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 27 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.5 7.4 88 12.9 9.6 134 COTTONWOOD CREEK 7670 6.7 8.7 77 9.9 12.4 80 GRAND TARGHEE 9260 20.2 -M * 15.7 -M * GRANITE CREEK 6770 4.3 6.8 63 10.0 8.7 115 GRASSY LAKE 7265 10.9 13.3 82 18.7 15.7 119 GROS VENTRE SUMMIT 8750 5.9 6.3 94 7.3 6.0 122 GUNSIGHT PASS 9820 3.7 -M * 7.0 -M * LEWIS LAKE DIVIDE 7850 12.4 13.3 93 18.2 16.0 114 PHILLIPS BENCH 8200 8.9 11.5 77 13.4 12.3 109 SALT RIVER SUMMIT 7760 2.6 4.8 54 5.0 8.1 62 SNAKE RIVER STATION 6920 5.2 7.1 73 13.1 10.2 128 SPRING CREEK DIVIDE 9000 6.4 11.5 56 7.6 11.8 64 THUMB DIVIDE 7980 5.6 6.9 81 9.4 8.4 112 TOGWOTEE PASS 9580 12.1 10.7 113 13.8 11.1 124 TWO OCEAN PLATEAU 9240 17.5 12.5 140 16.1 12.5 129 WILLOW CREEK 8380 8.8 13.0 68 14.6 14.3 102 ----- ----- Basin wide percent of average 85 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.2 10.5 116 11.7 9.2 127 BLACK BEAR 8170 18.5 15.7 118 20.2 16.2 125 CANYON 7870 6.7 5.4 124 9.8 7.2 136 FISHER CREEK 9100 20.0 15.0 133 18.4 15.7 117 MADISON PLATEAU 7750 11.2 10.2 110 15.0 11.5 130 NORTHEAST ENTRANCE 7350 2.5 4.5 56 6.7 6.0 112 PARKER PEAK 9400 12.2 9.7 126 12.2 7.7 158 SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131 THUMB DIVIDE 7980 5.6 6.9 81 9.4 8.4 112 TWO OCEAN PLATEAU 9240 17.5 12.5 140 16.1 12.5 129 WHISKEY CREEK 6800 6.5 6.7 97 12.1 9.1 133 WHITE MILL 8700 12.4 10.3 120 13.0 11.9 109 WOLVERINE 7650 3.7 5.2 71 7.4 6.6 112 ----- ----- Basin wide percent of average 113 125 WIND RIVER BURROUGHS CREEK 8750 7.7 6.2 124 10.4 7.4 141 COLD SPRINGS 9630 1.9 4.4 43 4.8 5.4 89 DEER PARK 9700 4.8 6.1 79 8.2 10.2 80 HOBBS PARK 10100 4.5 7.2 62 6.1 6.1 100 LITTLE WARM 9370 3.9 5.0 78 6.5 6.3 103 SOUTH PASS 9040 4.2 7.6 55 7.2 8.6 84 ST. LAWRENCE ALT 8620 2.3 3.6 64 4.0 4.4 91 TOGWOTEE PASS 9580 12.1 10.7 113 13.8 11.1 124 TOWNSEND CREEK 8700 2.7 4.1 66 5.8 5.8 100 ----- ----- Basin wide percent of average 80 102 BIGHORN BASIN BALD MTN. 9380 6.1 9.1 67 7.1 7.8 91 BEAR TRAP MEADOW 8200 3.6 2.4 150 5.0 4.3 116 BLACKWATER 9780 11.8 11.1 106 11.2 10.2 110 BONE SPRINGS DIV 9350 6.2 7.4 84 6.9 6.8 101 EVENING STAR 9200 13.4 12.6 106 15.4 12.0 128 GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.6 111 KIRWIN 9550 6.6 5.5 120 7.9 5.6 141 MARQUETTE 8760 1.5 4.8 31 5.5 5.1 108 MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75 OWL CREEK 8975 2.5 2.5 100 4.2 2.8 150 POWDER RIVER PASS 9480 4.4 4.9 90 6.4 5.6 114 SHELL CREEK 9580 7.3 6.9 106 7.8 6.3 124 SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131 SYLVAN ROAD 7120 4.3 5.6 77 12.0 9.6 125 TIMBER CREEK 7950 1.6 2.9 55 5.5 3.6 153 YOUNTS PEAK 8350 7.5 7.2 104 10.1 7.6 133 ----- ----- Basin wide percent of average 92 118 SHOSHONE RIVER BLACKWATER 9780 11.8 11.1 106 11.2 10.2 110 EVENING STAR 9200 13.4 12.6 106 15.4 12.0 128 KIRWIN 9550 6.6 5.5 120 7.9 5.6 141 MARQUETTE 8760 1.5 4.8 31 5.5 5.1 108 SYLVAN LAKE 8420 8.9 9.6 93 13.5 10.3 131 SYLVAN ROAD 7120 4.3 5.6 77 12.0 9.6 125 YOUNTS PEAK 8350 7.5 7.2 104 10.1 7.6 133 ----- ----- Basin wide percent of average 96 125 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.6 2.4 150 5.0 4.3 116 BIG GOOSE 7990 3.8 4.0 95 6.7 4.3 156 BONE SPRINGS DIV 9350 6.2 7.4 84 6.9 6.8 101 BURGESS JUNCTION 7880 4.5 5.2 87 6.6 5.7 116 CLOUD PEAK