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 20 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.1 2.6 158 7.6 4.4 173 COTTONWOOD CREEK 7670 2.8 3.0 93 7.4 6.1 121 GRAND TARGHEE 9260 9.2 -M * 8.4 -M * GRANITE CREEK 6770 2.6 2.1 124 4.6 3.9 118 GRASSY LAKE 7265 4.4 5.0 88 9.4 7.1 132 GROS VENTRE SUMMIT 8750 2.3 2.9 79 3.6 3.4 106 GUNSIGHT PASS 9820 2.9 -M * 4.3 -M * LEWIS LAKE DIVIDE 7850 4.6 5.0 92 9.5 7.1 134 PHILLIPS BENCH 8200 3.7 4.3 86 6.2 5.3 117 SALT RIVER SUMMIT 7760 1.8 1.6 112 3.6 3.7 97 SNAKE RIVER STATION 6920 3.2 2.5 128 7.4 4.7 157 SPRING CREEK DIVIDE 9000 4.3 4.6 93 5.9 5.4 109 THUMB DIVIDE 7980 3.4 2.7 126 6.1 4.0 152 TOGWOTEE PASS 9580 5.4 5.3 102 7.1 5.5 129 TWO OCEAN PLATEAU 9240 9.6 6.3 152 7.5 6.1 123 WILLOW CREEK 8380 4.1 5.3 77 9.3 7.1 131 ----- ----- Basin wide percent of average 106 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 6.4 5.2 123 6.7 4.3 156 BLACK BEAR 8170 7.7 6.6 117 10.3 7.8 132 CANYON 7870 2.7 2.1 129 4.3 3.7 116 FISHER CREEK 9100 7.4 6.3 117 9.8 7.2 136 MADISON PLATEAU 7750 5.0 3.9 128 9.1 5.2 175 NORTHEAST ENTRANCE 7350 1.7 1.4 121 3.8 3.0 127 PARKER PEAK 9400 6.1 5.0 122 8.1 4.2 193 SYLVAN LAKE 8420 4.0 4.5 89 8.1 5.2 156 THUMB DIVIDE 7980 3.4 2.7 126 6.1 4.0 152 TWO OCEAN PLATEAU 9240 9.6 6.3 152 7.5 6.1 123 WHISKEY CREEK 6800 3.7 2.4 154 7.2 4.4 164 WHITE MILL 8700 4.4 4.6 96 6.5 5.6 116 WOLVERINE 7650 4.4 1.8 244 5.4 3.4 159 ----- ----- Basin wide percent of average 126 145 WIND RIVER BURROUGHS CREEK 8750 2.8 2.7 104 3.8 3.6 106 CASTLE CREEK 8400 1.6 -M * 2.4 -M * COLD SPRINGS 9630 1.9 2.4 79 3.1 3.4 91 DEER PARK 9700 2.7 4.0 68 5.6 5.5 102 HOBBS PARK 10100 4.5 4.1 110 4.5 3.8 118 LITTLE WARM 9370 1.5 2.5 60 3.4 3.6 94 SOUTH PASS 9040 3.1 3.6 86 4.4 4.5 98 ST. LAWRENCE ALT 8620 .8 1.9 42 2.4 2.9 83 TOGWOTEE PASS 9580 5.4 5.3 102 7.1 5.5 129 TOWNSEND CREEK 8700 1.6 2.2 73 4.0 3.7 108 ----- ----- Basin wide percent of average 85 105 BIGHORN BASIN BALD MTN. 9380 6.1 4.8 127 5.7 4.2 136 BEAR TRAP MEADOW 8200 1.3 1.3 100 3.0 2.9 103 BLACKWATER 9780 8.1 5.9 137 7.7 5.4 143 BONE SPRINGS DIV 9350 6.5 4.5 144 6.2 4.1 151 EVENING STAR 9200 6.2 5.9 105 9.3 6.1 152 GRAVE SPRINGS 8550 1.6 2.3 70 3.9 3.1 126 KIRWIN 9550 4.7 3.3 142 5.8 3.3 176 MARQUETTE 8760 1.4 -M * 