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 6 , 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 4.8 104 8.7 6.9 126 COTTONWOOD CREEK 7670 3.7 5.5 67 8.5 8.9 96 GRAND TARGHEE 9260 10.4 -M * 9.5 -M * GRANITE CREEK 6770 3.5 4.1 85 5.4 6.1 89 GRASSY LAKE 7265 5.2 8.8 59 10.2 10.8 94 GROS VENTRE SUMMIT 8750 3.2 4.4 73 4.7 4.6 102 GUNSIGHT PASS 9820 3.8 -M * 5.2 -M * LEWIS LAKE DIVIDE 7850 6.2 8.9 70 10.9 11.2 97 PHILLIPS BENCH 8200 4.5 7.4 61 7.1 8.4 85 SALT RIVER SUMMIT 7760 2.3 3.1 74 4.0 5.6 71 SNAKE RIVER STATION 6920 4.2 4.7 89 8.8 7.2 122 SPRING CREEK DIVIDE 9000 5.1 7.9 65 6.8 8.2 83 THUMB DIVIDE 7980 4.1 4.6 89 6.8 6.0 113 TOGWOTEE PASS 9580 6.6 7.8 85 8.4 8.1 104 TWO OCEAN PLATEAU 9240 11.3 9.2 123 9.7 9.1 107 WILLOW CREEK 8380 5.5 8.8 62 10.9 10.4 105 ----- ----- Basin wide percent of average 78 99 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.7 7.8 99 8.1 6.6 123 BLACK BEAR 8170 9.1 11.0 83 11.6 11.7 99 CANYON 7870 3.4 3.8 89 5.2 5.3 98 FISHER CREEK 9100 10.4 10.7 97 12.1 11.0 110 MADISON PLATEAU 7750 6.0 7.1 85 9.9 8.2 121 NORTHEAST ENTRANCE 7350 2.3 3.0 77 4.5 4.4 102 PARKER PEAK 9400 7.4 7.4 100 9.3 6.0 155 SYLVAN LAKE 8420 5.0 7.2 69 9.4 7.8 121 THUMB DIVIDE 7980 4.1 4.6 89 6.8 6.0 113 TWO OCEAN PLATEAU 9240 11.3 9.2 123 9.7 9.1 107 WHISKEY CREEK 6800 4.3 4.5 96 7.8 6.6 118 WHITE MILL 8700 5.8 7.5 77 8.0 8.6 93 WOLVERINE 7650 4.3 3.4 126 6.0 5.0 120 ----- ----- Basin wide percent of average 93 113 WIND RIVER BURROUGHS CREEK 8750 3.5 4.5 78 4.5 5.4 83 CASTLE CREEK 8400 2.1 -M * 3.1 -M * COLD SPRINGS 9630 3.2 3.4 94 4.5 4.5 100 DEER PARK 9700 3.7 4.8 77 6.8 7.7 88 HOBBS PARK 10100 6.2 5.8 107 6.2 4.9 127 LITTLE WARM 9370 2.7 3.8 71 4.7 5.0 94 SOUTH PASS 9040 4.2 5.6 75 5.5 6.6 83 ST. LAWRENCE ALT 8620 1.9 2.8 68 3.4 3.7 92 TOGWOTEE PASS 9580 6.6 7.8 85 8.4 8.1 104 TOWNSEND CREEK 8700 3.1 3.1 100 5.8 4.8 121 ----- ----- Basin wide percent of average 84 98 BIGHORN BASIN BALD MTN. 9380 7.4 6.5 114 7.0 5.8 121 BEAR TRAP MEADOW 8200 2.0 1.9 105 3.8 3.6 106 BLACKWATER 9780 10.0 8.8 114 9.6 7.9 122 BONE SPRINGS DIV 9350 7.9 5.7 139 7.4 5.3 140 EVENING STAR 9200 8.2 9.5 86 11.2 9.0 124 GRAVE SPRINGS 8550 2.5 2.8 89 4.6 3.8 121 