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: FEBRUARY 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 14.4 12.7 113 16.8 14.9 113 COTTONWOOD CREEK 7670 12.1 14.2 85 16.9 18.7 90 EAST RIM DIVIDE 7930 8.0 8.5 94 8.9 8.1 110 GRAND TARGHEE 9260 22.3 -M * 19.1 -M * GRANITE CREEK 6770 10.8 12.4 87 11.7 13.7 85 GRASSY LAKE 7265 20.6 23.0 90 24.4 25.0 98 GROS VENTRE SUMMIT 8750 7.1 9.5 75 7.7 8.7 89 GUNSIGHT PASS 9820 8.5 -M * 9.4 -M * LEWIS LAKE DIVIDE 7850 19.4 23.1 84 23.8 24.9 96 PHILLIPS BENCH 8200 16.2 18.5 88 17.9 19.5 92 SALT RIVER SUMMIT 7760 7.4 9.2 80 8.1 12.6 64 SNAKE RIVER STATION 6920 12.6 12.6 100 17.2 15.6 110 SPRING CREEK DIVIDE 9000 14.6 17.4 84 14.9 18.3 81 THUMB DIVIDE 7980 10.4 11.8 88 11.9 12.7 94 TOGWOTEE PASS 9580 14.1 16.9 83 16.0 16.8 95 TWO OCEAN PLATEAU 9240 23.3 19.0 123 19.8 18.5 107 WILLOW CREEK 8380 16.2 20.2 80 21.5 21.8 99 ----- ----- Basin wide percent of average 90 95 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 16.5 16.2 102 16.2 14.0 116 BLACK BEAR 8170 22.8 25.6 89 23.6 26.1 90 CANYON 7870 8.1 8.9 91 9.6 10.8 89 FISHER CREEK 9100 22.8 23.8 96 22.4 24.6 91 MADISON PLATEAU 7750 13.5 16.2 83 17.1 17.5 98 NORTHEAST ENTRANCE 7350 6.0 7.7 78 8.1 8.9 91 PARKER PEAK 9400 15.0 14.8 101 15.6 11.1 141 SYLVAN LAKE 8420 11.5 15.2 76 16.4 14.8 111 THUMB DIVIDE 7980 10.4 11.8 88 11.9 12.7 94 TWO OCEAN PLATEAU 9240 23.3 19.0 123 19.8 18.5 107 WHISKEY CREEK 6800 9.3 11.1 84 12.6 13.8 91 WHITE MILL 8700 14.0 16.1 87 15.5 18.3 85 WOLVERINE 7650 8.9 8.6 103 9.2 9.2 100 ----- ----- Basin wide percent of average 93 99 WIND RIVER BURROUGHS CREEK 8750 9.8 10.1 97 10.2 11.3 90 CASTLE CREEK 8400 5.3 -M * 6.3 -M * COLD SPRINGS 9630 5.5 6.0 92 6.5 7.1 92 DEER PARK 9700 7.5 11.7 64 12.1 14.5 83 HOBBS PARK 10100 10.0 9.8 102 9.7 8.2 118 LITTLE WARM 9370 5.2 7.8 67 7.4 9.1 81 SOUTH PASS 9040 9.2 11.4 81 9.3 12.2 76 ST. LAWRENCE ALT 8620 3.6 4.8 75 5.4 5.7 95 TOGWOTEE PASS 9580 14.1 16.9 83 16.0 16.8 95 TOWNSEND CREEK 8700 5.6 5.6 100 7.9 7.3 108 ----- ----- Basin wide percent of average 84 92 BIGHORN BASIN BALD MTN. 9380 12.0 13.5 89 9.2 11.8 78 BEAR TRAP MEADOW 8200 4.4 3.5 126 5.6 5.5 102 BLACKWATER 9780 17.0 16.6 102 17.0 14.2 120 BONE SPRINGS DIV 9350 12.9 10.6 122 10.4 9.6 108 EVENING STAR 9200 19.2 19.7 97 21.0 17.6 119 GRAVE SPRINGS 8550 