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 5 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 3.9 4.5 87 10.2 6.6 155 COTTONWOOD CREEK 7670 3.6 5.1 71 7.2 8.5 85 GRAND TARGHEE 9260 14.6 -M * 12.7 -M * GRANITE CREEK 6770 2.1 3.8 55 7.9 5.8 136 GRASSY LAKE 7265 6.5 8.3 78 14.1 10.4 136 GROS VENTRE SUMMIT 8750 4.9 4.2 117 6.2 4.5 138 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * LEWIS LAKE DIVIDE 7850 8.8 8.4 105 14.2 10.7 133 PHILLIPS BENCH 8200 5.9 7.0 84 10.3 8.0 129 SALT RIVER SUMMIT 7760 .7 2.9 24 3.3 5.3 62 SNAKE RIVER STATION 6920 2.8 4.4 64 10.4 6.9 151 SPRING CREEK DIVIDE 9000 4.0 7.4 54 5.4 7.9 68 THUMB DIVIDE 7980 3.6 4.4 82 7.7 5.8 133 TOGWOTEE PASS 9580 9.7 7.5 129 11.1 7.8 142 TWO OCEAN PLATEAU 9240 13.0 8.8 148 12.5 8.8 142 WILLOW CREEK 8380 4.4 8.3 53 10.1 10.0 101 ----- ----- Basin wide percent of average 87 122 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.3 7.5 137 10.0 6.3 159 BLACK BEAR 8170 11.7 10.5 111 14.1 11.2 126 CANYON 7870 4.5 3.6 125 7.8 5.1 153 FISHER CREEK 9100 15.4 10.1 152 14.9 10.5 142 MADISON PLATEAU 7750 6.9 6.8 101 10.9 7.8 140 NORTHEAST ENTRANCE 7350 1.8 2.8 64 5.9 4.3 137 PARKER PEAK 9400 9.4 7.1 132 9.8 5.8 169 SYLVAN LAKE 8420 6.2 6.9 90 10.4 7.6 137 THUMB DIVIDE 7980 3.6 4.4 82 7.7 5.8 133 TWO OCEAN PLATEAU 9240 13.0 8.8 148 12.5 8.8 142 WHISKEY CREEK 6800 3.9 4.3 91 9.1 6.3 144 WHITE MILL 8700 10.2 7.1 144 11.1 8.3 134 WOLVERINE 7650 2.5 3.3 76 6.4 4.8 133 ----- ----- Basin wide percent of average 119 141 WIND RIVER BURROUGHS CREEK 8750 6.2 4.2 148 8.9 5.2 171 COLD SPRINGS 9630 .9 3.3 27 3.7 4.4 84 DEER PARK 9700 2.0 4.7 43 5.3 7.5 71 HOBBS PARK 10100 2.5 5.5 45 4.8 4.8 100 LITTLE WARM 9370 2.9 3.6 81 5.4 4.8 113 SOUTH PASS 9040 1.5 5.2 29 4.3 6.4 67 ST. LAWRENCE ALT 8620 .9 2.8 32 2.5 3.6 69 TOGWOTEE PASS 9580 9.7 7.5 129 11.1 7.8 142 TOWNSEND CREEK 8700 .8 3.1 26 3.5 4.7 74 ----- ----- Basin wide percent of average 69 101 BIGHORN BASIN BALD MTN. 9380 4.2 6.3 67 5.4 5.6 96 BEAR TRAP MEADOW 8200 1.7 1.8 94 3.4 3.5 97 BLACKWATER 9780 10.3 8.4 123 9.8 7.6 129 BONE SPRINGS DIV 9350 4.3 5.6 77 5.4 5.1 106 EVENING STAR 9200 10.7 9.2 116 13.4 8.7 154 GRAVE SPRINGS 8550 2.0 2.7 74 3.8 3.7 103 KIRWIN 9550 5.7 4.4 130 7.0 4.3 163 MARQUETTE 8760 .2 3.9 5 4.6 4.2 110 MIDDLE POWDER 7760 2.4 3.8 63 3.5 5.1 69 OWL CREEK 8975 1.7 2.0 85 3.5 2.3 152 POWDER RIVER PASS 9480 2.8 3.6 78 4.9 4.3 114 SHELL CREEK 9580 5.9 5.3 111 6.5 4.7 138 SYLVAN LAKE 8420 6.2 6.9 90 10.4 7.6 137 SYLVAN ROAD 7120 2.6 3.9 67 9.8 7.0 140 TIMBER CREEK 7950 .6 2.4 25 4.4 3.1 142 YOUNTS PEAK 8350 5.9 5.2 113 8.9 5.5 162 ----- ----- Basin wide percent of average 89 127 SHOSHONE RIVER BLACKWATER 9780 10.3 8.4 123 9.8 7.6 129 EVENING STAR 9200 10.7 9.2 116 13.4 8.7 154 KIRWIN 9550 5.7 4.4 130 7.0 4.3 163 MARQUETTE 8760 .2 3.9 5 4.6 4.2 110 SYLVAN LAKE 8420 6.2 6.9 90 10.4 7.6 137 SYLVAN ROAD 7120 2.6 3.9 67 9.8 7.0 140 YOUNTS PEAK 8350 5.9 5.2 113 8.9 5.5 162 ----- ----- Basin wide percent of average 99 142 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 1.8 94 3.4 3.5 97 BIG GOOSE 7990 2.6 2.5 104 5.7 3.2 178 BONE SPRINGS DIV 9350 4.3 5.6 77 5.4 5.1 106 BURGESS JUNCTION 7880 2.7 3.7 73 5.1 