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 FRIDAY: MARCH 2 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.4 16.1 114 21.5 18.7 115 BLACK BEAR 8170 29.5 33.3 89 29.7 33.6 88 BLIND BULL SUM 8650 20.1 23.2 87 15.8 19.2 82 COTTONWOOD CREEK 7670 17.4 18.7 93 22.4 23.2 97 EAST RIM DIVIDE 7930 10.2 11.1 92 10.6 10.3 103 GRAND TARGHEE 9260 30.3 -M * 24.5 -M * GRANITE CREEK 6770 15.1 16.2 93 15.3 17.5 87 GRASSY LAKE 7265 28.1 29.8 94 31.6 31.2 101 GROS VENTRE SUMMIT 8750 8.5 11.6 73 8.9 10.8 82 GUNSIGHT PASS 9820 10.7 -M * 11.3 -M * LEWIS LAKE DIVIDE 7850 26.3 29.9 88 29.4 31.8 92 PHILLIPS BENCH 8200 21.0 24.1 87 22.5 24.8 91 SALT RIVER SUMMIT 7760 10.1 12.3 82 10.6 15.9 67 SNAKE RIVER STATION 6920 16.9 16.7 101 22.0 19.6 112 SPRING CREEK DIVIDE 9000 20.7 22.3 93 20.5 22.6 91 THUMB DIVIDE 7980 13.4 15.5 86 14.4 16.1 89 TOGWOTEE PASS 9580 18.9 20.9 90 20.7 20.8 100 TWO OCEAN PLATEAU 9240 28.6 23.5 122 -M 23.6 * WILLOW CREEK 8380 23.1 25.6 90 28.1 27.2 103 YOUNTS PEAK 8350 14.8 14.7 101 14.2 13.7 104 ----- ----- Basin wide percent of average 93 95 MADISON-GALLATIN BLACK BEAR 8170 29.5 33.3 89 29.7 33.6 88 CANYON 7870 10.8 11.4 95 12.2 13.1 93 MADISON PLATEAU 7750 18.2 21.1 86 22.0 22.3 99 WEST YELLOWSTONE 6700 9.9 11.4 87 12.6 11.2 112 WHISKEY CREEK 6800 12.9 14.5 89 16.1 17.5 92 ----- ----- Basin wide percent of average 89 95 YELLOWSTONE BEARTOOTH LAKE 9360 21.0 19.9 106 20.3 17.2 118 BURNT MTN 5880 5.1 5.0 102 9.8 11.4 86 CANYON 7870 10.8 11.4 95 12.2 13.1 93 COLE CREEK 7850 12.3 12.0 102 9.9 12.5 79 EVENING STAR 9200 24.5 25.2 97 26.4 21.9 121 FISHER CREEK 9100 28.6 29.9 96 27.8 30.8 90 NORTHEAST ENTRANCE 7350 9.4 9.8 96 10.9 10.9 100 PARKER PEAK 9400 19.4 18.3 106 18.9 13.8 137 SYLVAN LAKE 8420 15.7 18.8 84 20.7 18.0 115 THUMB DIVIDE 7980 13.4 15.5 86 14.4 16.1 89 TWO OCEAN PLATEAU 9240 28.6 23.5 122 -M 23.6 * WHITE MILL 8700 18.9 20.5 92 19.6 22.9 86 WOLVERINE 7650 12.0 10.7 112 11.3 11.2 101 ----- ----- Basin wide percent of average 100 101 WIND RIVER BURROUGHS CREEK 8750 12.9 12.7 102 13.1 13.8 95 CASTLE CREEK 8400 7.1 -M * 8.0 -M * COLD SPRINGS 9630 7.5 7.3 103 8.4 8.4 100 DEER PARK 9700 10.7 14.4 74 15.9 18.0 88 HOBBS PARK 10100 13.1 12.0 109 12.0 10.0 120 KIRWIN 9550 11.0 9.2 120 12.8 9.3 138 LITTLE WARM 9370 7.4 9.6 77 9.4 11.0 85 OWL CREEK 8975 4.5 4.2 107 5.0 4.4 114 SOUTH PASS 9040 12.9 14.1 91 12.6 15.1 83 ST. LAWRENCE ALT 8620 4.8 5.9 81 7.0 7.0 100 TOGWOTEE PASS 9580 18.9 20.9 90 20.7 20.8 100 TOWNSEND CREEK 8700 8.1 7.0 116 10.4 9.0 116 ----- ----- Basin wide percent of average 95 100 BIGHORN BASIN BALD MTN. 9380 18.5 16.1 115 13.4 14.2 94 BEAR TRAP MEADOW 8200 7.9 4.4 180 7.9 6.4 123 BONE SPRINGS DIV 9350 18.0 13.3 135 13.9 11.7 119 GRAVE SPRINGS 8550 8.2 7.4 