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 MONDAY: NOVEMBER 19 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.6 2.4 67 7.7 4.1 188 COTTONWOOD CREEK 7670 2.6 2.7 96 6.1 5.7 107 GRANITE CREEK 6770 1.3 1.9 68 6.6 3.6 183 GRASSY LAKE 7265 3.9 4.5 87 11.1 6.6 168 GROS VENTRE SUMMIT 8750 3.8 2.7 141 5.3 3.2 166 LEWIS LAKE DIVIDE 7850 5.6 4.5 124 11.0 6.6 167 PHILLIPS BENCH 8200 3.9 4.0 98 8.3 4.9 169 SALT RIVER SUMMIT 7760 .2 1.4 14 2.9 3.5 83 SNAKE RIVER STATION 6920 1.0 2.2 45 7.8 4.4 177 SPRING CREEK DIVIDE 9000 2.9 4.2 69 4.4 5.1 86 THUMB DIVIDE 7980 2.0 2.4 83 6.1 3.8 161 TOGWOTEE PASS 9580 7.3 5.0 146 8.4 5.2 162 TWO OCEAN PLATEAU 9240 9.9 5.9 168 9.8 5.8 169 WILLOW CREEK 8380 3.0 4.9 61 8.5 6.7 127 ----- ----- Basin wide percent of average 101 150 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 7.5 4.9 153 7.1 4.0 178 BLACK BEAR 8170 6.5 6.1 107 9.2 7.3 126 CANYON 7870 2.4 1.9 126 5.3 3.5 151 FISHER CREEK 9100 10.4 5.8 179 10.4 6.7 155 MADISON PLATEAU 7750 2.9 3.6 81 6.6 4.9 135 NORTHEAST ENTRANCE 7350 .7 1.3 54 4.5 2.9 155 PARKER PEAK 9400 6.7 4.7 143 7.6 4.0 190 SYLVAN LAKE 8420 3.8 4.2 90 8.0 4.9 163 THUMB DIVIDE 7980 2.0 2.4 83 6.1 3.8 161 TWO OCEAN PLATEAU 9240 9.9 5.9 168 9.8 5.8 169 WHISKEY CREEK 6800 .9 2.2 41 5.5 4.2 131 WHITE MILL 8700 7.1 4.2 169 8.2 5.3 155 WOLVERINE 7650 .2 1.6 12 4.7 3.2 147 ----- ----- Basin wide percent of average 125 154 WIND RIVER BURROUGHS CREEK 8750 4.7 2.5 188 6.9 3.4 203 COLD SPRINGS 9630 .8 2.3 35 3.0 3.3 91 DEER PARK 9700 1.7 3.7 46 4.1 5.2 79 HOBBS PARK 10100 1.7 4.0 42 3.8 3.6 106 LITTLE WARM 9370 1.9 2.3 83 4.2 3.4 124 SOUTH PASS 9040 .6 3.4 18 2.9 4.2 69 ST. LAWRENCE ALT 8620 .4 1.9 21 1.8 2.8 64 TOGWOTEE PASS 9580 7.3 5.0 146 8.4 5.2 162 TOWNSEND CREEK 8700 .4 2.1 19 2.6 3.5 74 ----- ----- Basin wide percent of average 72 109 BIGHORN BASIN BALD MTN. 9380 3.7 4.6 80 4.6 4.1 112 BEAR TRAP MEADOW 8200 1.2 1.2 100 2.6 2.8 93 BLACKWATER 9780 8.2 5.4 152 7.6 5.0 152 BONE SPRINGS DIV 9350 3.5 4.3 81 4.7 3.9 121 EVENING STAR 9200 7.5 5.5 136 10.0 5.7 175 GRAVE SPRINGS 8550 1.8 2.1 86 3.2 3.0 107 KIRWIN 9550 5.0 3.1 161 6.4 3.2 200 MARQUETTE 8760 .2 2.9 7 4.1 3.4 121 MIDDLE POWDER 7760 1.8 2.5 72 2.9 4.1 71 OWL CREEK 8975 1.6 1.5 107 3.2 1.8 178 POWDER RIVER PASS 9480 2.3 2.4 96 4.4 3.2 138 SHELL CREEK 9580 5.2 4.1 127 5.8 3.5 166 SYLVAN LAKE 8420 3.8 4.2 90 8.0 4.9 163 SYLVAN ROAD 7120 .9 1.9 47 7.4 4.5 164 TIMBER CREEK 7950 .7 2.0 35 3.7 2.5 148 YOUNTS PEAK 8350 4.4 3.0 147 7.5 3.7 203 ----- ----- Basin wide percent of average 102 145 SHOSHONE RIVER BLACKWATER 9780 8.2 5.4 152 7.6 5.0 152 EVENING STAR 9200 7.5 5.5 136 10.0 5.7 175 KIRWIN 9550 5.0 3.1 161 6.4 3.2 200 MARQUETTE 8760 .2 2.9 7 4.1 3.4 121 SYLVAN LAKE 8420 3.8 4.2 90 8.0 4.9 163 SYLVAN ROAD 7120 .9 1.9 47 7.4 4.5 164 YOUNTS PEAK 8350 4.4 3.0 147 7.5 3.7 203 ----- ----- Basin wide percent of average 115 168 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 1.2 100 2.6 2.8 93 BIG GOOSE 7990 1.5 1.6 94 4.9 2.7 181 BONE SPRINGS DIV 9350 3.5 4.3 81 4.7 3.9 121 BURGESS JUNCTION 7880 1.7 2.7 63 3.9 3.4 115 CLOUD PEAK RESERVOIR 9860 3.5 2.8 125 6.3 4.1 154 