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 FRIDAY: DECEMBER 7 , 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 4.8 94 10.8 6.9 157 COTTONWOOD CREEK 7670 3.9 5.5 71 7.3 8.9 82 GRAND TARGHEE 9260 15.5 -M * 13.2 -M * GRANITE CREEK 6770 2.3 4.1 56 8.0 6.1 131 GRASSY LAKE 7265 7.1 8.8 81 14.7 10.8 136 GROS VENTRE SUMMIT 8750 4.8 4.4 109 6.1 4.6 133 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * LEWIS LAKE DIVIDE 7850 9.0 8.9 101 14.4 11.2 129 PHILLIPS BENCH 8200 6.1 7.4 82 10.5 8.4 125 SALT RIVER SUMMIT 7760 .6 3.1 19 3.3 5.6 59 SNAKE RIVER STATION 6920 3.2 4.7 68 10.7 7.2 149 SPRING CREEK DIVIDE 9000 4.1 7.9 52 5.5 8.2 67 THUMB DIVIDE 7980 3.6 4.6 78 7.6 6.0 127 TOGWOTEE PASS 9580 10.1 7.8 129 11.6 8.1 143 TWO OCEAN PLATEAU 9240 13.9 9.2 151 13.4 9.1 147 WILLOW CREEK 8380 4.8 8.8 55 10.6 10.4 102 ----- ----- Basin wide percent of average 87 121 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.4 7.8 133 10.1 6.6 153 BLACK BEAR 8170 11.8 11.0 107 14.3 11.7 122 CANYON 7870 4.7 3.8 124 8.0 5.3 151 FISHER CREEK 9100 15.7 10.7 147 14.8 11.0 135 MADISON PLATEAU 7750 7.1 7.1 100 11.1 8.2 135 NORTHEAST ENTRANCE 7350 1.7 3.0 57 6.0 4.4 136 PARKER PEAK 9400 9.5 7.4 128 9.9 6.0 165 SYLVAN LAKE 8420 6.5 7.2 90 10.8 7.8 138 THUMB DIVIDE 7980 3.6 4.6 78 7.6 6.0 127 TWO OCEAN PLATEAU 9240 13.9 9.2 151 13.4 9.1 147 WHISKEY CREEK 6800 4.0 4.5 89 9.3 6.6 141 WHITE MILL 8700 10.5 7.5 140 11.1 8.6 129 WOLVERINE 7650 2.8 3.4 82 6.4 5.0 128 ----- ----- Basin wide percent of average 117 138 WIND RIVER BURROUGHS CREEK 8750 6.4 4.5 142 9.0 5.4 167 COLD SPRINGS 9630 .8 3.4 24 3.6 4.5 80 DEER PARK 9700 2.0 4.8 42 5.3 7.7 69 HOBBS PARK 10100 2.5 5.8 43 4.3 4.9 88 LITTLE WARM 9370 3.0 3.8 79 5.5 5.0 110 SOUTH PASS 9040 1.5 5.6 27 4.3 6.6 65 ST. LAWRENCE ALT 8620 .7 2.8 25 2.4 3.7 65 TOGWOTEE PASS 9580 10.1 7.8 129 11.6 8.1 143 TOWNSEND CREEK 8700 .7 3.1 23 3.5 4.8 73 ----- ----- Basin wide percent of average 67 98 BIGHORN BASIN BALD MTN. 9380 4.8 6.5 74 5.4 5.8 93 BEAR TRAP MEADOW 8200 1.9 1.9 100 3.4 3.6 94 BLACKWATER 9780 10.4 8.8 118 9.8 7.9 124 BONE SPRINGS DIV 9350 4.6 5.7 81 5.5 5.3 104 EVENING STAR 9200 11.1 9.5 117 13.5 9.0 150 GRAVE SPRINGS 8550 2.0 2.8 71 3.8 3.8 100 KIRWIN 9550 5.8 4.5 129 7.0 4.4 159 MARQUETTE 8760 -M 3.9 * 4.3 4.3 100 MIDDLE POWDER 7760 2.5 3.8 66 3.6 5.2 69 OWL CREEK 8975 1.6 2.0 80 3.4 2.3 148 POWDER RIVER PASS 9480 3.2 3.7 86 5.2 4.4 118 SHELL CREEK 9580 6.3 5.4 117 6.8 4.9 139 SYLVAN LAKE 8420 6.5 7.2 90 10.8 7.8 138 SYLVAN ROAD 7120 3.2 4.1 78 10.5 7.3 144 TIMBER CREEK 7950 .4 2.5 16 4.3 3.1 139 YOUNTS PEAK 8350 6.3 5.4 117 9.1 5.7 160 ----- ----- Basin wide percent of average 96 125 SHOSHONE RIVER BLACKWATER 9780 10.4 8.8 118 9.8 7.9 124 EVENING STAR 9200 11.1 9.5 117 13.5 9.0 150 KIRWIN 9550 5.8 4.5 129 7.0 4.4 159 MARQUETTE 8760 -M 3.9 * 4.3 4.3 100 SYLVAN LAKE 8420 6.5 7.2 90 10.8 7.8 138 SYLVAN ROAD 7120 3.2 4.1 78 10.5 7.3 144 YOUNTS PEAK 8350 6.3 5.4 117 9.1 5.7 160 ----- ----- Basin wide percent of average 110 140 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.9 1.9 100 3.4 3.6 94 BIG GOOSE 7990 2.6 2.7 96 5.4 3.3 164 BONE SPRINGS DIV 9350 4.6 5.7 81 5.5 5.3 104 BURGESS JUNCTION 7880 2.7 