEK 8380 22.7 25.4 89 27.8 27.0 103 YOUNTS PEAK 8350 14.8 14.6 101 14.2 13.6 104 ----- ----- Basin wide percent of average 93 95 MADISON BLACK BEAR 8170 29.2 32.9 89 29.4 33.3 88 CANYON 7870 10.7 11.3 95 12.1 13.0 93 MADISON PLATEAU 7750 18.1 20.9 87 21.9 22.1 99 WEST YELLOWSTONE 6700 9.8 11.2 88 12.5 11.1 113 WHISKEY CREEK 6800 12.8 14.4 89 16.0 17.4 92 ----- ----- Basin wide percent of average 89 95 UPPER YELLOWSTONE BEARTOOTH LAKE 9360 20.9 19.7 106 20.2 17.1 118 BURNT MTN 5880 5.0 5.0 100 9.8 11.3 87 CANYON 7870 10.7 11.3 95 12.1 13.0 93 COLE CREEK 7850 12.4 12.0 103 9.9 12.4 80 EVENING STAR 9200 24.4 25.0 98 26.3 21.8 121 FISHER CREEK 9100 28.5 29.6 96 27.7 30.6 91 NORTHEAST ENTRANCE 7350 9.3 9.7 96 10.8 10.8 100 PARKER PEAK 9400 19.2 18.2 105 18.9 13.7 138 SYLVAN LAKE 8420 15.7 18.8 84 20.6 17.9 115 THUMB DIVIDE 7980 13.4 15.4 87 14.4 16.0 90 TWO OCEAN PLATEAU 9240 28.4 23.3 122 -M 23.4 * WHITE MILL 8700 18.7 20.3 92 19.5 22.7 86 WOLVERINE 7650 11.9 10.6 112 11.2 11.2 100 ----- ----- Basin wide percent of average 100 101 WIND RIVER BURROUGHS CREEK 8750 12.9 12.6 102 13.1 13.7 96 CASTLE CREEK 8400 7.1 -M * 8.0 -M * COLD SPRINGS 9630 7.5 7.2 104 8.4 8.4 100 DEER PARK 9700 10.6 14.4 74 15.8 17.8 89 HOBBS PARK 10100 13.2 11.9 111 12.0 9.9 121 KIRWIN 9550 11.0 9.1 121 12.8 9.2 139 LITTLE WARM 9370 7.3 9.5 77 9.4 10.9 86 OWL CREEK 8975 4.5 4.1 110 5.0 4.4 114 SOUTH PASS 9040 12.9 14.0 92 12.6 15.0 84 ST. LAWRENCE ALT 8620 4.8 5.9 81 7.0 7.0 100 TOGWOTEE PASS 9580 18.8 20.7 91 20.6 20.7 100 TOWNSEND CREEK 8700 8.1 6.9 117 10.3 8.9 116 ----- ----- Basin wide percent of average 96 101 LOWER BIGHORN BASIN BALD MTN. 9380 18.4 16.0 115 13.4 14.1 95 BEAR TRAP MEADOW 8200 7.9 4.3 184 7.9 6.4 123 BONE SPRINGS DIV 9350 18.0 13.2 136 13.9 11.6 120 GRAVE SPRINGS 8550 8.2 7.3 112 9.5 7.8 122 KIRWIN 9550 11.0 9.1 121 12.8 9.2 139 MARQUETTE 8760 8.4 -M * 11.0 7.5 147 MIDDLE POWDER 7760 9.9 9.0 110 9.8 9.6 102 OWL CREEK 8975 4.5 4.1 110 5.0 4.4 114 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132 SHELL CREEK 9580 16.3 11.8 138 14.2 10.8 131 TIMBER CREEK 7950 4.6 4.2 110 8.2 5.4 152 ----- ----- Basin wide percent of average 126 123 SHOSHONE RIVER BLACKWATER 9780 21.5 20.4 105 20.9 17.2 122 EVENING STAR 9200 24.4 25.0 98 26.3 21.8 121 MARQUETTE 8760 8.4 -M * 11.0 7.5 147 SYLVAN LAKE 8420 15.7 18.8 84 20.6 17.9 115 SYLVAN ROAD 7120 12.1 11.4 106 15.7 15.6 101 YOUNTS PEAK 8350 14.8 14.6 101 14.2 13.6 104 ----- ----- Basin wide percent of average 98 116 POWDER BEAR TRAP