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 TUESDAY: DECEMBER 11 , 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 5.3 85 10.8 7.4 146 COTTONWOOD CREEK 7670 3.9 6.1 64 7.4 9.6 77 GRAND TARGHEE 9260 15.8 -M * 13.3 -M * GRANITE CREEK 6770 2.5 4.6 54 8.2 6.6 124 GRASSY LAKE 7265 7.2 9.7 74 14.8 11.8 125 GROS VENTRE SUMMIT 8750 4.9 4.8 102 6.5 4.9 133 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * LEWIS LAKE DIVIDE 7850 8.9 9.8 91 14.2 12.2 116 PHILLIPS BENCH 8200 6.3 8.3 76 10.8 9.2 117 SALT RIVER SUMMIT 7760 .8 3.4 24 3.3 6.1 54 SNAKE RIVER STATION 6920 3.1 5.2 60 10.7 7.9 135 SPRING CREEK DIVIDE 9000 4.4 8.6 51 5.8 9.0 64 THUMB DIVIDE 7980 3.4 5.1 67 7.5 6.5 115 TOGWOTEE PASS 9580 10.3 8.4 123 11.8 8.7 136 TWO OCEAN PLATEAU 9240 14.0 9.9 141 13.5 9.9 136 WILLOW CREEK 8380 5.2 9.6 54 10.8 11.2 96 ----- ----- Basin wide percent of average 80 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.3 8.4 123 10.1 7.2 140 BLACK BEAR 8170 12.0 12.0 100 14.7 12.6 117 CANYON 7870 4.9 4.1 120 8.1 5.7 142 FISHER CREEK 9100 16.0 11.6 138 15.3 12.0 128 MADISON PLATEAU 7750 7.1 7.8 91 11.1 9.0 123 NORTHEAST ENTRANCE 7350 1.7 3.3 52 6.0 4.8 125 PARKER PEAK 9400 9.6 7.9 122 9.9 6.4 155 SYLVAN LAKE 8420 6.7 7.7 87 10.9 8.4 130 THUMB DIVIDE 7980 3.4 5.1 67 7.5 6.5 115 TWO OCEAN PLATEAU 9240 14.0 9.9 141 13.5 9.9 136 WHISKEY CREEK 6800 4.0 4.9 82 9.3 7.1 131 WHITE MILL 8700 10.6 8.1 131 11.3 9.4 120 WOLVERINE 7650 2.9 3.9 74 6.4 5.3 121 ----- ----- Basin wide percent of average 109 129 WIND RIVER BURROUGHS CREEK 8750 6.8 4.9 139 9.5 5.8 164 COLD SPRINGS 9630 1.1 3.7 30 4.1 4.7 87 DEER PARK 9700 2.5 5.1 49 5.9 8.2 72 HOBBS PARK 10100 2.9 6.2 47 4.6 5.2 88 LITTLE WARM 9370 3.3 4.1 80 5.7 5.2 110 SOUTH PASS 9040 1.9 6.1 31 5.2 7.1 73 ST. LAWRENCE ALT 8620 1.3 3.1 42 3.0 3.8 79 TOGWOTEE PASS 9580 10.3 8.4 123 11.8 8.7 136 TOWNSEND CREEK 8700 1.2 3.4 35 4.3 5.0 86 ----- ----- Basin wide percent of average 70 101 BIGHORN BASIN BALD MTN. 9380 4.9 6.9 71 5.7 6.2 92 BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.8 95 BLACKWATER 9780 10.4 9.4 111 9.9 8.4 118 BONE SPRINGS DIV 9350 4.7 6.0 78 5.6 5.6 100 EVENING STAR 9200 11.2 10.4 108 13.5 9.6 141 GRAVE SPRINGS 8550 2.4 2.9 83 4.2 4.0 105 KIRWIN 9550 5.9 4.8 123 7.1 4.7 151 MARQUETTE 8760 .3 4.2 7 4.5 4.5 100 MIDDLE POWDER 7760 2.7 4.0 68 3.8 5.5 69 OWL CREEK 8975 2.0 2.1 95 3.9 2.4 162 POWDER RIVER PASS 9480 3.3 3.9 85 5.2 4.7 111 SHELL CREEK 9580 6.5 5.6 116 7.1 5.2 137 SYLVAN LAKE 8420 6.7 7.7 87 10.9 8.4 130 SYLVAN ROAD 7120 3.2 4.4 73 10.6 7.9 134 TIMBER CREEK 7950 .7 2.5 28 4.6 3.3 139 YOUNTS PEAK 8350 6.4 5.8 110 9.2 6.0 153 ----- ----- Basin wide percent of average 89 121 SHOSHONE RIVER BLACKWATER 9780 10.4 9.4 111 9.9 8.4 118 EVENING STAR 9200 11.2 10.4 108 13.5 9.6 141 KIRWIN 9550 5.9 4.8 123 7.1 4.7 151 MARQUETTE 8760 .3 4.2 7 4.5 4.5 100 SYLVAN LAKE 8420 6.7 7.7 87 10.9 8.4 130 SYLVAN ROAD 7120 3.2 4.4 73 10.6 7.9 134 YOUNTS PEAK 8350 6.4 5.8 110 9.2 6.0 153 ----- ----- Basin wide percent of average 94 133 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.8 95 BIG GOOSE 7990 2.9 2.9 100 5.7 3.5 163 BONE SPRINGS DIV 9350 4.7 6.0 78 5.6 5.6 100 BURGESS JUNCTION 7880 2.8 