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 1 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.1 4.1 124 8.4 6.1 138 COTTONWOOD CREEK 7670 3.5 4.7 74 8.1 8.0 101 GRAND TARGHEE 9260 10.3 -M * 9.6 -M * GRANITE CREEK 6770 3.6 3.4 106 5.6 5.4 104 GRASSY LAKE 7265 5.4 7.7 70 10.5 9.6 109 GROS VENTRE SUMMIT 8750 3.0 3.9 77 4.5 4.3 105 GUNSIGHT PASS 9820 3.8 -M * 5.2 -M * LEWIS LAKE DIVIDE 7850 6.3 7.7 82 11.3 9.9 114 PHILLIPS BENCH 8200 4.7 6.4 73 7.1 7.4 96 SALT RIVER SUMMIT 7760 2.3 2.6 88 4.2 5.0 84 SNAKE RIVER STATION 6920 4.3 4.0 108 8.7 6.4 136 SPRING CREEK DIVIDE 9000 5.0 6.8 74 6.7 7.3 92 THUMB DIVIDE 7980 4.3 4.0 108 7.0 5.4 130 TOGWOTEE PASS 9580 6.3 7.0 90 8.1 7.3 111 TWO OCEAN PLATEAU 9240 11.1 8.3 134 9.8 8.2 120 WILLOW CREEK 8380 5.3 7.7 69 10.6 9.4 113 ----- ----- Basin wide percent of average 90 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.4 7.0 106 7.8 5.9 132 BLACK BEAR 8170 9.0 9.6 94 11.5 10.5 110 CANYON 7870 3.1 3.2 97 5.2 4.8 108 FISHER CREEK 9100 10.1 9.1 111 11.9 9.8 121 MADISON PLATEAU 7750 6.0 6.1 98 9.9 7.2 138 NORTHEAST ENTRANCE 7350 1.9 2.5 76 4.3 4.0 108 PARKER PEAK 9400 7.3 6.7 109 9.3 5.5 169 SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128 THUMB DIVIDE 7980 4.3 4.0 108 7.0 5.4 130 TWO OCEAN PLATEAU 9240 11.1 8.3 134 9.8 8.2 120 WHISKEY CREEK 6800 4.3 3.8 113 7.8 5.9 132 WHITE MILL 8700 5.6 6.6 85 7.9 7.7 103 WOLVERINE 7650 4.3 3.0 143 6.0 4.5 133 ----- ----- Basin wide percent of average 104 124 WIND RIVER BURROUGHS CREEK 8750 3.5 3.8 92 4.5 4.9 92 CASTLE CREEK 8400 1.9 -M * 3.0 -M * COLD SPRINGS 9630 2.8 3.1 90 4.1 4.2 98 DEER PARK 9700 3.1 4.5 69 6.2 7.1 87 HOBBS PARK 10100 5.4 5.3 102 5.3 4.6 115 LITTLE WARM 9370 2.1 3.4 62 4.4 4.6 96 SOUTH PASS 9040 3.9 4.9 80 5.2 6.0 87 ST. LAWRENCE ALT 8620 1.3 2.7 48 2.9 3.5 83 TOGWOTEE PASS 9580 6.3 7.0 90 8.1 7.3 111 TOWNSEND CREEK 8700 2.3 3.0 77 4.6 4.5 102 ----- ----- Basin wide percent of average 81 97 BIGHORN BASIN BALD MTN. 9380 6.8 5.9 115 6.7 5.3 126 BEAR TRAP MEADOW 8200 1.9 1.6 119 3.8 3.4 112 BLACKWATER 9780 9.7 7.8 124 9.4 7.2 131 BONE SPRINGS DIV 9350 7.3 5.3 138 7.3 4.9 149 EVENING STAR 9200 8.1 8.5 95 11.1 8.2 135 GRAVE SPRINGS 8550 2.4 2.7 89 4.4 3.6 122 KIRWIN 9550 5.4 4.2 129 6.7 