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 TUESDAY: NOVEMBER 17 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.0 2.1 48 3.5 3.8 92 COTTONWOOD CREEK 7670 -M 2.5 * -M 5.4 * GRAND TARGHEE 9260 7.8 -M * 6.7 -M * GRANITE CREEK 6770 .2 1.7 12 2.8 3.4 82 GRASSY LAKE 7265 2.3 4.1 56 5.0 6.2 81 GROS VENTRE SUMMIT 8750 2.2 2.5 88 2.5 3.0 83 GUNSIGHT PASS 9820 2.0 -M * 3.3 -M * LEWIS LAKE DIVIDE 7850 -M 4.0 * -M 6.1 * PHILLIPS BENCH 8200 1.8 3.6 50 3.8 4.6 83 SALT RIVER SUMMIT 7760 .3 1.3 23 2.7 3.3 82 SNAKE RIVER STATION 6920 .9 2.0 45 4.8 4.1 117 SPRING CREEK DIVIDE 9000 3.7 3.8 97 4.5 4.8 94 THUMB DIVIDE 7980 2.2 2.2 100 5.4 3.6 150 TOGWOTEE PASS 9580 5.0 4.7 106 5.3 4.9 108 TWO OCEAN PLATEAU 9240 6.9 5.6 123 5.4 5.4 100 WILLOW CREEK 8380 2.4 4.5 53 6.4 6.3 102 ----- ----- Basin wide percent of average 76 98 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 5.2 4.7 111 4.3 3.8 113 BLACK BEAR 8170 6.5 5.6 116 7.7 6.8 113 CANYON 7870 2.4 1.8 133 3.9 3.3 118 FISHER CREEK 9100 7.5 5.4 139 7.7 6.3 122 MADISON PLATEAU 7750 4.0 3.4 118 7.0 4.6 152 NORTHEAST ENTRANCE 7350 .6 1.1 55 3.4 2.7 126 PARKER PEAK 9400 5.8 4.5 129 4.4 3.8 116 SYLVAN LAKE 8420 2.8 4.0 70 4.8 4.6 104 THUMB DIVIDE 7980 2.2 2.2 100 5.4 3.6 150 TWO OCEAN PLATEAU 9240 6.9 5.6 123 5.4 5.4 100 WHISKEY CREEK 6800 1.4 2.0 70 4.4 3.9 113 WHITE MILL 8700 5.5 4.0 138 5.3 4.9 108 WOLVERINE 7650 .9 1.5 60 2.6 3.0 87 ----- ----- Basin wide percent of average 113 117 WIND RIVER BURROUGHS CREEK 8750 3.2 2.3 139 3.0 3.2 94 COLD SPRINGS 9630 2.6 2.2 118 3.2 3.2 100 DEER PARK 9700 5.1 3.7 138 6.3 5.0 126 HOBBS PARK 10100 5.5 3.8 145 5.3 3.5 151 LITTLE WARM 9370 2.1 2.2 95 2.7 3.2 84 SOUTH PASS 9040 4.3 3.2 134 5.3 4.0 132 ST. LAWRENCE ALT 8620 2.0 1.8 111 3.9 2.7 144 TOGWOTEE PASS 9580 5.0 4.7 106 5.3 4.9 108 TOWNSEND CREEK 8700 3.1 2.1 148 5.1 3.4 150 ----- ----- Basin wide percent of average 127 121 BIGHORN BASIN BALD MTN. 9380 4.2 4.5 93 3.6 3.9 92 BEAR TRAP MEADOW 8200 1.2 1.1 109 2.2 2.7 81 BLACKWATER 9780 6.6 5.2 127 5.7 4.7 121 BONE SPRINGS DIV 9350 3.6 4.2 86 3.5 3.8 92 EVENING STAR 9200 6.1 5.2 117 7.4 5.3 140 GRAVE SPRINGS 8550 2.8 2.0 140 3.9 2.8 139 KIRWIN 9550 3.3 3.0 110 2.8 3.0 93 MARQUETTE 8760 3.0 2.8 107 3.5 3.3 106 MIDDLE POWDER 7760 2.7 2.5 108 3.4 3.9 87 OWL CREEK 8975 2.4 1.5 160 2.1 1.8 117 POWDER RIVER PASS 9480 2.2 2.4 92 2.7 3.0 90 SHELL CREEK 9580 4.0 4.0 100 3.6 3.3 109 SYLVAN LAKE 8420 2.8 4.0 70 4.8 4.6 104 SYLVAN ROAD 7120 1.3 1.8 72 4.0 4.2 95 TIMBER CREEK 7950 .9 1.9 47 2.5 2.5 100 YOUNTS PEAK 8350 3.2 2.8 114 2.7 3.4 79 ----- ----- Basin wide percent of average 103 104 SHOSHONE RIVER BLACKWATER 9780 6.6 5.2 127 5.7 4.7 121 EVENING STAR 9200 6.1 5.2 117 7.4 5.3 140 KIRWIN 9550 3.3 3.0 110 2.8 3.0 93 MARQUETTE 8760 3.0 2.8 107 3.5 3.3 106 SYLVAN LAKE 8420 2.8 4.0 70 4.8 4.6 104 SYLVAN ROAD 7120 1.3 1.8 72 4.0 4.2 95 YOUNTS PEAK 8350 3.2 2.8 114 2.7 3.4 79 ----- ----- Basin wide percent of average 106 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.2 1.1 109 2.2 2.7 81 BIG GOOSE 7990 2.1 1.5 140 3.7 2.6 142 BONE SPRINGS DIV 9350 3.6 4.2 86 3.5 3.8 92 BURGESS JUNCTION 7880 3.4 2.7 126 4.2 3.3 127 CLOUD PEAK RESERVOIR 9860 3.8 2.7 141 3.7 3.9 95 DOME LAKE 8880 