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: DECEMBER 26 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.5 7.3 89 12.9 9.4 137 COTTONWOOD CREEK 7670 6.5 8.6 76 9.7 12.2 80 GRAND TARGHEE 9260 20.1 -M * 15.6 -M * GRANITE CREEK 6770 4.3 6.6 65 10.0 8.6 116 GRASSY LAKE 7265 10.8 13.1 82 18.6 15.5 120 GROS VENTRE SUMMIT 8750 5.9 6.2 95 7.4 5.9 125 GUNSIGHT PASS 9820 3.7 -M * 7.1 -M * LEWIS LAKE DIVIDE 7850 12.5 13.1 95 18.5 15.8 117 PHILLIPS BENCH 8200 8.9 11.3 79 13.3 12.1 110 SALT RIVER SUMMIT 7760 2.5 4.7 53 5.0 8.0 62 SNAKE RIVER STATION 6920 5.3 7.0 76 13.1 10.0 131 SPRING CREEK DIVIDE 9000 6.4 11.4 56 7.6 11.7 65 THUMB DIVIDE 7980 5.7 6.8 84 9.5 8.2 116 TOGWOTEE PASS 9580 12.1 10.6 114 13.8 10.9 127 TWO OCEAN PLATEAU 9240 17.4 12.3 141 16.1 12.3 131 WILLOW CREEK 8380 8.7 12.8 68 14.4 14.1 102 ----- ----- Basin wide percent of average 86 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.2 10.3 118 11.7 9.1 129 BLACK BEAR 8170 18.4 15.5 119 20.1 15.9 126 CANYON 7870 6.6 5.3 125 9.7 7.1 137 FISHER CREEK 9100 20.0 14.8 135 18.4 15.4 119 MADISON PLATEAU 7750 11.1 10.1 110 14.9 11.3 132 NORTHEAST ENTRANCE 7350 2.5 4.5 56 6.7 5.9 114 PARKER PEAK 9400 12.1 9.5 127 11.3 7.6 149 SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130 THUMB DIVIDE 7980 5.7 6.8 84 9.5 8.2 116 TWO OCEAN PLATEAU 9240 17.4 12.3 141 16.1 12.3 131 WHISKEY CREEK 6800 6.5 6.7 97 12.2 9.0 136 WHITE MILL 8700 12.4 10.2 122 12.2 11.7 104 WOLVERINE 7650 3.7 5.1 73 7.4 6.5 114 ----- ----- Basin wide percent of average 114 126 WIND RIVER BURROUGHS CREEK 8750 7.6 6.1 125 10.3 7.3 141 COLD SPRINGS 9630 1.9 4.4 43 4.7 5.4 87 DEER PARK 9700 4.8 6.1 79 8.2 10.1 81 HOBBS PARK 10100 4.5 7.2 62 6.1 6.0 102 LITTLE WARM 9370 3.9 4.9 80 6.5 6.2 105 SOUTH PASS 9040 4.1 7.5 55 7.2 8.6 84 ST. LAWRENCE ALT 8620 2.3 3.6 64 4.0 4.4 91 TOGWOTEE PASS 9580 12.1 10.6 114 13.8 10.9 127 TOWNSEND CREEK 8700 2.5 4.1 61 5.7 5.7 100 ----- ----- Basin wide percent of average 80 103 BIGHORN BASIN BALD MTN. 9380 6.1 8.9 69 6.8 7.7 88 BEAR TRAP MEADOW 8200 3.5 2.4 146 5.0 4.3 116 BLACKWATER 9780 11.8 11.0 107 11.2 10.1 111 BONE SPRINGS DIV 9350 6.2 7.3 85 6.3 6.7 94 EVENING STAR 9200 13.4 12.4 108 14.2 11.9 119 GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.5 113 KIRWIN 9550 6.6 5.5 120 7.9 5.5 144 MARQUETTE 8760 1.4 4.7 30 5.5 5.1 108 MIDDLE POWDER 7760 4.0 5.2 77 4.8 6.4 75 OWL CREEK 8975 2.5 2.5 100 4.2 2.8 150 POWDER RIVER PASS 9480 4.4 4.8 92 6.3 5.6 112 SHELL CREEK 9580 7.3 6.9 106 7.7 6.2 124 SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130 SYLVAN ROAD 7120 4.3 5.5 78 12.0 9.5 126 TIMBER CREEK 7950 1.5 2.9 52 5.4 3.6 150 YOUNTS PEAK 8350 7.5 7.1 106 10.1 7.4 136 ----- ----- Basin wide percent of average 92 117 SHOSHONE RIVER BLACKWATER 9780 11.8 11.0 107 11.2 10.1 111 EVENING STAR 9200 13.4 12.4 108 14.2 11.9 119 KIRWIN 9550 6.6 5.5 120 7.9 5.5 144 MARQUETTE 8760 1.4 4.7 30 5.5 5.1 108 SYLVAN LAKE 8420 8.8 9.5 93 13.3 10.2 130 SYLVAN ROAD 7120 4.3 5.5 78 12.0 9.5 126 YOUNTS PEAK 8350 7.5 7.1 106 10.1 7.4 136 ----- ----- Basin wide percent of average 97 124 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.5 2.4 146 5.0 4.3 116 BIG GOOSE 7990 3.7 4.0 92 6.6 4.3 153 BONE SPRINGS DIV 9350 6.2 7.3 85 6.3 6.7 94 BURGESS JUNCTION 7880 4.5 5.2 87 6.6 5.7 116 CLOUD PEAK RESERVOIR 9860 5.8 5.3 109 7.1 6.1 