3.9 72 5.1 4.8 106 CLOUD PEAK RESERVOIR 9860 4.8 4.3 112 6.7 5.3 126 DOME LAKE 8880 3.3 4.7 70 6.7 5.5 122 GRAVE SPRINGS 8550 2.4 2.9 83 4.2 4.0 105 HANSEN SAWMILL 8360 2.3 2.4 96 4.6 3.5 131 MIDDLE POWDER 7760 2.7 4.0 68 3.8 5.5 69 POWDER RIVER PASS 9480 3.3 3.9 85 5.2 4.7 111 SUCKER CREEK 8880 3.3 3.7 89 4.8 5.1 94 TIE CREEK 6870 .4 1.3 31 4.2 4.1 102 ----- ----- Basin wide percent of average 84 109 BELLE FOURCHE BLIND PARK 6890 1.2 2.2 55 3.1 5.0 62 COLE CANYON 5910 .5 2.4 21 2.3 3.2 72 NORTH RAPID CREEK 6130 1.8 2.1 86 2.4 4.2 57 ----- ----- Basin wide percent of average 52 63 UPPER N. PLATTE RIVER COLUMBINE 9160 4.3 6.3 68 7.9 7.9 100 DIVIDE PEAK 8880 6.5 6.2 105 7.5 7.3 103 ELK RIVER 8700 4.7 4.1 115 7.3 6.3 116 JOE WRIGHT 10120 7.2 7.2 100 9.5 9.0 106 NORTH FRENCH CREEK 10130 9.2 9.4 98 10.4 8.8 118 OLD BATTLE 10000 8.9 10.8 82 11.3 11.3 100 SAGE CREEK BASIN 7850 3.5 3.6 97 5.8 4.3 135 SOUTH BRUSH CREEK 8440 4.0 3.5 114 7.1 5.9 120 TOWER 10500 9.4 15.1 62 12.3 12.8 96 WEBBER SPRINGS 9250 6.5 8.1 80 9.2 9.3 99 WILLOW CREEK PASS 9540 5.8 4.2 138 6.6 5.0 132 ----- ----- Basin wide percent of average 89 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.3 7.3 86 7.7 7.3 105 CASPER MTN. 7900 1.7 5.4 31 5.3 5.9 90 DEADMAN HILL 10220 6.0 5.8 103 6.0 6.1 98 DEER PARK 9700 2.5 5.1 49 5.9 8.2 72 LAPRELE CREEK 8375 .7 3.8 18 3.6 4.8 75 RENO HILL 8400 3.0 5.0 60 5.1 5.7 89 ROACH 9700 5.9 5.2 113 7.7 6.2 124 SAND LAKE 10050 9.1 11.0 83 9.7 8.5 114 SOUTH PASS 9040 1.9 6.1 31 5.2 7.1 73 WINDY PEAK 7900 1.7 2.7 63 3.4 4.3 79 ----- ----- Basin wide percent of average 68 93 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.6 2.3 113 5.4 5.2 104 DIVIDE PEAK 8880 6.5 6.2 105 7.5 7.3 103 OLD BATTLE 10000 8.9 10.8 82 11.3 11.3 100 SANDSTONE RS 8150 2.9 3.1 94 6.5 6.4 102 WHISKEY PARK 8950 6.4 7.5 85 9.7 9.4 103 ----- ----- Basin wide percent of average 91 102 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 4.9 55 3.6 5.0 72 BLIND BULL SUM 8650 5.4 8.9 61 5.8 7.9 73 EAST RIM DIVIDE 7930 .9 4.0 22 3.6 4.1 88 ELKHART PARK G.S. 9400 2.6 4.3 60 3.9 5.1 76 GROS VENTRE SUMMIT 8750 4.9 4.8 102 6.5 4.9 133 GUNSIGHT PASS 9820 3.2 -M * 6.1 -M * KENDALL R.S. 7740 2.1 4.2 50 4.6 4.8 96 LOOMIS PARK 8240 3.2 5.5 58 5.0 5.9 85 NEW FORK LAKE 8340 2.0 3.6 56 3.2 4.4 73 SNIDER BASIN 8060 1.4 4.6 30 3.2 5.5 58 SPRING CREEK DIVIDE 9000 4.4 8.6 51 5.8 9.0 64 TRIPLE PEAK 8500 5.2 8.0 65 7.9 7.9 100 ----- ----- Basin wide percent of average 57 82 LOWER GREEN RIVER HAMS FORK 7840 -M 3.3 * 2.7 4.2 64 HEWINTA 9519 .7 2.6 27 5.7 5.6 102 HICKERSON PARK 9145 .8 1.9 42 3.6 3.5 103 HOLE-IN-ROCK 9150 .7 1.8 39 4.1 3.3 124 INDIAN CREEK 9425 3.7 8.4 44 4.7 8.5 55 KELLEY R.S. 8180 1.7 5.3 32 4.4 6.9 64 STEEL CREEK PARK 10200 2.4 4.8 50 6.3 5.9 107 ----- ----- Basin wide percent of average 40 83 UPPER BEAR RIVER BUG LAKE 7950 -M 5.2 * 3.1 6.8 46 HAYDEN FORK 9212 2.7 3.9 69 5.7 7.3 78 KELLEY R.S. 8180 1.7 5.3 32 4.4 6.9 64 LILY LAKE 9156 1.5 3.6 42 5.4 6.6 82 MONTE CRISTO 8960 3.9 6.7 58 6.0 8.8 68 SALT RIVER SUMMIT 7760 .8 3.4 24 3.3 6.1 54 TRIAL LAKE 9992 4.3 7.0 61 5.9 8.0 74 ----- ----- Basin wide percent of average 50 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.