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: FEBRUARY 22 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.4 15.2 101 18.4 17.6 105 COTTONWOOD CREEK 7670 20.8 17.1 122 27.8 21.7 128 GRAND TARGHEE 9260 37.8 -M * 26.1 -M * GRANITE CREEK 6770 15.3 15.1 101 17.4 16.4 106 GRASSY LAKE 7265 27.8 27.8 100 30.5 29.4 104 GROS VENTRE SUMMIT 8750 11.8 10.8 109 11.4 10.1 113 GUNSIGHT PASS 9820 13.2 -M * 13.3 -M * LEWIS LAKE DIVIDE 7850 26.3 27.9 94 26.8 29.7 90 PHILLIPS BENCH 8200 23.4 22.4 104 24.3 23.2 105 SALT RIVER SUMMIT 7760 12.9 11.4 113 17.0 14.9 114 SNAKE RIVER STATION 6920 -M 15.5 * -M 18.4 * SPRING CREEK DIVIDE 9000 26.6 20.8 128 26.0 21.3 122 THUMB DIVIDE 7980 15.2 14.3 106 15.4 15.1 102 TOGWOTEE PASS 9580 22.3 19.7 113 23.8 19.6 121 TWO OCEAN PLATEAU 9240 25.3 22.2 114 21.2 22.0 96 WILLOW CREEK 8380 25.9 24.0 108 31.0 25.5 122 ----- ----- Basin wide percent of average 108 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.6 19.0 103 18.9 16.3 116 BLACK BEAR 8170 33.3 31.2 107 32.4 31.2 104 CANYON 7870 12.9 10.9 118 14.0 12.4 113 FISHER CREEK 9100 31.1 28.2 110 29.9 28.9 103 MADISON PLATEAU 7750 21.0 19.8 106 22.9 20.8 110 NORTHEAST ENTRANCE 7350 10.5 9.3 113 12.2 10.3 118 PARKER PEAK 9400 22.2 17.4 128 20.1 13.0 155 SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126 THUMB DIVIDE 7980 15.2 14.3 106 15.4 15.1 102 TWO OCEAN PLATEAU 9240 25.3 22.2 114 21.2 22.0 96 WHISKEY CREEK 6800 15.0 13.7 109 17.7 16.4 108 WHITE MILL 8700 21.4 19.4 110 21.9 21.5 102 WOLVERINE 7650 12.0 10.2 118 11.5 10.7 107 ----- ----- Basin wide percent of average 110 110 WIND RIVER BURROUGHS CREEK 8750 11.6 12.1 96 12.1 13.0 93 CASTLE CREEK 8400 5.0 -M * 5.9 -M * COLD SPRINGS 9630 6.6 6.9 96 6.7 8.0 84 DEER PARK 9700 15.4 13.9 111 16.9 17.0 99 HOBBS PARK 10100 11.1 11.4 97 9.7 9.4 103 LITTLE WARM 9370 9.1 9.1 100 9.2 10.4 88 SOUTH PASS 9040 13.4 13.5 99 11.6 14.3 81 ST. LAWRENCE ALT 8620 4.0 5.6 71 5.4 6.7 81 TOGWOTEE PASS 9580 22.3 19.7 113 23.8 19.6 121 TOWNSEND CREEK 8700 6.9 6.6 105 9.0 8.4 107 ----- ----- Basin wide percent of average 102 98 BIGHORN BASIN BALD MTN. 9380 19.0 15.3 124 15.6 13.4 116 BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108 BLACKWATER 9780 19.6 19.5 101 19.0 16.4 116 BONE SPRINGS DIV 9350 15.2 12.4 123 12.5 11.0 114 EVENING STAR 9200 24.8 23.8 104 27.4 20.7 132 GRAVE SPRINGS 8550 6.4 6.7 96 6.7 7.3 92 KIRWIN 9550 8.7 8.8 99 9.6 8.7 110 MARQUETTE 8760 1.7 6.6 26 5.1 7.1 72 MIDDLE POWDER 7760 7.4 8.4 88 9.1 9.2 99 OWL CREEK 8975 4.3 3.9 110 4.2 4.2 100 POWDER RIVER PASS 9480 11.2 8.3 135 13.1 9.5 138 SHELL CREEK 9580 13.2 11.2 118 12.0 10.4 115 SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126 SYLVAN ROAD 7120 12.5 10.8 116 16.1 15.1 107 TIMBER CREEK 7950 2.7 4.0 68 3.5 5.1 69 YOUNTS PEAK 8350 13.0 14.1 92 11.3 13.0 87 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 19.6 19.5 101 19.0 16.4 116 EVENING STAR 9200 24.8 23.8 104 27.4 20.7 132 KIRWIN 9550 8.7 8.8 99 9.6 8.7 110 MARQUETTE 8760 1.7 6.6 26 5.1 7.1 72 SYLVAN LAKE 8420 18.3 18.0 102 21.6 17.1 126 SYLVAN ROAD 7120 12.5 10.8 116 16.1 15.1 107 YOUNTS PEAK 8350 13.0 14.1 92 11.3 13.0 87 ----- ----- Basin wide percent of average 97 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108 BIG GOOSE 7990 5.9 7.2 82 7.8 6.4 122 BONE SPRINGS DIV 9350 15.2 12.4 123 12.5 11.0 114 BURGESS JUNCTION 7880 8.6 8.5 101 9.5 9.0 106 CLOUD PEAK RESERVOIR 9860 12.3 9.5 129 11.9 9.3 128 DOME LAKE 8880 9.2 9.2 100 10.0 9.8 102 GRAVE SPRINGS 8550 6.4 6.7 96 6.7 7.3 92 HANSEN SAWMILL 