KIRWIN 9550 5.7 4.5 127 6.9 4.4 157 MARQUETTE 8760 2.7 -M * 7.1 4.3 165 MIDDLE POWDER 7760 3.5 3.8 92 6.3 5.2 121 OWL CREEK 8975 2.1 2.0 105 3.0 2.3 130 POWDER RIVER PASS 9480 4.4 3.7 119 5.9 4.4 134 SHELL CREEK 9580 7.5 5.4 139 7.1 4.9 145 SYLVAN LAKE 8420 5.0 7.2 69 9.4 7.8 121 SYLVAN ROAD 7120 3.6 4.1 88 6.5 7.3 89 TIMBER CREEK 7950 2.4 2.5 96 5.9 3.1 190 YOUNTS PEAK 8350 4.9 5.4 91 6.2 5.7 109 ----- ----- Basin wide percent of average 104 127 SHOSHONE RIVER BLACKWATER 9780 10.0 8.8 114 9.6 7.9 122 EVENING STAR 9200 8.2 9.5 86 11.2 9.0 124 KIRWIN 9550 5.7 4.5 127 6.9 4.4 157 MARQUETTE 8760 2.7 -M * 7.1 4.3 165 SYLVAN LAKE 8420 5.0 7.2 69 9.4 7.8 121 SYLVAN ROAD 7120 3.6 4.1 88 6.5 7.3 89 YOUNTS PEAK 8350 4.9 5.4 91 6.2 5.7 109 ----- ----- Basin wide percent of average 95 123 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.0 1.9 105 3.8 3.6 106 BIG GOOSE 7990 4.2 2.7 156 8.0 3.3 242 BONE SPRINGS DIV 9350 7.9 5.7 139 7.4 5.3 140 BURGESS JUNCTION 7880 5.1 3.7 138 7.8 4.5 173 CLOUD PEAK RESERVOIR 9860 6.2 4.1 151 7.6 5.2 146 DOME LAKE 8880 5.1 4.5 113 8.6 5.2 165 GRAVE SPRINGS 8550 2.5 2.8 89 4.6 3.8 121 HANSEN SAWMILL 8360 2.5 2.2 114 4.3 3.4 126 LITTLE GOOSE 8870 5.1 -M * 8.9 -M * MIDDLE POWDER 7760 3.5 3.8 92 6.3 5.2 121 POWDER RIVER PASS 9480 4.4 3.7 119 5.9 4.4 134 SOLDIER PARK 8720 3.9 -M * 5.7 -M * SUCKER CREEK 8880 6.8 3.5 194 7.8 4.8 162 TIE CREEK 6870 3.0 1.2 250 8.1 3.9 208 ----- ----- Basin wide percent of average 134 152 BELLE FOURCHE BLIND PARK 6890 2.0 2.2 91 3.1 4.7 66 COLE CANYON 5910 1.5 2.2 68 3.4 3.1 110 NORTH RAPID CREEK 6130 2.6 1.9 137 2.5 4.0 62 ----- ----- Basin wide percent of average 97 76 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 8.4 -M * 10.0 -M * CINNABAR PARK 9574 5.1 6.3 81 7.8 7.4 105 COLUMBINE 9160 4.9 5.7 86 6.9 7.2 96 DIVIDE PEAK 8880 5.9 5.7 104 9.2 6.8 135 ELK RIVER 8700 4.2 3.7 114 5.9 5.8 102 JOE WRIGHT 10120 4.7 6.8 69 8.8 8.4 105 NORTH FRENCH CREEK 10130 6.3 8.7 72 7.3 8.2 89 OLD BATTLE 10000 8.9 10.1 88 11.1 10.4 107 SAGE CREEK BASIN 7850 5.5 3.3 167 5.2 4.0 130 SOUTH BRUSH CREEK 8440 1.9 3.2 59 4.0 5.6 71 TOWER 10500 9.1 14.0 65 11.2 11.8 95 WEBBER SPRINGS 9250 6.6 7.5 88 9.8 8.6 114 WILLOW