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 FRIDAY: FEBRUARY 18 , 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 14.7 100 17.8 17.0 105 COTTONWOOD CREEK 7670 20.1 16.5 122 27.1 21.1 128 GRAND TARGHEE 9260 35.5 -M * 25.7 -M * GRANITE CREEK 6770 14.6 14.6 100 16.9 15.9 106 GRASSY LAKE 7265 26.0 26.9 97 28.9 28.5 101 GROS VENTRE SUMMIT 8750 11.5 10.6 108 11.1 9.8 113 GUNSIGHT PASS 9820 12.8 -M * 13.0 -M * LEWIS LAKE DIVIDE 7850 24.8 27.0 92 25.7 28.7 90 PHILLIPS BENCH 8200 22.5 21.7 104 23.5 22.5 104 SALT RIVER SUMMIT 7760 12.6 11.1 114 16.6 14.5 114 SNAKE RIVER STATION 6920 -M 15.0 * -M 17.9 * SPRING CREEK DIVIDE 9000 25.9 20.2 128 25.5 20.7 123 THUMB DIVIDE 7980 14.6 13.8 106 14.8 14.6 101 TOGWOTEE PASS 9580 21.8 19.2 114 23.3 19.0 123 TWO OCEAN PLATEAU 9240 24.5 21.6 113 20.6 21.3 97 WILLOW CREEK 8380 24.8 23.3 106 30.1 24.8 121 ----- ----- Basin wide percent of average 107 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 18.8 18.6 101 18.3 15.8 116 BLACK BEAR 8170 31.9 30.1 106 31.2 30.2 103 CANYON 7870 12.1 10.4 116 13.5 12.1 112 FISHER CREEK 9100 29.8 27.3 109 29.0 28.0 104 MADISON PLATEAU 7750 20.0 19.1 105 21.9 20.2 108 NORTHEAST ENTRANCE 7350 10.0 9.0 111 11.7 10.0 117 PARKER PEAK 9400 21.3 16.8 127 -M 12.6 * SYLVAN LAKE 8420 17.5 17.3 101 20.8 16.6 125 THUMB DIVIDE 7980 14.6 13.8 106 14.8 14.6 101 TWO OCEAN PLATEAU 9240 24.5 21.6 113 20.6 21.3 97 WHISKEY CREEK 6800 14.0 13.1 107 16.8 15.8 106 WHITE MILL 8700 20.6 18.6 111 21.1 20.8 101 WOLVERINE 7650 11.4 9.9 115 11.0 10.4 106 ----- ----- Basin wide percent of average 109 107 WIND RIVER BURROUGHS CREEK 8750 11.0 11.6 95 11.4 12.7 90 CASTLE CREEK 8400 4.8 -M * 5.2 -M * COLD SPRINGS 9630 6.3 6.6 95 6.3 7.8 81 DEER PARK 9700 14.6 13.9 105 15.7 16.5 95 HOBBS PARK 10100 10.4 11.0 95 9.1 9.2 99 LITTLE WARM 9370 8.8 8.8 100 8.9 10.1 88 SOUTH PASS 9040 12.1 13.0 93 10.5 13.9 76 ST. LAWRENCE ALT 8620 3.6 5.4 67 5.0 6.5 77 TOGWOTEE PASS 9580 21.8 19.2 114 23.3 19.0 123 TOWNSEND CREEK 8700 6.1 6.5 94 8.2 8.2 100 ----- ----- Basin wide percent of average 99 95 BIGHORN BASIN BALD MTN. 9380 18.2 14.8 123 14.6 13.1 111 BEAR TRAP MEADOW 8200 5.8 4.0 145 6.3 6.0 105 BLACKWATER 9780 19.1 18.8 102 18.6 15.9 117 BONE SPRINGS DIV 9350 14.5 12.0 121 11.8 10.8 109 EVENING STAR 9200 23.7 23.0 103 26.5 20.1 132 GRAVE SPRINGS 8550 5.9 6.5 91 6.3 7.1 89 