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: MARCH 7 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.9 16.6 114 22.0 19.3 114 BLACK BEAR 8170 31.3 34.8 90 31.4 34.8 90 BLIND BULL SUM 8650 20.8 24.2 86 16.2 19.7 82 COTTONWOOD CREEK 7670 17.9 19.7 91 22.9 23.9 96 EAST RIM DIVIDE 7930 10.7 11.5 93 10.9 10.6 103 GRAND TARGHEE 9260 32.0 -M * 25.8 -M * GRANITE CREEK 6770 15.2 16.9 90 15.8 18.1 87 GRASSY LAKE 7265 29.7 30.9 96 33.1 32.1 103 GROS VENTRE SUMMIT 8750 8.9 12.1 74 9.3 11.2 83 GUNSIGHT PASS 9820 11.2 -M * 12.0 -M * LEWIS LAKE DIVIDE 7850 27.4 31.0 88 30.3 32.8 92 PHILLIPS BENCH 8200 21.8 25.1 87 23.4 25.6 91 SALT RIVER SUMMIT 7760 10.4 12.7 82 11.0 16.4 67 SNAKE RIVER STATION 6920 17.5 17.3 101 22.6 20.1 112 SPRING CREEK DIVIDE 9000 21.3 23.1 92 21.1 23.3 91 THUMB DIVIDE 7980 14.1 16.3 87 14.9 16.7 89 TOGWOTEE PASS 9580 19.7 21.6 91 21.5 21.5 100 TWO OCEAN PLATEAU 9240 29.3 24.3 121 -M 24.4 * WILLOW CREEK 8380 24.0 26.5 91 28.9 28.1 103 YOUNTS PEAK 8350 15.2 15.2 100 14.6 14.1 104 ----- ----- Basin wide percent of average 93 95 MADISON-GALLATIN BLACK BEAR 8170 31.3 34.8 90 31.4 34.8 90 CANYON 7870 11.0 12.0 92 12.6 13.5 93 MADISON PLATEAU 7750 19.6 22.0 89 23.3 23.1 101 WEST YELLOWSTONE 6700 10.6 11.8 90 13.4 11.4 118 WHISKEY CREEK 6800 13.9 15.3 91 17.2 18.2 95 ----- ----- Basin wide percent of average 90 97 YELLOWSTONE BEARTOOTH LAKE 9360 22.3 20.8 107 21.7 17.8 122 BURNT MTN 5880 5.9 5.4 109 10.5 11.9 88 CANYON 7870 11.0 12.0 92 12.6 13.5 93 COLE CREEK 7850 13.0 12.6 103 10.5 13.0 81 EVENING STAR 9200 26.3 26.1 101 27.9 22.5 124 FISHER CREEK 9100 30.0 31.0 97 29.0 31.9 91 NORTHEAST ENTRANCE 7350 9.7 10.2 95 11.1 11.2 99 PARKER PEAK 9400 20.3 19.0 107 19.4 14.2 137 SYLVAN LAKE 8420 16.6 19.6 85 21.6 18.5 117 THUMB DIVIDE 7980 14.1 16.3 87 14.9 16.7 89 TWO OCEAN PLATEAU 9240 29.3 24.3 121 -M 24.4 * WHITE MILL 8700 19.6 21.4 92 20.4 23.6 86 WOLVERINE 7650 12.7 11.1 114 12.0 11.6 103 ----- ----- Basin wide percent of average 100 103 WIND RIVER BURROUGHS CREEK 8750 13.3 13.2 101 13.5 14.2 95 CASTLE CREEK 8400 7.4 -M * 8.4 -M * COLD SPRINGS 9630 7.8 7.7 101 8.7 8.7 100 DEER PARK 9700 10.9 14.8 74 16.3 18.7 87 HOBBS PARK 10100 13.5 12.6 107 12.4 10.3 120 KIRWIN 9550 11.4 9.6 119 13.2 9.6 138 LITTLE WARM 9370 7.8 10.0 78 9.8 11.3 87 OWL CREEK 8975 4.9 4.4 111 5.4 4.6 117 SOUTH PASS 9040 13.0 14.8 88 12.9 15.6 83 ST. LAWRENCE ALT 8620 4.9 6.3 78 7.1 7.3 97 TOGWOTEE PASS 9580 19.7 21.6 91 21.5 21.5 100 TOWNSEND CREEK 8700 8.3 7.3 114 10.8 9.3 116 ----- ----- Basin wide percent of average 94 100 BIGHORN BASIN BALD MTN. 9380 19.6 16.7 117 14.2 14.7 97 BEAR TRAP MEADOW 8200 8.4 4.7 179 8.3 6.7 124 BONE SPRINGS DIV 9350 18.7 13.8 136 14.5 12.1 120 GRAVE SPRINGS 8550 