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 WEDNESDAY: NOVEMBER 21 , 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 2.6 69 8.0 4.4 182 COTTONWOOD CREEK 7670 2.7 3.0 90 6.3 6.1 103 GRANITE CREEK 6770 1.3 2.1 62 6.5 3.9 167 GRASSY LAKE 7265 3.8 5.0 76 11.2 7.1 158 GROS VENTRE SUMMIT 8750 3.8 2.9 131 5.5 3.4 162 LEWIS LAKE DIVIDE 7850 5.5 5.0 110 10.6 7.1 149 PHILLIPS BENCH 8200 3.9 4.3 91 8.4 5.3 158 SALT RIVER SUMMIT 7760 .1 1.6 6 2.7 3.7 73 SNAKE RIVER STATION 6920 .6 2.5 24 8.0 4.7 170 SPRING CREEK DIVIDE 9000 2.8 4.6 61 4.3 5.4 80 THUMB DIVIDE 7980 2.1 2.7 78 6.3 4.0 158 TOGWOTEE PASS 9580 7.4 5.3 140 8.5 5.5 155 TWO OCEAN PLATEAU 9240 10.9 6.3 173 10.6 6.1 174 WILLOW CREEK 8380 3.2 5.3 60 8.7 7.1 123 ----- ----- Basin wide percent of average 94 143 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 8.1 5.2 156 7.8 4.3 181 BLACK BEAR 8170 7.2 6.6 109 10.2 7.8 131 CANYON 7870 3.1 2.1 148 6.1 3.7 165 FISHER CREEK 9100 11.6 6.3 184 11.1 7.2 154 MADISON PLATEAU 7750 3.7 3.9 95 7.4 5.2 142 NORTHEAST ENTRANCE 7350 .4 1.4 29 4.8 3.0 160 PARKER PEAK 9400 7.2 5.0 144 7.7 4.2 183 SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162 THUMB DIVIDE 7980 2.1 2.7 78 6.3 4.0 158 TWO OCEAN PLATEAU 9240 10.9 6.3 173 10.6 6.1 174 WHISKEY CREEK 6800 1.4 2.4 58 6.2 4.4 141 WHITE MILL 8700 7.6 4.6 165 8.3 5.6 148 WOLVERINE 7650 .3 1.8 17 4.9 3.4 144 ----- ----- Basin wide percent of average 128 156 WIND RIVER BURROUGHS CREEK 8750 4.9 2.7 181 7.2 3.6 200 COLD SPRINGS 9630 .7 2.4 29 3.2 3.4 94 DEER PARK 9700 1.6 4.0 40 4.2 5.5 76 HOBBS PARK 10100 1.6 4.1 39 3.4 3.8 89 LITTLE WARM 9370 2.0 2.5 80 4.2 3.5 120 SOUTH PASS 9040 .5 3.6 14 3.3 4.5 73 ST. LAWRENCE ALT 8620 .2 1.9 11 1.9 2.9 66 TOGWOTEE PASS 9580 7.4 5.3 140 8.5 5.5 155 TOWNSEND CREEK 8700 .2 2.2 9 3.0 3.7 81 ----- ----- Basin wide percent of average 67 107 BIGHORN BASIN BALD MTN. 9380 3.9 4.8 81 4.0 4.2 95 BEAR TRAP MEADOW 8200 1.0 1.3 77 2.6 2.9 90 BLACKWATER 9780 8.6 5.9 146 7.9 5.4 146 BONE SPRINGS DIV 9350 3.7 4.5 82 4.8 4.1 117 EVENING STAR 9200 7.9 5.9 134 10.4 6.1 170 GRAVE SPRINGS 8550 1.6 2.3 70 3.3 3.1 106 KIRWIN 9550 4.9 3.3 148 6.0 3.3 182 MARQUETTE 8760 .0 3.0 0 3.8 3.5 109 MIDDLE POWDER 7760 1.6 2.8 57 3.1 4.2 74 OWL CREEK 8975 1.3 1.6 81 3.3 1.9 174 POWDER RIVER PASS 9480 2.4 2.5 96 4.3 3.3 130 SHELL CREEK 9580 5.4 4.3 126 6.0 3.6 167 SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162 SYLVAN ROAD 7120 1.1 2.1 52 7.9 4.8 165 TIMBER CREEK 7950 .4 2.0 20 4.1 2.6 158 YOUNTS PEAK 8350 4.4 3.3 133 7.5 3.9 192 ----- ----- Basin wide percent of average 97 141 SHOSHONE RIVER BLACKWATER 9780 8.6 5.9 146 7.9 5.4 146 EVENING STAR 9200 7.9 5.9 134 10.4 6.1 170 KIRWIN 9550 4.9 3.3 148 6.0 3.3 182 MARQUETTE 8760 .0 3.0 0 3.8 3.5 109 SYLVAN LAKE 8420 4.1 4.5 91 8.4 5.2 162 SYLVAN ROAD 7120 1.1 2.1 52 7.9 4.8 165 YOUNTS PEAK 8350 4.4 3.3 133 7.5 3.9 192 ----- ----- Basin wide percent of average 111 161 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.0 1.3 77 2.6 2.9 90 BIG GOOSE 7990 1.3 1.7 76 4.7 2.7 174 BONE SPRINGS DIV 9350 3.7 4.5 82 4.8 4.1 117 BURGESS JUNCTION 7880 1.7 2.8 61 4.2 3.5 120 CLOUD PEAK RESERVOIR 