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 21 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.2 2.7 156 7.6 4.6 165 COTTONWOOD CREEK 7670 3.0 3.2 94 7.5 6.2 121 GRAND TARGHEE 9260 9.5 -M * 8.8 -M * GRANITE CREEK 6770 2.8 2.2 127 4.8 4.0 120 GRASSY LAKE 7265 4.5 5.3 85 9.6 7.3 132 GROS VENTRE SUMMIT 8750 2.4 3.0 80 4.0 3.4 118 GUNSIGHT PASS 9820 3.1 -M * 4.6 -M * LEWIS LAKE DIVIDE 7850 4.8 5.2 92 9.8 7.3 134 PHILLIPS BENCH 8200 3.9 4.5 87 6.4 5.5 116 SALT RIVER SUMMIT 7760 2.1 1.7 124 4.1 3.9 105 SNAKE RIVER STATION 6920 3.2 2.6 123 7.5 4.8 156 SPRING CREEK DIVIDE 9000 4.5 4.8 94 6.2 5.6 111 THUMB DIVIDE 7980 3.5 2.8 125 6.3 4.1 154 TOGWOTEE PASS 9580 5.6 5.5 102 7.3 5.7 128 TWO OCEAN PLATEAU 9240 9.7 6.5 149 7.7 6.3 122 WILLOW CREEK 8380 4.3 5.5 78 9.6 7.3 132 ----- ----- Basin wide percent of average 105 129 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 6.7 5.4 124 7.0 4.4 159 BLACK BEAR 8170 7.8 6.8 115 10.6 8.0 132 CANYON 7870 2.7 2.2 123 4.4 3.8 116 FISHER CREEK 9100 7.7 6.5 118 10.3 7.4 139 MADISON PLATEAU 7750 5.2 4.1 127 9.3 5.4 172 NORTHEAST ENTRANCE 7350 1.7 1.4 121 3.9 3.1 126 PARKER PEAK 9400 6.3 5.1 124 8.3 4.3 193 SYLVAN LAKE 8420 4.1 4.7 87 8.2 5.4 152 THUMB DIVIDE 7980 3.5 2.8 125 6.3 4.1 154 TWO OCEAN PLATEAU 9240 9.7 6.5 149 7.7 6.3 122 WHISKEY CREEK 6800 3.7 2.5 148 7.3 4.6 159 WHITE MILL 8700 4.5 4.7 96 6.8 5.8 117 WOLVERINE 7650 4.4 1.9 232 5.6 3.5 160 ----- ----- Basin wide percent of average 125 145 WIND RIVER BURROUGHS CREEK 8750 3.0 2.8 107 4.0 3.7 108 CASTLE CREEK 8400 1.7 -M * 2.7 -M * COLD SPRINGS 9630 2.1 2.4 88 3.3 3.5 94 DEER PARK 9700 2.7 4.1 66 5.8 5.6 104 HOBBS PARK 10100 4.5 4.2 107 4.8 3.8 126 LITTLE WARM 9370 1.7 2.5 68 3.7 3.6 103 SOUTH PASS 9040 3.3 3.7 89 4.7 4.6 102 ST. LAWRENCE ALT 8620 .9 2.0 45 2.5 3.0 83 TOGWOTEE PASS 9580 5.6 5.5 102 7.3 5.7 128 TOWNSEND CREEK 8700 1.8 2.2 82 4.2 3.7 114 ----- ----- Basin wide percent of average 87 108 BIGHORN BASIN BALD MTN. 9380 6.2 4.8 129 6.0 4.3 140 BEAR TRAP MEADOW 8200 1.4 1.3 108 3.2 2.9 110 BLACKWATER 9780 8.2 6.0 137 8.1 5.5 147 BONE SPRINGS DIV 9350 6.5 4.5 144 6.4 4.2 152 EVENING STAR 9200 6.5 6.2 105 9.7 6.3 154 GRAVE SPRINGS 8550 1.7 2.3 74 3.9 3.1 126 KIRWIN 9550 4.8 3.4 141 6.1 3.4 179 