CREEK PASS 9540 3.3 3.9 85 4.7 4.7 100 ----- ----- Basin wide percent of average 84 103 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.6 6.7 69 6.9 6.9 100 CASPER MTN. 7900 6.0 5.0 120 8.9 5.6 159 DEADMAN HILL 10220 7.4 5.5 135 7.7 5.7 135 DEER PARK 9700 3.7 4.8 77 6.8 7.7 88 LAPRELE CREEK 8375 2.4 3.5 69 5.0 4.6 109 RENO HILL 8400 5.4 4.7 115 6.9 5.5 125 ROACH 9700 5.9 4.8 123 7.9 5.8 136 SAND LAKE 10050 8.2 10.2 80 8.7 7.9 110 SOUTH PASS 9040 4.2 5.6 75 5.5 6.6 83 WINDY PEAK 7900 2.2 2.5 88 4.1 4.0 102 ----- ----- Basin wide percent of average 94 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.0 2.1 190 5.0 4.8 104 DIVIDE PEAK 8880 5.9 5.7 104 9.2 6.8 135 OLD BATTLE 10000 8.9 10.1 88 11.1 10.4 107 SANDSTONE RS 8150 2.6 2.8 93 5.0 6.0 83 WHISKEY PARK 8950 5.6 6.9 81 9.2 8.8 105 ----- ----- Basin wide percent of average 98 107 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.9 4.5 64 3.9 4.7 83 BLIND BULL SUM 8650 4.9 8.1 60 5.4 7.2 75 EAST RIM DIVIDE 7930 2.7 3.7 73 4.4 3.9 113 ELKHART PARK G.S. 9400 3.1 4.0 78 4.9 4.8 102 GROS VENTRE SUMMIT 8750 3.2 4.4 73 4.7 4.6 102 GUNSIGHT PASS 9820 3.8 -M * 5.2 -M * KENDALL R.S. 7740 3.6 3.8 95 5.2 4.5 116 LOOMIS PARK 8240 3.4 5.0 68 5.7 5.5 104 NEW FORK LAKE 8340 3.3 3.2 103 4.6 4.1 112 POCKET CREEK 9360 2.1 -M * 3.7 -M * SNIDER BASIN 8060 2.6 4.2 62 3.7 5.0 74 SPRING CREEK DIVIDE 9000 5.1 7.9 65 6.8 8.2 83 TRIPLE PEAK 8500 5.5 7.3 75 7.7 7.3 105 ----- ----- Basin wide percent of average 72 95 LOWER GREEN RIVER HAMS FORK 7840 2.3 3.0 77 4.4 3.9 113 HEWINTA 9519 2.3 2.4 96 5.1 5.3 96 HICKERSON PARK 9145 3.2 1.7 188 6.3 3.4 185 HOLE-IN-ROCK 9150 1.7 1.7 100 5.7 3.1 184 INDIAN CREEK 9425 5.4 7.6 71 6.1 7.8 78 KELLEY R.S. 8180 3.3 4.8 69 5.7 6.4 89 STEEL CREEK PARK 10200 3.0 4.4 68 6.0 5.6 107 ----- ----- Basin wide percent of average 83 111 UPPER BEAR RIVER BUG LAKE 7950 3.8 4.7 81 6.3 6.3 100 HAYDEN FORK 9212 2.9 3.5 83 7.2 6.8 106 KELLEY R.S. 8180 3.3 4.8 69 5.7 6.4 89 LILY LAKE 9156 2.0 3.3 61 5.4 6.2 87 MONTE CRISTO 8960 5.1 6.0 85 6.9 8.1 85 SALT RIVER SUMMIT 7760 2.3 3.1 74 4.0 5.6 71 TRIAL LAKE 9992 4.5 6.4 70 5.4 7.4 73 ----- ----- 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.