9860 3.4 3.0 113 5.7 4.2 136 DOME LAKE 8880 2.4 3.5 69 5.5 4.1 134 GRAVE SPRINGS 8550 1.6 2.3 70 3.3 3.1 106 HANSEN SAWMILL 8360 -M 1.5 * -M 2.8 * MIDDLE POWDER 7760 1.6 2.8 57 3.1 4.2 74 POWDER RIVER PASS 9480 2.4 2.5 96 4.3 3.3 130 SUCKER CREEK 8880 2.5 2.6 96 4.1 3.8 108 TIE CREEK 6870 .3 1.1 27 3.8 3.3 115 ----- ----- Basin wide percent of average 78 118 BELLE FOURCHE BLIND PARK 6890 .7 1.6 44 1.9 3.9 49 COLE CANYON 5910 .0 1.6 0 1.7 2.7 63 NORTH RAPID CREEK 6130 .1 1.2 8 1.3 3.4 38 ----- ----- Basin wide percent of average 18 49 UPPER N. PLATTE RIVER COLUMBINE 9160 .4 3.4 12 4.3 4.8 90 DIVIDE PEAK 8880 2.2 3.7 59 3.6 4.9 73 ELK RIVER 8700 .7 2.0 35 3.5 4.1 85 JOE WRIGHT 10120 4.6 5.1 90 6.1 6.2 98 NORTH FRENCH CREEK 10130 4.7 6.0 78 6.1 6.0 102 OLD BATTLE 10000 3.4 6.7 51 5.2 7.0 74 SAGE CREEK BASIN 7850 .0 2.1 0 2.9 2.8 104 SOUTH BRUSH CREEK 8440 1.3 2.0 65 4.3 4.3 100 TOWER 10500 3.8 9.2 41 5.6 8.1 69 WEBBER SPRINGS 9250 1.8 4.8 38 4.4 5.9 75 WILLOW CREEK PASS 9540 3.3 2.8 118 3.7 3.5 106 ----- ----- Basin wide percent of average 55 86 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 2.1 4.5 47 3.8 4.8 79 CASPER MTN. 7900 .8 3.6 22 3.9 4.3 91 DEADMAN HILL 10220 4.5 4.1 110 3.9 4.3 91 DEER PARK 9700 1.6 4.0 40 4.2 5.5 76 LAPRELE CREEK 8375 .0 2.4 0 2.5 3.5 71 RENO HILL 8400 2.0 3.3 61 4.0 4.2 95 ROACH 9700 2.2 3.1 71 3.8 4.2 90 SAND LAKE 10050 4.9 7.0 70 5.7 5.6 102 SOUTH PASS 9040 .5 3.6 14 3.3 4.5 73 WINDY PEAK 7900 .4 1.7 24 2.0 3.0 67 ----- ----- Basin wide percent of average 51 85 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 1.3 0 2.4 3.5 69 DIVIDE PEAK 8880 2.2 3.7 59 3.6 4.9 73 OLD BATTLE 10000 3.4 6.7 51 5.2 7.0 74 SANDSTONE RS 8150 .0 1.6 0 2.7 4.4 61 WHISKEY PARK 8950 1.6 4.4 36 4.8 5.8 83 ----- ----- Basin wide percent of average 41 73 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.5 2.9 52 2.5 3.4 74 BLIND BULL SUM 8650 3.6 4.8 75 4.5 4.7 96 EAST RIM DIVIDE 7930 .0 2.1 0 2.5 2.7 93 ELKHART PARK G.S. 9400 1.7 2.4 71 3.1 3.5 89 GROS VENTRE SUMMIT 8750 3.8 2.9 131 5.5 3.4 162 KENDALL R.S. 7740 1.2 2.1 57 3.7 3.1 119 LOOMIS PARK 8240 1.6 2.9 55 3.6 3.7 97 NEW FORK LAKE 8340 1.2 1.8 67 2.5 3.1 81 SNIDER BASIN 8060 .3 2.4 12 2.2 3.4 65 SPRING CREEK DIVIDE 9000 2.8 4.6 61 4.3 5.4 80 TRIPLE PEAK 8500 3.3 4.2 79 6.0 4.8 125 ----- ----- Basin wide percent of average 63 98 LOWER GREEN RIVER HAMS FORK 7840 .0 1.6 0 1.8 2.7 67 HEWINTA 9519 -M 1.6 * 4.7 4.0 118 HICKERSON PARK 9145 .4 1.1 36 2.9 2.8 104 HOLE-IN-ROCK 9150 .1 1.1 9 3.6 2.6 138 INDIAN CREEK 9425 2.0 4.5 44 3.4 5.2 65 KELLEY R.S. 8180 .8 2.9 28 3.3 4.3 77 STEEL CREEK PARK 10200 1.4 3.1 45 5.2 4.2 124 ----- ----- Basin wide percent of average 33 97 UPPER BEAR RIVER BUG LAKE 7950 -M 2.9 * 1.3 4.4 30 HAYDEN FORK 9212 .3 2.1 14 3.8 4.7 81 KELLEY R.S. 8180 .8 2.9 28 3.3 4.3 77 LILY LAKE 9156 .5 2.1 24 4.0 4.5 89 MONTE CRISTO 8960 1.0 3.6 28 3.6 5.4 67 SALT RIVER SUMMIT 7760 .1 1.6 6 2.7 3.7 73 TRIAL LAKE 9992 1.4 4.1 34 3.2 5.2 62 ----- ----- Basin wide percent of average 25 68 ----------------------------------------------------------------------------- -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.