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 15 , 2004 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.6 5.9 95 7.1 8.0 89 COTTONWOOD CREEK 7600 5.3 6.9 77 7.8 10.5 74 GRANITE CREEK 6770 4.3 5.3 81 7.0 7.3 96 GRASSY LAKE 7265 9.8 10.8 91 11.3 13.1 86 GROS VENTRE SUMMIT 8750 4.6 5.3 87 4.5 5.2 87 LEWIS LAKE DIVIDE 7850 9.6 10.9 88 10.8 13.3 81 PHILLIPS BENCH 8200 8.4 9.3 90 9.1 10.2 89 SALT RIVER SUMMIT 7600 3.8 3.9 97 6.5 6.8 96 SNAKE RIVER STATION 6920 4.6 5.8 79 6.7 8.5 79 SPRING CREEK DIVIDE 9000 8.9 9.6 93 9.3 9.9 94 THUMB DIVIDE 7980 5.5 5.6 98 5.7 7.1 80 TOGWOTEE PASS 9580 7.3 9.1 80 7.5 9.4 80 TWO OCEAN PLATEAU 9240 10.5 10.7 98 8.5 10.6 80 WILLOW CREEK 8450 8.7 10.7 81 11.1 12.2 91 ----- ----- Basin wide percent of average 88 85 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 6.5 9.1 71 5.6 7.8 72 BLACK BEAR 8170 13.6 13.3 102 13.8 13.7 101 CANYON 8090 3.0 4.5 67 4.4 6.2 71 FISHER CREEK 9100 9.3 12.7 73 9.9 13.1 76 MADISON PLATEAU 7750 7.3 8.6 85 8.8 9.5 93 NORTHEAST ENTRANCE 7350 1.6 3.7 43 3.0 5.1 59 PARKER PEAK 9400 6.7 8.5 79 5.5 6.7 82 SYLVAN LAKE 8420 6.2 8.3 75 7.5 8.9 84 THUMB DIVIDE 7980 5.5 5.6 98 5.7 7.1 80 TWO OCEAN PLATEAU 9240 10.5 10.7 98 8.5 10.6 80 WHISKEY CREEK 6800 4.4 5.6 79 6.9 7.7 90 WHITE MILL 8700 6.3 8.9 71 6.4 10.0 64 WOLVERINE 7650 3.0 4.2 71 3.4 5.6 61 ----- ----- Basin wide percent of average 81 80 WIND RIVER BURROUGHS CREEK 8750 4.1 5.2 79 4.4 6.3 70 COLD SPRINGS 9630 3.6 3.9 92 3.9 4.9 80 DEER PARK 9700 10.9 5.6 195 12.3 8.8 140 HOBBS PARK 10100 6.4 6.6 97 5.9 5.4 109 LITTLE WARM 9370 3.1 4.3 72 3.6 5.5 65 SOUTH PASS 9040 8.9 6.8 131 9.9 7.4 134 ST. LAWRENCE ALT 8620 3.2 3.3 97 4.1 4.0 102 TOGWOTEE PASS 9580 7.3 9.1 80 7.5 9.4 80 TOWNSEND CREEK 8700 3.9 3.7 105 6.7 5.2 129 ----- ----- Basin wide percent of average 106 102 BIGHORN BASIN BALD MTN. 9380 6.2 7.7 81 6.2 6.7 93 BEAR TRAP MEADOW 8200 1.5 2.1 71 3.8 3.9 97 BLACKWATER 9780 6.7 9.9 68 6.2 8.8 70 BONE SPRINGS DIV 9350 6.0 6.4 94 5.9 6.0 98 EVENING STAR 9200 7.6 11.1 68 9.4 10.4 90 GRAVE SPRINGS 8550 1.9 3.1 61 3.7 4.2 88 KIRWIN 9550 2.7 5.1 53 3.2 4.9 65 MARQUETTE 8760 1.8 4.3 42 3.4 4.6 74 MIDDLE POWDER 7760 2.7 4.6 59 4.0 5.8 69 OWL CREEK 8975 1.5 2.3 65 1.8 2.5 72 POWDER RIVER PASS 9480 4.6 4.2 110 5.5 5.0 110 SHELL CREEK 9580 5.5 6.0 92 5.1 5.5 93 SYLVAN LAKE 8420 6.2 8.3 75 7.5 8.9 84 SYLVAN ROAD 7120 3.5 4.9 71 5.7 8.2 70 TIMBER CREEK 7950 .8 2.6 31 1.4 3.3 42 YOUNTS PEAK 8350 4.4 6.2 71 4.7 6.6 71 ----- ----- Basin wide percent of average 72 81 SHOSHONE RIVER BLACKWATER 9780 6.7 9.9 68 6.2 8.8 70 EVENING STAR 9200 7.6 11.1 68 9.4 10.4 90 KIRWIN 9550 2.7 5.1 53 3.2 4.9 65 MARQUETTE 8760 1.8 4.3 42 3.4 4.6 74 SYLVAN LAKE 8420 6.2 8.3 75 7.5 8.9 84 SYLVAN ROAD 7120 3.5 4.9 71 5.7 8.2 70 YOUNTS PEAK 8350 4.4 6.2 71 4.7 6.6 71 ----- ----- Basin wide percent of average 66 77 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.5 2.1 71 3.8 3.9 97 BIG GOOSE 7990 2.7 3.3 82 4.0 3.7 108 BONE SPRINGS DIV 9350 6.0 6.4 94 5.9 6.0 98 BURGESS JUNCTION 7880 2.8 4.4 64 4.1 5.1 80 CLOUD PEAK RESERVOIR 9860 5.0 4.6 109 4.5 5.6 80 DOME LAKE 8880 4.2 5.0 84 5.0 5.8 86 GRAVE SPRINGS 8550 1.9 3.1 61 