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 14 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.2 5.8 90 8.7 8.0 109 COTTONWOOD CREEK 7670 3.9 6.8 57 8.5 10.3 83 GRAND TARGHEE 9260 10.9 -M * 10.1 -M * GRANITE CREEK 6770 3.6 5.1 71 5.5 7.2 76 GRASSY LAKE 7265 5.6 10.6 53 10.8 12.8 84 GROS VENTRE SUMMIT 8750 3.3 5.2 63 4.7 5.2 90 GUNSIGHT PASS 9820 4.1 -M * 5.5 -M * LEWIS LAKE DIVIDE 7850 6.4 10.6 60 11.4 13.1 87 PHILLIPS BENCH 8200 4.9 9.1 54 7.5 10.0 75 SALT RIVER SUMMIT 7760 2.9 3.8 76 4.5 6.6 68 SNAKE RIVER STATION 6920 4.4 5.7 77 8.9 8.4 106 SPRING CREEK DIVIDE 9000 5.3 9.4 56 7.0 9.7 72 THUMB DIVIDE 7980 4.4 5.5 80 7.1 6.9 103 TOGWOTEE PASS 9580 6.8 9.0 76 8.6 9.3 92 TWO OCEAN PLATEAU 9240 11.1 10.5 106 10.1 10.5 96 WILLOW CREEK 8380 5.8 10.5 55 11.2 12.0 93 ----- ----- Basin wide percent of average 68 88 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.9 8.9 89 8.2 7.7 106 BLACK BEAR 8170 9.1 13.1 69 23.9 13.5 177 CANYON 7870 3.3 4.5 73 5.3 6.0 88 FISHER CREEK 9100 10.7 12.5 86 12.5 12.9 97 MADISON PLATEAU 7750 6.0 8.5 71 10.0 9.6 104 NORTHEAST ENTRANCE 7350 2.3 3.6 64 4.5 5.1 88 PARKER PEAK 9400 7.8 8.4 93 9.6 6.7 143 SYLVAN LAKE 8420 5.2 8.2 63 9.5 8.9 107 THUMB DIVIDE 7980 4.4 5.5 80 7.1 6.9 103 TWO OCEAN PLATEAU 9240 11.1 10.5 106 10.1 10.5 96 WHISKEY CREEK 6800 4.3 5.5 78 7.7 7.6 101 WHITE MILL 8700 5.9 8.7 68 8.1 10.0 81 WOLVERINE 7650 4.6 4.1 112 6.0 5.7 105 ----- ----- Basin wide percent of average 81 110 WIND RIVER BURROUGHS CREEK 8750 3.7 5.2 71 4.6 6.2 74 CASTLE CREEK 8400 2.1 -M * 3.1 -M * COLD SPRINGS 9630 3.3 3.9 85 4.6 4.9 94 DEER PARK 9700 3.9 5.6 70 7.1 8.7 82 HOBBS PARK 10100 6.3 6.5 97 6.3 5.4 117 LITTLE WARM 9370 2.8 4.3 65 4.9 5.5 89 SOUTH PASS 9040 4.5 6.7 67 5.8 7.4 78 ST. LAWRENCE ALT 8620 2.1 3.2 66 3.5 4.0 88 TOGWOTEE PASS 9580 6.8 9.0 76 8.6 9.3 92 TOWNSEND CREEK 8700 3.2 3.6 89 5.9 5.2 113 ----- ----- Basin wide percent of average 76 91 BIGHORN BASIN BALD MTN. 9380 7.7 7.5 103 6.8 6.6 103 BEAR TRAP MEADOW 8200 2.2 2.1 105 4.1 3.9 105 BLACKWATER 9780 10.2 9.9 103 9.8 9.0 109 BONE SPRINGS DIV 9350 8.1 6.3 129 7.5 5.9 127 EVENING STAR 9200 8.5 11.0 77 11.4 10.2 112 GRAVE SPRINGS 8550 2.7 3.1 87 4.7 4.1 115 KIRWIN 9550 5.8 5.0 116 