4.1 163 MARQUETTE 8760 1.6 -M * 6.0 4.1 146 MIDDLE POWDER 7760 3.3 3.5 94 6.6 4.9 135 OWL CREEK 8975 1.8 1.9 95 2.9 2.2 132 POWDER RIVER PASS 9480 4.2 3.3 127 5.6 4.1 137 SHELL CREEK 9580 7.3 5.1 143 6.7 4.5 149 SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128 SYLVAN ROAD 7120 3.5 3.5 100 6.2 6.6 94 TIMBER CREEK 7950 2.1 2.3 91 5.5 3.0 183 YOUNTS PEAK 8350 4.9 4.7 104 6.2 5.2 119 ----- ----- Basin wide percent of average 110 133 SHOSHONE RIVER BLACKWATER 9780 9.7 7.8 124 9.4 7.2 131 EVENING STAR 9200 8.1 8.5 95 11.1 8.2 135 KIRWIN 9550 5.4 4.2 129 6.7 4.1 163 MARQUETTE 8760 1.6 -M * 6.0 4.1 146 SYLVAN LAKE 8420 4.9 6.4 77 9.1 7.1 128 SYLVAN ROAD 7120 3.5 3.5 100 6.2 6.6 94 YOUNTS PEAK 8350 4.9 4.7 104 6.2 5.2 119 ----- ----- Basin wide percent of average 104 129 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.9 1.6 119 3.8 3.4 112 BIG GOOSE 7990 3.9 2.3 170 7.7 3.0 257 BONE SPRINGS DIV 9350 7.3 5.3 138 7.3 4.9 149 BURGESS JUNCTION 7880 4.3 3.5 123 7.3 4.2 174 CLOUD PEAK RESERVOIR 9860 5.8 3.8 153 7.4 4.9 151 DOME LAKE 8880 5.2 4.1 127 8.2 4.9 167 GRAVE SPRINGS 8550 2.4 2.7 89 4.4 3.6 122 HANSEN SAWMILL 8360 2.5 2.0 125 4.3 3.2 134 LITTLE GOOSE 8870 4.8 -M * 8.6 -M * MIDDLE POWDER 7760 3.3 3.5 94 6.6 4.9 135 POWDER RIVER PASS 9480 4.2 3.3 127 5.6 4.1 137 SOLDIER PARK 8720 3.7 -M * 5.6 -M * SUCKER CREEK 8880 6.1 3.2 191 7.3 4.5 162 TIE CREEK 6870 2.3 1.2 192 7.4 3.7 200 ----- ----- Basin wide percent of average 135 157 BELLE FOURCHE BLIND PARK 6890 2.0 2.0 100 2.9 4.5 64 COLE CANYON 5910 1.3 2.1 62 3.0 3.0 100 NORTH RAPID CREEK 6130 2.5 1.7 147 2.5 3.8 66 ----- ----- Basin wide percent of average 100 74 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 8.0 -M * 9.8 -M * CINNABAR PARK 9574 4.4 5.6 79 7.2 6.7 107 COLUMBINE 9160 4.5 5.0 90 6.9 6.4 108 DIVIDE PEAK 8880 4.9 5.1 96 8.2 6.2 132 ELK RIVER 8700 4.0 3.1 129 6.0 5.2 115 JOE WRIGHT 10120 4.2 6.3 67 8.3 7.7 108 NORTH FRENCH CREEK 10130 5.9 7.9 75 7.0 7.5 93 OLD BATTLE 10000 8.3 9.0 92 10.5 9.3 113 SAGE CREEK BASIN 7850 3.5 3.0 117 4.6 3.6 128 SOUTH BRUSH CREEK 8440 2.1 2.9 72 4.8 5.2 92 TOWER 10500 8.5 12.6 67 11.0 10.6 104 WEBBER SPRINGS 9250 5.7 6.6 86 9.0 7.8 115 WILLOW CREEK PASS 9540 2.5 3.6 69 4.5 4.4 102 ----- ----- Basin