8.3 7.8 106 9.6 8.2 117 KIRWIN 9550 11.4 9.6 119 13.2 9.6 138 MARQUETTE 8760 8.9 -M * 1.0 7.8 13 MIDDLE POWDER 7760 10.1 9.5 106 10.1 10.0 101 OWL CREEK 8975 4.9 4.4 111 5.4 4.6 117 POWDER RIVER PASS 9480 11.9 9.2 129 13.7 10.4 132 SHELL CREEK 9580 17.0 12.3 138 14.9 11.2 133 TIMBER CREEK 7950 4.7 4.4 107 8.4 5.7 147 ----- ----- Basin wide percent of average 124 112 SHOSHONE RIVER BLACKWATER 9780 22.5 21.4 105 22.0 17.9 123 EVENING STAR 9200 26.3 26.1 101 27.9 22.5 124 MARQUETTE 8760 8.9 -M * 1.0 7.8 13 SYLVAN ROAD 7120 12.6 11.9 106 16.4 16.0 102 YOUNTS PEAK 8350 15.2 15.2 100 14.6 14.1 104 ----- ----- Basin wide percent of average 103 105 POWDER RIVER BEAR TRAP MEADOW 8200 8.4 4.7 179 8.3 6.7 124 CLOUD PEAK RESERVOIR 9860 15.8 10.6 149 14.4 10.2 141 GRAVE SPRINGS 8550 8.3 7.8 106 9.6 8.2 117 HANSEN SAWMILL 8360 6.0 5.5 109 8.1 6.6 123 MIDDLE POWDER 7760 10.1 9.5 106 10.1 10.0 101 POWDER RIVER PASS 9480 11.9 9.2 129 13.7 10.4 132 SOLDIER PARK 8720 13.0 -M * 9.5 -M * ----- ----- Basin wide percent of average 128 123 TONGUE RIVER BIG GOOSE 7990 9.5 8.1 117 13.1 7.0 187 BONE SPRINGS DIV 9350 18.7 13.8 136 14.5 12.1 120 BURGESS JUNCTION 7880 11.7 9.5 123 13.7 9.9 138 DOME LAKE 8880 14.2 9.9 143 14.1 10.6 133 LITTLE GOOSE 8870 10.8 -M * 15.2 -M * SUCKER CREEK 8880 14.0 9.7 144 14.4 11.0 131 TIE CREEK 6870 7.2 5.3 136 13.2 8.2 161 ----- ----- Basin wide percent of average 134 141 BELLE FOURCHE COLE CANYON 5910 6.6 5.9 112 8.1 5.7 142 ----- ----- Basin wide percent of average 112 142 CHEYENNE RIVER BASIN BLIND PARK 6890 8.6 7.7 112 9.9 9.6 103 NORTH RAPID CREEK 6130 7.9 7.1 111 7.9 7.7 103 ----- ----- Basin wide percent of average 111 103 UPPER N. PLATTE ARAPAHOE 4020 -M -M * -M -M * BLACKHALL MTN 9820 21.4 -M * 22.9 -M * COLUMBINE 9160 19.1 22.8 84 19.4 21.8 89 DIVIDE PEAK 8880 14.1 16.4 86 18.0 17.8 101 JOE WRIGHT 10120 13.4 18.0 74 18.3 21.1 87 LAPRELE CREEK 8375 8.8 9.4 94 11.4 10.5 109 NORTH FRENCH CREEK 10130 19.0 23.8 80 18.7 21.1 89 NEVER SUMMER 10280 11.7 17.1 68 10.8 20.0 54 OLD BATTLE 10000 21.8 27.6 79 25.7 29.8 86 RAWAH 9020 8.0 12.8 62 10.5 13.8 76 SAGE CREEK BASIN 7850 13.8 9.5 145 9.8 10.3 95 SAND LAKE 10050 22.9 26.6 86 22.5 20.1 112 SOUTH BRUSH CREEK 8440 8.0 10.7 75 10.8 13.9 78 TOWER 10500 28.7 39.1 73 28.6 33.3 86 WEBBER SPRINGS 9250 16.7 22.6 74 20.3 23.0 88 WILLOW CREEK PASS 9540 -M 10.0 * 9.2 10.8 85 ZIRKEL 9340 23.9 23.5 102 24.0 22.4 107 ----- ----- Basin wide percent of average 82 89 SWEETWATER DEER PARK 9700 10.9 14.8 74 16.3 18.7 87 LARSEN CREEK 9000 11.1 -M * 12.6 -M * SOUTH PASS 9040 13.0 14.8 88 12.9 15.6 83 ----- ----- Basin wide percent of average 81 85 LOWER N. PLATTE CASPER MTN. 7900 17.7 11.8 150 17.0 11.6 147 LAPRELE CREEK 8375 8.8 9.4 94 11.4 