5.2 3.6 144 MIDDLE POWDER 7760 2.0 2.8 71 5.3 4.2 126 OWL CREEK 8975 1.5 1.6 94 2.3 1.9 121 POWDER RIVER PASS 9480 3.8 2.5 152 4.9 3.3 148 SHELL CREEK 9580 6.9 4.3 160 6.4 3.6 178 SYLVAN LAKE 8420 4.0 4.5 89 8.1 5.2 156 SYLVAN ROAD 7120 3.0 2.1 143 5.5 4.8 115 TIMBER CREEK 7950 1.3 2.0 65 4.9 2.6 188 YOUNTS PEAK 8350 4.3 3.3 130 5.6 3.9 144 ----- ----- Basin wide percent of average 120 144 SHOSHONE RIVER BLACKWATER 9780 8.1 5.9 137 7.7 5.4 143 EVENING STAR 9200 6.2 5.9 105 9.3 6.1 152 KIRWIN 9550 4.7 3.3 142 5.8 3.3 176 MARQUETTE 8760 1.4 -M * 5.2 3.6 144 SYLVAN LAKE 8420 4.0 4.5 89 8.1 5.2 156 SYLVAN ROAD 7120 3.0 2.1 143 5.5 4.8 115 YOUNTS PEAK 8350 4.3 3.3 130 5.6 3.9 144 ----- ----- Basin wide percent of average 121 146 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.3 1.3 100 3.0 2.9 103 BIG GOOSE 7990 3.5 1.7 206 7.1 2.7 263 BONE SPRINGS DIV 9350 6.5 4.5 144 6.2 4.1 151 BURGESS JUNCTION 7880 3.5 2.8 125 6.2 3.5 177 CLOUD PEAK RESERVOIR 9860 5.0 3.0 167 6.0 4.2 143 DOME LAKE 8880 4.6 3.5 131 7.8 4.1 190 GRAVE SPRINGS 8550 1.6 2.3 70 3.9 3.1 126 HANSEN SAWMILL 8360 2.2 1.5 147 4.1 2.8 146 LITTLE GOOSE 8870 4.3 -M * 7.8 -M * MIDDLE POWDER 7760 2.0 2.8 71 5.3 4.2 126 POWDER RIVER PASS 9480 3.8 2.5 152 4.9 3.3 148 SOLDIER PARK 8720 3.0 -M * 5.2 -M * SUCKER CREEK 8880 5.4 2.6 208 6.4 3.8 168 TIE CREEK 6870 1.6 1.1 145 6.8 3.3 206 ----- ----- Basin wide percent of average 139 161 BELLE FOURCHE BLIND PARK 6890 1.5 1.6 94 2.4 3.9 62 COLE CANYON 5910 .6 1.6 38 2.5 2.7 93 NORTH RAPID CREEK 6130 1.9 1.2 158 1.6 3.4 47 ----- ----- Basin wide percent of average 91 65 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 6.7 -M * 8.5 -M * CINNABAR PARK 9574 3.4 4.1 83 6.2 5.2 119 COLUMBINE 9160 3.7 3.4 109 6.0 4.8 125 DIVIDE PEAK 8880 4.0 3.7 108 7.3 4.9 149 ELK RIVER 8700 3.1 2.0 155* 5.1 4.1 124 JOE WRIGHT 10120 3.6 5.1 71 7.2 6.2 116 NORTH FRENCH CREEK 10130 5.0 6.0 83 6.2 6.0 103 OLD BATTLE 10000 6.9 6.7 103 8.9 7.0 127 SAGE CREEK BASIN 7850 2.4 2.1 114 4.2 2.8 150 SOUTH BRUSH CREEK 8440 1.9 2.0 95 4.5 4.3 105 TOWER 10500 7.0 9.2 76 9.7 8.1 120 WEBBER SPRINGS 9250 4.7 4.8 98 7.7 5.9 131 WILLOW CREEK PASS 9540 2.4 2.8 86 3.9 3.5 111 ----- ----- Basin wide percent of average 93 122 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.3 