wide percent of average 83 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.1 6.0 68 6.2 6.2 100 CASPER MTN. 7900 4.7 4.6 102 8.0 5.2 154 DEADMAN HILL 10220 6.9 5.0 138 7.0 5.3 132 DEER PARK 9700 3.1 4.5 69 6.2 7.1 87 LAPRELE CREEK 8375 2.2 3.2 69 4.7 4.3 109 RENO HILL 8400 4.7 4.3 109 6.4 5.1 125 ROACH 9700 5.1 4.3 119 7.3 5.2 140 SAND LAKE 10050 7.5 9.2 82 8.0 7.2 111 SOUTH PASS 9040 3.9 4.9 80 5.2 6.0 87 WINDY PEAK 7900 2.0 2.3 87 3.6 3.7 97 ----- ----- Basin wide percent of average 92 113 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.9 1.9 205 5.0 4.4 114 DIVIDE PEAK 8880 4.9 5.1 96 8.2 6.2 132 OLD BATTLE 10000 8.3 9.0 92 10.5 9.3 113 SANDSTONE RS 8150 2.3 2.4 96 4.6 5.5 84 WHISKEY PARK 8950 5.2 6.1 85 8.9 7.8 114 ----- ----- Basin wide percent of average 100 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.3 4.0 82 4.1 4.3 95 BLIND BULL SUM 8650 4.8 7.1 68 5.2 6.4 81 EAST RIM DIVIDE 7930 2.2 3.2 69 4.1 3.5 117 ELKHART PARK G.S. 9400 3.1 3.5 89 4.9 4.4 111 GROS VENTRE SUMMIT 8750 3.0 3.9 77 4.5 4.3 105 GUNSIGHT PASS 9820 3.8 -M * 5.2 -M * KENDALL R.S. 7740 3.4 3.2 106 5.3 4.1 129 LOOMIS PARK 8240 3.4 4.4 77 5.7 4.9 116 NEW FORK LAKE 8340 3.1 2.8 111 4.4 3.8 116 POCKET CREEK 9360 2.7 -M * 3.9 -M * SNIDER BASIN 8060 2.6 3.6 72 3.8 4.5 84 SPRING CREEK DIVIDE 9000 5.0 6.8 74 6.7 7.3 92 TRIPLE PEAK 8500 5.3 6.3 84 7.6 6.5 117 ----- ----- Basin wide percent of average 80 104 LOWER GREEN RIVER HAMS FORK 7840 2.3 2.5 92 4.3 3.5 123 HEWINTA 9519 2.1 2.2 95 5.1 4.9 104 HICKERSON PARK 9145 2.4 1.5 160 5.9 3.2 184 HOLE-IN-ROCK 9150 2.1 1.5 140 5.3 3.0 177 INDIAN CREEK 9425 5.4 6.7 81 6.1 7.0 87 KELLEY R.S. 8180 3.3 4.2 79 5.9 5.7 104 STEEL CREEK PARK 10200 3.0 4.0 75 5.7 5.2 110 ----- ----- Basin wide percent of average 91 118 UPPER BEAR RIVER BUG LAKE 7950 3.7 4.1 90 6.1 5.7 107 HAYDEN FORK 9212 2.8 3.1 90 7.2 6.1 118 KELLEY R.S. 8180 3.3 4.2 79 5.9 5.7 104 LILY LAKE 9156 2.2 2.9 76 5.3 5.7 93 MONTE CRISTO 8960 4.5 5.2 87 6.6 7.3 90 SALT RIVER SUMMIT 7760 2.3 2.6 88 4.2 5.0 84 TRIAL LAKE 9992 4.6 5.6 82 5.5 6.7 82 ----- ----- Basin wide percent of average 84 97 ----------------------------------------------------------------------------- -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.