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 THURSDAY: DECEMBER 6 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.1 4.6 89 10.3 6.7 154 COTTONWOOD CREEK 7670 3.7 5.3 70 7.2 8.7 83 GRAND TARGHEE 9260 14.9 -M * 12.8 -M * GRANITE CREEK 6770 2.1 4.0 52 8.0 5.9 136 GRASSY LAKE 7265 6.8 8.6 79 14.3 10.6 135 GROS VENTRE SUMMIT 8750 4.8 4.3 112 6.1 4.6 133 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * LEWIS LAKE DIVIDE 7850 8.9 8.6 103 14.4 10.9 132 PHILLIPS BENCH 8200 6.0 7.2 83 10.4 8.2 127 SALT RIVER SUMMIT 7760 .7 3.0 23 3.3 5.5 60 SNAKE RIVER STATION 6920 3.0 4.6 65 10.6 7.1 149 SPRING CREEK DIVIDE 9000 3.9 7.6 51 5.4 8.0 68 THUMB DIVIDE 7980 3.6 4.5 80 7.7 5.9 131 TOGWOTEE PASS 9580 9.9 7.6 130 11.3 7.9 143 TWO OCEAN PLATEAU 9240 13.6 9.0 151 13.2 9.0 147 WILLOW CREEK 8380 4.5 8.5 53 10.2 10.2 100 ----- ----- Basin wide percent of average 86 121 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.2 7.7 132 10.0 6.5 154 BLACK BEAR 8170 11.8 10.8 109 14.2 11.4 125 CANYON 7870 4.7 3.7 127 8.0 5.2 154 FISHER CREEK 9100 15.4 10.4 148 14.9 10.8 138 MADISON PLATEAU 7750 7.0 7.0 100 11.1 8.0 139 NORTHEAST ENTRANCE 7350 1.7 2.9 59 5.9 4.4 134 PARKER PEAK 9400 9.5 7.3 130 9.8 5.9 166 SYLVAN LAKE 8420 6.4 7.1 90 10.6 7.7 138 THUMB DIVIDE 7980 3.6 4.5 80 7.7 5.9 131 TWO OCEAN PLATEAU 9240 13.6 9.0 151 13.2 9.0 147 WHISKEY CREEK 6800 4.0 4.4 91 9.2 6.4 144 WHITE MILL 8700 10.2 7.3 140 11.1 8.5 131 WOLVERINE 7650 2.6 3.4 76 6.3 4.9 129 ----- ----- Basin wide percent of average 118 140 WIND RIVER BURROUGHS CREEK 8750 6.3 4.5 140 9.0 5.3 170 COLD SPRINGS 9630 .8 3.3 24 3.7 4.4 84 DEER PARK 9700 2.0 4.7 43 5.3 7.6 70 HOBBS PARK 10100 2.6 5.7 46 4.8 4.9 98 LITTLE WARM 9370 3.0 3.8 79 5.5 4.9 112 SOUTH PASS 9040 1.4 5.5 25 4.3 6.5 66 ST. LAWRENCE ALT 8620 .8 2.8 29 2.4 3.7 65 TOGWOTEE PASS 9580 9.9 7.6 130 11.3 7.9 143 TOWNSEND CREEK 8700 .8 3.1 26 3.5 4.7 74 ----- ----- Basin wide percent of average 67 100 BIGHORN BASIN BALD MTN. 9380 4.3 6.4 67 5.5 5.7 96 BEAR TRAP MEADOW 8200 1.7 1.8 94 3.4 3.6 94 BLACKWATER 9780 10.4 8.6 121 9.8 7.8 126 BONE SPRINGS DIV 9350 4.3 5.6 77 5.4 5.2 104 EVENING STAR 9200 11.0 9.4 117 13.5 8.8 153 GRAVE SPRINGS 8550 2.0 2.8 71 3.7 3.8 97 KIRWIN 9550 5.6 4.5 124 7.0 4.4 159 MARQUETTE 8760 .2 3.9 5 4.6 4.3 107 MIDDLE POWDER 7760 2.4 3.8 63 3.5 5.2 67 OWL CREEK 8975 1.6 2.0 80 3.5 2.3 152 POWDER RIVER PASS 9480 2.9 3.7 78 4.9 4.3 114 SHELL CREEK 9580 6.0 5.4 111 6.6 4.8 138 SYLVAN LAKE 8420 6.4 7.1 90 10.6 7.7 138 SYLVAN ROAD 7120 2.8 4.0 70 10.1 7.2 140 TIMBER CREEK 7950 .5 2.4 21 4.2 3.1 135 YOUNTS PEAK 8350 6.1 5.3 115 9.0 5.6 161 ----- ----- Basin wide percent of average 89 126 SHOSHONE RIVER BLACKWATER 9780 10.4 8.6 121 9.8 7.8 126 EVENING STAR 9200 11.0 9.4 117 13.5 8.8 153 KIRWIN 9550 5.6 4.5 124 7.0 4.4 159 MARQUETTE 8760 .2 3.9 5 4.6 4.3 107 SYLVAN LAKE 8420 6.4 7.1 90 10.6 7.7 138 SYLVAN ROAD 7120 2.8 4.0 70 10.1 7.2 140 YOUNTS PEAK 8350 6.1 5.3 115 9.0 5.6 161 ----- ----- Basin wide percent of average 99 141 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 1.8 94 3.4 3.6 94 BIG GOOSE 7990 2.6 2.6 100 5.7 3.2 178 BONE SPRINGS DIV 9350 4.3 5.6 77 5.4 5.2 104 BURGESS JUNCTION 