10.5 109 RENO HILL 8400 15.0 11.0 136 16.2 12.1 134 WINDY PEAK 7900 6.9 6.5 106 8.6 8.8 98 ----- ----- Basin wide percent of average 125 124 LARAMIE RIVER BROOKLYN LAKE 10240 17.3 19.8 87 18.5 18.3 101 CINNABAR PARK 9574 15.7 16.4 96 19.4 17.7 110 CROW CREEK 8330 7.7 7.6 101 10.0 8.2 122 DEADMAN HILL 10220 16.2 13.5 120 15.0 14.0 107 RAWAH 9020 8.0 12.8 62 10.5 13.8 76 ROACH 9700 12.6 14.5 87 15.7 15.6 101 ----- ----- Basin wide percent of average 92 102 S. PLATTE BLACK MOUNTAIN 8920 10.0 -M * 12.4 -M * CROW CREEK 8330 7.7 7.6 101 10.0 8.2 122 DEADMAN HILL 10220 16.2 13.5 120 15.0 14.0 107 ----- ----- Basin wide percent of average 113 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.7 10.4 112 11.1 13.0 85 DIVIDE PEAK 8880 14.1 16.4 86 18.0 17.8 101 ELK RIVER 8700 14.8 16.8 88 14.8 16.8 88 LITTLE SNAKE RIVER 8915 19.8 -M * 23.6 -M * OLD BATTLE 10000 21.8 27.6 79 25.7 29.8 86 SAGE CREEK BASIN 7850 13.8 9.5 145 9.8 10.3 95 SANDSTONE RS 8150 11.0 13.2 83 12.0 16.3 74 WHISKEY PARK 8950 21.0 25.3 83 23.5 24.4 96 ----- ----- Basin wide percent of average 91 89 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.3 12.6 98 12.3 11.8 104 BLIND BULL SUM 8650 20.8 24.2 86 16.2 19.7 82 EAST RIM DIVIDE 7930 10.7 11.5 93 10.9 10.6 103 ELKHART PARK G.S. 9400 11.9 11.6 103 12.8 11.4 112 GROS VENTRE SUMMIT 8750 8.9 12.1 74 9.3 11.2 83 GUNSIGHT PASS 9820 11.2 -M * 12.0 -M * KENDALL R.S. 7740 14.0 13.1 107 14.6 13.0 112 LOOMIS PARK 8240 13.3 15.2 88 15.4 15.4 100 NEW FORK LAKE 8340 10.8 10.0 108 9.9 10.0 99 POCKET CREEK 9360 9.2 -M * 11.3 -M * SNIDER BASIN 8060 12.5 13.0 96 12.5 14.2 88 SPRING CREEK DIVIDE 9000 21.3 23.1 92 21.1 23.3 91 TRIPLE PEAK 8500 21.3 21.8 98 23.9 21.6 111 ----- ----- Basin wide percent of average 94 98 LOWER GREEN RIVER BLACKS FORK JCT 8870 5.1 -M * 9.7 -M * BUCK PASTURE 9700 .1 -M * 3.1 -M * EF BLACKS FORK GS 9308 9.5 -M * 8.6 -M * HAMS FORK 7840 9.9 11.6 85 8.9 10.8 82 HEWINTA 9519 8.4 9.6 88 11.2 12.2 92 HICKERSON PARK 9145 8.4 6.1 138 11.1 6.5 171 HOLE-IN-ROCK 9150 7.4 6.0 123 10.7 6.1 175 INDIAN CREEK 9425 18.4 23.5 78 16.5 21.9 75 KELLEY R.S. 8180 12.0 14.7 82 14.0 17.8 79 SPIRIT LK 10223 9.7 -M * 15.3 -M * STEEL CREEK PARK 10200 -M 13.3 * 12.7 13.5 94 ----- ----- Basin wide percent of average 90 96 UPPER BEAR RIVER BEAR RIVER RS 8500 6.5 -M * 9.2 -M * BUG LAKE 7950 13.8 18.0 77 14.5 16.8 86 BURTS MILLER RANCH 8000 5.6 -M * 9.3 -M * CHALK CREEK #1 8993 14.4 21.0 69 16.8 21.7 77 HAYDEN FORK 9212 11.1 13.9 80 15.7 17.8 88 KELLEY R.S. 8180 12.0 14.7 82 14.0 17.8 79 LILY LAKE 9156 9.1 11.3 81 10.8 14.8 73 MONTE CRISTO 8960 17.4 26.0 67 17.4 22.1 79 SALT RIVER SUMMIT 7760 10.4 12.7 82 11.0 16.4 67 ----- ----- 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.