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 MONDAY: DECEMBER 24 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.2 7.0 89 12.5 9.2 136 COTTONWOOD CREEK 7670 6.0 8.3 72 9.3 11.8 79 GRAND TARGHEE 9260 19.0 -M * 15.2 -M * GRANITE CREEK 6770 4.1 6.4 64 9.8 8.3 118 GRASSY LAKE 7265 10.2 12.6 81 17.9 15.0 119 GROS VENTRE SUMMIT 8750 5.9 6.0 98 7.3 5.8 126 GUNSIGHT PASS 9820 3.7 -M * 7.0 -M * LEWIS LAKE DIVIDE 7850 11.9 12.6 94 18.0 15.3 118 PHILLIPS BENCH 8200 8.4 10.9 77 12.9 11.7 110 SALT RIVER SUMMIT 7760 2.4 4.6 52 4.9 7.8 63 SNAKE RIVER STATION 6920 5.0 6.8 74 12.8 9.7 132 SPRING CREEK DIVIDE 9000 6.1 11.0 55 7.5 11.3 66 THUMB DIVIDE 7980 5.5 6.6 83 9.3 8.0 116 TOGWOTEE PASS 9580 11.8 10.3 115 13.4 10.6 126 TWO OCEAN PLATEAU 9240 16.8 12.0 140 15.7 12.0 131 WILLOW CREEK 8380 7.8 12.4 63 13.6 13.7 99 ----- ----- Basin wide percent of average 85 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.0 10.1 119 11.6 8.9 130 BLACK BEAR 8170 17.6 15.1 117 19.4 15.5 125 CANYON 7870 6.3 5.2 121 9.5 6.9 138 FISHER CREEK 9100 19.2 14.4 133 17.9 15.0 119 MADISON PLATEAU 7750 10.5 9.8 107 14.5 11.0 132 NORTHEAST ENTRANCE 7350 2.3 4.3 53 6.5 5.8 112 PARKER PEAK 9400 11.7 9.3 126 11.4 7.5 152 SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127 THUMB DIVIDE 7980 5.5 6.6 83 9.3 8.0 116 TWO OCEAN PLATEAU 9240 16.8 12.0 140 15.7 12.0 131 WHISKEY CREEK 6800 6.2 6.5 95 11.7 8.8 133 WHITE MILL 8700 11.9 10.0 119 11.9 11.4 104 WOLVERINE 7650 3.5 4.9 71 7.3 6.4 114 ----- ----- Basin wide percent of average 112 125 WIND RIVER BURROUGHS CREEK 8750 7.5 5.9 127 10.2 7.1 144 COLD SPRINGS 9630 1.8 4.2 43 4.5 5.3 85 DEER PARK 9700 4.4 6.0 73 7.7 9.8 79 HOBBS PARK 10100 4.1 7.1 58 5.8 5.9 98 LITTLE WARM 9370 3.9 4.7 83 6.4 6.1 105 SOUTH PASS 9040 3.7 7.4 50 6.7 8.4 80 ST. LAWRENCE ALT 8620 1.9 3.5 54 3.6 4.3 84 TOGWOTEE PASS 9580 11.8 10.3 115 13.4 10.6 126 TOWNSEND CREEK 8700 2.3 4.0 57 5.3 5.6 95 ----- ----- Basin wide percent of average 78 101 BIGHORN BASIN BALD MTN. 9380 5.6 8.7 64 6.6 7.5 88 BEAR TRAP MEADOW 8200 2.9 2.3 126 4.2 4.2 100 BLACKWATER 9780 11.5 10.9 106 11.1 9.9 112 BONE SPRINGS DIV 9350 5.3 7.1 75 5.8 6.6 88 EVENING STAR 9200 13.0 12.2 107 14.3 11.6 123 GRAVE SPRINGS 8550 3.0 3.7 81 4.7 4.5 104 KIRWIN 9550 6.5 5.4 120 7.5 5.4 139 MARQUETTE 8760 1.3 4.6 28 5.5 5.0 110 MIDDLE POWDER 7760 3.4 5.1 67 4.4 6.3 70 OWL CREEK 8975 2.4 2.4 100 4.1 2.7 152 POWDER RIVER PASS 9480 3.9 4.7 83 5.8 5.4 107 SHELL CREEK 9580 6.9 6.7 103 7.4 6.0 123 SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127 SYLVAN ROAD 7120 4.0 5.4 74 11.7 9.3 126 TIMBER CREEK 7950 1.5 2.9 52 5.1 3.5 146 YOUNTS PEAK 8350 7.3 6.9 106 9.9 7.3 136 ----- ----- Basin wide percent of average 88 115 SHOSHONE RIVER BLACKWATER 9780 11.5 10.9 106 11.1 9.9 112 EVENING STAR 9200 13.0 12.2 107 14.3 11.6 123 KIRWIN 9550 6.5 5.4 120 7.5 5.4 139 MARQUETTE 8760 1.3 4.6 28 5.5 5.0 110 SYLVAN LAKE 8420 8.3 9.4 88 12.7 10.0 127 SYLVAN ROAD 7120 4.0 5.4 74 11.7 9.3 126 YOUNTS PEAK 8350 7.3 6.9 106 9.9 7.3 136 ----- ----- Basin wide percent of average 95 124 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.9 2.3 126 4.2 4.2 100 BIG GOOSE 7990 3.2 3.8 84 6.3 4.2 150 BONE SPRINGS DIV 9350 5.3 7.1 75 5.8 6.6 88 BURGESS JUNCTION 