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 FRIDAY: DECEMBER 28 , 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 7.5 87 12.9 9.7 133 COTTONWOOD CREEK 7670 6.7 8.9 75 9.9 12.5 79 GRAND TARGHEE 9260 20.3 -M * 15.8 -M * GRANITE CREEK 6770 4.3 6.9 62 10.0 8.9 112 GRASSY LAKE 7265 11.0 13.5 81 18.8 16.0 118 GROS VENTRE SUMMIT 8750 5.9 6.4 92 7.5 6.0 125 GUNSIGHT PASS 9820 3.6 -M * 7.1 -M * LEWIS LAKE DIVIDE 7850 12.5 13.5 93 18.4 16.3 113 PHILLIPS BENCH 8200 9.0 11.7 77 13.4 12.5 107 SALT RIVER SUMMIT 7760 2.5 4.9 51 5.0 8.3 60 SNAKE RIVER STATION 6920 5.4 7.2 75 13.1 10.3 127 SPRING CREEK DIVIDE 9000 6.4 11.7 55 7.7 12.0 64 THUMB DIVIDE 7980 5.7 7.0 81 9.6 8.5 113 TOGWOTEE PASS 9580 12.1 10.9 111 13.8 11.2 123 TWO OCEAN PLATEAU 9240 17.5 12.6 139 16.1 12.7 127 WILLOW CREEK 8380 8.9 13.2 67 14.6 14.5 101 ----- ----- Basin wide percent of average 84 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.1 10.7 113 11.7 9.4 124 BLACK BEAR 8170 18.6 15.9 117 20.3 16.4 124 CANYON 7870 6.8 5.5 124 9.8 7.3 134 FISHER CREEK 9100 20.1 15.2 132 18.4 15.9 116 MADISON PLATEAU 7750 11.1 10.3 108 15.0 11.6 129 NORTHEAST ENTRANCE 7350 2.5 4.6 54 6.7 6.0 112 PARKER PEAK 9400 12.2 9.8 124 -M 7.8 * SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130 THUMB DIVIDE 7980 5.7 7.0 81 9.6 8.5 113 TWO OCEAN PLATEAU 9240 17.5 12.6 139 16.1 12.7 127 WHISKEY CREEK 6800 6.6 6.8 97 12.1 9.2 132 WHITE MILL 8700 12.4 10.4 119 -M 12.0 * WOLVERINE 7650 3.7 5.3 70 7.3 6.6 111 ----- ----- Basin wide percent of average 112 123 WIND RIVER BURROUGHS CREEK 8750 7.5 6.3 119 10.2 7.5 136 COLD SPRINGS 9630 1.8 4.4 41 4.8 5.5 87 DEER PARK 9700 4.8 6.2 77 8.1 10.3 79 HOBBS PARK 10100 4.6 7.3 63 6.1 6.1 100 LITTLE WARM 9370 4.0 5.0 80 6.5 6.3 103 SOUTH PASS 9040 -M 7.7 * 7.3 8.7 84 ST. LAWRENCE ALT 8620 2.1 3.6 58 4.0 4.4 91 TOGWOTEE PASS 9580 12.1 10.9 111 13.8 11.2 123 TOWNSEND CREEK 8700 2.3 4.2 55 5.9 5.8 102 ----- ----- Basin wide percent of average 82 101 BIGHORN BASIN BALD MTN. 9380 6.1 9.2 66 6.8 7.9 86 BEAR TRAP MEADOW 8200 3.6 2.5 144 5.0 4.3 116 BLACKWATER 9780 11.8 11.3 104 11.3 10.3 110 BONE SPRINGS DIV 9350 6.2 7.5 83 -M 6.9 * EVENING STAR 9200 13.4 12.7 106 -M 12.2 * GRAVE SPRINGS 8550 3.4 3.8 89 5.2 4.6 113 KIRWIN 9550 6.5 5.6 116 7.7 5.6 138 MARQUETTE 8760 1.4 4.8 29 5.4 5.1 106 MIDDLE POWDER 7760 4.0 5.3 75 4.9 6.5 75 OWL CREEK 8975 2.4 2.6 92 4.2 2.8 150 POWDER RIVER PASS 9480 4.4 4.9 90 6.3 5.7 111 SHELL CREEK 9580 7.3 7.0 104 7.8 6.3 124 SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130 SYLVAN ROAD 7120 4.3 5.7 75 12.0 9.7 124 TIMBER CREEK 7950 1.5 3.0 50 5.5 3.6 153 YOUNTS PEAK 8350 7.4 7.3 101 10.0 7.7 130 ----- ----- Basin wide percent of average 90 117 SHOSHONE RIVER BLACKWATER 9780 11.8 11.3 104 11.3 10.3 110 EVENING STAR 9200 13.4 12.7 106 -M 12.2 * KIRWIN 9550 6.5 5.6 116 7.7 5.6 138 MARQUETTE 8760 1.4 4.8 29 5.4 5.1 106 SYLVAN LAKE 8420 9.0 9.7 93 13.5 10.4 130 SYLVAN ROAD 7120 4.3 5.7 75 12.0 9.7 124 YOUNTS PEAK 8350 7.4 7.3 101 10.0 7.7 130 ----- ----- Basin wide percent of average 94 123 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.6 2.5 144 5.0 4.3 116 BIG GOOSE 7990 3.7 4.1 90 6.6 4.3 153 BONE SPRINGS DIV 9350 6.2 7.5 83 -M 6.9 * BURGESS JUNCTION 