3.7 4.2 88 HANSEN SAWMILL 8360 1.7 2.6 65 2.7 3.7 73 MIDDLE POWDER 7760 2.7 4.6 59 4.0 5.8 69 POWDER RIVER PASS 9480 4.6 4.2 110 5.5 5.0 110 SUCKER CREEK 8880 4.3 4.1 105 5.3 5.5 96 TIE CREEK 6870 .3 1.5 20 3.5 4.3 81 ----- ----- Basin wide percent of average 82 89 BELLE FOURCHE BLIND PARK 6890 1.6 2.5 64 3.7 5.3 70 COLE CANYON 5910 .4 2.4 17 3.2 -M * NORTH RAPID CREEK 6130 1.4 2.4 58 2.9 4.5 64 ----- ----- Basin wide percent of average 47 67 UPPER N. PLATTE RIVER COLUMBINE 9160 8.0 7.1 113 9.8 8.7 113 DIVIDE PEAK 8860 8.5 6.9 123 11.1 7.9 141 ELK RIVER 8700 5.7 4.8 119 8.1 6.9 117 JOE WRIGHT 10120 9.0 7.7 117 9.0 9.6 94 NORTH FRENCH CREEK 10130 9.0 10.3 87 9.0 9.5 95 OLD BATTLE 9920 13.9 11.8 118 16.1 12.3 131 SAGE CREEK BASIN 7850 5.7 4.0 142 8.5 4.6 185 SOUTH BRUSH CREEK 8440 2.7 3.9 69 4.6 6.4 72 TOWER 10500 16.8 16.3 103 16.0 13.9 115 WEBBER SPRINGS 9250 9.0 8.9 101 11.3 10.1 112 WILLOW CREEK PASS 9540 5.3 4.5 118 5.7 5.3 108 ----- ----- Basin wide percent of average 109 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 6.1 8.1 75 6.6 8.0 82 CASPER MTN. 7850 4.1 5.7 72 5.3 6.1 87 DEADMAN HILL 10220 7.2 6.2 116 4.9 6.5 75 DEER PARK 9700 10.9 5.6 195 12.3 8.8 140 LAPRELE CREEK 8375 2.2 4.2 52 4.5 5.2 87 RENO HILL 8500 2.9 5.4 54 3.8 6.0 63 ROACH 9700 4.1 5.6 73 6.1 6.7 91 SAND LAKE 10050 8.7 11.9 73 7.4 9.2 80 SOUTH PASS 9040 8.9 6.8 131 9.9 7.4 134 WINDY PEAK 7900 2.0 2.9 69 3.7 4.5 82 ----- ----- Basin wide percent of average 92 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.5 2.6 135 6.8 5.6 121 DIVIDE PEAK 8860 8.5 6.9 123 11.1 7.9 141 OLD BATTLE 9920 13.9 11.8 118 16.1 12.3 131 SANDSTONE RS 8150 3.5 3.5 100 8.5 7.0 121 WHISKEY PARK 8950 9.8 8.2 120 11.8 10.2 116 ----- ----- Basin wide percent of average 119 126 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.6 5.4 141 7.6 5.3 143 BLIND BULL SUM 8900 6.1 9.9 62 6.8 8.5 80 EAST RIM DIVIDE 7930 2.6 4.5 58 3.9 4.5 87 ELKHART PARK G.S. 9400 5.2 4.8 108 6.2 5.4 115 GROS VENTRE SUMMIT 8750 4.6 5.3 87 4.5 5.2 87 KENDALL R.S. 7740 4.4 4.8 92 5.4 5.4 100 LOOMIS PARK 8240 4.8 6.1 79 5.9 6.4 92 NEW FORK LAKE 8340 3.9 4.0 98 4.1 4.7 87 SNIDER BASIN 8060 5.0 5.2 96 6.0 6.0 100 SPRING CREEK DIVIDE 9000 8.9 9.6 93 9.3 9.9 94 TRIPLE PEAK 8500 6.5 8.9 73 8.1 8.6 94 ----- ----- Basin wide percent of average 87 97 LOWER GREEN RIVER HAMS FORK 7840 4.5 3.8 118 5.8 4.5 129 HEWINTA 9500 2.7 2.9 93 5.3 5.8 91 HICKERSON PARK 9100 4.1 2.1 195 5.9 3.7 159 HOLE-IN-ROCK 9150 2.8 2.0 140 5.6 3.4 165 INDIAN CREEK 9425 10.3 9.4 110 9.8 9.3 105 KELLEY R.S. 8180 6.7 5.8 116 8.4 7.7 109 STEEL CREEK PARK 10100 5.9 5.2 113 7.1 6.3 113 ----- ----- Basin wide percent of average 119 118 UPPER BEAR RIVER BUG LAKE 7950 6.9 5.8 119 9.5 7.3 130 HAYDEN FORK 9100 6.0 4.4 136 10.2 7.9 129 KELLEY R.S. 8180 6.7 5.8 116 8.4 7.7 109 LILY LAKE 9050 4.5 4.0 112 7.8 7.0 111 MONTE CRISTO 8960 10.4 7.6 137 11.7 9.5 123 SALT RIVER SUMMIT 7600 3.8 3.9 97 6.5 6.8 96 TRIAL LAKE 9960 10.9 7.7 142 13.3 8.7 153 ----- ----- Basin wide percent of average 126 123 ----------------------------------------------------------------------------- -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.