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 SATURDAY: DECEMBER 8 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.4 4.9 90 10.8 7.0 154 COTTONWOOD CREEK 7670 4.0 5.6 71 7.4 9.0 82 GRAND TARGHEE 9260 15.5 -M * 13.3 -M * GRANITE CREEK 6770 2.4 4.2 57 8.2 6.2 132 GRASSY LAKE 7265 7.1 9.0 79 14.8 11.1 133 GROS VENTRE SUMMIT 8750 5.0 4.5 111 6.3 4.7 134 GUNSIGHT PASS 9820 3.4 -M * 6.2 -M * LEWIS LAKE DIVIDE 7850 8.9 9.1 98 14.3 11.4 125 PHILLIPS BENCH 8200 6.3 7.6 83 10.7 8.6 124 SALT RIVER SUMMIT 7760 .8 3.2 25 3.4 5.7 60 SNAKE RIVER STATION 6920 3.2 4.8 67 10.7 7.4 145 SPRING CREEK DIVIDE 9000 4.3 8.1 53 5.8 8.4 69 THUMB DIVIDE 7980 3.6 4.7 77 7.6 6.1 125 TOGWOTEE PASS 9580 10.3 7.9 130 11.7 8.2 143 TWO OCEAN PLATEAU 9240 13.9 9.4 148 13.5 9.3 145 WILLOW CREEK 8380 4.9 9.0 54 10.6 10.6 100 ----- ----- Basin wide percent of average 86 119 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.3 7.9 130 10.0 6.8 147 BLACK BEAR 8170 11.7 11.2 104 14.3 11.9 120 CANYON 7870 4.8 3.9 123 7.9 5.4 146 FISHER CREEK 9100 15.7 10.9 144 14.8 11.2 132 MADISON PLATEAU 7750 7.0 7.3 96 11.1 8.4 132 NORTHEAST ENTRANCE 7350 1.7 3.1 55 6.0 4.5 133 PARKER PEAK 9400 9.5 7.5 127 9.8 6.1 161 SYLVAN LAKE 8420 6.5 7.3 89 10.8 8.0 135 THUMB DIVIDE 7980 3.6 4.7 77 7.6 6.1 125 TWO OCEAN PLATEAU 9240 13.9 9.4 148 13.5 9.3 145 WHISKEY CREEK 6800 4.0 4.6 87 9.3 6.7 139 WHITE MILL 8700 10.5 7.7 136 11.1 8.8 126 WOLVERINE 7650 2.8 3.6 78 6.4 5.0 128 ----- ----- Basin wide percent of average 114 135 WIND RIVER BURROUGHS CREEK 8750 6.7 4.6 146 9.4 5.5 171 COLD SPRINGS 9630 1.0 3.4 29 3.8 4.5 84 DEER PARK 9700 2.3 4.9 47 5.7 7.8 73 HOBBS PARK 10100 2.8 5.9 47 4.5 5.0 90 LITTLE WARM 9370 3.2 3.9 82 5.7 5.1 112 SOUTH PASS 9040 1.8 5.7 32 4.8 6.7 72 ST. LAWRENCE ALT 8620 1.1 2.9 38 2.7 3.7 73 TOGWOTEE PASS 9580 10.3 7.9 130 11.7 8.2 143 TOWNSEND CREEK 8700 1.1 3.2 34 4.0 4.8 83 ----- ----- Basin wide percent of average 71 102 BIGHORN BASIN BALD MTN. 9380 4.8 6.7 72 5.3 5.9 90 BEAR TRAP MEADOW 8200 2.0 1.9 105 3.5 3.6 97 BLACKWATER 9780 10.4 8.9 117 9.8 8.1 121 BONE SPRINGS DIV 9350 4.6 5.8 79 5.5 5.3 104 EVENING STAR 9200 11.1 9.7 114 13.4 9.2 146 GRAVE SPRINGS 8550 2.3 2.8 82 4.1 3.8 108 KIRWIN 9550 5.9 4.6 128 6.9 4.5 153 MARQUETTE 8760 .1 4.0 2 4.3 4.4 98 MIDDLE POWDER 7760 2.6 3.9 67 3.7 5.3 70 OWL CREEK 8975 2.0 2.0 100 3.8 2.3 165 POWDER RIVER PASS 9480 3.3 3.7 89 5.2 4.5 116 SHELL CREEK 9580 6.4 5.5 116 6.9 4.9 141 SYLVAN LAKE 8420 6.5 7.3 89 10.8 8.0 135 SYLVAN ROAD 7120 3.2 4.2 76 10.5 7.5 140 TIMBER CREEK 7950 .6 2.5 24 4.5 3.2 141 YOUNTS PEAK 8350 6.4 5.5 116 9.1 5.8 157 ----- ----- Basin wide percent of average 91 124 SHOSHONE RIVER BLACKWATER 9780 10.4 8.9 117 9.8 8.1 121 EVENING STAR 9200 11.1 9.7 114 13.4 9.2 146 KIRWIN 9550 5.9 4.6 128 6.9 4.5 153 MARQUETTE 8760 .1 4.0 2 4.3 4.4 98 SYLVAN LAKE 8420 6.5 7.3 89 10.8 8.0 135 SYLVAN ROAD 7120 3.2 4.2 76 10.5 7.5 140 YOUNTS PEAK 8350 6.4 5.5 116 9.1 5.8 157 ----- ----- Basin wide percent of average 99 136 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.0 1.9 105 3.5 3.6 97 BIG GOOSE 7990 2.6 2.7 96 5.5 3.3 167 BONE SPRINGS DIV 9350 4.6 5.8 79 5.5 5.3 104 BURGESS JUNCTION 7880 2.7 3.8 71 4.7 4.6 102 CLOUD PEAK RESERVOIR 9860 4.8 4.1 