KIRWIN 9550 8.5 8.5 100 9.3 8.5 109 MARQUETTE 8760 1.6 6.4 25 4.7 6.9 68 MIDDLE POWDER 7760 7.0 8.2 85 8.7 9.0 97 OWL CREEK 8975 4.0 3.8 105 3.9 4.1 95 POWDER RIVER PASS 9480 10.6 8.0 133 12.3 9.3 132 SHELL CREEK 9580 12.6 10.9 116 11.4 10.2 112 SYLVAN LAKE 8420 17.5 17.3 101 20.8 16.6 125 SYLVAN ROAD 7120 11.7 10.5 111 15.5 14.7 105 TIMBER CREEK 7950 2.7 4.0 68 3.4 5.0 68 YOUNTS PEAK 8350 12.7 13.6 93 11.1 12.7 87 ----- ----- Basin wide percent of average 103 109 SHOSHONE RIVER BLACKWATER 9780 19.1 18.8 102 18.6 15.9 117 EVENING STAR 9200 23.7 23.0 103 26.5 20.1 132 KIRWIN 9550 8.5 8.5 100 9.3 8.5 109 MARQUETTE 8760 1.6 6.4 25 4.7 6.9 68 SYLVAN LAKE 8420 17.5 17.3 101 20.8 16.6 125 SYLVAN ROAD 7120 11.7 10.5 111 15.5 14.7 105 YOUNTS PEAK 8350 12.7 13.6 93 11.1 12.7 87 ----- ----- Basin wide percent of average 97 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.8 4.0 145 6.3 6.0 105 BIG GOOSE 7990 5.7 7.0 81 7.3 6.3 116 BONE SPRINGS DIV 9350 14.5 12.0 121 11.8 10.8 109 BURGESS JUNCTION 7880 8.2 8.3 99 9.0 8.8 102 CLOUD PEAK RESERVOIR 9860 11.6 9.1 127 10.6 9.1 116 DOME LAKE 8880 8.7 8.9 98 9.6 9.6 100 GRAVE SPRINGS 8550 5.9 6.5 91 6.3 7.1 89 HANSEN SAWMILL 8360 4.3 4.7 91 5.0 5.9 85 LITTLE GOOSE 8870 6.4 -M * 10.5 -M * MIDDLE POWDER 7760 7.0 8.2 85 8.7 9.0 97 POWDER RIVER PASS 9480 10.6 8.0 133 12.3 9.3 132 SOLDIER PARK 8720 4.5 -M * 6.2 -M * SUCKER CREEK 8880 9.7 8.3 117 10.7 9.8 109 TIE CREEK 6870 5.2 4.6 113 7.6 7.4 103 ----- ----- Basin wide percent of average 108 106 BELLE FOURCHE BLIND PARK 6890 7.8 6.2 126 13.5 8.6 157 COLE CANYON 5910 6.5 5.2 125 9.5 5.2 183 NORTH RAPID CREEK 6130 7.3 6.1 120 11.3 7.0 161 ----- ----- Basin wide percent of average 123 165 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.2 14.9 136 21.8 16.1 135 COLUMBINE 9160 25.6 19.8 129 27.3 19.1 143 DIVIDE PEAK 8880 16.1 14.4 112 20.3 15.5 131 ELK RIVER 8700 18.6 14.6 127 20.5 14.6 140 JOE WRIGHT 10120 21.9 15.9 138 27.4 18.4 149 NORTH FRENCH CREEK 10130 33.6 20.7 162 -M 18.5 * OLD BATTLE 10000 31.2 23.6 132 27.8 25.8 108 SAGE CREEK BASIN 7850 15.2 8.4 181 14.2 9.0 158 SOUTH BRUSH CREEK 8440 13.6 8.8 155 16.9 12.3 137 TOWER 10500 41.7 34.6 121 42.7 29.2 146 WEBBER SPRINGS 9250 22.4 19.0 118 27.3 20.3 134 WILLOW CREEK PASS 9540 13.8 8.7 159 13.4 9.5 141 ----- ----- Basin wide percent of average 135 137 