7880 4.4 5.3 83 6.6 5.8 114 CLOUD PEAK RESERVOIR 9860 5.8 5.5 105 7.3 6.2 118 DOME LAKE 8880 4.3 5.7 75 7.8 6.6 118 GRAVE SPRINGS 8550 3.4 3.8 89 5.2 4.6 113 HANSEN SAWMILL 8360 3.0 3.1 97 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 6.3 5.7 111 SUCKER CREEK 8880 4.7 5.0 94 6.3 6.3 100 TIE CREEK 6870 1.8 2.4 75 5.9 4.9 120 ----- ----- Basin wide percent of average 89 113 BELLE FOURCHE BLIND PARK 6890 1.6 3.2 50 3.8 5.9 64 COLE CANYON 5910 1.4 3.1 45 3.0 3.8 79 NORTH RAPID CREEK 6130 2.3 3.0 77 2.9 5.1 57 ----- ----- Basin wide percent of average 57 66 UPPER N. PLATTE RIVER COLUMBINE 9160 6.0 9.1 66 9.5 10.6 90 DIVIDE PEAK 8880 9.5 8.5 112 10.2 9.4 109 ELK RIVER 8700 6.9 6.5 106 9.3 8.2 113 JOE WRIGHT 10120 9.1 9.1 100 11.2 11.2 100 NORTH FRENCH CREEK 10130 11.7 12.5 94 12.8 11.2 114 OLD BATTLE 10000 12.1 13.8 88 14.8 14.9 99 SAGE CREEK BASIN 7850 6.9 4.9 141 8.3 5.5 151 SOUTH BRUSH CREEK 8440 5.7 4.8 119 8.8 7.3 121 TOWER 10500 12.0 19.3 62 15.1 16.7 90 WEBBER SPRINGS 9250 9.0 10.7 84 11.8 12.2 97 WILLOW CREEK PASS 9540 6.7 5.3 126 7.9 6.1 130 ----- ----- Basin wide percent of average 91 106 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.6 10.0 76 9.2 9.5 97 CASPER MTN. 7900 4.8 6.6 73 7.4 6.9 107 DEADMAN HILL 10220 7.3 7.2 101 7.5 7.4 101 DEER PARK 9700 4.8 6.2 77 8.1 10.3 79 LAPRELE CREEK 8375 1.8 5.0 36 4.8 5.8 83 RENO HILL 8400 5.4 6.2 87 7.0 6.8 103 ROACH 9700 8.2 6.8 121 10.0 7.9 127 SAND LAKE 10050 10.8 14.1 77 11.3 10.9 104 SOUTH PASS 9040 -M 7.7 * 7.3 8.7 84 WINDY PEAK 7900 2.8 3.3 85 4.5 5.3 85 ----- ----- Basin wide percent of average 82 97 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 5.1 3.6 142 7.8 6.7 116 DIVIDE PEAK 8880 9.5 8.5 112 10.2 9.4 109 OLD BATTLE 10000 12.1 13.8 88 14.8 14.9 99 SANDSTONE RS 8150 5.8 4.7 123 9.3 8.3 112 WHISKEY PARK 8950 9.2 10.1 91 13.1 12.2 107 ----- ----- Basin wide percent of average 102 107 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.9 6.5 60 4.7 6.2 76 BLIND BULL SUM 8650 7.6 12.2 62 7.6 10.3 74 EAST RIM DIVIDE 7930 1.6 5.5 29 4.3 5.4 80 ELKHART PARK G.S. 9400 3.6 5.9 61 4.9 6.3 78 GROS VENTRE SUMMIT 8750 5.9 6.4 92 7.5 6.0 125 GUNSIGHT PASS 9820 3.6 -M * 7.1 -M * KENDALL R.S. 7740 3.0 6.1 49 5.6 6.4 87 LOOMIS PARK 8240 4.4 7.5 59 6.2 7.8 79 NEW FORK LAKE 8340 2.6 5.0 52 3.6 5.5 65 SNIDER BASIN 8060 2.5 6.4 39 4.3 7.3 59 SPRING CREEK DIVIDE 9000 6.4 11.7 55 7.7 12.0 64 TRIPLE PEAK 8500 7.2 11.0 65 10.1 10.4 97 ----- ----- Basin wide percent of average 58 80 LOWER GREEN RIVER HAMS FORK 7840 1.9 5.0 38 3.5 5.4 65 HEWINTA 9519 1.9 3.7 51 6.8 6.7 101 HICKERSON PARK 9145 1.2 2.6 46 3.8 4.1 93 HOLE-IN-ROCK 9150 1.1 2.5 44 4.6 3.7 124 INDIAN CREEK 9425 6.3 11.6 54 6.9 11.3 61 KELLEY R.S. 8180 3.8 7.1 54 6.4 9.3 69 STEEL CREEK PARK 10200 3.4 6.2 55 7.8 7.2 108 ----- ----- Basin wide percent of average 51 83 UPPER BEAR RIVER BUG LAKE 7950 3.1 7.5 41 5.1 8.6 59 HAYDEN FORK 9212 4.2 5.7 74 7.6 9.4 81 KELLEY R.S. 8180 3.8 7.1 54 6.4 9.3 69 LILY LAKE 9156 2.8 5.0 56 6.9 8.2 84 MONTE CRISTO 8960 6.6 10.0 66 8.3 11.3 73 SALT RIVER SUMMIT 7760 2.5 4.9 51 5.0 8.3 60 TRIAL LAKE 9992 5.5 9.7 57 7.8 10.5 74 ----- ----- Basin wide percent of average 57 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.