DOME LAKE 8880 2.5 3.3 76 5.4 4.0 135 GRAVE SPRINGS 8550 1.8 2.1 86 3.2 3.0 107 HANSEN SAWMILL 8360 -M 1.4 * -M 2.7 * MIDDLE POWDER 7760 1.8 2.5 72 2.9 4.1 71 POWDER RIVER PASS 9480 2.3 2.4 96 4.4 3.2 138 SUCKER CREEK 8880 2.5 2.5 100 4.4 3.7 119 TIE CREEK 6870 .1 1.1 9 3.3 3.2 103 ----- ----- Basin wide percent of average 85 121 BELLE FOURCHE BLIND PARK 6890 .8 1.5 53 1.8 3.8 47 COLE CANYON 5910 .0 1.6 0 1.5 2.6 58 NORTH RAPID CREEK 6130 .6 1.1 55 1.5 3.4 44 ----- ----- Basin wide percent of average 33 49 UPPER N. PLATTE RIVER COLUMBINE 9160 .3 3.1 10 4.3 4.5 96 DIVIDE PEAK 8880 2.4 3.5 69 3.6 4.6 78 ELK RIVER 8700 .6 1.8 33 3.7 3.8 97 JOE WRIGHT 10120 4.0 4.8 83 5.9 5.9 100 NORTH FRENCH CREEK 10130 4.6 5.7 81 6.0 5.8 103 OLD BATTLE 10000 3.4 6.3 54 5.4 6.6 82 SAGE CREEK BASIN 7850 .0 2.0 0 2.9 2.7 107 SOUTH BRUSH CREEK 8440 1.3 1.9 68 4.2 4.2 100 TOWER 10500 3.7 8.6 43 5.7 7.6 75 WEBBER SPRINGS 9250 1.9 4.5 42 4.3 5.6 77 WILLOW CREEK PASS 9540 2.9 2.6 112 3.7 3.4 109 ----- ----- Basin wide percent of average 56 91 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 2.2 4.2 52 3.5 4.6 76 CASPER MTN. 7900 1.2 3.4 35 4.1 4.2 98 DEADMAN HILL 10220 4.0 3.9 103 3.6 4.1 88 DEER PARK 9700 1.7 3.7 46 4.1 5.2 79 LAPRELE CREEK 8375 .1 2.2 5 2.6 3.3 79 RENO HILL 8400 2.2 3.1 71 4.4 4.1 107 ROACH 9700 2.0 2.9 69 3.6 4.0 90 SAND LAKE 10050 4.9 6.6 74 5.8 5.3 109 SOUTH PASS 9040 .6 3.4 18 2.9 4.2 69 WINDY PEAK 7900 .6 1.5 40 2.3 2.9 79 ----- ----- Basin wide percent of average 56 88 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 1.3 0 2.5 3.3 76 DIVIDE PEAK 8880 2.4 3.5 69 3.6 4.6 78 OLD BATTLE 10000 3.4 6.3 54 5.4 6.6 82 SANDSTONE RS 8150 .2 1.4 14 2.7 4.2 64 WHISKEY PARK 8950 1.6 4.1 39 4.7 5.5 85 ----- ----- Basin wide percent of average 46 78 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.5 2.7 93 2.8 3.2 87 BLIND BULL SUM 8650 3.6 4.4 82 4.5 4.4 102 EAST RIM DIVIDE 7930 .4 1.9 21 2.7 2.6 104 ELKHART PARK G.S. 9400 2.1 2.2 95 3.6 3.3 109 GROS VENTRE SUMMIT 8750 3.8 2.7 141 5.3 3.2 166 KENDALL R.S. 7740 1.4 2.0 70 3.8 3.0 127 LOOMIS PARK 8240 1.7 2.7 63 3.6 3.5 103 NEW FORK LAKE 8340 1.4 1.7 82 2.9 2.9 100 SNIDER BASIN 8060 .5 2.2 23 2.5 3.2 78 SPRING CREEK DIVIDE 9000 2.9 4.2 69 4.4 5.1 86 TRIPLE PEAK 8500 3.1 3.8 82 5.9 4.5 131 ----- ----- Basin wide percent of average 77 108 LOWER GREEN RIVER HAMS FORK 7840 .0 1.4 0 1.9 2.6 73 HEWINTA 9519 .0 1.5 0 4.7 3.8 124 HICKERSON PARK 9145 .2 1.0 20 3.1 2.7 115 HOLE-IN-ROCK 9150 .3 1.0 30 3.6 2.5 144 INDIAN CREEK 9425 2.3 4.2 55 3.5 4.9 71 KELLEY R.S. 8180 .9 2.6 35 3.4 4.1 83 STEEL CREEK PARK 10200 1.9 2.9 66 5.0 4.0 125 ----- ----- Basin wide percent of average 38 102 UPPER BEAR RIVER BUG LAKE 7950 -M 2.7 * 1.9 4.2 45 HAYDEN FORK 9212 .3 2.0 15 3.9 4.5 87 KELLEY R.S. 8180 .9 2.6 35 3.4 4.1 83 LILY LAKE 9156 .1 2.0 5 4.1 4.3 95 MONTE CRISTO 8960 1.1 3.4 32 4.0 5.1 78 SALT RIVER SUMMIT 7760 .2 1.4 14 2.9 3.5 83 TRIAL LAKE 9992 1.6 3.9 41 3.2 4.9 65 ----- ----- Basin wide percent of average 27 76 ----------------------------------------------------------------------------- -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.