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 WEDNESDAY: FEBRUARY 23 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.7 15.3 103 18.7 17.7 106 COTTONWOOD CREEK 7670 21.0 17.2 122 28.1 21.9 128 GRAND TARGHEE 9260 37.9 -M * 26.1 -M * GRANITE CREEK 6770 15.6 15.2 103 17.7 16.5 107 GRASSY LAKE 7265 28.3 28.0 101 30.9 29.6 104 GROS VENTRE SUMMIT 8750 11.9 10.9 109 11.6 10.2 114 GUNSIGHT PASS 9820 13.3 -M * 13.3 -M * LEWIS LAKE DIVIDE 7850 26.9 28.1 96 26.9 29.9 90 PHILLIPS BENCH 8200 23.8 22.6 105 24.6 23.4 105 SALT RIVER SUMMIT 7760 13.4 11.5 117 17.4 15.0 116 SNAKE RIVER STATION 6920 -M 15.6 * -M 18.6 * SPRING CREEK DIVIDE 9000 27.0 21.0 129 26.3 21.5 122 THUMB DIVIDE 7980 15.5 14.4 108 15.6 15.2 103 TOGWOTEE PASS 9580 22.6 19.8 114 24.0 19.7 122 TWO OCEAN PLATEAU 9240 -M 22.3 * -M 22.2 * WILLOW CREEK 8380 26.4 24.1 110 31.4 25.7 122 ----- ----- Basin wide percent of average 109 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.8 19.1 104 19.1 16.4 116 BLACK BEAR 8170 34.2 31.5 109 33.2 31.5 105 CANYON 7870 13.1 10.9 120 14.1 12.5 113 FISHER CREEK 9100 31.6 28.4 111 30.3 29.1 104 MADISON PLATEAU 7750 21.7 19.9 109 23.6 21.0 112 NORTHEAST ENTRANCE 7350 10.7 9.4 114 12.3 10.4 118 PARKER PEAK 9400 22.4 17.5 128 20.3 13.1 155 SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127 THUMB DIVIDE 7980 15.5 14.4 108 15.6 15.2 103 TWO OCEAN PLATEAU 9240 -M 22.3 * -M 22.2 * WHISKEY CREEK 6800 15.4 13.8 112 18.3 16.5 111 WHITE MILL 8700 21.6 19.5 111 22.0 21.6 102 WOLVERINE 7650 12.1 10.3 117 11.5 10.7 107 ----- ----- Basin wide percent of average 111 113 WIND RIVER BURROUGHS CREEK 8750 11.6 12.2 95 12.1 13.1 92 CASTLE CREEK 8400 5.1 -M * 5.9 -M * COLD SPRINGS 9630 6.6 6.9 96 6.7 8.1 83 DEER PARK 9700 15.5 13.9 112 17.2 17.1 101 HOBBS PARK 10100 11.2 11.5 97 10.0 9.5 105 LITTLE WARM 9370 9.2 9.2 100 9.3 10.4 89 SOUTH PASS 9040 13.8 13.5 102 11.8 14.4 82 ST. LAWRENCE ALT 8620 4.4 5.6 79 5.6 6.7 84 TOGWOTEE PASS 9580 22.6 19.8 114 24.0 19.7 122 TOWNSEND CREEK 8700 6.9 6.7 103 9.0 8.5 106 ----- ----- Basin wide percent of average 103 98 BIGHORN BASIN BALD MTN. 9380 19.0 15.4 123 15.6 13.5 116 BEAR TRAP MEADOW 8200 6.1 4.1 149 6.7 6.2 108 BLACKWATER 9780 19.8 19.7 101 19.2 16.5 116 BONE SPRINGS DIV 9350 15.3 12.5 122 12.6 11.1 114 EVENING STAR 9200 25.0 24.0 104 27.5 20.8 132 GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91 KIRWIN 9550 8.7 8.8 99 9.6 8.8 109 MARQUETTE 8760 1.7 6.6 26 5.1 7.2 71 MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.2 99 OWL CREEK 8975 4.3 3.9 110 4.2 4.2 100 POWDER RIVER PASS 9480 11.4 8.3 137 13.1 9.6 136 SHELL CREEK 9580 13.4 11.3 119 12.1 10.5 115 SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127 SYLVAN ROAD 7120 12.7 10.9 117 16.3 15.1 108 TIMBER CREEK 7950 2.8 4.0 70 3.6 5.2 69 YOUNTS PEAK 8350 13.2 14.2 93 11.5 13.1 88 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 19.8 19.7 101 19.2 16.5 116 EVENING STAR 9200 25.0 24.0 104 27.5 20.8 132 KIRWIN 9550 8.7 8.8 99 9.6 8.8 109 MARQUETTE 8760 1.7 6.6 26 5.1 7.2 71 SYLVAN LAKE 8420 18.6 18.1 103 21.8 17.2 127 SYLVAN ROAD 7120 12.7 10.9 117 16.3 15.1 108 YOUNTS PEAK 8350 13.2 14.2 93 11.5 13.1 88 ----- ----- 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 7.3 81 7.8 6.5 120 BONE SPRINGS DIV 9350 15.3 12.5 122 12.6 11.1 114 BURGESS JUNCTION 7880 8.6 8.6 100 9.5 9.1 104 CLOUD PEAK RESERVOIR 9860 12.4 9.5 131 11.8 9.4 126 DOME LAKE 8880 9.3 9.2 101 10.1 9.8 103 GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91 HANSEN SAWMILL 8360 