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.7 17.5 130 23.6 16.0 148 CASPER MTN. 7900 8.7 10.3 84 11.2 10.1 111 DEADMAN HILL 10220 15.9 12.0 133 17.1 12.0 143 DEER PARK 9700 14.6 13.9 105 15.7 16.5 95 LAPRELE CREEK 8375 9.2 8.2 112 10.6 9.1 116 RENO HILL 8400 10.9 9.5 115 12.7 10.5 121 ROACH 9700 15.8 12.8 123 19.2 13.3 144 SAND LAKE 10050 27.4 22.8 120 26.1 17.7 147 SOUTH PASS 9040 12.1 13.0 93 10.5 13.9 76 WINDY PEAK 7900 7.4 5.4 137 9.9 7.8 127 ----- ----- Basin wide percent of average 115 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 8.8 * 10.9 11.2 97 DIVIDE PEAK 8880 16.1 14.4 112 20.3 15.5 131 OLD BATTLE 10000 31.2 23.6 132 27.8 25.8 108 SANDSTONE RS 8150 11.1 11.3 98 -M 14.3 * WHISKEY PARK 8950 -M 21.6 * 30.3 21.6 140 ----- ----- Basin wide percent of average 118 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.1 11.0 92 10.5 10.3 102 BLIND BULL SUM 8650 21.8 21.0 104 15.6 17.5 89 EAST RIM DIVIDE 7930 11.3 10.0 113 9.8 9.3 105 ELKHART PARK G.S. 9400 9.3 10.1 92 9.4 10.0 94 GROS VENTRE SUMMIT 8750 11.5 10.6 108 11.1 9.8 113 GUNSIGHT PASS 9820 12.8 -M * 13.0 -M * KENDALL R.S. 7740 9.4 11.3 83 11.2 11.3 99 LOOMIS PARK 8240 14.3 13.1 109 15.3 13.5 113 NEW FORK LAKE 8340 9.2 8.8 105 8.7 8.9 98 POCKET CREEK 9360 7.4 -M * 10.1 -M * SNIDER BASIN 8060 15.1 11.4 132 15.1 12.6 120 SPRING CREEK DIVIDE 9000 25.9 20.2 128 25.5 20.7 123 TRIPLE PEAK 8500 23.0 19.1 120 24.9 18.7 133 ----- ----- Basin wide percent of average 110 110 LOWER GREEN RIVER HAMS FORK 7840 12.1 9.9 122 11.9 9.5 125 HEWINTA 9519 9.5 8.1 117 13.1 10.6 124 HICKERSON PARK 9145 5.5 5.3 104 7.2 5.7 126 HOLE-IN-ROCK 9150 6.2 5.1 122 7.8 5.3 147 INDIAN CREEK 9425 23.5 20.2 116 21.5 19.3 111 KELLEY R.S. 8180 15.5 12.6 123 18.2 15.8 115 STEEL CREEK PARK 10200 12.9 11.3 114 15.8 11.7 135 ----- ----- Basin wide percent of average 118 123 UPPER BEAR RIVER BUG LAKE 7950 20.9 15.5 135 21.6 14.7 147 HAYDEN FORK 9212 17.0 11.7 145 23.1 15.6 148 KELLEY R.S. 8180 15.5 12.6 123 18.2 15.8 115 LILY LAKE 9156 14.2 9.8 145 17.0 13.0 131 MONTE CRISTO 8960 25.3 22.1 114 26.5 19.2 138 SALT RIVER SUMMIT 7760 12.6 11.1 114 16.6 14.5 114 TRIAL LAKE 9992 26.1 18.6 140 26.3 18.5 142 ----- ----- Basin wide percent of average 130 134 ----------------------------------------------------------------------------- -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.