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 THURSDAY: FEBRUARY 17 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.7 14.6 101 17.6 16.9 104 COTTONWOOD CREEK 7670 20.0 16.3 123 27.0 21.0 129 GRAND TARGHEE 9260 35.7 -M * 25.8 -M * GRANITE CREEK 6770 14.5 14.5 100 16.9 15.8 107 GRASSY LAKE 7265 25.9 26.7 97 28.9 28.3 102 GROS VENTRE SUMMIT 8750 11.5 10.5 110 11.2 9.7 115 GUNSIGHT PASS 9820 12.9 -M * 13.0 -M * LEWIS LAKE DIVIDE 7850 24.4 26.8 91 25.5 28.4 90 PHILLIPS BENCH 8200 22.3 21.5 104 23.3 22.3 104 SALT RIVER SUMMIT 7760 12.6 11.0 115 16.7 14.3 117 SNAKE RIVER STATION 6920 -M 14.9 * -M 17.8 * SPRING CREEK DIVIDE 9000 25.7 20.0 129 25.4 20.6 123 THUMB DIVIDE 7980 14.5 13.7 106 14.8 14.5 102 TOGWOTEE PASS 9580 21.8 19.1 114 23.2 18.9 123 TWO OCEAN PLATEAU 9240 24.3 21.4 114 20.6 21.1 98 WILLOW CREEK 8380 24.7 23.1 107 30.0 24.6 122 ----- ----- Basin wide percent of average 107 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 18.8 18.4 102 18.4 15.7 117 BLACK BEAR 8170 31.5 29.7 106 30.9 29.9 103 CANYON 7870 11.9 10.3 116 13.5 12.0 113 FISHER CREEK 9100 29.6 27.0 110 28.8 27.8 104 MADISON PLATEAU 7750 19.7 18.9 104 21.7 20.0 109 NORTHEAST ENTRANCE 7350 9.8 8.9 110 11.7 10.0 117 PARKER PEAK 9400 21.3 16.6 128 19.3 12.5 154 SYLVAN LAKE 8420 17.5 17.2 102 20.7 16.5 125 THUMB DIVIDE 7980 14.5 13.7 106 14.8 14.5 102 TWO OCEAN PLATEAU 9240 24.3 21.4 114 20.6 21.1 98 WHISKEY CREEK 6800 13.8 13.0 106 16.6 15.7 106 WHITE MILL 8700 20.5 18.5 111 21.1 20.7 102 WOLVERINE 7650 11.5 9.8 117 11.1 10.3 108 ----- ----- Basin wide percent of average 110 110 WIND RIVER BURROUGHS CREEK 8750 11.1 11.4 97 11.6 12.6 92 CASTLE CREEK 8400 4.9 -M * 5.6 -M * COLD SPRINGS 9630 6.5 6.5 100 6.6 7.8 85 DEER PARK 9700 14.6 13.8 106 15.9 16.4 97 HOBBS PARK 10100 10.5 10.9 96 9.3 9.1 102 LITTLE WARM 9370 8.8 8.6 102 9.1 10.1 90 SOUTH PASS 9040 12.3 12.8 96 10.8 13.8 78 ST. LAWRENCE ALT 8620 3.9 5.3 74 5.1 6.4 80 TOGWOTEE PASS 9580 21.8 19.1 114 23.2 18.9 123 TOWNSEND CREEK 8700 -M 6.4 * -M 8.2 * ----- ----- Basin wide percent of average 101 96 BIGHORN BASIN BALD MTN. 9380 18.2 14.8 123 14.8 13.0 114 BEAR TRAP MEADOW 8200 6.0 3.9 154 6.6 6.0 110 BLACKWATER 9780 19.1 18.6 103 18.7 15.8 118 BONE SPRINGS DIV 9350 14.4 11.9 121 12.0 10.7 112 EVENING STAR 9200 23.7 22.8 104 26.5 19.9 133 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90 KIRWIN 9550 8.6 8.4 102 9.5 8.4 113 MARQUETTE 8760 1.8 6.4 28 5.2 6.9 75 MIDDLE POWDER 7760 7.1 8.1 88 8.9 9.0 99 OWL CREEK 8975 4.1 3.7 111 4.1 4.1 100 POWDER RIVER PASS 9480 10.6 7.9 134 12.4 9.2 135 SHELL CREEK 9580 12.6 10.9 116 11.3 10.2 111 SYLVAN LAKE 8420 17.5 17.2 102 20.7 16.5 125 SYLVAN ROAD 7120 11.7 10.4 113 15.5 14.6 106 TIMBER CREEK 7950 2.9 3.9 74 3.5 5.0 70 YOUNTS PEAK 8350 12.6 13.4 94 11.1 12.6 88 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 19.1 18.6 103 18.7 15.8 118 EVENING STAR 9200 23.7 22.8 104 26.5 19.9 133 KIRWIN 9550 8.6 8.4 102 9.5 8.4 113 MARQUETTE 8760 1.8 6.4 28 5.2 6.9 75 SYLVAN LAKE 8420 17.5 17.2 102 20.7 16.5 125 SYLVAN ROAD 7120 11.7 10.4 113 15.5 14.6 106 YOUNTS PEAK 8350 12.6 13.4 94 11.1 12.6 88 ----- ----- Basin wide percent of average 98 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.0 3.9 154 6.6 6.0 110 BIG GOOSE 7990 5.9 6.9 86 7.6 6.3 121 BONE SPRINGS DIV 9350 14.4 11.9 121 12.0 10.7 112 BURGESS JUNCTION 7880 8.3 8.2 101 9.2 8.7 106 CLOUD PEAK RESERVOIR 9860 11.5 9.0 128 11.1 9.1 122 DOME LAKE 8880 8.7 8.9 98 9.6 9.5 101 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90 