111 9.5 7.9 120 KIRWIN 9550 11.0 9.2 120 12.8 9.3 138 MARQUETTE 8760 8.4 -M * 11.0 7.5 147 MIDDLE POWDER 7760 9.9 9.1 109 8.8 9.7 91 OWL CREEK 8975 4.5 4.2 107 5.0 4.4 114 POWDER RIVER PASS 9480 11.4 8.8 130 13.2 10.1 131 SHELL CREEK 9580 16.3 11.9 137 14.2 10.9 130 TIMBER CREEK 7950 4.6 4.2 110 8.2 5.4 152 ----- ----- Basin wide percent of average 124 121 SHOSHONE RIVER BLACKWATER 9780 21.6 20.6 105 21.0 17.3 121 EVENING STAR 9200 24.5 25.2 97 26.4 21.9 121 MARQUETTE 8760 8.4 -M * 11.0 7.5 147 SYLVAN ROAD 7120 12.1 11.5 105 15.7 15.7 100 YOUNTS PEAK 8350 14.8 14.7 101 14.2 13.7 104 ----- ----- Basin wide percent of average 101 116 POWDER RIVER BEAR TRAP MEADOW 8200 7.9 4.4 180 7.9 6.4 123 CLOUD PEAK RESERVOIR 9860 15.2 10.1 150 13.9 9.9 140 GRAVE SPRINGS 8550 8.2 7.4 111 9.5 7.9 120 HANSEN SAWMILL 8360 6.0 5.2 115 7.9 6.4 123 MIDDLE POWDER 7760 9.9 9.1 109 8.8 9.7 91 POWDER RIVER PASS 9480 11.4 8.8 130 13.2 10.1 131 SOLDIER PARK 8720 12.8 -M * 9.3 -M * ----- ----- Basin wide percent of average 130 121 TONGUE RIVER BIG GOOSE 7990 9.2 7.8 118 12.9 6.8 190 BONE SPRINGS DIV 9350 18.0 13.3 135 13.9 11.7 119 BURGESS JUNCTION 7880 11.5 9.0 128 13.4 9.6 140 DOME LAKE 8880 13.2 9.6 138 13.7 10.3 133 LITTLE GOOSE 8870 10.4 -M * 14.9 -M * SUCKER CREEK 8880 13.6 9.2 148 13.9 10.6 131 TIE CREEK 6870 6.9 5.0 138 12.9 7.9 163 ----- ----- Basin wide percent of average 134 142 BELLE FOURCHE COLE CANYON 5910 6.6 5.8 114 7.9 5.5 144 ----- ----- Basin wide percent of average 114 144 CHEYENNE RIVER BASIN BLIND PARK 6890 8.4 7.3 115 9.5 9.4 101 NORTH RAPID CREEK 6130 7.7 6.9 112 7.6 7.5 101 ----- ----- Basin wide percent of average 113 101 UPPER N. PLATTE ARAPAHOE 4020 -M -M * -M -M * BLACKHALL MTN 9820 20.5 -M * 22.0 -M * COLUMBINE 9160 18.1 22.0 82 18.4 21.0 88 DIVIDE PEAK 8880 13.4 15.8 85 17.2 17.2 100 JOE WRIGHT 10120 13.0 17.4 75 17.6 20.3 87 LAPRELE CREEK 8375 8.7 9.0 97 11.3 10.1 112 NORTH FRENCH CREEK 10130 18.6 22.8 82 18.3 20.3 90 NEVER SUMMER 10280 11.2 16.5 68 10.5 19.3 54 OLD BATTLE 10000 20.9 26.5 79 24.1 28.7 84 RAWAH 9020 7.7 12.3 63 10.1 13.2 77 SAGE CREEK BASIN 7850 13.4 9.2 146 9.7 10.0 97 SAND LAKE 10050 22.0 25.4 87 21.5 19.4 111 SOUTH BRUSH CREEK 8440 7.8 10.1 77 10.6 13.4 79 TOWER 10500 27.8 37.8 74 27.7 32.2 86 WEBBER SPRINGS 9250 16.1 21.6 75 19.8 22.2 89 WILLOW CREEK PASS 9540 -M 9.7 * 9.1 10.4 88 ZIRKEL 9340 22.9 22.7 101 23.4 21.7 108 ----- ----- Basin wide percent of average 82 89 SWEETWATER DEER PARK 9700 10.7 14.4 74 15.9 18.0 88 LARSEN CREEK 9000 10.4 -M * 12.4 -M * SOUTH PASS 9040 12.9 14.1 91 12.6 15.1 83 ----- ----- Basin wide percent of average 83 86 LOWER N. PLATTE CASPER MTN. 7900 17.6 11.4 154 17.2 11.2 154 LAPRELE CREEK 8375 8.7 9.0 97 11.3 10.1 112 RENO HILL 8400 