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 SUNDAY: NOVEMBER 18 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.8 2.2 82 7.5 4.0 188 COTTONWOOD CREEK 7670 2.7 2.6 104 6.1 5.5 111 GRANITE CREEK 6770 1.4 1.8 78 6.3 3.5 180 GRASSY LAKE 7265 4.1 4.3 95 10.7 6.4 167 GROS VENTRE SUMMIT 8750 3.7 2.6 142 5.3 3.1 171 LEWIS LAKE DIVIDE 7850 5.4 4.3 126 10.4 6.3 165 PHILLIPS BENCH 8200 4.0 3.8 105 8.2 4.8 171 SALT RIVER SUMMIT 7760 .3 1.3 23 2.9 3.4 85 SNAKE RIVER STATION 6920 1.3 2.1 62 7.7 4.2 183 SPRING CREEK DIVIDE 9000 2.9 4.0 72 4.4 4.9 90 THUMB DIVIDE 7980 1.9 2.3 83 5.9 3.7 159 TOGWOTEE PASS 9580 7.0 4.9 143 8.1 5.1 159 TWO OCEAN PLATEAU 9240 9.3 5.8 160 9.2 5.6 164 WILLOW CREEK 8380 3.2 4.7 68 8.5 6.5 131 ----- ----- Basin wide percent of average 105 151 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.0 4.8 146 6.7 3.9 172 BLACK BEAR 8170 6.4 5.8 110 9.2 7.0 131 CANYON 7870 2.4 1.8 133 5.3 3.4 156 FISHER CREEK 9100 9.0 5.5 164 9.1 6.5 140 MADISON PLATEAU 7750 3.0 3.5 86 6.6 4.7 140 NORTHEAST ENTRANCE 7350 1.0 1.2 83 4.4 2.8 157 PARKER PEAK 9400 6.4 4.6 139 7.4 3.9 190 SYLVAN LAKE 8420 3.7 4.0 92 7.8 4.8 162 THUMB DIVIDE 7980 1.9 2.3 83 5.9 3.7 159 TWO OCEAN PLATEAU 9240 9.3 5.8 160 9.2 5.6 164 WHISKEY CREEK 6800 1.3 2.1 62 5.5 4.0 138 WHITE MILL 8700 6.2 4.1 151 7.1 5.1 139 WOLVERINE 7650 .8 1.5 53 4.7 3.1 152 ----- ----- Basin wide percent of average 124 152 WIND RIVER BURROUGHS CREEK 8750 4.3 2.3 187 6.6 3.3 200 COLD SPRINGS 9630 .7 2.2 32 3.0 3.2 94 DEER PARK 9700 1.7 3.7 46 4.1 5.1 80 HOBBS PARK 10100 1.7 3.9 44 3.7 3.5 106 LITTLE WARM 9370 1.8 2.3 78 4.1 3.3 124 SOUTH PASS 9040 .6 3.3 18 3.0 4.1 73 ST. LAWRENCE ALT 8620 .5 1.8 28 1.8 2.8 64 TOGWOTEE PASS 9580 7.0 4.9 143 8.1 5.1 159 TOWNSEND CREEK 8700 .3 2.1 14 2.7 3.4 79 ----- ----- Basin wide percent of average 70 110 BIGHORN BASIN BALD MTN. 9380 3.7 4.5 82 4.4 4.0 110 BEAR TRAP MEADOW 8200 1.1 1.1 100 2.6 2.7 96 BLACKWATER 9780 7.8 5.3 147 7.3 4.9 149 BONE SPRINGS DIV 9350 3.5 4.2 83 4.7 3.8 124 EVENING STAR 9200 7.0 5.4 130 9.6 5.5 175 GRAVE SPRINGS 8550 1.7 2.0 85 3.3 2.9 114 KIRWIN 9550 4.8 3.1 155 6.2 3.1 200 MARQUETTE 8760 .2 2.9 7 4.1 3.4 121 MIDDLE POWDER 7760 1.8 2.5 72 3.0 4.0 75 OWL CREEK 8975 1.5 1.5 100 3.2 1.8 178 POWDER RIVER PASS 9480 2.3 2.4 96 4.4 3.1 142 SHELL CREEK 9580 5.2 4.0 130 5.8 3.4 171 SYLVAN LAKE 8420 3.7 4.0 92 7.8 4.8 162 SYLVAN ROAD 7120 1.1 1.8 61 7.2 4.3 167 TIMBER CREEK 7950 .6 1.9 32 3.8 2.5 152 YOUNTS PEAK 8350 4.2 3.0 140 7.1 3.5 203 ----- ----- Basin wide percent of average 101 146 SHOSHONE RIVER BLACKWATER 9780 7.8 5.3 147 7.3 4.9 149 EVENING STAR 9200 7.0 5.4 130 9.6 5.5 175 KIRWIN 9550 4.8 3.1 155 6.2 3.1 200 MARQUETTE 8760 .2 2.9 7 4.1 3.4 121 SYLVAN LAKE 8420 3.7 4.0 92 7.8 4.8 162 SYLVAN ROAD 7120 1.1 1.8 61 7.2 4.3 167 YOUNTS PEAK 8350 4.2 3.0 140 7.1 3.5 203 ----- ----- Basin wide percent of average 113 167 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 1.1 100 2.6 2.7 96 BIG GOOSE 7990 1.5 1.6 94 4.9 2.7 181 BONE SPRINGS DIV 9350 3.5 4.2 83 4.7 3.8 124 BURGESS JUNCTION 7880 1.7 2.7 63 3.9 3.4 115 CLOUD PEAK RESERVOIR 9860 3.5 2.8 125 6.2 4.0 155 