7880 2.6 3.7 70 5.1 4.4 116 CLOUD PEAK RESERVOIR 9860 4.5 4.0 112 6.9 5.1 135 DOME LAKE 8880 3.1 4.5 69 6.5 5.2 125 GRAVE SPRINGS 8550 2.0 2.8 71 3.7 3.8 97 HANSEN SAWMILL 8360 2.0 2.2 91 4.6 3.3 139 MIDDLE POWDER 7760 2.4 3.8 63 3.5 5.2 67 POWDER RIVER PASS 9480 2.9 3.7 78 4.9 4.3 114 SUCKER CREEK 8880 2.9 3.5 83 4.8 4.8 100 TIE CREEK 6870 .4 1.3 31 4.0 3.9 103 ----- ----- Basin wide percent of average 79 113 BELLE FOURCHE BLIND PARK 6890 .7 2.1 33 2.7 4.7 57 COLE CANYON 5910 .3 2.2 14 2.3 3.1 74 NORTH RAPID CREEK 6130 1.2 1.9 63 2.2 4.0 55 ----- ----- Basin wide percent of average 35 61 UPPER N. PLATTE RIVER COLUMBINE 9160 2.7 5.6 48 6.5 7.0 93 DIVIDE PEAK 8880 5.1 5.6 91 6.1 6.7 91 ELK RIVER 8700 3.0 3.5 86 6.0 5.7 105 JOE WRIGHT 10120 6.5 6.7 97 8.6 8.3 104 NORTH FRENCH CREEK 10130 8.1 8.6 94 9.3 8.1 115 OLD BATTLE 10000 6.8 9.9 69 9.2 10.2 90 SAGE CREEK BASIN 7850 1.6 3.2 50 4.6 3.9 118 SOUTH BRUSH CREEK 8440 3.5 3.2 109 6.6 5.5 120 TOWER 10500 7.5 13.7 55 10.1 11.6 87 WEBBER SPRINGS 9250 4.8 7.3 66 7.5 8.5 88 WILLOW CREEK PASS 9540 4.2 3.9 108 5.1 4.7 109 ----- ----- Basin wide percent of average 76 99 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.7 6.6 71 6.1 6.7 91 CASPER MTN. 7900 1.4 5.0 28 4.8 5.6 86 DEADMAN HILL 10220 5.3 5.4 98 5.4 5.6 96 DEER PARK 9700 2.0 4.7 43 5.3 7.6 70 LAPRELE CREEK 8375 .2 3.5 6 3.0 4.5 67 RENO HILL 8400 2.6 4.6 57 4.7 5.4 87 ROACH 9700 4.4 4.7 94 6.3 5.7 111 SAND LAKE 10050 7.9 10.0 79 8.7 7.8 112 SOUTH PASS 9040 1.4 5.5 25 4.3 6.5 66 WINDY PEAK 7900 .7 2.5 28 2.7 4.0 68 ----- ----- Basin wide percent of average 58 86 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.5 2.1 71 4.2 4.7 89 DIVIDE PEAK 8880 5.1 5.6 91 6.1 6.7 91 OLD BATTLE 10000 6.8 9.9 69 9.2 10.2 90 SANDSTONE RS 8150 1.4 2.7 52 4.9 5.9 83 WHISKEY PARK 8950 4.6 6.7 69 7.9 8.6 92 ----- ----- Basin wide percent of average 72 89 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 4.4 59 3.5 4.6 76 BLIND BULL SUM 8650 5.1 7.9 65 5.4 7.1 76 EAST RIM DIVIDE 7930 .8 3.6 22 3.4 3.8 89 ELKHART PARK G.S. 9400 2.5 3.9 64 4.2 4.7 89 GROS VENTRE SUMMIT 8750 4.8 4.3 112 6.1 4.6 133 GUNSIGHT PASS 9820 3.3 -M * 6.0 -M * KENDALL R.S. 7740 2.0 3.7 54 4.5 4.4 102 LOOMIS PARK 8240 2.9 4.9 59 4.7 5.4 87 NEW FORK LAKE 8340 1.8 3.1 58 3.5 4.1 85 SNIDER BASIN 8060 1.1 4.1 27 3.0 4.9 61 SPRING CREEK DIVIDE 9000 3.9 7.6 51 5.4 8.0 68 TRIPLE PEAK 8500 4.6 7.1 65 7.5 7.1 106 ----- ----- Basin wide percent of average 59 87 LOWER GREEN RIVER HAMS FORK 7840 .4 2.9 14 2.2 3.8 58 HEWINTA 9519 .7 2.4 29 5.5 5.2 106 HICKERSON PARK 9145 .9 1.7 53 3.4 3.4 100 HOLE-IN-ROCK 9150 .7 1.6 44 4.0 3.1 129 INDIAN CREEK 9425 3.1 7.4 42 4.1 7.6 54 KELLEY R.S. 8180 1.7 4.7 36 4.2 6.2 68 STEEL CREEK PARK 10200 2.1 4.3 49 6.1 5.5 111 ----- ----- Basin wide percent of average 38 85 UPPER BEAR RIVER BUG LAKE 7950 -M 4.5 * 2.8 6.2 45 HAYDEN FORK 9212 2.2 3.4 65 4.9 6.7 73 KELLEY R.S. 8180 1.7 4.7 36 4.2 6.2 68 LILY LAKE 9156 1.2 3.2 37 5.2 6.1 85 MONTE CRISTO 8960 2.5 5.9 42 5.1 7.9 65 SALT RIVER SUMMIT 7760 .7 3.0 23 3.3 5.5 60 TRIAL LAKE 9992 3.1 6.2 50 4.3 7.3 59 ----- ----- Basin wide percent of average 43 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.