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 10 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.5 5.2 87 10.8 7.3 148 COTTONWOOD CREEK 7670 4.0 6.0 67 7.4 9.4 79 GRAND TARGHEE 9260 15.6 -M * 13.2 -M * GRANITE CREEK 6770 2.4 4.5 53 8.1 6.5 125 GRASSY LAKE 7265 7.2 9.5 76 14.7 11.6 127 GROS VENTRE SUMMIT 8750 4.9 4.7 104 6.4 4.9 131 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * LEWIS LAKE DIVIDE 7850 8.9 9.5 94 14.3 11.9 120 PHILLIPS BENCH 8200 6.2 8.0 78 10.7 9.0 119 SALT RIVER SUMMIT 7760 .8 3.4 24 3.4 6.0 57 SNAKE RIVER STATION 6920 3.1 5.1 61 10.7 7.7 139 SPRING CREEK DIVIDE 9000 4.4 8.4 52 5.8 8.8 66 THUMB DIVIDE 7980 3.5 5.0 70 7.6 6.4 119 TOGWOTEE PASS 9580 10.3 8.2 126 11.7 8.5 138 TWO OCEAN PLATEAU 9240 14.0 9.7 144 13.5 9.7 139 WILLOW CREEK 8380 5.1 9.4 54 10.7 11.0 97 ----- ----- Basin wide percent of average 82 114 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.3 8.3 124 10.1 7.0 144 BLACK BEAR 8170 11.7 11.7 100 14.6 12.4 118 CANYON 7870 4.8 4.0 120 8.0 5.6 143 FISHER CREEK 9100 15.9 11.4 139 14.8 11.7 126 MADISON PLATEAU 7750 7.1 7.6 93 11.1 8.8 126 NORTHEAST ENTRANCE 7350 1.7 3.2 53 6.0 4.7 128 PARKER PEAK 9400 9.5 7.7 123 9.9 6.3 157 SYLVAN LAKE 8420 6.6 7.6 87 10.8 8.3 130 THUMB DIVIDE 7980 3.5 5.0 70 7.6 6.4 119 TWO OCEAN PLATEAU 9240 14.0 9.7 144 13.5 9.7 139 WHISKEY CREEK 6800 4.0 4.8 83 9.4 7.0 134 WHITE MILL 8700 10.5 8.0 131 11.4 9.2 124 WOLVERINE 7650 2.8 3.8 74 6.6 5.2 127 ----- ----- Basin wide percent of average 110 131 WIND RIVER BURROUGHS CREEK 8750 6.7 4.8 140 9.4 5.7 165 COLD SPRINGS 9630 1.0 3.6 28 3.9 4.6 85 DEER PARK 9700 2.5 5.0 50 5.8 8.1 72 HOBBS PARK 10100 2.9 6.1 48 4.6 5.1 90 LITTLE WARM 9370 3.3 4.0 82 5.7 5.2 110 SOUTH PASS 9040 2.0 5.9 34 5.0 6.9 72 ST. LAWRENCE ALT 8620 1.1 3.0 37 2.8 3.8 74 TOGWOTEE PASS 9580 10.3 8.2 126 11.7 8.5 138 TOWNSEND CREEK 8700 1.1 3.4 32 4.2 4.9 86 ----- ----- Basin wide percent of average 70 101 BIGHORN BASIN BALD MTN. 9380 4.8 6.9 70 5.4 6.1 89 BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.7 97 BLACKWATER 9780 10.4 9.2 113 9.9 8.3 119 BONE SPRINGS DIV 9350 4.6 5.9 78 5.5 5.5 100 EVENING STAR 9200 11.2 10.2 110 13.5 9.5 142 GRAVE SPRINGS 8550 2.4 2.9 83 4.2 3.9 108 KIRWIN 9550 5.9 4.7 126 7.1 4.6 154 MARQUETTE 8760 .3 4.1 7 4.5 4.4 102 MIDDLE POWDER 7760 2.6 4.0 65 3.7 5.4 69 OWL CREEK 8975 2.0 2.1 95 3.9 2.4 162 POWDER RIVER PASS 9480 3.3 3.8 87 5.2 4.6 113 SHELL CREEK 9580 6.4 5.6 114 7.0 5.1 137 SYLVAN LAKE 8420 6.6 7.6 87 10.8 8.3 130 SYLVAN ROAD 7120 3.2 4.4 73 10.6 7.8 136 TIMBER CREEK 7950 .5 2.5 20 4.5 3.2 141 YOUNTS PEAK 8350 6.4 5.7 112 9.1 5.9 154 ----- ----- Basin wide percent of average 89 122 SHOSHONE RIVER BLACKWATER 9780 10.4 9.2 113 9.9 8.3 119 EVENING STAR 9200 11.2 10.2 110 13.5 9.5 142 KIRWIN 9550 5.9 4.7 126 7.1 4.6 154 MARQUETTE 8760 .3 4.1 7 4.5 4.4 102 SYLVAN LAKE 8420 6.6 7.6 87 10.8 8.3 130 SYLVAN ROAD 7120 3.2 4.4 73 10.6 7.8 136 YOUNTS PEAK 8350 6.4 5.7 112 9.1 5.9 154 ----- ----- Basin wide percent of average 96 134 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.7 97 BIG GOOSE 7990 2.6 2.9 90 5.6 3.5 160 BONE SPRINGS DIV 9350 4.6 5.9 78 5.5 5.5 100 BURGESS JUNCTION 7880 2.8 3.8 74 4.8 4.7 102 CLOUD PEAK RESERVOIR 9860 4.7 4.2 112 6.4 