2.7 3.2 84 3.9 3.8 103 GRAVE SPRINGS 8550 2.8 2.0 140 3.9 2.8 139 HANSEN SAWMILL 8360 1.4 1.3 108 2.3 2.7 85 MIDDLE POWDER 7760 2.7 2.5 108 3.4 3.9 87 POWDER RIVER PASS 9480 2.2 2.4 92 2.7 3.0 90 SUCKER CREEK 8880 4.0 2.4 167 4.6 3.5 131 TIE CREEK 6870 .0 1.2 0 4.3 3.2 134 ----- ----- Basin wide percent of average 110 108 BELLE FOURCHE BLIND PARK 6890 1.2 1.5 80 4.3 3.7 116 COLE CANYON 5910 .0 1.5 0 4.1 2.5 164 NORTH RAPID CREEK 6130 1.2 1.0 120 4.4 3.3 133 ----- ----- Basin wide percent of average 60 135 UPPER N. PLATTE RIVER COLUMBINE 9160 1.5 2.8 54 4.8 4.2 114 DIVIDE PEAK 8880 3.9 3.3 118 7.0 4.4 159 ELK RIVER 8700 1.3 1.6 81 4.4 3.6 122 JOE WRIGHT 10120 4.3 4.6 93 5.8 5.6 104 NORTH FRENCH CREEK 10130 8.8 5.4 163 9.0 5.5 164 OLD BATTLE 10000 9.2 5.9 156 9.6 6.2 155 SAGE CREEK BASIN 7850 1.9 1.9 100 4.1 2.6 158 SOUTH BRUSH CREEK 8440 2.1 1.7 124 5.7 4.0 142 TOWER 10500 8.3 8.0 104 8.5 7.2 118 WEBBER SPRINGS 9250 4.5 4.1 110 7.8 5.3 147 WILLOW CREEK PASS 9540 2.1 2.4 88 3.5 3.2 109 ----- ----- Basin wide percent of average 115 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 5.7 4.0 142 6.7 4.3 156 CASPER MTN. 7900 3.0 3.2 94 4.4 4.0 110 DEADMAN HILL 10220 1.2 3.7 32 6.1 3.9 156 DEER PARK 9700 5.1 3.7 138 6.3 5.0 126 LAPRELE CREEK 8375 1.9 2.1 90 4.2 3.2 131 RENO HILL 8400 4.0 3.0 133 5.4 3.9 138 ROACH 9700 4.7 2.7 174 6.5 3.8 171 SAND LAKE 10050 9.2 6.2 148 9.6 5.1 188 SOUTH PASS 9040 4.3 3.2 134 5.3 4.0 132 WINDY PEAK 7900 1.3 1.4 93 4.1 2.8 146 ----- ----- Basin wide percent of average 122 146 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .9 1.2 75 3.2 3.2 100 DIVIDE PEAK 8880 3.9 3.3 118 7.0 4.4 159 OLD BATTLE 10000 9.2 5.9 156 9.6 6.2 155 SANDSTONE RS 8150 .0 1.3 0 3.7 3.9 95 WHISKEY PARK 8950 3.1 3.8 82 7.3 5.2 140 ----- ----- Basin wide percent of average 110 134 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.1 2.5 124 3.3 3.0 110 BLIND BULL SUM 8650 3.0 4.1 73 2.8 4.1 68 EAST RIM DIVIDE 7930 .2 1.8 11 2.1 2.4 88 ELKHART PARK G.S. 9400 2.3 2.1 110 2.9 3.2 91 GROS VENTRE SUMMIT 8750 2.2 2.5 88 2.5 3.0 83 GUNSIGHT PASS 9820 2.0 -M * 3.3 -M * KENDALL R.S. 7740 .2 1.8 11 2.2 2.8 79 LOOMIS PARK 8240 .5 2.5 20 2.6 3.3 79 NEW FORK LAKE 8340 .3 1.5 20 2.1 2.7 78 SNIDER BASIN 8060 1.2 2.0 60 2.9 3.0 97 SPRING CREEK DIVIDE 9000 3.7 3.8 97 4.5 4.8 94 TRIPLE PEAK 8500 3.9 3.5 111 4.9 4.2 117 ----- ----- Basin wide percent of average 73 90 LOWER GREEN RIVER HAMS FORK 7840 .3 1.3 23 3.2 2.4 133 HEWINTA 9519 .3 1.5 20 3.0 3.7 81 HICKERSON PARK 9145 1.3 1.0 130 3.5 2.6 135 HOLE-IN-ROCK 9150 1.3 1.0 130 3.9 2.4 162 INDIAN CREEK 9425 4.6 3.8 121 5.2 4.6 113 KELLEY R.S. 8180 -M 2.4 * -M 3.8 * STEEL CREEK PARK 10200 2.6 2.8 93 4.0 3.8 105 ----- ----- Basin wide percent of average 91 117 UPPER BEAR RIVER BUG LAKE 7950 .3 2.5 12 4.0 3.9 103 HAYDEN FORK 9212 1.0 1.8 56 3.9 4.2 93 KELLEY R.S. 8180 -M 2.4 * -M 3.8 * LILY LAKE 9156 1.7 1.9 89 3.3 4.1 80 MONTE CRISTO 8960 2.4 3.1 77 4.7 4.8 98 SALT RIVER SUMMIT 7760 .3 1.3 23 2.7 3.3 82 TRIAL LAKE 9992 3.0 3.6 83 3.6 4.7 77 ----- ----- Basin wide percent of average 61 89 ----------------------------------------------------------------------------- -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.