15.0 10.5 143 16.4 11.6 141 WINDY PEAK 7900 6.7 6.1 110 8.6 8.5 101 ----- ----- Basin wide percent of average 130 129 LARAMIE RIVER BROOKLYN LAKE 10240 16.6 19.1 87 17.8 17.6 101 CINNABAR PARK 9574 15.2 16.0 95 18.8 17.3 109 CROW CREEK 8330 7.8 7.3 107 9.8 7.8 126 DEADMAN HILL 10220 15.8 13.1 121 14.8 13.4 110 RAWAH 9020 7.7 12.3 63 10.1 13.2 77 ROACH 9700 12.3 14.0 88 15.3 15.0 102 ----- ----- Basin wide percent of average 92 103 S. PLATTE BLACK MOUNTAIN 8920 10.0 -M * 12.2 -M * CROW CREEK 8330 7.8 7.3 107 9.8 7.8 126 DEADMAN HILL 10220 15.8 13.1 121 14.8 13.4 110 ----- ----- Basin wide percent of average 116 116 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.5 9.8 117 10.6 12.4 85 DIVIDE PEAK 8880 13.4 15.8 85 17.2 17.2 100 ELK RIVER 8700 14.2 16.2 88 14.2 16.2 88 LITTLE SNAKE RIVER 8915 18.9 -M * 22.6 -M * OLD BATTLE 10000 20.9 26.5 79 24.1 28.7 84 SAGE CREEK BASIN 7850 13.4 9.2 146 9.7 10.0 97 SANDSTONE RS 8150 10.5 12.6 83 11.4 15.8 72 WHISKEY PARK 8950 19.4 24.1 80 22.4 23.6 95 ----- ----- Basin wide percent of average 90 88 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.9 12.2 98 11.9 11.4 104 BLIND BULL SUM 8650 20.1 23.2 87 15.8 19.2 82 EAST RIM DIVIDE 7930 10.2 11.1 92 10.6 10.3 103 ELKHART PARK G.S. 9400 11.6 11.2 104 12.6 11.0 115 GROS VENTRE SUMMIT 8750 8.5 11.6 73 8.9 10.8 82 GUNSIGHT PASS 9820 10.7 -M * 11.3 -M * KENDALL R.S. 7740 13.6 12.5 109 14.1 12.6 112 LOOMIS PARK 8240 13.0 14.6 89 15.1 14.9 101 NEW FORK LAKE 8340 10.5 9.7 108 9.6 9.7 99 POCKET CREEK 9360 9.2 -M * 11.2 -M * SNIDER BASIN 8060 11.8 12.5 94 11.9 13.8 86 SPRING CREEK DIVIDE 9000 20.7 22.3 93 20.5 22.6 91 TRIPLE PEAK 8500 20.6 21.0 98 23.1 20.9 111 ----- ----- Basin wide percent of average 94 98 LOWER GREEN RIVER BLACKS FORK JCT 8870 4.6 -M * 9.4 -M * BUCK PASTURE 9700 .1 -M * 3.2 -M * EF BLACKS FORK GS 9308 8.5 -M * 8.4 -M * HAMS FORK 7840 9.5 11.1 86 8.9 10.5 85 HEWINTA 9519 7.8 9.2 85 10.8 11.7 92 HICKERSON PARK 9145 8.0 5.9 136 10.5 6.3 167 HOLE-IN-ROCK 9150 7.2 5.8 124 10.5 5.8 181 INDIAN CREEK 9425 18.0 22.5 80 16.0 21.2 75 KELLEY R.S. 8180 11.8 14.1 84 13.7 17.3 79 SPIRIT LK 10223 9.5 -M * 14.9 -M * STEEL CREEK PARK 10200 -M 12.8 * 12.3 13.0 95 ----- ----- Basin wide percent of average 91 96 UPPER BEAR RIVER BEAR RIVER RS 8500 6.1 -M * 8.8 -M * BUG LAKE 7950 13.2 17.3 76 14.1 16.3 87 BURTS MILLER RANCH 8000 5.3 -M * 9.1 -M * CHALK CREEK #1 8993 14.0 20.1 70 16.4 21.0 78 HAYDEN FORK 9212 10.6 13.3 80 15.3 17.2 89 KELLEY R.S. 8180 11.8 14.1 84 13.7 17.3 79 LILY LAKE 9156 8.7 10.9 80 10.4 14.4 72 MONTE CRISTO 8960 17.1 24.9 69 16.9 21.3 79 SALT RIVER SUMMIT 7760 10.1 12.3 82 10.6 15.9 67 ----- ----- Basin wide percent of average 76 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.