4.4 116 CLOUD PEAK RESERVOIR 9860 4.5 4.0 112 6.9 5.1 135 DOME LAKE 8880 3.2 4.4 73 6.5 5.1 127 GRAVE SPRINGS 8550 2.0 2.7 74 3.8 3.7 103 HANSEN SAWMILL 8360 2.1 2.2 95 4.6 3.3 139 MIDDLE POWDER 7760 2.4 3.8 63 3.5 5.1 69 POWDER RIVER PASS 9480 2.8 3.6 78 4.9 4.3 114 SUCKER CREEK 8880 3.0 3.4 88 5.6 4.7 119 TIE CREEK 6870 .0 1.2 0 4.1 3.8 108 ----- ----- Basin wide percent of average 80 116 BELLE FOURCHE BLIND PARK 6890 .8 2.1 38 2.7 4.6 59 COLE CANYON 5910 .4 2.2 18 2.3 3.1 74 NORTH RAPID CREEK 6130 1.2 1.8 67 2.2 3.9 56 ----- ----- Basin wide percent of average 39 62 UPPER N. PLATTE RIVER COLUMBINE 9160 2.5 5.4 46 6.3 6.9 91 DIVIDE PEAK 8880 5.0 5.4 93 6.1 6.6 92 ELK RIVER 8700 3.0 3.4 88 6.0 5.6 107 JOE WRIGHT 10120 6.4 6.6 97 8.3 8.2 101 NORTH FRENCH CREEK 10130 8.0 8.4 95 9.3 7.9 118 OLD BATTLE 10000 6.8 9.7 70 9.2 10.0 92 SAGE CREEK BASIN 7850 1.6 3.1 52 4.6 3.8 121 SOUTH BRUSH CREEK 8440 3.5 3.1 113 6.5 5.5 118 TOWER 10500 7.1 13.5 53 10.0 11.3 88 WEBBER SPRINGS 9250 4.8 7.1 68 7.5 8.3 90 WILLOW CREEK PASS 9540 4.0 3.8 105 5.1 4.6 111 ----- ----- Basin wide percent of average 76 100 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.8 6.4 75 6.1 6.6 92 CASPER MTN. 7900 1.5 4.9 31 4.9 5.5 89 DEADMAN HILL 10220 5.4 5.3 102 5.4 5.5 98 DEER PARK 9700 2.0 4.7 43 5.3 7.5 71 LAPRELE CREEK 8375 .3 3.4 9 3.1 4.5 69 RENO HILL 8400 2.6 4.5 58 4.9 5.3 92 ROACH 9700 4.4 4.6 96 6.3 5.5 115 SAND LAKE 10050 7.9 9.8 81 8.7 7.6 114 SOUTH PASS 9040 1.5 5.2 29 4.3 6.4 67 WINDY PEAK 7900 .8 2.4 33 2.7 3.9 69 ----- ----- Basin wide percent of average 61 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.4 2.0 70 4.2 4.6 91 DIVIDE PEAK 8880 5.0 5.4 93 6.1 6.6 92 OLD BATTLE 10000 6.8 9.7 70 9.2 10.0 92 SANDSTONE RS 8150 1.2 2.6 46 4.9 5.8 84 WHISKEY PARK 8950 4.5 6.6 68 7.8 8.4 93 ----- ----- Basin wide percent of average 72 91 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 4.3 60 3.5 4.5 78 BLIND BULL SUM 8650 5.0 7.7 65 5.4 6.9 78 EAST RIM DIVIDE 7930 .8 3.5 23 3.5 3.7 95 ELKHART PARK G.S. 9400 2.5 3.8 66 4.3 4.6 93 GROS VENTRE SUMMIT 8750 4.9 4.2 117 6.2 4.5 138 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * KENDALL R.S. 7740 2.0 3.5 57 4.6 4.3 107 LOOMIS PARK 8240 2.9 4.8 60 4.7 5.3 89 NEW FORK LAKE 8340 1.8 3.0 60 3.6 4.0 90 SNIDER BASIN 8060 1.1 4.0 28 3.0 4.8 62 SPRING CREEK DIVIDE 9000 4.0 7.4 54 5.4 7.9 68 TRIPLE PEAK 8500 4.4 6.9 64 7.4 7.0 106 ----- ----- Basin wide percent of average 60 90 LOWER GREEN RIVER HAMS FORK 7840 .4 2.8 14 2.3 3.8 61 HEWINTA 9519 .7 2.3 30 5.5 5.2 106 HICKERSON PARK 9145 .7 1.6 44 3.5 3.3 106 HOLE-IN-ROCK 9150 .7 1.6 44 4.0 3.1 129 INDIAN CREEK 9425 3.1 7.2 43 4.1 7.5 55 KELLEY R.S. 8180 1.7 4.6 37 4.2 6.1 69 STEEL CREEK PARK 10200 1.8 4.2 43 6.0 5.4 111 ----- ----- Basin wide percent of average 37 86 UPPER BEAR RIVER BUG LAKE 7950 -M 4.4 * 2.8 6.1 46 HAYDEN FORK 9212 2.2 3.3 67 5.1 6.5 78 KELLEY R.S. 8180 1.7 4.6 37 4.2 6.1 69 LILY LAKE 9156 1.1 3.1 35 5.3 6.0 88 MONTE CRISTO 8960 2.6 5.7 46 5.2 7.8 67 SALT RIVER SUMMIT 7760 .7 2.9 24 3.3 5.3 62 TRIAL LAKE 9992 3.1 6.1 51 4.3 7.2 60 ----- ----- Basin wide percent of average 44 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.