HANSEN SAWMILL 8360 4.6 4.7 98 5.2 5.8 90 LITTLE GOOSE 8870 6.5 -M * 10.8 -M * MIDDLE POWDER 7760 7.1 8.1 88 8.9 9.0 99 POWDER RIVER PASS 9480 10.6 7.9 134 12.4 9.2 135 SOLDIER PARK 8720 4.8 -M * 6.3 -M * SUCKER CREEK 8880 9.8 8.2 120 10.9 9.7 112 TIE CREEK 6870 5.4 4.6 117 7.7 7.4 104 ----- ----- Basin wide percent of average 111 109 BELLE FOURCHE BLIND PARK 6890 7.9 6.1 130 13.6 8.6 158 COLE CANYON 5910 6.6 5.2 127 9.5 5.1 186 NORTH RAPID CREEK 6130 7.5 6.0 125 11.6 6.9 168 ----- ----- Basin wide percent of average 127 168 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.1 14.8 136 21.9 16.0 137 COLUMBINE 9160 25.4 19.6 130 27.1 18.9 143 DIVIDE PEAK 8880 15.6 14.3 109 19.8 15.4 129 ELK RIVER 8700 18.2 14.5 126 20.3 14.5 140 JOE WRIGHT 10120 21.6 15.8 137 27.1 18.3 148 NORTH FRENCH CREEK 10130 33.6 20.6 163 -M 18.4 * OLD BATTLE 10000 31.5 23.4 135 28.0 25.5 110 SAGE CREEK BASIN 7850 15.1 8.3 182 14.0 8.9 157 SOUTH BRUSH CREEK 8440 13.5 8.7 155 16.7 12.2 137 TOWER 10500 41.4 34.3 121 42.1 28.9 146 WEBBER SPRINGS 9250 22.1 18.8 118 26.9 20.1 134 WILLOW CREEK PASS 9540 13.5 8.7 155 13.2 9.4 140 ----- ----- Basin wide percent of average 135 137 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.8 17.3 132 23.6 15.9 148 CASPER MTN. 7900 8.8 10.3 85 11.0 10.0 110 DEADMAN HILL 10220 15.6 11.9 131 16.8 11.9 141 DEER PARK 9700 14.6 13.8 106 15.9 16.4 97 LAPRELE CREEK 8375 9.4 8.1 116 10.8 9.1 119 RENO HILL 8400 11.0 9.4 117 12.9 10.4 124 ROACH 9700 15.9 12.7 125 19.1 13.2 145 SAND LAKE 10050 27.5 22.6 122 26.0 17.6 148 SOUTH PASS 9040 12.3 12.8 96 10.8 13.8 78 WINDY PEAK 7900 7.5 5.4 139 9.9 7.7 129 ----- ----- Basin wide percent of average 117 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 8.8 * 10.7 11.2 96 DIVIDE PEAK 8880 15.6 14.3 109 19.8 15.4 129 OLD BATTLE 10000 31.5 23.4 135 28.0 25.5 110 SANDSTONE RS 8150 10.8 11.2 96 -M 14.2 * WHISKEY PARK 8950 -M 21.4 * 29.9 21.5 139 ----- ----- Basin wide percent of average 118 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.3 11.0 94 10.7 10.3 104 BLIND BULL SUM 8650 21.8 20.9 104 15.6 17.4 90 EAST RIM DIVIDE 7930 11.3 9.9 114 9.8 9.2 107 ELKHART PARK G.S. 9400 9.4 10.1 93 9.5 9.9 96 GROS VENTRE SUMMIT 8750 11.5 10.5 110 11.2 9.7 115 GUNSIGHT PASS 9820 12.9 -M * 13.0 -M * KENDALL R.S. 7740 9.4 11.2 84 11.1 11.2 99 LOOMIS PARK 8240 14.3 13.0 110 15.2 13.4 113 NEW FORK LAKE 8340 9.3 8.8 106 8.7 8.8 99 POCKET CREEK 9360 7.6 -M * 10.2 -M * SNIDER BASIN 8060 15.2 11.3 135 15.1 12.5 121 SPRING CREEK DIVIDE 9000 25.7 20.0 129 25.4 20.6 123 TRIPLE PEAK 8500 23.1 18.9 122 24.9 18.6 134 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 12.1 9.8 123 12.0 9.5 126 HEWINTA 9519 9.5 8.0 119 13.0 10.5 124 HICKERSON PARK 9145 5.6 5.2 108 7.4 5.7 130 HOLE-IN-ROCK 9150 6.2 5.0 124 7.8 5.3 147 INDIAN CREEK 9425 23.3 20.1 116 21.5 19.1 113 KELLEY R.S. 8180 15.5 12.5 124 18.4 15.7 117 STEEL CREEK PARK 10200 13.0 11.2 116 15.8 11.6 136 ----- ----- Basin wide percent of average 119 124 UPPER BEAR RIVER BUG LAKE 7950 20.9 15.4 136 21.3 14.6 146 HAYDEN FORK 9212 16.8 11.6 145 23.0 15.4 149 KELLEY R.S. 8180 15.5 12.5 124 18.4 15.7 117 LILY LAKE 9156 14.3 9.7 147 16.9 12.9 131 MONTE CRISTO 8960 25.1 21.8 115 26.3 19.1 138 SALT RIVER SUMMIT 7760 12.6 11.0 115 16.7 14.3 117 TRIAL LAKE 9992 26.1 18.4 142 26.3 18.3 144 ----- ----- Basin wide percent of average 131 135 ----------------------------------------------------------------------------- -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.