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 12 , 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 5.4 83 10.9 7.6 143 COTTONWOOD CREEK 7670 3.9 6.3 62 7.3 9.8 74 GRAND TARGHEE 9260 15.8 -M * 13.3 -M * GRANITE CREEK 6770 2.5 4.7 53 8.1 6.8 119 GRASSY LAKE 7265 7.1 9.9 72 15.1 12.0 126 GROS VENTRE SUMMIT 8750 4.8 4.9 98 6.5 5.0 130 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * LEWIS LAKE DIVIDE 7850 8.8 10.0 88 14.4 12.4 116 PHILLIPS BENCH 8200 6.2 8.5 73 10.7 9.4 114 SALT RIVER SUMMIT 7760 -M 3.5 * 3.4 6.2 55 SNAKE RIVER STATION 6920 3.0 5.4 56 10.7 8.0 134 SPRING CREEK DIVIDE 9000 4.3 8.8 49 5.7 9.2 62 THUMB DIVIDE 7980 3.4 5.2 65 7.5 6.6 114 TOGWOTEE PASS 9580 10.3 8.5 121 11.8 8.9 133 TWO OCEAN PLATEAU 9240 14.0 10.0 140 13.4 10.0 134 WILLOW CREEK 8380 5.3 9.9 54 10.8 11.4 95 ----- ----- Basin wide percent of average 80 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.3 8.5 121 10.1 7.3 138 BLACK BEAR 8170 11.9 12.3 97 14.7 12.8 115 CANYON 7870 5.0 4.2 119 8.1 5.8 140 FISHER CREEK 9100 15.9 11.9 134 15.4 12.2 126 MADISON PLATEAU 7750 7.2 7.9 91 11.2 9.1 123 NORTHEAST ENTRANCE 7350 1.7 3.4 50 6.0 4.9 122 PARKER PEAK 9400 9.7 8.0 121 10.0 6.5 154 SYLVAN LAKE 8420 6.6 7.8 85 10.7 8.5 126 THUMB DIVIDE 7980 3.4 5.2 65 7.5 6.6 114 TWO OCEAN PLATEAU 9240 14.0 10.0 140 13.4 10.0 134 WHISKEY CREEK 6800 3.9 5.1 76 9.3 7.2 129 WHITE MILL 8700 10.6 8.3 128 11.4 9.6 119 WOLVERINE 7650 2.8 3.9 72 6.6 5.4 122 ----- ----- Basin wide percent of average 107 127 WIND RIVER BURROUGHS CREEK 8750 6.8 5.0 136 9.5 5.9 161 COLD SPRINGS 9630 1.1 3.7 30 4.1 4.7 87 DEER PARK 9700 2.6 5.2 50 5.9 8.3 71 HOBBS PARK 10100 2.9 6.3 46 4.6 5.2 88 LITTLE WARM 9370 3.3 4.2 79 5.8 5.3 109 SOUTH PASS 9040 2.1 6.4 33 5.2 7.2 72 ST. LAWRENCE ALT 8620 1.2 3.1 39 3.0 3.9 77 TOGWOTEE PASS 9580 10.3 8.5 121 11.8 8.9 133 TOWNSEND CREEK 8700 1.0 3.5 29 4.4 5.1 86 ----- ----- Basin wide percent of average 68 100 BIGHORN BASIN BALD MTN. 9380 4.9 7.0 70 6.2 6.3 98 BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.8 95 BLACKWATER 9780 10.5 9.5 111 10.0 8.6 116 BONE SPRINGS DIV 9350 4.7 6.0 78 5.6 5.7 98 EVENING STAR 9200 11.2 10.5 107 13.5 9.8 138 GRAVE SPRINGS 8550 2.4 3.0 80 4.3 4.0 108 KIRWIN 9550 5.9 4.9 120 7.2 4.7 153 MARQUETTE 8760 .4 4.2 10 4.6 4.5 102 MIDDLE POWDER 7760 2.7 4.1 66 3.8 5.6 68 OWL CREEK 8975 2.1 2.2 95 3.9 2.4 162 POWDER RIVER PASS 9480 3.4 3.9 87 5.3 4.7 113 SHELL CREEK 9580 6.5 5.7 114 7.1 5.2 137 SYLVAN LAKE 8420 6.6 7.8 85 10.7 8.5 126 SYLVAN ROAD 7120 3.2 4.5 71 10.7 8.1 132 TIMBER CREEK 7950 .6 2.5 24 4.6 3.3 139 YOUNTS PEAK 8350 6.4 5.9 108 9.2 6.1 151 ----- ----- Basin wide percent of average 88 121 SHOSHONE RIVER BLACKWATER 9780 10.5 9.5 111 10.0 8.6 116 EVENING STAR 9200 11.2 10.5 107 13.5 9.8 138 KIRWIN 9550 5.9 4.9 120 7.2 4.7 153 MARQUETTE 8760 .4 4.2 10 4.6 4.5 102 SYLVAN LAKE 8420 6.6 7.8 85 10.7 8.5 126 SYLVAN ROAD 7120 3.2 4.5 71 10.7 8.1 132 YOUNTS PEAK 8350 6.4 5.9 108 9.2 6.1 151 ----- ----- Basin wide percent of average 93 131 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.8 95 BIG GOOSE 7990 2.8 3.0 93 5.7 3.6 158 BONE SPRINGS DIV 9350 4.7 6.0 78 5.6 5.7 98 BURGESS JUNCTION 7880 2.8 4.0 70 5.4 4.8 113 CLOUD PEAK RESERVOIR 9860 4.8 4.3 112 