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 SUNDAY: FEBRUARY 19 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.2 14.8 103 18.3 17.2 106 COTTONWOOD CREEK 7670 13.6 16.6 82 18.5 21.3 87 EAST RIM DIVIDE 7930 8.5 10.1 84 9.3 9.4 99 GRAND TARGHEE 9260 25.2 -M * 21.2 -M * GRANITE CREEK 6770 11.5 14.7 78 12.3 16.0 77 GRASSY LAKE 7265 22.7 27.1 84 26.8 28.8 93 GROS VENTRE SUMMIT 8750 7.4 10.6 70 8.1 9.9 82 GUNSIGHT PASS 9820 8.9 -M * 9.9 -M * LEWIS LAKE DIVIDE 7850 21.2 27.2 78 25.7 28.9 89 PHILLIPS BENCH 8200 17.3 21.9 79 19.1 22.7 84 SALT RIVER SUMMIT 7760 8.2 11.2 73 9.0 14.6 62 SNAKE RIVER STATION 6920 13.9 15.1 92 18.6 18.0 103 SPRING CREEK DIVIDE 9000 15.6 20.3 77 16.1 20.9 77 THUMB DIVIDE 7980 11.4 13.9 82 12.8 14.7 87 TOGWOTEE PASS 9580 15.3 19.3 79 17.3 19.2 90 TWO OCEAN PLATEAU 9240 24.7 21.7 114 20.6 21.5 96 WILLOW CREEK 8380 18.4 23.4 79 23.6 25.0 94 ----- ----- Basin wide percent of average 84 89 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 17.4 18.7 93 17.1 15.9 108 BLACK BEAR 8170 24.7 30.4 81 25.9 30.4 85 CANYON 7870 8.9 10.6 84 10.4 12.1 86 FISHER CREEK 9100 24.0 27.6 87 23.8 28.2 84 MADISON PLATEAU 7750 14.7 19.3 76 18.5 20.3 91 NORTHEAST ENTRANCE 7350 6.7 9.1 74 -M 10.1 * PARKER PEAK 9400 16.5 17.0 97 16.9 12.7 133 SYLVAN LAKE 8420 12.9 17.5 74 17.8 16.8 106 THUMB DIVIDE 7980 11.4 13.9 82 12.8 14.7 87 TWO OCEAN PLATEAU 9240 24.7 21.7 114 20.6 21.5 96 WHISKEY CREEK 6800 10.1 13.3 76 13.2 16.0 82 WHITE MILL 8700 15.1 18.9 80 16.5 21.0 79 WOLVERINE 7650 9.5 10.0 95 9.8 10.4 94 ----- ----- Basin wide percent of average 86 92 WIND RIVER BURROUGHS CREEK 8750 10.2 11.8 86 10.4 12.8 81 CASTLE CREEK 8400 5.6 -M * 6.5 -M * COLD SPRINGS 9630 5.8 6.7 87 6.8 7.9 86 DEER PARK 9700 8.5 13.9 61 13.0 16.6 78 HOBBS PARK 10100 11.0 11.2 98 10.6 9.2 115 LITTLE WARM 9370 5.6 8.9 63 7.9 10.2 77 SOUTH PASS 9040 10.3 13.2 78 10.2 14.0 73 ST. LAWRENCE ALT 8620 4.1 5.4 76 5.9 6.5 91 TOGWOTEE PASS 9580 15.3 19.3 79 17.3 19.2 90 TOWNSEND CREEK 8700 6.6 6.5 102 9.2 8.3 111 ----- ----- Basin wide percent of average 80 87 BIGHORN BASIN BALD MTN. 9380 13.4 14.9 90 10.2 13.2 77 BEAR TRAP MEADOW 8200 4.9 4.0 122 5.9 6.0 98 BLACKWATER 9780 18.5 19.0 97 18.1 16.0 113 BONE SPRINGS DIV 9350 14.0 12.1 116 11.3 10.8 105 EVENING STAR 9200 20.6 23.2 89 22.3 20.2 110 GRAVE SPRINGS 8550 