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 3 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 2.7 4.2 64 9.1 6.2 147 COTTONWOOD CREEK 7670 3.3 4.8 69 6.9 8.2 84 GRANITE CREEK 6770 1.5 3.6 42 7.4 5.5 135 GRASSY LAKE 7265 5.5 7.9 70 13.0 9.9 131 GROS VENTRE SUMMIT 8750 4.4 4.0 110 6.0 4.3 140 LEWIS LAKE DIVIDE 7850 7.0 7.9 89 12.6 10.1 125 PHILLIPS BENCH 8200 5.2 6.6 79 9.7 7.6 128 SALT RIVER SUMMIT 7760 .4 2.7 15 3.1 5.1 61 SNAKE RIVER STATION 6920 1.7 4.2 40 9.3 6.6 141 SPRING CREEK DIVIDE 9000 3.6 7.0 51 5.1 7.5 68 THUMB DIVIDE 7980 3.0 4.1 73 7.2 5.5 131 TOGWOTEE PASS 9580 8.3 7.2 115 9.7 7.4 131 TWO OCEAN PLATEAU 9240 11.4 8.5 134 11.3 8.4 135 WILLOW CREEK 8380 4.2 7.9 53 9.8 9.6 102 ----- ----- Basin wide percent of average 77 118 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 9.0 7.2 125 8.7 6.0 145 BLACK BEAR 8170 9.1 9.9 92 12.0 10.7 112 CANYON 7870 3.3 3.4 97 6.7 4.9 137 FISHER CREEK 9100 13.2 9.6 138 12.7 10.1 126 MADISON PLATEAU 7750 5.1 6.4 80 9.1 7.4 123 NORTHEAST ENTRANCE 7350 1.0 2.6 38 5.3 4.1 129 PARKER PEAK 9400 8.1 6.9 117 8.7 5.6 155 SYLVAN LAKE 8420 5.1 6.7 76 9.2 7.2 128 THUMB DIVIDE 7980 3.0 4.1 73 7.2 5.5 131 TWO OCEAN PLATEAU 9240 11.4 8.5 134 11.3 8.4 135 WHISKEY CREEK 6800 2.5 4.0 62 7.5 6.0 125 WHITE MILL 8700 8.5 6.8 125 8.9 7.9 113 WOLVERINE 7650 1.5 3.0 50 5.7 4.6 124 ----- ----- Basin wide percent of average 102 128 WIND RIVER BURROUGHS CREEK 8750 5.4 3.9 138 8.1 5.0 162 COLD SPRINGS 9630 .7 3.2 22 3.5 4.3 81 DEER PARK 9700 -M 4.6 * 5.3 7.2 74 HOBBS PARK 10100 2.5 5.3 47 4.5 4.7 96 LITTLE WARM 9370 2.6 3.5 74 5.0 4.7 106 SOUTH PASS 9040 1.5 5.0 30 4.3 6.1 70 ST. LAWRENCE ALT 8620 .8 2.7 30 2.5 3.5 71 TOGWOTEE PASS 9580 8.3 7.2 115 9.7 7.4 131 TOWNSEND CREEK 8700 .8 3.0 27 3.5 4.6 76 ----- ----- Basin wide percent of average 67 98 BIGHORN BASIN BALD MTN. 9380 4.1 6.1 67 4.7 5.4 87 BEAR TRAP MEADOW 8200 1.6 1.7 94 3.2 3.4 94 BLACKWATER 9780 9.5 8.0 119 8.7 7.3 119 BONE SPRINGS DIV 9350 4.2 5.4 78 5.2 5.0 104 EVENING STAR 9200 8.8 8.8 100 11.6 8.4 138 GRAVE SPRINGS 8550 1.9 2.7 70 3.8 3.6 106 KIRWIN 9550 5.5 4.2 131 6.6 4.2 157 MARQUETTE 8760 .2 3.8 5 4.3 4.1 105 MIDDLE POWDER 7760 2.3 3.6 64 3.6 5.0 72 OWL CREEK 8975 1.6 1.9 84 3.5 2.2 159 POWDER RIVER PASS 9480 2.8 3.4 82 4.8 4.2 114 SHELL CREEK 9580 5.8 5.2 112 6.4 4.6 139 SYLVAN LAKE 8420 5.1 6.7 76 9.2 7.2 128 SYLVAN ROAD 7120 1.7 3.7 46 9.0 6.7 134 TIMBER CREEK 7950 .6 2.4 25 4.3 3.0 143 YOUNTS PEAK 8350 5.1 4.8 106 8.1 5.3 153 ----- ----- Basin wide percent of average 84 122 SHOSHONE RIVER BLACKWATER 9780 9.5 8.0 119 8.7 7.3 119 EVENING STAR 9200 8.8 8.8 100 11.6 8.4 138 KIRWIN 9550 5.5 4.2 131 6.6 4.2 157 MARQUETTE 8760 .2 3.8 5 4.3 4.1 105 SYLVAN LAKE 8420 5.1 6.7 76 9.2 7.2 128 SYLVAN ROAD 7120 1.7 3.7 46 9.0 6.7 134 YOUNTS PEAK 8350 5.1 4.8 106 8.1 5.3 153 ----- ----- Basin wide percent of average 90 133 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.6 1.7 94 3.2 3.4 94 BIG GOOSE 7990 2.5 2.4 104 5.6 3.1 181 BONE SPRINGS DIV 9350 4.2 5.4 78 5.2 5.0 104 BURGESS JUNCTION 7880 2.5 3.5 71 4.9 4.3 114 CLOUD PEAK RESERVOIR 9860 4.4 3.9 113 6.6 4.9 135 DOME LAKE 8880 