6.7 5.4 124 DOME LAKE 8880 3.4 4.7 72 6.8 5.6 121 GRAVE SPRINGS 8550 2.4 3.0 80 4.3 4.0 108 HANSEN SAWMILL 8360 2.4 2.5 96 4.7 3.6 131 MIDDLE POWDER 7760 2.7 4.1 66 3.8 5.6 68 POWDER RIVER PASS 9480 3.4 3.9 87 5.3 4.7 113 SUCKER CREEK 8880 3.3 3.7 89 5.3 5.2 102 TIE CREEK 6870 .4 1.4 29 4.2 4.2 100 ----- ----- Basin wide percent of average 83 109 BELLE FOURCHE BLIND PARK 6890 1.0 2.2 45 3.1 5.0 62 COLE CANYON 5910 .5 2.5 20 2.3 3.3 70 NORTH RAPID CREEK 6130 1.8 2.2 82 2.4 4.3 56 ----- ----- Basin wide percent of average 48 62 UPPER N. PLATTE RIVER COLUMBINE 9160 4.2 6.5 65 7.9 8.0 99 DIVIDE PEAK 8880 6.5 6.3 103 7.6 7.5 101 ELK RIVER 8700 4.8 4.3 112 7.3 6.4 114 JOE WRIGHT 10120 7.5 7.3 103 9.8 9.1 108 NORTH FRENCH CREEK 10130 9.3 9.6 97 10.4 8.9 117 OLD BATTLE 10000 9.0 11.0 82 11.3 11.5 98 SAGE CREEK BASIN 7850 3.9 3.7 105 5.9 4.3 137 SOUTH BRUSH CREEK 8440 4.0 3.6 111 7.1 6.0 118 TOWER 10500 9.4 15.3 61 12.3 13.0 95 WEBBER SPRINGS 9250 6.6 8.3 80 9.3 9.5 98 WILLOW CREEK PASS 9540 6.0 4.3 140 6.8 5.1 133 ----- ----- Basin wide percent of average 89 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.4 7.5 85 7.9 7.5 105 CASPER MTN. 7900 1.7 5.4 31 5.3 6.0 88 DEADMAN HILL 10220 6.2 5.9 105 6.1 6.1 100 DEER PARK 9700 2.6 5.2 50 5.9 8.3 71 LAPRELE CREEK 8375 .7 3.9 18 3.6 4.9 73 RENO HILL 8400 3.2 5.1 63 5.0 5.8 86 ROACH 9700 6.1 5.3 115 7.8 6.3 124 SAND LAKE 10050 9.1 11.2 81 9.8 8.6 114 SOUTH PASS 9040 2.1 6.4 33 5.2 7.2 72 WINDY PEAK 7900 1.6 2.8 57 3.4 4.3 79 ----- ----- Basin wide percent of average 68 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.5 2.4 104 5.4 5.3 102 DIVIDE PEAK 8880 6.5 6.3 103 7.6 7.5 101 OLD BATTLE 10000 9.0 11.0 82 11.3 11.5 98 SANDSTONE RS 8150 3.0 3.2 94 6.5 6.6 98 WHISKEY PARK 8950 6.4 7.6 84 9.9 9.6 103 ----- ----- Basin wide percent of average 90 100 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.5 5.0 50 3.4 5.1 67 BLIND BULL SUM 8650 5.4 9.1 59 5.9 8.1 73 EAST RIM DIVIDE 7930 .8 4.1 20 3.6 4.2 86 ELKHART PARK G.S. 9400 2.6 4.4 59 3.9 5.2 75 GROS VENTRE SUMMIT 8750 4.8 4.9 98 6.5 5.0 130 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * KENDALL R.S. 7740 2.0 4.3 47 4.6 4.9 94 LOOMIS PARK 8240 3.1 5.6 55 4.8 6.0 80 NEW FORK LAKE 8340 2.0 3.7 54 3.2 4.5 71 SNIDER BASIN 8060 1.4 4.7 30 3.3 5.6 59 SPRING CREEK DIVIDE 9000 4.3 8.8 49 5.7 9.2 62 TRIPLE PEAK 8500 5.1 8.2 62 7.9 8.0 99 ----- ----- Basin wide percent of average 54 80 LOWER GREEN RIVER HAMS FORK 7840 .6 3.4 18 2.7 4.3 63 HEWINTA 9519 .7 2.7 26 5.6 5.7 98 HICKERSON PARK 9145 .7 1.9 37 3.3 3.6 92 HOLE-IN-ROCK 9150 .6 1.8 33 4.1 3.3 124 INDIAN CREEK 9425 3.5 8.6 41 4.6 8.7 53 KELLEY R.S. 8180 1.7 5.4 31 4.4 7.1 62 STEEL CREEK PARK 10200 2.0 4.9 41 6.3 6.0 105 ----- ----- Basin wide percent of average 34 80 UPPER BEAR RIVER BUG LAKE 7950 -M 5.3 * 3.1 6.9 45 HAYDEN FORK 9212 2.6 4.0 65 5.6 7.4 76 KELLEY R.S. 8180 1.7 5.4 31 4.4 7.1 62 LILY LAKE 9156 1.4 3.7 38 5.2 6.7 78 MONTE CRISTO 8960 3.7 6.9 54 6.0 8.9 67 SALT RIVER SUMMIT 7760 -M 3.5 * 3.4 6.2 55 TRIAL LAKE 9992 4.0 7.1 56 5.8 8.2 71 ----- ----- Basin wide percent of average 49 65 ----------------------------------------------------------------------------- -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.