5.3 121 DOME LAKE 8880 3.2 4.7 68 6.7 5.4 124 GRAVE SPRINGS 8550 2.4 2.9 83 4.2 3.9 108 HANSEN SAWMILL 8360 2.3 2.4 96 4.6 3.5 131 MIDDLE POWDER 7760 2.6 4.0 65 3.7 5.4 69 POWDER RIVER PASS 9480 3.3 3.8 87 5.2 4.6 113 SUCKER CREEK 8880 3.3 3.6 92 5.0 5.1 98 TIE CREEK 6870 .4 1.3 31 4.2 4.1 102 ----- ----- Basin wide percent of average 83 109 BELLE FOURCHE BLIND PARK 6890 1.1 2.2 50 3.0 4.9 61 COLE CANYON 5910 .4 2.4 17 2.3 3.2 72 NORTH RAPID CREEK 6130 1.7 2.1 81 2.3 4.2 55 ----- ----- Basin wide percent of average 48 62 UPPER N. PLATTE RIVER COLUMBINE 9160 4.2 6.2 68 7.8 7.7 101 DIVIDE PEAK 8880 6.3 6.1 103 7.4 7.2 103 ELK RIVER 8700 4.5 4.0 112 7.1 6.1 116 JOE WRIGHT 10120 7.2 7.1 101 9.4 8.8 107 NORTH FRENCH CREEK 10130 9.2 9.3 99 10.4 8.6 121 OLD BATTLE 10000 8.7 10.6 82 11.1 11.1 100 SAGE CREEK BASIN 7850 3.1 3.5 89 5.8 4.2 138 SOUTH BRUSH CREEK 8440 4.0 3.5 114 7.1 5.9 120 TOWER 10500 9.3 14.8 63 12.1 12.5 97 WEBBER SPRINGS 9250 6.3 8.0 79 9.0 9.1 99 WILLOW CREEK PASS 9540 5.7 4.1 139 6.5 4.9 133 ----- ----- Basin wide percent of average 89 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.1 7.2 85 7.5 7.2 104 CASPER MTN. 7900 1.7 5.3 32 5.3 5.8 91 DEADMAN HILL 10220 5.8 5.7 102 6.1 6.0 102 DEER PARK 9700 2.5 5.0 50 5.8 8.1 72 LAPRELE CREEK 8375 .6 3.8 16 3.5 4.8 73 RENO HILL 8400 3.0 4.9 61 5.1 5.7 89 ROACH 9700 5.8 5.1 114 7.6 6.1 125 SAND LAKE 10050 9.0 10.8 83 9.6 8.3 116 SOUTH PASS 9040 2.0 5.9 34 5.0 6.9 72 WINDY PEAK 7900 1.6 2.7 59 3.3 4.2 79 ----- ----- Basin wide percent of average 68 93 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.3 2.3 100 5.4 5.1 106 DIVIDE PEAK 8880 6.3 6.1 103 7.4 7.2 103 OLD BATTLE 10000 8.7 10.6 82 11.1 11.1 100 SANDSTONE RS 8150 2.8 3.0 93 6.4 6.3 102 WHISKEY PARK 8950 6.3 7.3 86 9.7 9.3 104 ----- ----- Basin wide percent of average 90 103 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.5 4.8 52 3.4 4.9 69 BLIND BULL SUM 8650 5.4 8.7 62 5.8 7.7 75 EAST RIM DIVIDE 7930 .9 3.9 23 3.6 4.1 88 ELKHART PARK G.S. 9400 2.6 4.3 60 3.8 5.0 76 GROS VENTRE SUMMIT 8750 4.9 4.7 104 6.4 4.9 131 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * KENDALL R.S. 7740 2.1 4.1 51 4.6 4.7 98 LOOMIS PARK 8240 3.1 5.4 57 5.0 5.8 86 NEW FORK LAKE 8340 2.0 3.5 57 3.3 4.3 77 SNIDER BASIN 8060 1.5 4.5 33 3.4 5.3 64 SPRING CREEK DIVIDE 9000 4.4 8.4 52 5.8 8.8 66 TRIPLE PEAK 8500 5.2 7.8 67 8.0 7.7 104 ----- ----- Basin wide percent of average 58 84 LOWER GREEN RIVER HAMS FORK 7840 .8 3.2 25 2.7 4.1 66 HEWINTA 9519 .7 2.6 27 5.7 5.5 104 HICKERSON PARK 9145 .9 1.8 50 3.4 3.5 97 HOLE-IN-ROCK 9150 .6 1.8 33 4.1 3.2 128 INDIAN CREEK 9425 3.7 8.2 45 4.6 8.3 55 KELLEY R.S. 8180 1.9 5.2 37 4.4 6.8 65 STEEL CREEK PARK 10200 2.5 4.7 53 6.3 5.8 109 ----- ----- Basin wide percent of average 40 84 UPPER BEAR RIVER BUG LAKE 7950 -M 5.0 * 3.2 6.7 48 HAYDEN FORK 9212 2.7 3.8 71 5.7 7.2 79 KELLEY R.S. 8180 1.9 5.2 37 4.4 6.8 65 LILY LAKE 9156 1.5 3.5 43 5.3 6.5 82 MONTE CRISTO 8960 3.8 6.5 58 6.0 8.6 70 SALT RIVER SUMMIT 7760 .8 3.4 24 3.4 6.0 57 TRIAL LAKE 9992 4.3 6.8 63 6.0 7.9 76 ----- ----- Basin wide percent of average 51 68 ----------------------------------------------------------------------------- -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.