7.0 4.9 143 MARQUETTE 8760 2.8 -M * 7.1 4.6 154 MIDDLE POWDER 7760 3.7 4.4 84 6.6 5.7 116 OWL CREEK 8975 2.1 2.2 95 3.0 2.5 120 POWDER RIVER PASS 9480 4.5 4.1 110 6.0 4.9 122 SHELL CREEK 9580 7.6 6.0 127 7.0 5.4 130 SYLVAN LAKE 8420 5.2 8.2 63 9.5 8.9 107 SYLVAN ROAD 7120 3.7 4.8 77 6.9 8.3 83 TIMBER CREEK 7950 2.5 2.6 96 5.9 3.4 174 YOUNTS PEAK 8350 5.1 6.1 84 6.4 6.4 100 ----- ----- Basin wide percent of average 96 116 SHOSHONE RIVER BLACKWATER 9780 10.2 9.9 103 9.8 9.0 109 EVENING STAR 9200 8.5 11.0 77 11.4 10.2 112 KIRWIN 9550 5.8 5.0 116 7.0 4.9 143 MARQUETTE 8760 2.8 -M * 7.1 4.6 154 SYLVAN LAKE 8420 5.2 8.2 63 9.5 8.9 107 SYLVAN ROAD 7120 3.7 4.8 77 6.9 8.3 83 YOUNTS PEAK 8350 5.1 6.1 84 6.4 6.4 100 ----- ----- Basin wide percent of average 86 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.1 105 4.1 3.9 105 BIG GOOSE 7990 4.5 3.2 141 8.3 3.8 218 BONE SPRINGS DIV 9350 8.1 6.3 129 7.5 5.9 127 BURGESS JUNCTION 7880 5.2 4.2 124 8.0 5.0 160 CLOUD PEAK RESERVOIR 9860 6.3 4.5 140 8.1 5.5 147 DOME LAKE 8880 5.3 4.9 108 8.6 5.8 148 GRAVE SPRINGS 8550 2.7 3.1 87 4.7 4.1 115 HANSEN SAWMILL 8360 2.7 2.6 104 4.5 3.7 122 LITTLE GOOSE 8870 5.3 -M * 9.2 -M * MIDDLE POWDER 7760 3.7 4.4 84 6.6 5.7 116 POWDER RIVER PASS 9480 4.5 4.1 110 6.0 4.9 122 SOLDIER PARK 8720 4.0 -M * 5.8 -M * SUCKER CREEK 8880 7.0 4.0 175 8.2 5.4 152 TIE CREEK 6870 3.2 1.5 213 8.5 4.3 198 ----- ----- Basin wide percent of average 123 143 BELLE FOURCHE BLIND PARK 6890 2.3 2.4 96 3.2 5.2 62 COLE CANYON 5910 1.8 2.6 69 3.4 3.4 100 NORTH RAPID CREEK 6130 2.9 2.4 121 2.7 4.4 61 ----- ----- Basin wide percent of average 95 72 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 9.2 -M * 10.8 -M * CINNABAR PARK 9574 5.4 7.3 74 8.4 8.5 99 COLUMBINE 9160 5.3 6.9 77 7.5 8.5 88 DIVIDE PEAK 8880 6.1 6.7 91 9.5 7.8 122 ELK RIVER 8700 4.6 4.7 98 6.5 6.7 97 JOE WRIGHT 10120 6.2 7.6 82 9.3 9.5 98 NORTH FRENCH CREEK 10130 6.7 10.2 66 7.7 9.4 82 OLD BATTLE 10000 9.5 11.6 82 11.8 12.1 98 SAGE CREEK BASIN 7850 5.7 3.9 146 5.1 4.6 111 SOUTH BRUSH CREEK 8440 -M 3.8 * -M 6.3 * TOWER 10500 9.6 16.1 60 11.9 13.7 87 WEBBER SPRINGS 9250 6.7 8.8 76 10.1 10.0 101 WILLOW CREEK PASS 9540 3.9 4.5 87 4.4 5.3 83 ----- ----- Basin wide percent