DOME LAKE 8880 2.4 3.3 73 5.3 3.9 136 GRAVE SPRINGS 8550 1.7 2.0 85 3.3 2.9 114 HANSEN SAWMILL 8360 -M 1.4 * -M 2.7 * MIDDLE POWDER 7760 1.8 2.5 72 3.0 4.0 75 POWDER RIVER PASS 9480 2.3 2.4 96 4.4 3.1 142 SUCKER CREEK 8880 2.5 2.4 104 4.6 3.6 128 TIE CREEK 6870 .1 1.1 9 3.3 3.2 103 ----- ----- Basin wide percent of average 85 124 BELLE FOURCHE BLIND PARK 6890 .8 1.5 53 1.8 3.7 49 COLE CANYON 5910 .0 1.6 0 1.6 2.6 62 NORTH RAPID CREEK 6130 .6 1.1 55 1.4 3.3 42 ----- ----- Basin wide percent of average 33 50 UPPER N. PLATTE RIVER COLUMBINE 9160 .4 2.9 14 4.3 4.4 98 DIVIDE PEAK 8880 2.4 3.4 71 3.6 4.5 80 ELK RIVER 8700 .6 1.7 35 3.7 3.7 100 JOE WRIGHT 10120 4.1 4.7 87 5.9 5.8 102 NORTH FRENCH CREEK 10130 4.5 5.6 80 6.0 5.6 107 OLD BATTLE 10000 3.4 6.1 56 5.4 6.4 84 SAGE CREEK BASIN 7850 .1 2.0 5 2.9 2.6 112 SOUTH BRUSH CREEK 8440 1.4 1.8 78 4.2 4.1 102 TOWER 10500 3.7 8.3 45 5.6 7.4 76 WEBBER SPRINGS 9250 1.9 4.3 44 4.3 5.5 78 WILLOW CREEK PASS 9540 3.0 2.5 120 3.7 3.3 112 ----- ----- Basin wide percent of average 59 93 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 2.2 4.1 54 3.5 4.4 80 CASPER MTN. 7900 1.1 3.3 33 4.0 4.1 98 DEADMAN HILL 10220 4.2 3.8 111 3.7 4.0 92 DEER PARK 9700 1.7 3.7 46 4.1 5.1 80 LAPRELE CREEK 8375 .1 2.2 5 2.5 3.3 76 RENO HILL 8400 2.2 3.1 71 4.3 4.0 108 ROACH 9700 2.0 2.8 71 3.6 3.9 92 SAND LAKE 10050 4.9 6.4 77 5.8 5.2 112 SOUTH PASS 9040 .6 3.3 18 3.0 4.1 73 WINDY PEAK 7900 .5 1.5 33 2.2 2.8 79 ----- ----- Basin wide percent of average 57 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 1.2 0 2.5 3.2 78 DIVIDE PEAK 8880 2.4 3.4 71 3.6 4.5 80 OLD BATTLE 10000 3.4 6.1 56 5.4 6.4 84 SANDSTONE RS 8150 .0 1.4 0 2.8 4.1 68 WHISKEY PARK 8950 1.7 4.0 42 4.8 5.3 91 ----- ----- Basin wide percent of average 47 81 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 2.6 100 2.9 3.1 94 BLIND BULL SUM 8650 3.6 4.3 84 4.4 4.2 105 EAST RIM DIVIDE 7930 .6 1.9 32 2.7 2.5 108 ELKHART PARK G.S. 9400 2.0 2.1 95 3.6 3.3 109 GROS VENTRE SUMMIT 8750 3.7 2.6 142 5.3 3.1 171 KENDALL R.S. 7740 1.6 1.9 84 3.7 2.9 128 LOOMIS PARK 8240 1.7 2.6 65 3.6 3.4 106 NEW FORK LAKE 8340 1.4 1.6 87 3.0 2.8 107 SNIDER BASIN 8060 .6 2.1 29 2.6 3.1 84 SPRING CREEK DIVIDE 9000 2.9 4.0 72 4.4 4.9 90 TRIPLE PEAK 8500 3.1 3.6 86 5.9 4.4 134 ----- ----- Basin wide percent of average 81 112 LOWER GREEN RIVER HAMS FORK 7840 .1 1.3 8 1.9 2.5 76 HEWINTA 9519 .0 1.5 0 4.7 3.8 124 HICKERSON PARK 9145 .1 1.0 10 3.1 2.6 119 HOLE-IN-ROCK 9150 .4 1.0 40 3.6 2.4 150 INDIAN CREEK 9425 2.3 4.0 57 3.5 4.8 73 KELLEY R.S. 8180 1.0 2.5 40 3.4 3.9 87 STEEL CREEK PARK 10200 1.9 2.8 68 5.0 3.9 128 ----- ----- Basin wide percent of average 41 105 UPPER BEAR RIVER BUG LAKE 7950 -M 2.6 * 1.8 4.0 45 HAYDEN FORK 9212 .3 1.9 16 3.8 4.3 88 KELLEY R.S. 8180 1.0 2.5 40 3.4 3.9 87 LILY LAKE 9156 .2 1.9 11 3.9 4.2 93 MONTE CRISTO 8960 1.0 3.3 30 4.1 5.0 82 SALT RIVER SUMMIT 7760 .3 1.3 23 2.9 3.4 85 TRIAL LAKE 9992 1.6 3.8 42 3.2 4.8 67 ----- ----- Basin wide percent of average 30 78 ----------------------------------------------------------------------------- -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.