RESERVOIR 9860 5.9 5.4 109 7.5 6.1 123 DOME LAKE 8880 4.4 5.7 77 7.8 6.5 120 GRAVE SPRINGS 8550 3.4 3.7 92 5.1 4.6 111 HANSEN SAWMILL 8360 3.0 3.0 100 5.1 4.1 124 MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75 POWDER RIVER PASS 9480 4.4 4.9 90 6.4 5.6 114 SUCKER CREEK 8880 4.8 5.0 96 6.6 6.3 105 TIE CREEK 6870 1.9 2.3 83 5.8 4.8 121 ----- ----- Basin wide percent of average 92 113 BELLE FOURCHE BLIND PARK 6890 1.8 3.2 56 3.8 5.9 64 COLE CANYON 5910 1.4 3.1 45 3.0 3.7 81 NORTH RAPID CREEK 6130 2.6 3.0 87 3.1 5.0 62 ----- ----- Basin wide percent of average 62 68 UPPER N. PLATTE RIVER COLUMBINE 9160 6.0 8.9 67 9.5 10.5 90 DIVIDE PEAK 8880 9.5 8.4 113 10.2 9.3 110 ELK RIVER 8700 6.8 6.3 108 9.4 8.1 116 JOE WRIGHT 10120 9.1 9.0 101 11.2 11.1 101 NORTH FRENCH CREEK 10130 11.7 12.3 95 12.8 11.1 115 OLD BATTLE 10000 12.0 13.7 88 14.9 14.7 101 SAGE CREEK BASIN 7850 6.8 4.9 139 8.2 5.4 152 SOUTH BRUSH CREEK 8440 5.6 4.7 119 8.8 7.3 121 TOWER 10500 11.9 19.0 63 15.2 16.5 92 WEBBER SPRINGS 9250 9.0 10.6 85 11.8 12.0 98 WILLOW CREEK PASS 9540 6.7 5.2 129 7.8 6.1 128 ----- ----- Basin wide percent of average 92 107 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.6 9.8 78 9.1 9.4 97 CASPER MTN. 7900 4.7 6.5 72 7.4 6.9 107 DEADMAN HILL 10220 7.2 7.1 101 7.3 7.3 100 DEER PARK 9700 4.8 6.1 79 8.2 10.2 80 LAPRELE CREEK 8375 1.8 4.9 37 4.7 5.8 81 RENO HILL 8400 5.3 6.2 85 6.9 6.8 101 ROACH 9700 8.0 6.7 119 10.0 7.8 128 SAND LAKE 10050 10.8 13.9 78 11.4 10.7 107 SOUTH PASS 9040 4.2 7.6 55 7.2 8.6 84 WINDY PEAK 7900 2.7 3.3 82 4.4 5.2 85 ----- ----- Basin wide percent of average 79 97 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 3.5 146 7.8 6.6 118 DIVIDE PEAK 8880 9.5 8.4 113 10.2 9.3 110 OLD BATTLE 10000 12.0 13.7 88 14.9 14.7 101 SANDSTONE RS 8150 5.9 4.6 128 9.2 8.2 112 WHISKEY PARK 8950 9.1 10.0 91 13.1 12.1 108 ----- ----- Basin wide percent of average 103 108 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.0 6.4 62 4.8 6.1 79 BLIND BULL SUM 8650 7.6 12.1 63 7.6 10.2 75 EAST RIM DIVIDE 7930 1.6 5.4 30 4.3 5.3 81 ELKHART PARK G.S. 9400 3.6 5.8 62 4.9 6.2 79 GROS VENTRE SUMMIT 8750 5.9 6.3 94 7.3 6.0 122 GUNSIGHT PASS 9820 3.7 -M * 7.0 -M * KENDALL R.S. 7740 3.1 6.0 52 5.6 6.3 89 LOOMIS PARK 8240 4.6 7.4 62 6.2 7.6 82 NEW FORK LAKE 8340 2.7 4.9 55 3.6 5.5 65 SNIDER BASIN 8060 2.5 6.3 40 4.1 7.2 57 SPRING CREEK DIVIDE 9000 6.4 11.5 56 7.6 11.8 64 TRIPLE PEAK 8500 7.2 10.8 67 10.1 10.2 99 ----- ----- Basin wide percent of average 59 80 LOWER GREEN RIVER HAMS FORK 7840 1.9 4.9 39 3.5 5.3 66 HEWINTA 9519 2.0 3.7 54 6.9 6.6 105 HICKERSON PARK 9145 1.4 2.6 54 4.1 4.0 102 HOLE-IN-ROCK 9150 1.2 2.4 50 4.7 3.7 127 INDIAN CREEK 9425 6.4 11.4 56 6.9 11.1 62 KELLEY R.S. 8180 3.8 7.0 54 6.5 9.2 71 STEEL CREEK PARK 10200 3.3 6.2 53 7.7 7.1 108 ----- ----- Basin wide percent of average 52 86 UPPER BEAR RIVER BUG LAKE 7950 3.0 7.4 41 4.9 8.5 58 HAYDEN FORK 9212 4.2 5.6 75 7.5 9.2 82 KELLEY R.S. 8180 3.8 7.0 54 6.5 9.2 71 LILY LAKE 9156 2.8 5.0 56 6.6 8.1 81 MONTE CRISTO 8960 6.5 9.8 66 8.2 11.2 73 SALT RIVER SUMMIT 7760 2.6 4.8 54 5.0 8.1 62 TRIAL LAKE 9992 5.8 9.5 61 7.8 10.3 76 ----- ----- Basin wide percent of average 58 72 ----------------------------------------------------------------------------- -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.