5.2 4.9 106 5.8 6.0 97 LITTLE GOOSE 8870 6.8 -M * 10.8 -M * MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.2 99 POWDER RIVER PASS 9480 11.4 8.3 137 13.1 9.6 136 SOLDIER PARK 8720 5.3 -M * 6.8 -M * SUCKER CREEK 8880 10.1 8.7 116 11.1 10.1 110 TIE CREEK 6870 5.5 4.6 120 7.9 7.6 104 ----- ----- Basin wide percent of average 111 110 BELLE FOURCHE BLIND PARK 6890 8.3 6.4 130 14.0 8.9 157 COLE CANYON 5910 6.8 5.4 126 10.1 5.3 191 NORTH RAPID CREEK 6130 7.8 6.4 122 12.1 7.2 168 ----- ----- Basin wide percent of average 126 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.5 15.4 133 21.9 16.6 132 COLUMBINE 9160 26.8 20.7 129 28.3 19.8 143 DIVIDE PEAK 8880 17.2 14.9 115 21.3 16.2 131 ELK RIVER 8700 19.8 15.2 130 21.4 15.3 140 JOE WRIGHT 10120 22.3 16.4 136 28.2 19.1 148 NORTH FRENCH CREEK 10130 34.2 21.5 159 32.2 19.2 168 OLD BATTLE 10000 33.1 24.7 134 27.8 26.9 103 SAGE CREEK BASIN 7850 16.2 8.6 188 15.0 9.4 160 SOUTH BRUSH CREEK 8440 14.1 9.3 152 17.3 12.7 136 TOWER 10500 43.6 35.8 122 44.0 30.4 145 WEBBER SPRINGS 9250 23.9 19.9 120 28.7 21.0 137 WILLOW CREEK PASS 9540 14.2 9.1 156 13.7 9.8 140 ----- ----- Basin wide percent of average 135 139 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.7 18.1 131 24.3 16.6 146 CASPER MTN. 7900 9.0 10.7 84 11.6 10.5 110 DEADMAN HILL 10220 16.6 12.4 134 17.5 12.5 140 DEER PARK 9700 15.5 13.9 112 17.2 17.1 101 LAPRELE CREEK 8375 9.9 8.5 116 11.2 9.5 118 RENO HILL 8400 11.5 9.8 117 13.4 10.9 123 ROACH 9700 16.5 13.3 124 20.0 14.0 143 SAND LAKE 10050 28.5 23.7 120 27.1 18.4 147 SOUTH PASS 9040 13.8 13.5 102 11.8 14.4 82 WINDY PEAK 7900 8.2 5.7 144 10.5 8.1 130 ----- ----- Basin wide percent of average 118 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.1 * 10.7 11.7 91 DIVIDE PEAK 8880 17.2 14.9 115 21.3 16.2 131 OLD BATTLE 10000 33.1 24.7 134 27.8 26.9 103 SANDSTONE RS 8150 11.4 11.8 97 -M 14.9 * WHISKEY PARK 8950 -M 22.4 * 31.7 22.4 142 ----- ----- Basin wide percent of average 120 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.6 11.5 101 11.9 10.8 110 BLIND BULL SUM 8650 22.5 21.8 103 16.0 18.2 88 EAST RIM DIVIDE 7930 11.8 10.4 113 10.3 9.7 106 ELKHART PARK G.S. 9400 10.2 10.5 97 10.2 10.4 98 GROS VENTRE SUMMIT 8750 11.9 10.9 109 11.6 10.2 114 GUNSIGHT PASS 9820 13.3 -M * 13.3 -M * KENDALL R.S. 7740 10.1 11.7 86 11.8 11.9 99 LOOMIS PARK 8240 15.2 13.7 111 16.0 14.1 113 NEW FORK LAKE 8340 9.9 9.2 108 9.2 9.2 100 POCKET CREEK 9360 8.9 -M * 11.4 -M * SNIDER BASIN 8060 15.8 11.8 134 15.6 13.1 119 SPRING CREEK DIVIDE 9000 27.0 21.0 129 26.3 21.5 122 TRIPLE PEAK 8500 23.8 19.8 120 25.7 19.6 131 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 12.9 10.3 125 12.2 9.9 123 HEWINTA 9519 10.0 8.5 118 13.5 11.0 123 HICKERSON PARK 9145 6.0 5.5 109 7.7 5.9 131 HOLE-IN-ROCK 9150 6.6 5.3 125 8.2 5.5 149 INDIAN CREEK 9425 24.5 21.0 117 22.3 20.1 111 KELLEY R.S. 8180 16.3 13.2 123 19.1 16.4 116 STEEL CREEK PARK 10200 13.6 11.9 114 16.3 12.2 134 ----- ----- Basin wide percent of average 119 123 UPPER BEAR RIVER BUG LAKE 7950 22.3 16.2 138 22.2 15.3 145 HAYDEN FORK 9212 17.7 12.3 144 23.7 16.2 146 KELLEY R.S. 8180 16.3 13.2 123 19.1 16.4 116 LILY LAKE 9156 15.1 10.2 148 17.3 13.6 127 MONTE CRISTO 8960 27.4 23.2 118 27.5 20.0 138 SALT RIVER SUMMIT 7760 13.4 11.5 117 17.4 15.0 116 TRIAL LAKE 9992 27.8 19.4 143 26.8 19.3 139 ----- ----- Basin wide percent of average 132 133 ----------------------------------------------------------------------------- -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.