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 14 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.6 5.7 81 10.9 7.9 138 COTTONWOOD CREEK 7670 3.8 6.6 58 7.5 10.1 74 GRAND TARGHEE 9260 16.0 -M * 13.6 -M * GRANITE CREEK 6770 2.5 5.0 50 8.2 7.0 117 GRASSY LAKE 7265 7.5 10.4 72 15.0 12.5 120 GROS VENTRE SUMMIT 8750 5.0 5.1 98 6.6 5.1 129 GUNSIGHT PASS 9820 3.1 -M * 6.2 -M * LEWIS LAKE DIVIDE 7850 8.9 10.4 86 14.7 12.9 114 PHILLIPS BENCH 8200 6.4 8.9 72 10.9 9.8 111 SALT RIVER SUMMIT 7760 -M 3.7 * 3.4 6.5 52 SNAKE RIVER STATION 6920 3.2 5.6 57 10.9 8.3 131 SPRING CREEK DIVIDE 9000 4.4 9.2 48 5.9 9.5 62 THUMB DIVIDE 7980 3.5 5.4 65 7.6 6.8 112 TOGWOTEE PASS 9580 10.4 8.8 118 11.9 9.2 129 TWO OCEAN PLATEAU 9240 14.1 10.4 136 13.5 10.4 130 WILLOW CREEK 8380 5.5 10.3 53 11.0 11.8 93 ----- ----- Basin wide percent of average 78 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 10.4 8.7 120 10.1 7.6 133 BLACK BEAR 8170 12.2 12.8 95 14.9 13.2 113 CANYON 7870 4.9 4.4 111 8.2 5.9 139 FISHER CREEK 9100 16.1 12.3 131 -M 12.7 * MADISON PLATEAU 7750 7.2 8.3 87 11.3 9.5 119 NORTHEAST ENTRANCE 7350 1.8 3.5 51 6.0 5.0 120 PARKER PEAK 9400 9.9 8.3 119 10.2 6.7 152 SYLVAN LAKE 8420 6.8 8.1 84 11.2 8.8 127 THUMB DIVIDE 7980 3.5 5.4 65 7.6 6.8 112 TWO OCEAN PLATEAU 9240 14.1 10.4 136 13.5 10.4 130 WHISKEY CREEK 6800 4.0 5.3 75 9.5 7.5 127 WHITE MILL 8700 10.7 8.6 124 11.4 9.9 115 WOLVERINE 7650 2.9 4.1 71 6.5 5.6 116 ----- ----- Basin wide percent of average 104 124 WIND RIVER BURROUGHS CREEK 8750 6.7 5.1 131 9.3 6.1 152 COLD SPRINGS 9630 1.1 3.8 29 4.0 4.8 83 DEER PARK 9700 2.6 5.2 50 5.9 8.6 69 HOBBS PARK 10100 3.0 6.4 47 4.6 5.3 87 LITTLE WARM 9370 3.3 4.3 77 5.7 5.4 106 SOUTH PASS 9040 1.9 6.6 29 5.2 7.3 71 ST. LAWRENCE ALT 8620 1.2 3.2 37 3.0 4.0 75 TOGWOTEE PASS 9580 10.4 8.8 118 11.9 9.2 129 TOWNSEND CREEK 8700 1.2 3.6 33 4.4 5.2 85 ----- ----- Basin wide percent of average 67 97 BIGHORN BASIN BALD MTN. 9380 5.0 7.3 68 6.0 6.5 92 BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.9 92 BLACKWATER 9780 10.4 9.7 107 10.0 8.8 114 BONE SPRINGS DIV 9350 4.7 6.2 76 5.5 5.8 95 EVENING STAR 9200 11.3 10.8 105 13.5 10.1 134 GRAVE SPRINGS 8550 2.5 3.0 83 4.3 4.1 105 KIRWIN 9550 5.8 5.0 116 6.8 4.8 142 MARQUETTE 8760 .2 4.2 5 4.4 4.6 96 MIDDLE POWDER 7760 2.6 4.2 62 3.9 5.7 68 OWL CREEK 8975 2.0 2.2 91 3.9 2.5 156 POWDER RIVER PASS 9480 3.4 4.0 85 5.3 4.9 108 SHELL CREEK 9580 6.5 5.8 112 7.2 5.4 133 SYLVAN LAKE 8420 6.8 8.1 84 11.2 8.8 127 SYLVAN ROAD 7120 3.3 4.7 70 10.8 8.2 132 TIMBER CREEK 7950 .6 2.6 23 4.6 3.3 139 YOUNTS PEAK 8350 6.3 6.0 105 9.1 6.3 144 ----- ----- Basin wide percent of average 86 118 SHOSHONE RIVER BLACKWATER 9780 10.4 9.7 107 10.0 8.8 114 EVENING STAR 9200 11.3 10.8 105 13.5 10.1 134 KIRWIN 9550 5.8 5.0 116 6.8 4.8 142 MARQUETTE 8760 .2 4.2 5 4.4 4.6 96 SYLVAN LAKE 8420 6.8 8.1 84 11.2 8.8 127 SYLVAN ROAD 7120 3.3 4.7 70 10.8 8.2 132 YOUNTS PEAK 8350 6.3 6.0 105 9.1 6.3 144 ----- ----- Basin wide percent of average 91 128 POWDER-TONGUE BEAR TRAP MEADOW 8200 2.2 2.0 110 3.6 3.9 92 BIG GOOSE 7990 2.6 3.1 84 5.5 3.7 149 BONE SPRINGS DIV 9350 4.7 6.2 76 5.5 5.8 95 BURGESS JUNCTION 7880 2.8 4.1 68 5.1 5.0 102 CLOUD PEAK RESERVOIR 9860 4.9 4.4 111 6.6 