3.7 73 4.6 4.5 102 CLOUD PEAK RESERVOIR 9860 4.7 4.1 115 6.5 5.2 125 DOME LAKE 8880 3.2 4.5 71 6.5 5.2 125 GRAVE SPRINGS 8550 2.0 2.8 71 3.8 3.8 100 HANSEN SAWMILL 8360 2.2 2.2 100 4.4 3.4 129 MIDDLE POWDER 7760 2.5 3.8 66 3.6 5.2 69 POWDER RIVER PASS 9480 3.2 3.7 86 5.2 4.4 118 SUCKER CREEK 8880 3.2 3.5 91 5.1 4.8 106 TIE CREEK 6870 .4 1.2 33 4.2 3.9 108 ----- ----- Basin wide percent of average 83 111 BELLE FOURCHE BLIND PARK 6890 .9 2.2 41 2.8 4.7 60 COLE CANYON 5910 .3 2.2 14 2.2 3.1 71 NORTH RAPID CREEK 6130 1.4 1.9 74 2.0 4.0 50 ----- ----- Basin wide percent of average 41 59 UPPER N. PLATTE RIVER COLUMBINE 9160 3.4 5.7 60 7.1 7.2 99 DIVIDE PEAK 8880 5.0 5.7 88 6.2 6.8 91 ELK RIVER 8700 3.2 3.7 86 6.1 5.8 105 JOE WRIGHT 10120 6.8 6.8 100 8.9 8.4 106 NORTH FRENCH CREEK 10130 8.3 8.7 95 9.4 8.2 115 OLD BATTLE 10000 7.0 10.1 69 9.4 10.4 90 SAGE CREEK BASIN 7850 1.6 3.3 48 4.6 4.0 115 SOUTH BRUSH CREEK 8440 3.5 3.2 109 6.5 5.6 116 TOWER 10500 8.2 14.0 59 10.7 11.8 91 WEBBER SPRINGS 9250 5.0 7.5 67 7.6 8.6 88 WILLOW CREEK PASS 9540 4.6 3.9 118 5.5 4.7 117 ----- ----- Basin wide percent of average 78 101 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.9 6.7 73 6.3 6.9 91 CASPER MTN. 7900 1.3 5.0 26 4.7 5.6 84 DEADMAN HILL 10220 5.4 5.5 98 5.6 5.7 98 DEER PARK 9700 2.0 4.8 42 5.3 7.7 69 LAPRELE CREEK 8375 .2 3.5 6 3.0 4.6 65 RENO HILL 8400 2.6 4.7 55 4.7 5.5 85 ROACH 9700 4.6 4.8 96 6.5 5.8 112 SAND LAKE 10050 8.1 10.2 79 8.8 7.9 111 SOUTH PASS 9040 1.5 5.6 27 4.3 6.6 65 WINDY PEAK 7900 .7 2.5 28 2.6 4.0 65 ----- ----- Basin wide percent of average 59 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.6 2.1 76 4.4 4.8 92 DIVIDE PEAK 8880 5.0 5.7 88 6.2 6.8 91 OLD BATTLE 10000 7.0 10.1 69 9.4 10.4 90 SANDSTONE RS 8150 1.6 2.8 57 5.1 6.0 85 WHISKEY PARK 8950 5.0 6.9 72 8.3 8.8 94 ----- ----- Basin wide percent of average 73 91 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 4.5 58 3.5 4.7 74 BLIND BULL SUM 8650 5.3 8.1 65 5.6 7.2 78 EAST RIM DIVIDE 7930 .8 3.7 22 3.5 3.9 90 ELKHART PARK G.S. 9400 2.5 4.0 62 4.1 4.8 85 GROS VENTRE SUMMIT 8750 4.8 4.4 109 6.1 4.6 133 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * KENDALL R.S. 7740 2.0 3.8 53 4.4 4.5 98 LOOMIS PARK 8240 3.0 5.0 60 4.8 5.5 87 NEW FORK LAKE 8340 1.8 3.2 56 3.4 4.1 83 SNIDER BASIN 8060 1.2 4.2 29 3.0 5.0 60 SPRING CREEK DIVIDE 9000 4.1 7.9 52 5.5 8.2 67 TRIPLE PEAK 8500 4.9 7.3 67 7.7 7.3 105 ----- ----- Basin wide percent of average 59 86 LOWER GREEN RIVER HAMS FORK 7840 .5 3.0 17 2.2 3.9 56 HEWINTA 9519 .8 2.4 33 5.7 5.3 108 HICKERSON PARK 9145 1.0 1.7 59 3.6 3.4 106 HOLE-IN-ROCK 9150 .7 1.7 41 4.0 3.1 129 INDIAN CREEK 9425 3.2 7.6 42 4.2 7.8 54 KELLEY R.S. 8180 1.7 4.8 35 4.2 6.4 66 STEEL CREEK PARK 10200 2.3 4.4 52 6.1 5.6 109 ----- ----- Basin wide percent of average 40 85 UPPER BEAR RIVER BUG LAKE 7950 -M 4.7 * 2.9 6.3 46 HAYDEN FORK 9212 2.4 3.5 69 5.1 6.8 75 KELLEY R.S. 8180 1.7 4.8 35 4.2 6.4 66 LILY LAKE 9156 1.3 3.3 39 5.3 6.2 85 MONTE CRISTO 8960 2.6 6.0 43 5.2 8.1 64 SALT RIVER SUMMIT 7760 .6 3.1 19 3.3 5.6 59 TRIAL LAKE 9992 3.5 6.4 55 4.6 7.4 62 ----- ----- Basin wide percent of average 45 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.