MEADOW 8200 7.9 4.3 184 7.9 6.4 123 CLOUD PEAK RESERVOIR 9860 15.2 10.0 152 13.8 9.8 141 GRAVE SPRINGS 8550 8.2 7.3 112 9.5 7.8 122 HANSEN SAWMILL 8360 6.0 5.2 115 7.9 6.3 125 MIDDLE POWDER 7760 9.9 9.0 110 9.8 9.6 102 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132 SOLDIER PARK 8720 12.8 -M * 9.3 -M * ----- ----- Basin wide percent of average 132 124 TONGUE BIG GOOSE 7990 9.2 7.7 119 12.9 6.8 190 BONE SPRINGS DIV 9350 18.0 13.2 136 13.9 11.6 120 BURGESS JUNCTION 7880 11.5 9.0 128 13.4 9.5 141 DOME LAKE 8880 13.2 9.5 139 13.7 10.2 134 LITTLE GOOSE 8870 10.4 -M * 14.9 -M * SUCKER CREEK 8880 13.6 9.1 149 13.9 10.5 132 TIE CREEK 6870 6.9 4.9 141 12.9 7.9 163 ----- ----- Basin wide percent of average 136 143 BELLE FOURCHE COLE CANYON 5910 6.6 5.7 116 7.9 5.5 144 ----- ----- Basin wide percent of average 116 144 CHEYENNE BLIND PARK 6890 8.4 7.1 118 9.5 9.3 102 NORTH RAPID CREEK 6130 7.7 6.8 113 7.6 7.5 101 ----- ----- Basin wide percent of average 116 102 UPPER N. PLATTE RIVER ARAPAHOE 4020 -M -M * -M -M * BLACKHALL MTN 9820 20.5 -M * 21.9 -M * COLUMBINE 9160 17.9 21.9 82 18.3 20.9 88 DIVIDE PEAK 8880 13.3 15.6 85 17.2 17.0 101 JOE WRIGHT 10120 12.6 17.3 73 17.4 20.2 86 LAPRELE CREEK 8375 8.9 8.9 100 11.4 10.0 114 NORTH FRENCH CREEK 10130 18.4 22.7 81 18.1 20.2 90 NEVER SUMMER 10280 10.9 16.4 66 10.2 19.2 53 OLD BATTLE 10000 20.8 26.3 79 23.9 28.5 84 RAWAH 9020 7.4 12.2 61 9.9 13.1 76 SAGE CREEK BASIN 7850 13.5 9.0 150 9.7 9.9 98 SAND LAKE 10050 21.9 25.2 87 21.5 19.3 111 SOUTH BRUSH CREEK 8440 7.7 10.0 77 10.6 13.3 80 TOWER 10500 27.3 37.6 73 27.4 31.9 86 WEBBER SPRINGS 9250 16.0 21.3 75 19.6 22.1 89 WILLOW CREEK PASS 9540 -M 9.6 * 8.6 10.4 83 ZIRKEL 9340 22.7 22.6 100 23.2 21.5 108 ----- ----- Basin wide percent of average 82 89 SWEETWATER DEER PARK 9700 10.6 14.4 74 15.8 17.8 89 LARSEN CREEK 9000 10.5 -M * 12.5 -M * SOUTH PASS 9040 12.9 14.0 92 12.6 15.0 84 ----- ----- Basin wide percent of average 83 87 LOWER N. PLATTE CASPER MTN. 7900 17.6 11.3 156 17.1 11.1 154 LAPRELE CREEK 8375 8.9 8.9 100 11.4 10.0 114 RENO HILL 8400 15.0 10.4 144 16.5 11.5 143 WINDY PEAK 7900 6.8 6.0 113 8.6 8.5 101 ----- ----- Basin wide percent of average 132 130 LARAMIE BROOKLYN LAKE 10240 16.6 19.0 87 17.7 17.5 101 CINNABAR PARK 9574 15.3 15.9 96 18.8 17.2 109 CROW CREEK 8330 7.8 7.3 107 10.0 7.8 128 DEADMAN HILL 10220 15.7 13.0 121 14.5 13.3 109 RAWAH 9020 7.4 12.2 61 9.9 13.1 76 ROACH 9700 12.2 13.9 88 15.1 14.9 101 ----- ----- Basin wide percent of average 92 103 S. PLATTE