5.5 120 DOME LAKE 8880 3.3 4.8 69 6.8 5.7 119 GRAVE SPRINGS 8550 2.5 3.0 83 4.3 4.1 105 HANSEN SAWMILL 8360 2.5 2.5 100 4.7 3.7 127 MIDDLE POWDER 7760 2.6 4.2 62 3.9 5.7 68 POWDER RIVER PASS 9480 3.4 4.0 85 5.3 4.9 108 SUCKER CREEK 8880 3.3 3.9 85 5.1 5.4 94 TIE CREEK 6870 .4 1.4 29 4.4 4.3 102 ----- ----- Basin wide percent of average 81 105 BELLE FOURCHE BLIND PARK 6890 1.2 2.3 52 3.1 5.1 61 COLE CANYON 5910 .5 2.6 19 2.3 3.3 70 NORTH RAPID CREEK 6130 1.7 2.3 74 2.4 4.4 55 ----- ----- Basin wide percent of average 47 61 UPPER N. PLATTE RIVER COLUMBINE 9160 4.3 6.8 63 8.0 8.4 95 DIVIDE PEAK 8880 6.7 6.6 102 7.7 7.7 100 ELK RIVER 8700 4.8 4.5 107 7.6 6.6 115 JOE WRIGHT 10120 7.8 7.5 104 9.9 9.4 105 NORTH FRENCH CREEK 10130 9.3 10.0 93 10.4 9.2 113 OLD BATTLE 10000 9.1 11.4 80 11.4 11.9 96 SAGE CREEK BASIN 7850 4.0 3.8 105 5.9 4.5 131 SOUTH BRUSH CREEK 8440 4.0 3.8 105 7.2 6.2 116 TOWER 10500 9.5 15.8 60 12.5 13.5 93 WEBBER SPRINGS 9250 6.6 8.6 77 9.4 9.8 96 WILLOW CREEK PASS 9540 6.0 4.4 136 6.9 5.2 133 ----- ----- Basin wide percent of average 87 105 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 6.5 7.8 83 8.0 7.7 104 CASPER MTN. 7900 1.9 5.6 34 5.5 6.1 90 DEADMAN HILL 10220 6.3 6.0 105 6.4 6.3 102 DEER PARK 9700 2.6 5.2 50 5.9 8.6 69 LAPRELE CREEK 8375 .9 4.0 22 3.7 5.0 74 RENO HILL 8400 3.4 5.2 65 5.3 5.9 90 ROACH 9700 6.2 5.4 115 8.1 6.5 125 SAND LAKE 10050 9.2 11.5 80 9.9 8.9 111 SOUTH PASS 9040 1.9 6.6 29 5.2 7.3 71 WINDY PEAK 7900 1.8 2.9 62 3.6 4.5 80 ----- ----- Basin wide percent of average 68 92 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 2.6 2.5 104 5.5 5.4 102 DIVIDE PEAK 8880 6.7 6.6 102 7.7 7.7 100 OLD BATTLE 10000 9.1 11.4 80 11.4 11.9 96 SANDSTONE RS 8150 3.3 3.4 97 6.5 6.8 96 WHISKEY PARK 8950 6.4 7.9 81 9.8 10.0 98 ----- ----- Basin wide percent of average 88 98 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 5.2 50 3.6 5.2 69 BLIND BULL SUM 8650 5.5 9.5 58 5.9 8.4 70 EAST RIM DIVIDE 7930 .9 4.3 21 3.7 4.3 86 ELKHART PARK G.S. 9400 2.6 4.6 57 3.7 5.3 70 GROS VENTRE SUMMIT 8750 5.0 5.1 98 6.6 5.1 129 GUNSIGHT PASS 9820 3.1 -M * 6.2 -M * KENDALL R.S. 7740 2.0 4.5 44 4.7 5.1 92 LOOMIS PARK 8240 3.2 5.9 54 4.9 6.2 79 NEW FORK LAKE 8340 2.0 3.8 53 3.3 4.6 72 SNIDER BASIN 8060 1.4 4.9 29 3.3 5.8 57 SPRING CREEK DIVIDE 9000 4.4 9.2 48 5.9 9.5 62 TRIPLE PEAK 8500 5.1 8.6 59 8.0 8.3 96 ----- ----- Basin wide percent of average 53 79 LOWER GREEN RIVER HAMS FORK 7840 .8 3.6 22 2.7 4.4 61 HEWINTA 9519 .8 2.8 29 5.7 5.8 98 HICKERSON PARK 9145 .8 2.0 40 3.6 3.6 100 HOLE-IN-ROCK 9150 .7 1.9 37 4.2 3.3 127 INDIAN CREEK 9425 3.6 9.0 40 4.7 9.0 52 KELLEY R.S. 8180 1.9 5.6 34 4.5 7.4 61 STEEL CREEK PARK 10200 1.7 5.0 34 6.4 6.1 105 ----- ----- Basin wide percent of average 34 80 UPPER BEAR RIVER BUG LAKE 7950 -M 5.6 * 3.2 7.1 45 HAYDEN FORK 9212 2.7 4.2 64 5.9 7.7 77 KELLEY R.S. 8180 1.9 5.6 34 4.5 7.4 61 LILY LAKE 9156 1.5 3.9 38 5.6 6.9 81 MONTE CRISTO 8960 3.9 7.2 54 6.1 9.2 66 SALT RIVER SUMMIT 7760 -M 3.7 * 3.4 6.5 52 TRIAL LAKE 9992 4.1 7.4 55 5.9 8.4 70 ----- ----- Basin wide percent of average 50 65 ----------------------------------------------------------------------------- -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.