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 7 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.0 4.9 102 8.7 7.0 124 COTTONWOOD CREEK 7670 3.8 5.6 68 8.5 9.0 94 GRAND TARGHEE 9260 10.6 -M * 9.8 -M * GRANITE CREEK 6770 3.5 4.2 83 5.5 6.2 89 GRASSY LAKE 7265 5.2 9.0 58 10.3 11.1 93 GROS VENTRE SUMMIT 8750 3.2 4.5 71 4.7 4.7 100 GUNSIGHT PASS 9820 3.9 -M * 5.4 -M * LEWIS LAKE DIVIDE 7850 6.2 9.1 68 11.1 11.4 97 PHILLIPS BENCH 8200 4.5 7.6 59 7.2 8.6 84 SALT RIVER SUMMIT 7760 2.4 3.2 75 4.2 5.7 74 SNAKE RIVER STATION 6920 4.2 4.8 88 8.8 7.4 119 SPRING CREEK DIVIDE 9000 5.2 8.1 64 6.9 8.4 82 THUMB DIVIDE 7980 4.1 4.7 87 6.8 6.1 111 TOGWOTEE PASS 9580 6.7 7.9 85 8.5 8.2 104 TWO OCEAN PLATEAU 9240 11.2 9.4 119 9.8 9.3 105 WILLOW CREEK 8380 5.5 9.0 61 11.0 10.6 104 ----- ----- Basin wide percent of average 77 99 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.8 7.9 99 8.1 6.8 119 BLACK BEAR 8170 9.1 11.2 81 11.5 11.9 97 CANYON 7870 3.3 3.9 85 5.2 5.4 96 FISHER CREEK 9100 10.4 10.9 95 12.2 11.2 109 MADISON PLATEAU 7750 5.9 7.3 81 9.9 8.4 118 NORTHEAST ENTRANCE 7350 2.2 3.1 71 4.5 4.5 100 PARKER PEAK 9400 7.4 7.5 99 9.3 6.1 152 SYLVAN LAKE 8420 5.0 7.3 68 9.4 8.0 118 THUMB DIVIDE 7980 4.1 4.7 87 6.8 6.1 111 TWO OCEAN PLATEAU 9240 11.2 9.4 119 9.8 9.3 105 WHISKEY CREEK 6800 4.1 4.6 89 7.7 6.7 115 WHITE MILL 8700 5.8 7.7 75 8.0 8.8 91 WOLVERINE 7650 4.3 3.6 119 6.0 5.0 120 ----- ----- Basin wide percent of average 90 110 WIND RIVER BURROUGHS CREEK 8750 3.7 4.6 80 4.6 5.5 84 CASTLE CREEK 8400 2.1 -M * 3.1 -M * COLD SPRINGS 9630 3.4 3.4 100 4.7 4.5 104 DEER PARK 9700 3.7 4.9 76 6.9 7.8 88 HOBBS PARK 10100 6.2 5.9 105 6.3 5.0 126 LITTLE WARM 9370 2.7 3.9 69 4.9 5.0 98 SOUTH PASS 9040 4.4 5.7 77 5.7 6.7 85 ST. LAWRENCE ALT 8620 2.1 2.9 72 3.5 3.7 95 TOGWOTEE PASS 9580 6.7 7.9 85 8.5 8.2 104 TOWNSEND CREEK 8700 3.2 3.2 100 5.9 4.8 123 ----- ----- Basin wide percent of average 85 100 BIGHORN BASIN BALD MTN. 9380 7.5 6.7 112 6.9 5.9 117 BEAR TRAP MEADOW 8200 2.2 1.9 116 4.1 3.6 114 BLACKWATER 9780 10.2 8.9 115 9.8 8.0 122 BONE SPRINGS DIV 9350 7.9 5.8 136 7.5 5.3 142 EVENING STAR 9200 8.4 9.7 87 11.3 9.2 123 GRAVE SPRINGS 8550 2.6 2.8 93 4.7 3.8 124 KIRWIN 9550 5.8 4.6 126 7.1 4.5 158 MARQUETTE 8760 2.9 -M * 7.2 4.4 164 MIDDLE POWDER 7760 3.7 3.9 95 6.6 5.3 125 OWL CREEK 8975 2.1 2.0 105 3.1 2.4 129 POWDER RIVER PASS 9480 4.4 3.7 119 6.1 4.5 136 SHELL CREEK 9580 7.5 5.5 136 7.1 4.9 145 SYLVAN LAKE 8420 5.0 7.3 68 9.4 8.0 118 SYLVAN ROAD 7120 3.6 4.2 86 6.7 7.5 89 TIMBER CREEK 7950 2.5 2.5 100 5.9 3.2 184 YOUNTS PEAK 8350 5.0 5.5 91 6.3 5.8 109 ----- ----- Basin wide percent of average 105 127 SHOSHONE RIVER BLACKWATER 9780 10.2 8.9 115 9.8 8.0 122 EVENING STAR 9200 8.4 9.7 87 11.3 9.2 123 KIRWIN 9550 5.8 4.6 126 7.1 4.5 158 MARQUETTE 8760 2.9 -M * 7.2 4.4 164 SYLVAN LAKE 8420 5.0 7.3 68 9.4 8.0 118 SYLVAN ROAD 7120 3.6 4.2 86 6.7 7.5 89 YOUNTS PEAK 8350 5.0 5.5 91 6.3 5.8 109 ----- ----- Basin wide percent of average 95 122 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 1.9 116 4.1 3.6 114 BIG GOOSE 7990 4.4 2.7 163 8.2 3.4 241 BONE SPRINGS DIV 9350 7.9 5.8 136 7.5 5.3 142 BURGESS JUNCTION 7880 5.2 3.8 137 8.0 4.6 174 CLOUD PEAK RESERVOIR 9860 6.3 4.1 154 8.1 5.2 156 DOME LAKE 8880 5.2 4.6 113 8.6 5.3 162 GRAVE SPRINGS 8550 2.6 2.8 93 4.7 3.8 124 HANSEN SAWMILL 8360 2.6 2.3 113 4.4 3.4 129 LITTLE GOOSE 8870 5.3 -M * 9.1 -M * MIDDLE POWDER 7760 3.7 3.9 95 6.6 5.3 125 POWDER RIVER PASS 9480 4.4 3.7 119 6.1 4.5 136 SOLDIER PARK 8720 4.0 -M * 5.7 -M * SUCKER CREEK 8880 6.9 3.5 197 8.1 4.9 165 TIE CREEK 6870 3.2 1.2 267 8.4 4.0 210 ----- ----- Basin wide percent of average 135 155 BELLE FOURCHE BLIND PARK 6890 2.1 2.2 95 3.1 4.8 65 COLE CANYON 5910 1.7 2.3 74 3.4 3.2 106 NORTH RAPID CREEK 6130 2.8 2.0 140 2.6 4.1 63 ----- ----- Basin wide percent of average 102 75 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 8.6 -M * 10.3 -M * CINNABAR PARK 9574 5.2 6.4 81 8.0 7.6 105 COLUMBINE 9160 4.9 5.9 83 7.0 7.4 95 DIVIDE PEAK 8880 6.0 5.8 103 9.4 7.0 134 ELK RIVER 8700 4.3 3.8 113 6.1 5.9 103 JOE WRIGHT 10120 5.3 6.9 77 8.9 8.6 103 NORTH FRENCH CREEK 10130 6.3 8.9 71 7.4 8.3 89 OLD BATTLE 10000 9.1 10.3 88 11.3 10.6 107 SAGE CREEK BASIN 7850 5.6 3.4 165 5.0 4.0 125 SOUTH BRUSH CREEK 8440 2.3 3.3 70 4.8 5.7 84 TOWER 10500 9.2 14.3 64 11.4 12.1 94 WEBBER SPRINGS 9250 6.6 7.6 87 9.9 8.8 112 WILLOW CREEK PASS 9540 3.6 4.0 90 4.7 4.8 98 ----- ----- Basin wide percent of average 85 103 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.8 