BLACK MOUNTAIN 8920 10.0 -M * 12.1 -M * CROW CREEK 8330 7.8 7.3 107 10.0 7.8 128 DEADMAN HILL 10220 15.7 13.0 121 14.5 13.3 109 HOURGLASS LAKE 9380 10.5 -M * 11.3 -M * JOE WRIGHT 10120 12.6 17.3 73 17.4 20.2 86 LONG DRAW RESV 9980 10.2 -M * 11.7 -M * WILLOW PARK 10700 11.6 13.9 83 16.7 17.4 96 ----- ----- Basin wide percent of average 93 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.7 9.7 110 10.7 12.3 87 DIVIDE PEAK 8880 13.3 15.6 85 17.2 17.0 101 ELK RIVER 8700 13.9 16.1 86 14.0 16.1 87 LITTLE SNAKE RIVER 8915 18.6 -M * 22.4 -M * OLD BATTLE 10000 20.8 26.3 79 23.9 28.5 84 SAGE CREEK BASIN 7850 13.5 9.0 150 9.7 9.9 98 SANDSTONE RS 8150 10.3 12.5 82 11.2 15.7 71 WHISKEY PARK 8950 19.0 23.8 80 22.0 23.4 94 ----- ----- Basin wide percent of average 90 88 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.0 12.1 99 12.1 11.3 107 BLIND BULL SUM 8650 19.9 23.1 86 15.7 19.1 82 EAST RIM DIVIDE 7930 10.2 11.0 93 10.6 10.2 104 ELKHART PARK G.S. 9400 11.6 11.1 105 12.6 10.9 116 GROS VENTRE SUMMIT 8750 8.5 11.5 74 8.8 10.8 81 GUNSIGHT PASS 9820 10.6 -M * 11.3 -M * KENDALL R.S. 7740 13.5 12.4 109 14.1 12.5 113 LOOMIS PARK 8240 12.9 14.5 89 15.0 14.8 101 NEW FORK LAKE 8340 10.4 9.6 108 9.6 9.6 100 POCKET CREEK 9360 9.3 -M * 11.2 -M * SNIDER BASIN 8060 11.8 12.4 95 11.9 13.7 87 SPRING CREEK DIVIDE 9000 20.5 22.2 92 20.4 22.5 91 TRIPLE PEAK 8500 20.4 20.9 98 23.0 20.7 111 ----- ----- Basin wide percent of average 94 99 LOWER GREEN RIVER BLACKS FORK JCT 8870 4.8 -M * 9.5 -M * EF BLACKS FORK GS 9308 8.7 -M * 8.5 -M * HAMS FORK 7840 9.5 11.0 86 8.6 10.4 83 HEWINTA 9519 7.9 9.1 87 10.9 11.6 94 HICKERSON PARK 9145 8.2 5.8 141 10.9 6.2 176 HOLE-IN-ROCK 9150 7.2 5.7 126 10.5 5.8 181 INDIAN CREEK 9425 17.9 22.3 80 15.8 21.1 75 KELLEY R.S. 8180 11.7 14.0 84 13.6 17.2 79 SPIRIT LK 10223 9.5 -M * 15.0 -M * STEEL CREEK PARK 10200 5.6 12.7 44 12.3 12.9 95 ----- ----- Basin wide percent of average 84 97 UPPER BEAR RIVER BEAR RIVER RS 8500 6.1 -M * 8.8 -M * BUG LAKE 7950 12.8 17.1 75 13.8 16.2 85 BURTS MILLER RANCH 8000 5.3 -M * 9.2 -M * CHALK CREEK #1 8993 14.0 19.9 70 16.4 20.8 79 HAYDEN FORK 9212 10.6 13.2 80 15.3 17.1 89 KELLEY R.S. 8180 11.7 14.0 84 13.6 17.2 79 LILY LAKE 9156 8.7 10.8 81 10.4 14.3 73 MONTE CRISTO 8960 16.3 24.7 66 16.3 21.1 77 SALT RIVER SUMMIT 7760 9.9 12.2 81 10.5 15.8 66 ----- ----- Basin wide percent of average 75 79 ----------------------------------------------------------------------------- -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.