of average 79 96 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 4.9 7.9 62 7.1 7.9 90 CASPER MTN. 7900 6.1 5.7 107 8.8 6.2 142 DEADMAN HILL 10220 8.7 6.1 143 7.9 6.4 123 DEER PARK 9700 3.9 5.6 70 7.1 8.7 82 LAPRELE CREEK 8375 2.7 4.1 66 5.2 5.0 104 RENO HILL 8400 5.5 5.3 104 7.2 6.0 120 ROACH 9700 6.0 5.5 109 8.2 6.6 124 SAND LAKE 10050 8.6 11.7 74 9.2 9.0 102 SOUTH PASS 9040 4.5 6.7 67 5.8 7.4 78 WINDY PEAK 7900 2.5 2.9 86 4.1 4.5 91 ----- ----- Basin wide percent of average 87 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.9 2.6 150 5.5 5.5 100 DIVIDE PEAK 8880 6.1 6.7 91 9.5 7.8 122 OLD BATTLE 10000 9.5 11.6 82 11.8 12.1 98 SANDSTONE RS 8150 2.9 3.4 85 5.1 6.9 74 WHISKEY PARK 8950 5.9 8.0 74 9.8 10.1 97 ----- ----- Basin wide percent of average 88 98 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.4 5.3 64 4.2 5.3 79 BLIND BULL SUM 8650 5.3 9.7 55 5.7 8.5 67 EAST RIM DIVIDE 7930 2.8 4.4 64 4.4 4.4 100 ELKHART PARK G.S. 9400 3.4 4.7 72 5.1 5.4 94 GROS VENTRE SUMMIT 8750 3.3 5.2 63 4.7 5.2 90 GUNSIGHT PASS 9820 4.1 -M * 5.5 -M * KENDALL R.S. 7740 3.7 4.6 80 5.4 5.2 104 LOOMIS PARK 8240 3.6 6.0 60 5.8 6.4 91 NEW FORK LAKE 8340 3.7 3.9 95 4.7 4.7 100 POCKET CREEK 9360 2.2 -M * 4.0 -M * SNIDER BASIN 8060 2.9 5.1 57 4.0 5.9 68 SPRING CREEK DIVIDE 9000 5.3 9.4 56 7.0 9.7 72 TRIPLE PEAK 8500 5.6 8.7 64 8.0 8.5 94 ----- ----- Basin wide percent of average 64 85 LOWER GREEN RIVER HAMS FORK 7840 2.6 3.7 70 4.5 4.5 100 HEWINTA 9519 2.1 2.9 72 5.3 5.9 90 HICKERSON PARK 9145 3.0 2.0 150 6.4 3.7 173 HOLE-IN-ROCK 9150 2.2 1.9 116 5.7 3.4 168 INDIAN CREEK 9425 5.8 9.2 63 6.8 9.2 74 KELLEY R.S. 8180 3.8 5.7 67 6.3 7.5 84 STEEL CREEK PARK 10200 3.0 5.1 59 6.1 6.2 98 ----- ----- Basin wide percent of average 74 102 UPPER BEAR RIVER BUG LAKE 7950 4.2 5.7 74 6.6 7.2 92 HAYDEN FORK 9212 2.9 4.3 67 7.4 7.8 95 KELLEY R.S. 8180 3.8 5.7 67 6.3 7.5 84 LILY LAKE 9156 2.4 4.0 60 5.4 7.0 77 MONTE CRISTO 8960 5.4 7.4 73 7.3 9.4 78 SALT RIVER SUMMIT 7760 2.9 3.8 76 4.5 6.6 68 TRIAL LAKE 9992 4.6 7.6 61 5.3 8.6 62 ----- ----- Basin wide percent of average 68 79 ----------------------------------------------------------------------------- -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.