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 25 , 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 7.1 92 12.8 9.3 138 COTTONWOOD CREEK 7670 6.6 8.4 79 9.8 12.0 82 GRAND TARGHEE 9260 20.1 -M * 15.8 -M * GRANITE CREEK 6770 4.3 6.5 66 10.1 8.5 119 GRASSY LAKE 7265 10.9 12.8 85 18.7 15.2 123 GROS VENTRE SUMMIT 8750 6.1 6.1 100 7.4 5.8 128 GUNSIGHT PASS 9820 3.8 -M * 7.1 -M * LEWIS LAKE DIVIDE 7850 12.2 12.9 95 18.4 15.6 118 PHILLIPS BENCH 8200 9.0 11.1 81 13.4 11.9 113 SALT RIVER SUMMIT 7760 2.7 4.6 59 5.1 7.9 65 SNAKE RIVER STATION 6920 5.3 6.9 77 13.1 9.9 132 SPRING CREEK DIVIDE 9000 6.4 11.2 57 7.7 11.5 67 THUMB DIVIDE 7980 5.8 6.7 87 9.6 8.1 119 TOGWOTEE PASS 9580 12.2 10.4 117 13.8 10.8 128 TWO OCEAN PLATEAU 9240 17.4 12.2 143 16.1 12.2 132 WILLOW CREEK 8380 8.6 12.6 68 14.4 13.9 104 ----- ----- Basin wide percent of average 88 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 12.2 10.2 120 11.7 9.0 130 BLACK BEAR 8170 18.3 15.3 120 20.0 15.7 127 CANYON 7870 6.6 5.3 125 9.7 7.0 139 FISHER CREEK 9100 19.8 14.6 136 18.4 15.2 121 MADISON PLATEAU 7750 11.0 9.9 111 14.9 11.1 134 NORTHEAST ENTRANCE 7350 2.5 4.4 57 6.7 5.8 116 PARKER PEAK 9400 12.2 9.4 130 11.4 7.6 150 SYLVAN LAKE 8420 8.7 9.5 92 13.3 10.1 132 THUMB DIVIDE 7980 5.8 6.7 87 9.6 8.1 119 TWO OCEAN PLATEAU 9240 17.4 12.2 143 16.1 12.2 132 WHISKEY CREEK 6800 6.5 6.6 98 12.1 8.9 136 WHITE MILL 8700 12.4 10.1 123 12.1 11.6 104 WOLVERINE 7650 3.7 5.0 74 7.2 6.4 112 ----- ----- Basin wide percent of average 115 127 WIND RIVER BURROUGHS CREEK 8750 7.7 6.0 128 10.4 7.2 144 COLD SPRINGS 9630 1.9 4.2 45 4.7 5.3 89 DEER PARK 9700 4.6 6.0 77 8.0 9.9 81 HOBBS PARK 10100 4.4 7.1 62 6.1 6.0 102 LITTLE WARM 9370 3.9 4.8 81 6.5 6.2 105 SOUTH PASS 9040 4.0 7.4 54 6.9 8.5 81 ST. LAWRENCE ALT 8620 2.3 3.5 66 3.9 4.4 89 TOGWOTEE PASS 9580 12.2 10.4 117 13.8 10.8 128 TOWNSEND CREEK 8700 2.6 4.0 65 5.4 5.7 95 ----- ----- Basin wide percent of average 82 103 BIGHORN BASIN BALD MTN. 9380 6.0 8.8 68 7.0 7.6 92 BEAR TRAP MEADOW 8200 3.6 2.4 150 4.9 4.2 117 BLACKWATER 9780 11.8 10.9 108 11.3 10.0 113 BONE SPRINGS DIV 9350 6.1 7.2 85 6.3 6.6 95 EVENING STAR 9200 13.3 12.3 108 14.3 11.7 122 GRAVE SPRINGS 8550 3.4 3.7 92 4.9 4.5 109 KIRWIN 9550 6.6 5.4 122 7.9 5.4 146 MARQUETTE 8760 1.5 4.7 32 5.5 5.0 110 MIDDLE POWDER 7760 3.8 5.2 73 4.6 6.3 73 OWL CREEK 8975 2.6 2.5 104 4.2 2.7 156 POWDER RIVER PASS 9480 4.3 4.7 91 6.4 5.5 116 SHELL CREEK 9580 7.3 6.8 107 7.7 6.1 126 SYLVAN LAKE 8420 8.7 9.5 92 13.3 10.1 132 SYLVAN ROAD 7120 4.3 5.5 78 11.9 9.4 127 TIMBER CREEK 7950 1.7 2.9 59 5.4 3.5 154 YOUNTS PEAK 8350 7.5 7.0 107 10.2 7.4 138 ----- ----- Basin wide percent of average 93 119 SHOSHONE RIVER BLACKWATER 9780 11.8 10.9 108 11.3 10.0 113 EVENING STAR 9200 13.3 12.3 108 14.3 11.7 122 KIRWIN 9550 6.6 5.4 122 7.9 5.4 146 MARQUETTE 8760 1.5 4.7 32 5.5 5.0 110 SYLVAN LAKE 8420 8.7 9.5 92 13.3 10.1 132 SYLVAN ROAD 7120 4.3 5.5 78 11.9 9.4 127 YOUNTS PEAK 8350 7.5 7.0 107 10.2 7.4 138 ----- ----- Basin wide percent of average 97 126 POWDER-TONGUE BEAR TRAP MEADOW 8200 3.6 2.4 150 4.9 4.2 117 BIG GOOSE 7990 -M 3.9 * 6.7 4.2 160 BONE SPRINGS DIV 9350 6.1 7.2 85 6.3 6.6 95 BURGESS JUNCTION 7880 4.4 5.1 86 6.5 5.6 116 CLOUD PEAK RESERVOIR 9860 5.9 5.3 111 7.5 6.0 125 