6.1 6.6 92 7.5 7.1 106 KIRWIN 9550 9.3 8.6 108 11.1 8.5 131 MARQUETTE 8760 6.6 -M * 10.2 7.0 146 MIDDLE POWDER 7760 7.5 8.3 90 8.4 9.0 93 OWL CREEK 8975 3.6 3.8 95 4.3 4.1 105 POWDER RIVER PASS 9480 7.2 8.1 89 8.9 9.3 96 SHELL CREEK 9580 11.6 11.0 105 9.9 10.3 96 SYLVAN LAKE 8420 12.9 17.5 74 17.8 16.8 106 SYLVAN ROAD 7120 9.7 10.5 92 13.3 14.8 90 TIMBER CREEK 7950 4.1 4.0 102 7.6 5.0 152 YOUNTS PEAK 8350 12.2 13.7 89 11.9 12.7 94 ----- ----- Basin wide percent of average 94 105 SHOSHONE RIVER BLACKWATER 9780 18.5 19.0 97 18.1 16.0 113 EVENING STAR 9200 20.6 23.2 89 22.3 20.2 110 KIRWIN 9550 9.3 8.6 108 11.1 8.5 131 MARQUETTE 8760 6.6 -M * 10.2 7.0 146 SYLVAN LAKE 8420 12.9 17.5 74 17.8 16.8 106 SYLVAN ROAD 7120 9.7 10.5 92 13.3 14.8 90 YOUNTS PEAK 8350 12.2 13.7 89 11.9 12.7 94 ----- ----- Basin wide percent of average 90 109 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.9 4.0 122 5.9 6.0 98 BIG GOOSE 7990 7.7 7.0 110 11.6 6.3 184 BONE SPRINGS DIV 9350 14.0 12.1 116 11.3 10.8 105 BURGESS JUNCTION 7880 9.3 8.4 111 11.5 8.8 131 CLOUD PEAK RESERVOIR 9860 12.4 9.2 135 11.5 9.2 125 DOME LAKE 8880 10.6 9.0 118 11.7 9.6 122 GRAVE SPRINGS 8550 6.1 6.6 92 7.5 7.1 106 HANSEN SAWMILL 8360 4.4 4.8 92 6.4 5.9 108 LITTLE GOOSE 8870 8.8 -M * 13.3 -M * MIDDLE POWDER 7760 7.5 8.3 90 8.4 9.0 93 POWDER RIVER PASS 9480 7.2 8.1 89 8.9 9.3 96 SOLDIER PARK 8720 9.8 -M * 7.9 -M * SUCKER CREEK 8880 11.2 8.4 133 11.6 9.8 118 TIE CREEK 6870 5.6 4.6 122 11.5 7.4 155 ----- ----- Basin wide percent of average 111 119 BELLE FOURCHE BLIND PARK 6890 5.3 6.2 85 6.0 8.7 69 COLE CANYON 5910 3.9 5.3 74 5.5 5.2 106 NORTH RAPID CREEK 6130 5.4 6.2 87 5.1 7.0 73 ----- ----- Basin wide percent of average 82 79 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 16.5 -M * 17.8 -M * CINNABAR PARK 9574 13.0 15.0 87 16.3 16.2 101 COLUMBINE 9160 13.9 20.0 70 14.8 19.2 77 DIVIDE PEAK 8880 11.1 14.5 77 14.7 15.7 94 ELK RIVER 8700 10.5 14.7 71 11.5 14.8 78 JOE WRIGHT 10120 11.8 16.0 74 15.3 18.6 82 NORTH FRENCH CREEK 10130 16.3 20.9 78 16.4 18.6 88 OLD BATTLE 10000 17.2 23.9 72 20.5 26.0 79 SAGE CREEK BASIN 7850 11.5 8.4 137 7.9 9.1 87 SOUTH BRUSH CREEK 8440 6.5 8.9 73 9.5 12.4 77 TOWER 10500 21.9 34.8 63 23.2 29.4 79 WEBBER SPRINGS 9250 13.0 19.2 68 16.5 20.4 81 WILLOW CREEK PASS 9540 -M 8.8 * 7.2 9.5 76 ----- ----- Basin