4.5 73 5.4 4.8 112 CASPER MTN. 7900 3.1 3.6 86 7.0 4.3 163 DEADMAN HILL 10220 6.3 4.1 154 6.2 4.3 144 DEER PARK 9700 2.7 4.0 68 5.6 5.5 102 LAPRELE CREEK 8375 1.7 2.4 71 4.2 3.5 120 RENO HILL 8400 3.3 3.3 100 5.1 4.2 121 ROACH 9700 4.2 3.1 135 6.4 4.2 152 SAND LAKE 10050 6.5 7.0 93 7.2 5.6 129 SOUTH PASS 9040 3.1 3.6 86 4.4 4.5 98 WINDY PEAK 7900 1.7 1.7 100 3.4 3.0 113 ----- ----- Basin wide percent of average 96 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.6 1.3 277 4.6 3.5 131 DIVIDE PEAK 8880 4.0 3.7 108 7.3 4.9 149 OLD BATTLE 10000 6.9 6.7 103 8.9 7.0 127 SANDSTONE RS 8150 1.9 1.6 119 4.0 4.4 91 WHISKEY PARK 8950 4.1 4.4 93 7.6 5.8 131 ----- ----- Basin wide percent of average 116 127 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 2.9 90 3.5 3.4 103 BLIND BULL SUM 8650 3.6 4.8 75 4.3 4.7 91 EAST RIM DIVIDE 7930 1.5 2.1 71 3.4 2.7 126 ELKHART PARK G.S. 9400 2.5 2.4 104 4.5 3.5 129 GROS VENTRE SUMMIT 8750 2.3 2.9 79 3.6 3.4 106 GUNSIGHT PASS 9820 2.9 -M * 4.3 -M * KENDALL R.S. 7740 2.6 2.1 124 4.2 3.1 135 LOOMIS PARK 8240 2.4 2.9 83 4.7 3.7 127 NEW FORK LAKE 8340 2.4 1.8 133 3.9 3.1 126 POCKET CREEK 9360 2.6 -M * 3.9 -M * SNIDER BASIN 8060 2.0 2.4 83 3.2 3.4 94 SPRING CREEK DIVIDE 9000 4.3 4.6 93 5.9 5.4 109 TRIPLE PEAK 8500 4.3 4.2 102 6.4 4.8 133 ----- ----- Basin wide percent of average 92 116 LOWER GREEN RIVER HAMS FORK 7840 1.8 1.6 112 3.9 2.7 144 HEWINTA 9519 1.1 1.6 69 4.6 4.0 115 HICKERSON PARK 9145 1.3 1.1 118 5.1 2.8 182 HOLE-IN-ROCK 9150 1.3 1.1 118 4.8 2.6 185 INDIAN CREEK 9425 4.7 4.5 104 5.4 5.2 104 KELLEY R.S. 8180 2.8 2.9 97 5.0 4.3 116 STEEL CREEK PARK 10200 2.4 3.1 77 5.3 4.2 126 ----- ----- Basin wide percent of average 97 132 UPPER BEAR RIVER BUG LAKE 7950 3.1 2.9 107 5.6 4.4 127 HAYDEN FORK 9212 2.5 2.1 119 6.6 4.7 140 KELLEY R.S. 8180 2.8 2.9 97 5.0 4.3 116 LILY LAKE 9156 1.7 2.1 81 4.8 4.5 107 MONTE CRISTO 8960 3.9 3.6 108 5.9 5.4 109 SALT RIVER SUMMIT 7760 1.8 1.6 112 3.6 3.7 97 TRIAL LAKE 9992 4.1 4.1 100 4.8 5.2 92 ----- ----- Basin wide percent of average 103 113 ----------------------------------------------------------------------------- -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 1971-2000. 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.