117 6.6 5.2 127 DOME LAKE 8880 3.2 4.6 70 6.5 5.3 123 GRAVE SPRINGS 8550 2.3 2.8 82 4.1 3.8 108 HANSEN SAWMILL 8360 2.3 2.3 100 4.5 3.4 132 MIDDLE POWDER 7760 2.6 3.9 67 3.7 5.3 70 POWDER RIVER PASS 9480 3.3 3.7 89 5.2 4.5 116 SUCKER CREEK 8880 3.3 3.5 94 4.9 4.9 100 TIE CREEK 6870 .4 1.2 33 4.2 4.0 105 ----- ----- Basin wide percent of average 85 111 BELLE FOURCHE BLIND PARK 6890 1.1 2.2 50 2.9 4.8 60 COLE CANYON 5910 .3 2.3 13 2.1 3.2 66 NORTH RAPID CREEK 6130 1.6 2.0 80 2.3 4.1 56 ----- ----- Basin wide percent of average 46 60 UPPER N. PLATTE RIVER COLUMBINE 9160 3.9 5.9 66 7.7 7.4 104 DIVIDE PEAK 8880 5.9 5.8 102 7.0 7.0 100 ELK RIVER 8700 4.0 3.8 105 6.7 5.9 114 JOE WRIGHT 10120 7.3 6.9 106 9.3 8.6 108 NORTH FRENCH CREEK 10130 8.9 8.9 100 10.0 8.3 120 OLD BATTLE 10000 8.3 10.3 81 10.8 10.6 102 SAGE CREEK BASIN 7850 2.5 3.4 74 5.3 4.0 132 SOUTH BRUSH CREEK 8440 3.8 3.3 115 6.8 5.7 119 TOWER 10500 9.0 14.3 63 11.7 12.1 97 WEBBER SPRINGS 9250 5.9 7.6 78 8.6 8.8 98 WILLOW CREEK PASS 9540 5.6 4.0 140 6.4 4.8 133 ----- ----- Basin wide percent of average 88 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 5.9 6.9 86 7.1 7.0 101 CASPER MTN. 7900 1.5 5.1 29 5.0 5.7 88 DEADMAN HILL 10220 5.8 5.5 105 5.9 5.8 102 DEER PARK 9700 2.3 4.9 47 5.7 7.8 73 LAPRELE CREEK 8375 .4 3.6 11 3.3 4.7 70 RENO HILL 8400 2.7 4.7 57 4.8 5.5 87 ROACH 9700 5.3 4.9 108 7.2 5.9 122 SAND LAKE 10050 8.7 10.4 84 9.5 8.0 119 SOUTH PASS 9040 1.8 5.7 32 4.8 6.7 72 WINDY PEAK 7900 1.4 2.6 54 3.0 4.1 73 ----- ----- Basin wide percent of average 66 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.3 2.2 105 5.2 4.9 106 DIVIDE PEAK 8880 5.9 5.8 102 7.0 7.0 100 OLD BATTLE 10000 8.3 10.3 81 10.8 10.6 102 SANDSTONE RS 8150 2.6 2.9 90 6.1 6.1 100 WHISKEY PARK 8950 5.9 7.0 84 9.3 8.9 104 ----- ----- Basin wide percent of average 89 102 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.7 4.6 59 3.6 4.7 77 BLIND BULL SUM 8650 5.4 8.3 65 5.7 7.4 77 EAST RIM DIVIDE 7930 1.0 3.8 26 3.6 3.9 92 ELKHART PARK G.S. 9400 2.7 4.1 66 4.1 4.9 84 GROS VENTRE SUMMIT 8750 5.0 4.5 111 6.3 4.7 134 GUNSIGHT PASS 9820 3.4 -M * 6.2 -M * KENDALL R.S. 7740 2.2 3.9 56 4.6 4.6 100 LOOMIS PARK 8240 3.2 5.1 63 5.0 5.6 89 NEW FORK LAKE 8340 2.1 3.3 64 3.5 4.2 83 SNIDER BASIN 8060 1.5 4.3 35 3.3 5.1 65 SPRING CREEK DIVIDE 9000 4.3 8.1 53 5.8 8.4 69 TRIPLE PEAK 8500 5.2 7.5 69 8.0 7.4 108 ----- ----- Basin wide percent of average 61 88 LOWER GREEN RIVER HAMS FORK 7840 .7 3.1 23 2.6 4.0 65 HEWINTA 9519 .9 2.5 36 5.7 5.4 106 HICKERSON PARK 9145 1.1 1.7 65 3.5 3.4 103 HOLE-IN-ROCK 9150 .7 1.7 41 4.0 3.2 125 INDIAN CREEK 9425 3.6 7.8 46 4.5 8.0 56 KELLEY R.S. 8180 1.9 4.9 39 4.4 6.5 68 STEEL CREEK PARK 10200 2.4 4.5 53 6.3 5.7 111 ----- ----- Basin wide percent of average 43 86 UPPER BEAR RIVER BUG LAKE 7950 -M 4.8 * 3.2 6.4 50 HAYDEN FORK 9212 2.6 3.6 72 5.4 6.9 78 KELLEY R.S. 8180 1.9 4.9 39 4.4 6.5 68 LILY LAKE 9156 1.4 3.4 41 5.3 6.3 84 MONTE CRISTO 8960 3.5 6.2 56 5.6 8.3 67 SALT RIVER SUMMIT 7760 .8 3.2 25 3.4 5.7 60 TRIAL LAKE 9992 4.3 6.5 66 5.7 7.6 75 ----- ----- Basin wide percent of average 52 69 ----------------------------------------------------------------------------- -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.