MARQUETTE 8760 1.5 -M * 5.4 3.6 150 MIDDLE POWDER 7760 2.2 2.8 79 5.6 4.2 133 OWL CREEK 8975 1.6 1.6 100 2.5 1.9 132 POWDER RIVER PASS 9480 3.7 2.6 142 5.2 3.4 153 SHELL CREEK 9580 6.9 4.3 160 6.5 3.7 176 SYLVAN LAKE 8420 4.1 4.7 87 8.2 5.4 152 SYLVAN ROAD 7120 3.0 2.2 136 5.6 5.0 112 TIMBER CREEK 7950 1.4 2.0 70 4.9 2.7 181 YOUNTS PEAK 8350 4.3 3.4 126 5.8 4.0 145 ----- ----- Basin wide percent of average 120 146 SHOSHONE RIVER BLACKWATER 9780 8.2 6.0 137 8.1 5.5 147 EVENING STAR 9200 6.5 6.2 105 9.7 6.3 154 KIRWIN 9550 4.8 3.4 141 6.1 3.4 179 MARQUETTE 8760 1.5 -M * 5.4 3.6 150 SYLVAN LAKE 8420 4.1 4.7 87 8.2 5.4 152 SYLVAN ROAD 7120 3.0 2.2 136 5.6 5.0 112 YOUNTS PEAK 8350 4.3 3.4 126 5.8 4.0 145 ----- ----- Basin wide percent of average 119 147 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.4 1.3 108 3.2 2.9 110 BIG GOOSE 7990 3.6 1.8 200 7.3 2.8 261 BONE SPRINGS DIV 9350 6.5 4.5 144 6.4 4.2 152 BURGESS JUNCTION 7880 3.5 2.9 121 6.5 3.6 181 CLOUD PEAK RESERVOIR 9860 5.1 3.0 170 6.4 4.2 152 DOME LAKE 8880 4.8 3.5 137 7.8 4.2 186 GRAVE SPRINGS 8550 1.7 2.3 74 3.9 3.1 126 HANSEN SAWMILL 8360 2.3 1.5 153 4.2 2.8 150 LITTLE GOOSE 8870 4.4 -M * 8.0 -M * MIDDLE POWDER 7760 2.2 2.8 79 5.6 4.2 133 POWDER RIVER PASS 9480 3.7 2.6 142 5.2 3.4 153 SOLDIER PARK 8720 3.3 -M * 5.3 -M * SUCKER CREEK 8880 5.5 2.6 212 6.7 3.9 172 TIE CREEK 6870 1.8 1.1 164 6.9 3.4 203 ----- ----- Basin wide percent of average 141 164 BELLE FOURCHE BLIND PARK 6890 1.8 1.6 112 2.5 4.0 62 COLE CANYON 5910 .9 1.6 56 2.6 2.7 96 NORTH RAPID CREEK 6130 2.1 1.2 175 1.9 3.5 54 ----- ----- Basin wide percent of average 109 69 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 7.1 -M * 8.9 -M * CINNABAR PARK 9574 3.6 4.2 86 6.4 5.3 121 COLUMBINE 9160 3.7 3.5 106 6.1 4.9 124 DIVIDE PEAK 8880 4.3 3.9 110 7.5 5.0 150 ELK RIVER 8700 3.5 2.1 167 5.5 4.2 131 JOE WRIGHT 10120 3.4 5.2 65 7.3 6.3 116 NORTH FRENCH CREEK 10130 5.3 6.2 85 6.4 6.2 103 OLD BATTLE 10000 7.5 7.0 107 9.6 7.2 133 SAGE CREEK BASIN 7850 2.7 2.3 117 4.3 2.9 148 SOUTH BRUSH CREEK 8440 2.0 2.1 95 4.7 4.4 107 TOWER 10500 7.4 9.6 77 10.0 8.3 120 WEBBER SPRINGS 9250 5.1 4.9 104 8.1 6.1 133 WILLOW CREEK PASS 9540 2.2 2.8 79 3.9 3.6 108 ----- ----- Basin wide percent of average 94 124 