8360 5.0 4.9 102 5.7 6.0 95 LITTLE GOOSE 8870 6.7 -M * 10.8 -M * MIDDLE POWDER 7760 7.4 8.4 88 9.1 9.2 99 POWDER RIVER PASS 9480 11.2 8.3 135 13.1 9.5 138 SOLDIER PARK 8720 5.1 -M * 6.7 -M * SUCKER CREEK 8880 10.0 8.6 116 11.1 10.0 111 TIE CREEK 6870 5.5 4.6 120 7.9 7.5 105 ----- ----- Basin wide percent of average 111 111 BELLE FOURCHE BLIND PARK 6890 8.2 6.3 130 14.0 8.8 159 COLE CANYON 5910 6.7 5.4 124 9.8 5.3 185 NORTH RAPID CREEK 6130 7.8 6.3 124 12.1 7.1 170 ----- ----- Basin wide percent of average 126 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.6 15.3 135 21.9 16.5 133 COLUMBINE 9160 26.7 20.6 130 28.0 19.7 142 DIVIDE PEAK 8880 17.2 14.8 116 21.3 16.0 133 ELK RIVER 8700 19.7 15.1 130 21.4 15.1 142 JOE WRIGHT 10120 22.3 16.3 137 27.9 19.0 147 NORTH FRENCH CREEK 10130 34.2 21.3 161 -M 19.1 * OLD BATTLE 10000 33.1 24.5 135 27.8 26.6 105 SAGE CREEK BASIN 7850 16.2 8.6 188 14.9 9.3 160 SOUTH BRUSH CREEK 8440 14.0 9.2 152 17.1 12.7 135 TOWER 10500 43.5 35.6 122 43.9 30.1 146 WEBBER SPRINGS 9250 23.9 19.7 121 28.7 20.8 138 WILLOW CREEK PASS 9540 14.2 9.0 158 13.7 9.8 140 ----- ----- Basin wide percent of average 136 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.7 18.0 132 24.2 16.5 147 CASPER MTN. 7900 9.0 10.6 85 11.6 10.4 112 DEADMAN HILL 10220 16.6 12.3 135 17.6 12.4 142 DEER PARK 9700 15.4 13.9 111 16.9 17.0 99 LAPRELE CREEK 8375 9.8 8.4 117 11.1 9.4 118 RENO HILL 8400 11.3 9.7 116 13.2 10.8 122 ROACH 9700 16.6 13.2 126 20.0 13.8 145 SAND LAKE 10050 28.5 23.5 121 27.1 18.2 149 SOUTH PASS 9040 13.4 13.5 99 11.6 14.3 81 WINDY PEAK 7900 8.1 5.6 145 10.4 8.0 130 ----- ----- Basin wide percent of average 118 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.5 9.1 82 10.9 11.6 94 DIVIDE PEAK 8880 17.2 14.8 116 21.3 16.0 133 OLD BATTLE 10000 33.1 24.5 135 27.8 26.6 105 SANDSTONE RS 8150 11.5 11.7 98 -M 14.8 * WHISKEY PARK 8950 -M 22.3 * 31.6 22.2 142 ----- ----- Basin wide percent of average 115 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.3 11.4 99 11.6 10.7 108 BLIND BULL SUM 8650 22.2 21.7 102 15.9 18.0 88 EAST RIM DIVIDE 7930 11.6 10.4 112 10.1 9.6 105 ELKHART PARK G.S. 9400 10.1 10.5 96 10.1 10.3 98 GROS VENTRE SUMMIT 8750 11.8 10.8 109 11.4 10.1 113 GUNSIGHT PASS 9820 13.2 -M * 13.3 -M * KENDALL R.S. 7740 9.7 11.6 84 11.5 11.7 98 LOOMIS PARK 8240 14.7 13.5 109 15.7 14.0 112 NEW FORK LAKE 8340 9.7 9.1 107 9.0 9.1 99 POCKET CREEK 9360 8.8 -M * 11.4 -M * SNIDER BASIN 8060 15.6 11.7 133 15.5 13.0 119 SPRING CREEK DIVIDE 9000 26.6 20.8 128 26.0 21.3 122 TRIPLE PEAK 8500 23.5 19.7 119 25.4 19.4 131 ----- ----- Basin wide percent of average 110 110 LOWER GREEN RIVER HAMS FORK 7840 12.6 10.2 124 12.1 9.8 123 HEWINTA 9519 9.7 8.4 115 13.2 10.9 121 HICKERSON PARK 9145 5.8 5.5 105 7.5 5.9 127 HOLE-IN-ROCK 9150 6.5 5.3 123 8.2 5.5 149 INDIAN CREEK 9425 24.0 20.9 115 22.0 19.9 111 KELLEY R.S. 8180 15.9 13.0 122 18.7 16.3 115 STEEL CREEK PARK 10200 13.5 11.7 115 16.3 12.1 135 ----- ----- Basin wide percent of average 117 122 UPPER BEAR RIVER BUG LAKE 7950 21.8 16.0 136 22.1 15.2 145 HAYDEN FORK 9212 17.8 12.2 146 23.7 16.1 147 KELLEY R.S. 8180 15.9 13.0 122 18.7 16.3 115 LILY LAKE 9156 14.9 10.1 148 17.6 13.5 130 MONTE CRISTO 8960 26.9 22.9 117 27.3 19.9 137 SALT RIVER SUMMIT 7760 12.9 11.4 113 17.0 14.9 114 TRIAL LAKE 9992 27.7 19.3 144 26.8 19.2 140 ----- ----- Basin wide percent of average 131 133 ----------------------------------------------------------------------------- -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.