DOME LAKE 8880 4.5 5.6 80 7.7 6.4 120 GRAVE SPRINGS 8550 3.4 3.7 92 4.9 4.5 109 HANSEN SAWMILL 8360 3.0 2.9 103 5.1 4.0 127 MIDDLE POWDER 7760 3.8 5.2 73 4.6 6.3 73 POWDER RIVER PASS 9480 4.3 4.7 91 6.4 5.5 116 SUCKER CREEK 8880 4.8 4.8 100 6.6 6.1 108 TIE CREEK 6870 1.8 2.2 82 5.7 4.7 121 ----- ----- Basin wide percent of average 93 114 BELLE FOURCHE BLIND PARK 6890 1.8 3.0 60 3.8 5.7 67 COLE CANYON 5910 1.5 3.0 50 2.9 3.7 78 NORTH RAPID CREEK 6130 2.6 2.9 90 3.1 4.9 63 ----- ----- Basin wide percent of average 66 69 UPPER N. PLATTE RIVER COLUMBINE 9160 6.0 8.6 70 9.6 10.1 95 DIVIDE PEAK 8880 9.2 8.1 114 10.0 9.0 111 ELK RIVER 8700 6.6 6.0 110 9.3 7.9 118 JOE WRIGHT 10120 8.9 8.7 102 11.1 10.8 103 NORTH FRENCH CREEK 10130 11.5 11.9 97 12.7 10.8 118 OLD BATTLE 10000 11.9 13.3 89 15.0 14.3 105 SAGE CREEK BASIN 7850 6.5 4.7 138 8.0 5.2 154 SOUTH BRUSH CREEK 8440 5.4 4.6 117 8.6 7.1 121 TOWER 10500 11.8 18.5 64 15.0 16.0 94 WEBBER SPRINGS 9250 8.9 10.3 86 11.7 11.7 100 WILLOW CREEK PASS 9540 6.5 5.1 127 7.7 5.9 131 ----- ----- Basin wide percent of average 93 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 7.7 9.5 81 8.9 9.1 98 CASPER MTN. 7900 4.3 6.4 67 7.1 6.8 104 DEADMAN HILL 10220 7.1 6.9 103 7.2 7.2 100 DEER PARK 9700 4.6 6.0 77 8.0 9.9 81 LAPRELE CREEK 8375 1.8 4.8 38 4.6 5.6 82 RENO HILL 8400 4.9 6.0 82 6.7 6.6 102 ROACH 9700 7.7 6.5 118 9.8 7.6 129 SAND LAKE 10050 10.9 13.5 81 11.5 10.4 111 SOUTH PASS 9040 4.0 7.4 54 6.9 8.5 81 WINDY PEAK 7900 2.7 3.2 84 4.1 5.1 80 ----- ----- Basin wide percent of average 79 97 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.8 3.3 145 7.7 6.4 120 DIVIDE PEAK 8880 9.2 8.1 114 10.0 9.0 111 OLD BATTLE 10000 11.9 13.3 89 15.0 14.3 105 SANDSTONE RS 8150 6.0 4.4 136 9.1 7.9 115 WHISKEY PARK 8950 9.1 9.6 95 13.1 11.7 112 ----- ----- Basin wide percent of average 106 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 4.2 6.2 68 5.1 6.0 85 BLIND BULL SUM 8650 7.7 11.7 66 7.6 9.9 77 EAST RIM DIVIDE 7930 1.8 5.2 35 4.4 5.1 86 ELKHART PARK G.S. 9400 3.8 5.6 68 5.1 6.1 84 GROS VENTRE SUMMIT 8750 6.1 6.1 100 7.4 5.8 128 GUNSIGHT PASS 9820 3.8 -M * 7.1 -M * KENDALL R.S. 7740 3.4 5.8 59 5.7 6.1 93 LOOMIS PARK 8240 4.7 7.2 65 6.5 7.4 88 NEW FORK LAKE 8340 2.8 4.8 58 4.1 5.3 77 SNIDER BASIN 8060 2.6 6.1 43 4.4 7.0 63 SPRING CREEK DIVIDE 9000 6.4 11.2 57 7.7 11.5 67 TRIPLE PEAK 8500 7.3 10.5 70 10.2 9.9 103 ----- ----- Basin wide percent of average 63 85 LOWER GREEN RIVER HAMS FORK 7840 2.0 4.7 43 3.5 5.2 67 HEWINTA 9519 2.0 3.5 57 6.9 6.5 106 HICKERSON PARK 9145 1.5 2.5 60 4.2 4.0 105 HOLE-IN-ROCK 9150 1.2 2.3 52 4.6 3.7 124 INDIAN CREEK 9425 6.4 11.0 58 7.0 10.8 65 KELLEY R.S. 8180 4.0 6.8 59 6.5 8.9 73 STEEL CREEK PARK 10200 3.2 6.0 53 7.6 6.9 110 ----- ----- Basin wide percent of average 55 88 UPPER BEAR RIVER BUG LAKE 7950 3.2 7.1 45 5.1 8.3 61 HAYDEN FORK 9212 4.1 5.4 76 7.5 9.0 83 KELLEY R.S. 8180 4.0 6.8 59 6.5 8.9 73 LILY LAKE 9156 2.7 4.8 56 6.6 7.9 84 MONTE CRISTO 8960 6.5 9.4 69 8.0 10.9 73 SALT RIVER SUMMIT 7760 2.7 4.6 59 5.1 7.9 65 TRIAL LAKE 9992 5.8 9.2 63 7.9 10.0 79 ----- ----- Basin wide percent of average 61 74 ----------------------------------------------------------------------------- -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.