6.9 70 7.1 7.0 101 CASPER MTN. 7900 5.9 5.1 116 8.9 5.7 156 DEADMAN HILL 10220 7.7 5.5 140 7.8 5.8 134 DEER PARK 9700 3.7 4.9 76 6.9 7.8 88 LAPRELE CREEK 8375 2.5 3.6 69 5.1 4.7 109 RENO HILL 8400 5.4 4.7 115 7.1 5.5 129 ROACH 9700 5.9 4.9 120 8.1 5.9 137 SAND LAKE 10050 8.4 10.4 81 9.0 8.0 112 SOUTH PASS 9040 4.4 5.7 77 5.7 6.7 85 WINDY PEAK 7900 2.3 2.6 88 4.0 4.1 98 ----- ----- Basin wide percent of average 94 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.0 2.2 182 5.2 4.9 106 DIVIDE PEAK 8880 6.0 5.8 103 9.4 7.0 134 OLD BATTLE 10000 9.1 10.3 88 11.3 10.6 107 SANDSTONE RS 8150 2.7 2.9 93 4.9 6.1 80 WHISKEY PARK 8950 5.5 7.0 79 9.3 8.9 104 ----- ----- Basin wide percent of average 97 107 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.1 4.6 67 4.0 4.7 85 BLIND BULL SUM 8650 5.0 8.3 60 5.5 7.4 74 EAST RIM DIVIDE 7930 2.7 3.8 71 4.3 3.9 110 ELKHART PARK G.S. 9400 3.4 4.1 83 5.2 4.9 106 GROS VENTRE SUMMIT 8750 3.2 4.5 71 4.7 4.7 100 GUNSIGHT PASS 9820 3.9 -M * 5.4 -M * KENDALL R.S. 7740 3.6 3.9 92 5.2 4.6 113 LOOMIS PARK 8240 3.4 5.1 67 5.8 5.6 104 NEW FORK LAKE 8340 3.5 3.3 106 4.7 4.2 112 POCKET CREEK 9360 2.4 -M * 3.8 -M * SNIDER BASIN 8060 2.7 4.3 63 3.9 5.1 76 SPRING CREEK DIVIDE 9000 5.2 8.1 64 6.9 8.4 82 TRIPLE PEAK 8500 5.5 7.5 73 7.9 7.4 107 ----- ----- Basin wide percent of average 72 95 LOWER GREEN RIVER HAMS FORK 7840 2.4 3.1 77 4.4 4.0 110 HEWINTA 9519 2.5 2.5 100 5.3 5.4 98 HICKERSON PARK 9145 3.5 1.7 206 6.7 3.4 197 HOLE-IN-ROCK 9150 1.9 1.7 112 5.8 3.2 181 INDIAN CREEK 9425 5.6 7.8 72 6.6 8.0 82 KELLEY R.S. 8180 3.4 4.9 69 5.9 6.5 91 STEEL CREEK PARK 10200 3.1 4.5 69 6.0 5.7 105 ----- ----- Basin wide percent of average 85 112 UPPER BEAR RIVER BUG LAKE 7950 3.9 4.8 81 6.4 6.4 100 HAYDEN FORK 9212 2.8 3.6 78 7.3 6.9 106 KELLEY R.S. 8180 3.4 4.9 69 5.9 6.5 91 LILY LAKE 9156 2.2 3.4 65 5.4 6.3 86 MONTE CRISTO 8960 5.1 6.2 82 7.0 8.3 84 SALT RIVER SUMMIT 7760 2.4 3.2 75 4.2 5.7 74 TRIAL LAKE 9992 4.5 6.5 69 5.4 7.6 71 ----- ----- Basin wide percent of average 75 87 ----------------------------------------------------------------------------- -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 1971-2000. 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.