wide percent of average 75 83 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 12.6 17.6 72 14.2 16.1 88 CASPER MTN. 7900 15.3 10.4 147 15.3 10.2 150 DEADMAN HILL 10220 13.3 12.0 111 12.4 12.1 102 DEER PARK 9700 8.5 13.9 61 13.0 16.6 78 LAPRELE CREEK 8375 7.4 8.2 90 10.0 9.2 109 RENO HILL 8400 12.6 9.5 133 14.1 10.6 133 ROACH 9700 10.7 12.9 83 13.6 13.5 101 SAND LAKE 10050 18.7 23.0 81 18.7 17.8 105 SOUTH PASS 9040 10.3 13.2 78 10.2 14.0 73 WINDY PEAK 7900 5.8 5.5 105 7.5 7.8 96 ----- ----- Basin wide percent of average 91 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.3 8.9 93 8.9 11.3 79 DIVIDE PEAK 8880 11.1 14.5 77 14.7 15.7 94 OLD BATTLE 10000 17.2 23.9 72 20.5 26.0 79 SANDSTONE RS 8150 7.7 11.4 68 9.3 14.4 65 WHISKEY PARK 8950 14.7 21.7 68 18.2 21.8 83 ----- ----- Basin wide percent of average 73 80 UPPER GREEN RIVER BIG SANDY OPENING 9080 9.7 11.1 87 10.1 10.4 97 BLIND BULL SUM 8650 15.9 21.2 75 13.4 17.6 76 EAST RIM DIVIDE 7930 8.5 10.1 84 9.3 9.4 99 ELKHART PARK G.S. 9400 9.2 10.2 90 10.6 10.1 105 GROS VENTRE SUMMIT 8750 7.4 10.6 70 8.1 9.9 82 GUNSIGHT PASS 9820 8.9 -M * 9.9 -M * KENDALL R.S. 7740 10.9 11.4 96 12.1 11.4 106 LOOMIS PARK 8240 10.3 13.2 78 12.5 13.6 92 NEW FORK LAKE 8340 8.6 8.9 97 8.2 8.9 92 POCKET CREEK 9360 7.1 -M * 9.7 -M * SNIDER BASIN 8060 8.9 11.4 78 9.4 12.7 74 SPRING CREEK DIVIDE 9000 15.6 20.3 77 16.1 20.9 77 TRIPLE PEAK 8500 15.7 19.2 82 18.3 18.9 97 ----- ----- Basin wide percent of average 82 89 LOWER GREEN RIVER HAMS FORK 7840 7.6 10.0 76 7.8 9.6 81 HEWINTA 9519 6.1 8.2 74 9.3 10.7 87 HICKERSON PARK 9145 7.3 5.3 138 10.0 5.8 172 HOLE-IN-ROCK 9150 6.3 5.1 124 9.3 5.4 172 INDIAN CREEK 9425 14.8 20.4 73 13.9 19.4 72 KELLEY R.S. 8180 10.4 12.7 82 12.5 15.9 79 STEEL CREEK PARK 10200 3.7 11.4 32 10.5 11.8 89 ----- ----- Basin wide percent of average 77 93 UPPER BEAR RIVER BUG LAKE 7950 9.9 15.6 63 11.8 14.9 79 HAYDEN FORK 9212 7.5 11.9 63 12.4 15.7 79 KELLEY R.S. 8180 10.4 12.7 82 12.5 15.9 79 LILY LAKE 9156 6.3 9.8 64 8.7 13.1 66 MONTE CRISTO 8960 13.1 22.3 59 13.8 19.4 71 SALT RIVER SUMMIT 7760 8.2 11.2 73 9.0 14.6 62 TRIAL LAKE 9992 9.5 18.7 51 9.9 18.6 53 ----- ----- Basin wide percent of average 64 70 ----------------------------------------------------------------------------- -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.