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 3.4 4.6 74 5.5 4.9 112 CASPER MTN. 7900 3.1 3.7 84 7.1 4.4 161 DEADMAN HILL 10220 6.4 4.2 152 6.3 4.4 143 DEER PARK 9700 2.7 4.1 66 5.8 5.6 104 LAPRELE CREEK 8375 1.9 2.5 76 4.3 3.6 119 RENO HILL 8400 3.5 3.4 103 5.3 4.3 123 ROACH 9700 4.4 3.2 138 6.5 4.3 151 SAND LAKE 10050 6.7 7.2 93 7.3 5.8 126 SOUTH PASS 9040 3.3 3.7 89 4.7 4.6 102 WINDY PEAK 7900 1.8 1.7 106 3.3 3.1 106 ----- ----- Basin wide percent of average 97 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.8 1.4 271 4.8 3.6 133 DIVIDE PEAK 8880 4.3 3.9 110 7.5 5.0 150 OLD BATTLE 10000 7.5 7.0 107 9.6 7.2 133 SANDSTONE RS 8150 2.1 1.6 131 4.2 4.5 93 WHISKEY PARK 8950 4.5 4.6 98 8.0 6.0 133 ----- ----- Basin wide percent of average 120 130 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.1 3.0 103 4.0 3.5 114 BLIND BULL SUM 8650 3.9 5.0 78 4.5 4.8 94 EAST RIM DIVIDE 7930 1.7 2.2 77 3.6 2.8 129 ELKHART PARK G.S. 9400 2.8 2.5 112 4.7 3.6 131 GROS VENTRE SUMMIT 8750 2.4 3.0 80 4.0 3.4 118 GUNSIGHT PASS 9820 3.1 -M * 4.6 -M * KENDALL R.S. 7740 2.8 2.2 127 4.7 3.2 147 LOOMIS PARK 8240 2.6 3.1 84 5.0 3.8 132 NEW FORK LAKE 8340 2.7 1.9 142 4.2 3.1 135 POCKET CREEK 9360 3.0 -M * 4.1 -M * SNIDER BASIN 8060 2.2 2.5 88 3.5 3.5 100 SPRING CREEK DIVIDE 9000 4.5 4.8 94 6.2 5.6 111 TRIPLE PEAK 8500 4.5 4.4 102 6.8 5.0 136 ----- ----- Basin wide percent of average 96 121 LOWER GREEN RIVER HAMS FORK 7840 2.0 1.6 125 4.0 2.8 143 HEWINTA 9519 1.3 1.7 76 4.8 4.1 117 HICKERSON PARK 9145 1.5 1.1 136 5.4 2.8 193 HOLE-IN-ROCK 9150 1.4 1.1 127 4.9 2.6 188 INDIAN CREEK 9425 5.1 4.7 109 5.9 5.4 109 KELLEY R.S. 8180 3.1 3.0 103 5.7 4.4 130 STEEL CREEK PARK 10200 2.6 3.2 81 5.3 4.3 123 ----- ----- Basin wide percent of average 104 136 UPPER BEAR RIVER BUG LAKE 7950 3.3 3.0 110 5.8 4.5 129 HAYDEN FORK 9212 2.5 2.2 114 6.7 4.8 140 KELLEY R.S. 8180 3.1 3.0 103 5.7 4.4 130 LILY LAKE 9156 1.8 2.2 82 4.9 4.6 107 MONTE CRISTO 8960 4.1 3.8 108 6.1 5.6 109 SALT RIVER SUMMIT 7760 2.1 1.7 124 4.1 3.9 105 TRIAL LAKE 9992 4.2 4.3 98 4.9 5.3 92 ----- ----- Basin wide percent of average 104 115 ----------------------------------------------------------------------------- -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.