116 DOME LAKE 8880 4.4 5.7 77 7.8 6.5 120 GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.5 113 HANSEN SAWMILL 8360 2.9 2.9 100 5.0 4.1 122 MIDDLE POWDER 7760 4.0 5.2 77 4.8 6.4 75 POWDER RIVER PASS 9480 4.4 4.8 92 6.3 5.6 112 SUCKER CREEK 8880 4.8 4.9 98 6.3 6.2 102 TIE CREEK 6870 1.8 2.2 82 5.8 4.8 121 ----- ----- Basin wide percent of average 92 112 BELLE FOURCHE BLIND PARK 6890 1.6 3.2 50 3.7 5.8 64 COLE CANYON 5910 1.4 3.0 47 3.0 3.7 81 NORTH RAPID CREEK 6130 2.3 2.9 79 2.9 5.0 58 ----- ----- Basin wide percent of average 58 66 UPPER N. PLATTE RIVER COLUMBINE 9160 6.0 8.7 69 9.5 10.3 92 DIVIDE PEAK 8880 9.5 8.2 116 10.1 9.2 110 ELK RIVER 8700 6.7 6.2 108 9.4 8.0 118 JOE WRIGHT 10120 9.0 8.8 102 11.2 10.9 103 NORTH FRENCH CREEK 10130 11.7 12.1 97 12.8 10.9 117 OLD BATTLE 10000 12.0 13.5 89 14.9 14.5 103 SAGE CREEK BASIN 7850 6.8 4.8 142 8.2 5.3 155 SOUTH BRUSH CREEK 8440 5.6 4.6 122 8.9 7.2 124 TOWER 10500 11.9 18.8 63 15.1 16.2 93 WEBBER SPRINGS 9250 8.9 10.4 86 11.7 11.9 98 WILLOW CREEK PASS 9540 6.6 5.1 129 7.8 6.0 130 ----- ----- Basin wide percent of average 94 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.6 9.7 78 9.0 9.3 97 CASPER MTN. 7900 4.6 6.5 71 7.3 6.8 107 DEADMAN HILL 10220 7.1 7.0 101 7.3 7.3 100 DEER PARK 9700 4.8 6.1 79 8.2 10.1 81 LAPRELE CREEK 8375 1.8 4.9 37 4.7 5.7 82 RENO HILL 8400 5.2 6.1 85 6.8 6.7 101 ROACH 9700 7.9 6.6 120 9.8 7.7 127 SAND LAKE 10050 10.8 13.7 79 11.3 10.6 107 SOUTH PASS 9040 4.1 7.5 55 7.2 8.6 84 WINDY PEAK 7900 2.7 3.3 82 4.3 5.1 84 ----- ----- Basin wide percent of average 79 97 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.0 3.4 147 7.7 6.5 118 DIVIDE PEAK 8880 9.5 8.2 116 10.1 9.2 110 OLD BATTLE 10000 12.0 13.5 89 14.9 14.5 103 SANDSTONE RS 8150 6.0 4.5 133 9.2 8.0 115 WHISKEY PARK 8950 9.1 9.8 93 13.2 11.9 111 ----- ----- Basin wide percent of average 106 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.0 6.3 63 4.8 6.1 79 BLIND BULL SUM 8650 7.6 11.9 64 7.6 10.1 75 EAST RIM DIVIDE 7930 1.6 5.3 30 4.3 5.2 83 ELKHART PARK G.S. 9400 3.6 5.7 63 4.9 6.2 79 GROS VENTRE SUMMIT 8750 5.9 6.2 95 7.4 5.9 125 GUNSIGHT PASS 9820 3.7 -M * 7.1 -M * KENDALL R.S. 7740 3.1 5.9 53 5.6 6.2 90 LOOMIS PARK 8240 5.1 7.3 70 6.3 7.5 84 NEW FORK LAKE 8340 2.7 4.8 56 3.7 5.4 69 SNIDER BASIN 8060 2.5 6.2 40 4.2 7.1 59 SPRING CREEK DIVIDE 9000 6.4 11.4 56 7.6 11.7 65 TRIPLE PEAK 8500 7.2 10.7 67 10.0 10.1 99 ----- ----- Basin wide percent of average 61 81 LOWER GREEN RIVER HAMS FORK 7840 1.9 4.8 40 3.5 5.2 67 HEWINTA 9519 1.9 3.6 53 6.8 6.6 103 HICKERSON PARK 9145 1.3 2.5 52 3.8 4.0 95 HOLE-IN-ROCK 9150 1.1 2.4 46 4.5 3.7 122 INDIAN CREEK 9425 6.3 11.2 56 6.9 10.9 63 KELLEY R.S. 8180 3.7 6.9 54 6.4 9.0 71 STEEL CREEK PARK 10200 3.2 6.1 52 7.7 7.0 110 ----- ----- Basin wide percent of average 52 85 UPPER BEAR RIVER BUG LAKE 7950 3.1 7.2 43 5.0 8.4 60 HAYDEN FORK 9212 4.2 5.5 76 7.5 9.1 82 KELLEY R.S. 8180 3.7 6.9 54 6.4 9.0 71 LILY LAKE 9156 2.8 4.9 57 6.7 8.0 84 MONTE CRISTO 8960 6.4 9.6 67 8.1 11.0 74 SALT RIVER SUMMIT 7760 2.5 4.7 53 5.0 8.0 62 TRIAL LAKE 9992 5.7 9.3 61 7.8 10.2 76 ----- ----- Basin wide percent of average 59 73 ----------------------------------------------------------------------------- -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 1961-90. 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.