3.0 4.2 71 6.3 5.0 126 GRAVE SPRINGS 8550 1.9 2.7 70 3.8 3.6 106 HANSEN SAWMILL 8360 2.1 2.1 100 4.2 3.2 131 MIDDLE POWDER 7760 2.3 3.6 64 3.6 5.0 72 POWDER RIVER PASS 9480 2.8 3.4 82 4.8 4.2 114 SUCKER CREEK 8880 2.9 3.3 88 5.1 4.6 111 TIE CREEK 6870 .5 1.2 42 4.1 3.7 111 ----- ----- Basin wide percent of average 82 115 BELLE FOURCHE BLIND PARK 6890 .7 2.0 35 2.6 4.6 57 COLE CANYON 5910 .4 2.2 18 2.2 3.0 73 NORTH RAPID CREEK 6130 1.8 1.8 100 2.0 3.8 53 ----- ----- Basin wide percent of average 48 60 UPPER N. PLATTE RIVER COLUMBINE 9160 2.2 5.1 43 5.9 6.5 91 DIVIDE PEAK 8880 5.1 5.2 98 6.0 6.3 95 ELK RIVER 8700 3.0 3.2 94 5.7 5.3 108 JOE WRIGHT 10120 6.5 6.4 102 8.2 7.9 104 NORTH FRENCH CREEK 10130 7.7 8.0 96 8.9 7.6 117 OLD BATTLE 10000 6.7 9.3 72 8.9 9.5 94 SAGE CREEK BASIN 7850 1.6 3.0 53 4.6 3.7 124 SOUTH BRUSH CREEK 8440 3.4 2.9 117 6.3 5.3 119 TOWER 10500 7.0 12.9 54 9.7 10.9 89 WEBBER SPRINGS 9250 4.7 6.8 69 7.3 7.9 92 WILLOW CREEK PASS 9540 4.0 3.7 108 5.0 4.4 114 ----- ----- Basin wide percent of average 78 102 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.5 6.1 74 6.0 6.4 94 CASPER MTN. 7900 1.1 4.7 23 4.7 5.3 89 DEADMAN HILL 10220 5.2 5.1 102 5.4 5.4 100 DEER PARK 9700 -M 4.6 * 5.3 7.2 74 LAPRELE CREEK 8375 .2 3.3 6 3.0 4.3 70 RENO HILL 8400 2.4 4.3 56 4.8 5.2 92 ROACH 9700 4.4 4.4 100 6.1 5.3 115 SAND LAKE 10050 7.7 9.4 82 8.5 7.3 116 SOUTH PASS 9040 1.5 5.0 30 4.3 6.1 70 WINDY PEAK 7900 .8 2.3 35 2.5 3.8 66 ----- ----- Basin wide percent of average 62 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.3 1.9 68 4.1 4.5 91 DIVIDE PEAK 8880 5.1 5.2 98 6.0 6.3 95 OLD BATTLE 10000 6.7 9.3 72 8.9 9.5 94 SANDSTONE RS 8150 .8 2.4 33 4.8 5.6 86 WHISKEY PARK 8950 4.4 6.3 70 7.7 8.0 96 ----- ----- Basin wide percent of average 73 93 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.2 4.1 54 3.2 4.4 73 BLIND BULL SUM 8650 4.6 7.3 63 5.1 6.6 77 EAST RIM DIVIDE 7930 .3 3.3 9 3.1 3.6 86 ELKHART PARK G.S. 9400 2.2 3.6 61 3.7 4.5 82 GROS VENTRE SUMMIT 8750 4.4 4.0 110 6.0 4.3 140 KENDALL R.S. 7740 1.6 3.3 48 4.2 4.2 100 LOOMIS PARK 8240 2.3 4.5 51 4.2 5.0 84 NEW FORK LAKE 8340 1.5 2.9 52 3.0 3.9 77 SNIDER BASIN 8060 .9 3.7 24 2.8 4.6 61 SPRING CREEK DIVIDE 9000 3.6 7.0 51 5.1 7.5 68 TRIPLE PEAK 8500 4.0 6.5 62 6.9 6.7 103 ----- ----- Basin wide percent of average 55 86 LOWER GREEN RIVER HAMS FORK 7840 .3 2.6 12 2.2 3.6 61 HEWINTA 9519 .6 2.2 27 5.5 5.0 110 HICKERSON PARK 9145 .5 1.5 33 3.2 3.3 97 HOLE-IN-ROCK 9150 .6 1.5 40 3.9 3.0 130 INDIAN CREEK 9425 2.7 6.9 39 3.9 7.1 55 KELLEY R.S. 8180 1.4 4.3 33 4.0 5.8 69 STEEL CREEK PARK 10200 1.7 4.1 41 6.0 5.2 115 ----- ----- Basin wide percent of average 34 87 UPPER BEAR RIVER BUG LAKE 7950 -M 4.2 * 2.4 5.8 41 HAYDEN FORK 9212 2.3 3.2 72 5.1 6.3 81 KELLEY R.S. 8180 1.4 4.3 33 4.0 5.8 69 LILY LAKE 9156 1.1 3.0 37 5.2 5.8 90 MONTE CRISTO 8960 2.5 5.4 46 5.0 7.4 68 SALT RIVER SUMMIT 7760 .4 2.7 15 3.1 5.1 61 TRIAL LAKE 9992 2.8 5.8 48 4.0 6.9 58 ----- ----- Basin wide percent of average 43 67 ----------------------------------------------------------------------------- -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.