5.7 5.7 100 7.2 6.4 112 KIRWIN 9550 8.8 7.7 114 10.7 7.6 141 MARQUETTE 8760 5.7 -M * 9.7 6.2 156 MIDDLE POWDER 7760 7.0 7.2 97 8.3 8.3 100 OWL CREEK 8975 3.2 3.4 94 4.0 3.7 108 POWDER RIVER PASS 9480 6.5 7.2 90 8.1 8.3 98 SHELL CREEK 9580 10.6 9.9 107 9.2 9.3 99 SYLVAN LAKE 8420 11.5 15.2 76 16.4 14.8 111 SYLVAN ROAD 7120 8.9 8.8 101 12.4 13.3 93 TIMBER CREEK 7950 3.6 3.6 100 7.2 4.5 160 YOUNTS PEAK 8350 11.6 12.0 97 11.4 11.4 100 ----- ----- Basin wide percent of average 99 110 SHOSHONE RIVER BLACKWATER 9780 17.0 16.6 102 17.0 14.2 120 EVENING STAR 9200 19.2 19.7 97 21.0 17.6 119 KIRWIN 9550 8.8 7.7 114 10.7 7.6 141 MARQUETTE 8760 5.7 -M * 9.7 6.2 156 SYLVAN LAKE 8420 11.5 15.2 76 16.4 14.8 111 SYLVAN ROAD 7120 8.9 8.8 101 12.4 13.3 93 YOUNTS PEAK 8350 11.6 12.0 97 11.4 11.4 100 ----- ----- Basin wide percent of average 96 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 4.4 3.5 126 5.6 5.5 102 BIG GOOSE 7990 7.1 6.0 118 10.9 5.7 191 BONE SPRINGS DIV 9350 12.9 10.6 122 10.4 9.6 108 BURGESS JUNCTION 7880 8.5 7.4 115 10.9 7.9 138 CLOUD PEAK RESERVOIR 9860 11.6 8.1 143 11.2 8.2 137 DOME LAKE 8880 10.4 7.9 132 11.3 8.7 130 GRAVE SPRINGS 8550 5.7 5.7 100 7.2 6.4 112 HANSEN SAWMILL 8360 3.9 4.2 93 6.0 5.3 113 LITTLE GOOSE 8870 7.8 -M * 12.4 -M * MIDDLE POWDER 7760 7.0 7.2 97 8.3 8.3 100 POWDER RIVER PASS 9480 6.5 7.2 90 8.1 8.3 98 SOLDIER PARK 8720 9.3 -M * 7.4 -M * SUCKER CREEK 8880 10.3 7.2 143 11.0 8.8 125 TIE CREEK 6870 5.2 4.0 130 11.0 6.8 162 ----- ----- Basin wide percent of average 118 125 BELLE FOURCHE BLIND PARK 6890 5.0 5.2 96 6.0 7.8 77 COLE CANYON 5910 3.9 4.5 87 5.5 4.7 117 NORTH RAPID CREEK 6130 5.4 5.0 108 5.1 6.3 81 ----- ----- Basin wide percent of average 97 88 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 14.2 -M * 15.7 -M * CINNABAR PARK 9574 9.8 13.2 74 13.1 14.3 92 COLUMBINE 9160 11.2 16.5 68 12.6 16.7 75 DIVIDE PEAK 8880 8.7 13.0 67 12.5 13.7 91 ELK RIVER 8700 8.3 12.2 68 9.5 12.7 75 JOE WRIGHT 10120 9.9 13.9 71 13.4 16.2 83 NORTH FRENCH CREEK 10130 12.1 18.4 66 12.5 16.4 76 OLD BATTLE 10000 14.2 20.0 71 17.5 22.4 78 SAGE CREEK BASIN 7850 8.7 7.5 116 7.1 7.9 90 SOUTH BRUSH CREEK 8440 4.3 7.4 58 7.3 10.9 67 TOWER 10500 17.0 30.1 56 18.9 25.4 74 WEBBER SPRINGS 9250 11.0 16.1 68 14.7 18.0 82 WILLOW CREEK PASS 9540 -M 7.5 * 6.8 8.3 82 ----- ----- Basin wide percent of average 68 80 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 10.0 15.3 65 11.7 14.3 82 CASPER MTN. 7900 12.9 9.0 143 13.7 8.9 154 DEADMAN HILL 10220 11.2 10.6 106 10.4 10.6 98 DEER PARK 9700 7.5 11.7 64 12.1 14.5 83 LAPRELE CREEK 8375 6.2 7.3 85 8.6 8.1 106 RENO HILL 8400 11.1 8.4 132 12.7 9.3 137 ROACH 9700 9.0 11.0 82 11.6 11.7 99 SAND LAKE 10050 14.7 19.9 74 15.0 15.9 94 SOUTH PASS 9040 9.2 11.4 81 9.3 12.2 76 WINDY PEAK 7900 4.7 4.5 104 6.4 7.0 91 ----- ----- Basin wide percent of average 88 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 6.2 7.8 79 7.0 9.9 71 DIVIDE PEAK 8880 8.7 13.0 67 12.5 13.7 91 OLD BATTLE 10000 14.2 20.0 71 17.5 22.4 78 SANDSTONE RS 8150 5.6 9.7 58 7.5 12.5 60 WHISKEY PARK 8950 11.3 18.5 61 15.3 19.4 79 ----- ----- Basin wide percent of average 67 77 UPPER GREEN RIVER BIG SANDY OPENING 9080 8.8 9.5 93 9.3 9.0 103 BLIND BULL SUM 8650 15.1 18.4 82 12.6 15.4 82 EAST RIM DIVIDE 7930 8.0 8.5 94 8.9 8.1 110 ELKHART PARK G.S. 9400 8.6 8.8 98 10.1 8.9 113 GROS VENTRE SUMMIT 8750 7.1 9.5 75 7.7 8.7 89 GUNSIGHT PASS 9820 8.5 -M * 9.4 -M * KENDALL R.S. 7740 10.6 9.8 108 11.7 9.7 121 LOOMIS PARK 8240 9.7 11.2 87 11.9 11.8 101 NEW FORK LAKE 8340 8.2 7.6 108 8.0 7.9 101 POCKET CREEK 9360 6.7 -M * 9.3 -M * SNIDER BASIN 8060 8.3 9.8 85 8.9 11.1 80 SPRING CREEK DIVIDE 9000 14.6 17.4 84 14.9 18.3 81 TRIPLE PEAK 8500 15.0 16.6 90 17.6 16.2 109 ----- ----- Basin wide percent of average 90 97 LOWER GREEN RIVER HAMS FORK 7840 6.9 8.4 82 7.1 8.4 85 HEWINTA 9519 4.9 6.7 73 7.8 9.3 84 HICKERSON PARK 9145 5.2 4.4 118 8.1 5.2 156 HOLE-IN-ROCK 9150 4.8 4.1 117 7.6 4.8 158 INDIAN CREEK 9425 13.7 17.6 78 12.6 16.8 75 KELLEY R.S. 8180 9.5 10.7 89 11.5 13.9 83 STEEL CREEK PARK 10200 -M 9.4 * 9.0 10.1 89 ----- ----- Basin wide percent of average 87 93 UPPER BEAR RIVER BUG LAKE 7950 9.2 13.2 70 10.8 12.9 84 HAYDEN FORK 9212 6.7 9.8 68 11.6 13.6 85 KELLEY R.S. 8180 9.5 10.7 89 11.5 13.9 83 LILY LAKE 9156 5.2 8.2 63 7.8 11.5 68 MONTE CRISTO 8960 11.7 18.2 64 12.9 16.7 77 SALT RIVER SUMMIT 7760 7.4 9.2 80 8.1 12.6 64 TRIAL LAKE 9992 8.7 15.7 55 9.0 15.8 57 ----- ----- Basin wide percent of average 69 74 ----------------------------------------------------------------------------- -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.