7880 3.6 5.0 72 6.0 5.6 107 CLOUD PEAK RESERVOIR 9860 5.6 5.1 110 7.3 6.0 122 DOME LAKE 8880 4.0 5.5 73 7.3 6.3 116 GRAVE SPRINGS 8550 3.0 3.7 81 4.7 4.5 104 HANSEN SAWMILL 8360 2.7 2.8 96 4.9 4.0 123 MIDDLE POWDER 7760 3.4 5.1 67 4.4 6.3 70 POWDER RIVER PASS 9480 3.9 4.7 83 5.8 5.4 107 SUCKER CREEK 8880 4.1 4.7 87 6.0 6.1 98 TIE CREEK 6870 1.2 2.2 55 5.0 4.7 106 ----- ----- Basin wide percent of average 82 106 BELLE FOURCHE BLIND PARK 6890 1.6 2.9 55 3.7 5.7 65 COLE CANYON 5910 1.2 2.9 41 2.8 3.6 78 NORTH RAPID CREEK 6130 2.4 2.8 86 2.9 4.9 59 ----- ----- Basin wide percent of average 60 66 UPPER N. PLATTE RIVER COLUMBINE 9160 5.7 8.4 68 9.3 10.0 93 DIVIDE PEAK 8880 8.7 8.0 109 9.4 8.9 106 ELK RIVER 8700 6.3 5.9 107 9.1 7.7 118 JOE WRIGHT 10120 8.7 8.6 101 10.9 10.7 102 NORTH FRENCH CREEK 10130 11.0 11.8 93 12.2 10.7 114 OLD BATTLE 10000 11.3 13.1 86 14.3 14.0 102 SAGE CREEK BASIN 7850 6.1 4.6 133 7.6 5.2 146 SOUTH BRUSH CREEK 8440 5.1 4.5 113 8.4 7.0 120 TOWER 10500 11.2 18.3 61 14.3 15.7 91 WEBBER SPRINGS 9250 8.4 10.2 82 11.2 11.5 97 WILLOW CREEK PASS 9540 6.4 5.0 128 7.6 5.9 129 ----- ----- Basin wide percent of average 90 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.4 9.3 80 8.8 9.0 98 CASPER MTN. 7900 3.3 6.3 52 6.4 6.7 96 DEADMAN HILL 10220 6.9 6.8 101 7.1 7.1 100 DEER PARK 9700 4.4 6.0 73 7.7 9.8 79 LAPRELE CREEK 8375 1.2 4.7 26 4.1 5.6 73 RENO HILL 8400 4.3 6.0 72 6.1 6.6 92 ROACH 9700 7.5 6.4 117 9.5 7.5 127 SAND LAKE 10050 10.5 13.4 78 11.1 10.3 108 SOUTH PASS 9040 3.7 7.4 50 6.7 8.4 80 WINDY PEAK 7900 2.1 3.2 66 3.9 5.0 78 ----- ----- Basin wide percent of average 74 94 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.5 3.2 141 7.3 6.3 116 DIVIDE PEAK 8880 8.7 8.0 109 9.4 8.9 106 OLD BATTLE 10000 11.3 13.1 86 14.3 14.0 102 SANDSTONE RS 8150 5.5 4.3 128 8.7 7.8 112 WHISKEY PARK 8950 8.6 9.4 91 12.6 11.6 109 ----- ----- Basin wide percent of average 102 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.9 6.1 64 4.8 5.9 81 BLIND BULL SUM 8650 7.3 11.5 63 7.4 9.8 76 EAST RIM DIVIDE 7930 1.8 5.2 35 4.0 5.1 78 ELKHART PARK G.S. 9400 3.6 5.5 65 5.1 6.0 85 GROS VENTRE SUMMIT 8750 5.9 6.0 98 7.3 5.8 126 GUNSIGHT PASS 9820 3.7 -M * 7.0 -M * KENDALL R.S. 7740 3.1 5.7 54 5.5 6.0 92 LOOMIS PARK 8240 4.4 7.0 63 6.2 7.3 85 NEW FORK LAKE 8340 2.6 4.7 55 3.9 5.3 74 SNIDER BASIN 8060 2.6 6.0 43 4.5 6.9 65 SPRING CREEK DIVIDE 9000 6.1 11.0 55 7.5 11.3 66 TRIPLE PEAK 8500 6.9 10.3 67 9.8 9.8 100 ----- ----- Basin wide percent of average 61 83 LOWER GREEN RIVER HAMS FORK 7840 1.8 4.6 39 3.5 5.1 69 HEWINTA 9519 1.7 3.5 49 6.6 6.5 102 HICKERSON PARK 9145 1.4 2.5 56 4.2 3.9 108 HOLE-IN-ROCK 9150 1.2 2.3 52 4.4 3.6 122 INDIAN CREEK 9425 6.1 10.9 56 6.6 10.6 62 KELLEY R.S. 8180 3.6 6.7 54 6.2 8.8 70 STEEL CREEK PARK 10200 3.0 5.9 51 7.3 6.9 106 ----- ----- Basin wide percent of average 52 85 UPPER BEAR RIVER BUG LAKE 7950 2.8 6.9 41 5.0 8.2 61 HAYDEN FORK 9212 3.8 5.3 72 7.4 8.9 83 KELLEY R.S. 8180 3.6 6.7 54 6.2 8.8 70 LILY LAKE 9156 2.4 4.7 51 6.7 7.8 86 MONTE CRISTO 8960 5.9 9.2 64 7.8 10.7 73 SALT RIVER SUMMIT 7760 2.4 4.6 52 4.9 7.8 63 TRIAL LAKE 9992 5.6 9.0 62 7.6 9.9 77 ----- ----- Basin wide percent of average 57 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.