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 SATURDAY: FEBRUARY 19 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.8 14.8 100 17.8 17.2 103 COTTONWOOD CREEK 7670 20.1 16.6 121 27.2 21.3 128 GRAND TARGHEE 9260 35.6 -M * 25.8 -M * GRANITE CREEK 6770 14.7 14.7 100 17.0 16.0 106 GRASSY LAKE 7265 26.0 27.1 96 28.9 28.8 100 GROS VENTRE SUMMIT 8750 11.6 10.6 109 11.2 9.9 113 GUNSIGHT PASS 9820 12.9 -M * 13.0 -M * LEWIS LAKE DIVIDE 7850 25.1 27.2 92 26.1 28.9 90 PHILLIPS BENCH 8200 22.6 21.9 103 23.7 22.7 104 SALT RIVER SUMMIT 7760 12.6 11.2 113 16.7 14.6 114 SNAKE RIVER STATION 6920 -M 15.1 * -M 18.0 * SPRING CREEK DIVIDE 9000 26.0 20.3 128 25.6 20.9 122 THUMB DIVIDE 7980 14.8 13.9 106 15.0 14.7 102 TOGWOTEE PASS 9580 21.9 19.3 113 23.3 19.2 121 TWO OCEAN PLATEAU 9240 24.6 21.7 113 20.8 21.5 97 WILLOW CREEK 8380 24.8 23.4 106 30.1 25.0 120 ----- ----- Basin wide percent of average 107 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.0 18.7 102 18.5 15.9 116 BLACK BEAR 8170 32.3 30.4 106 31.6 30.4 104 CANYON 7870 12.3 10.6 116 13.5 12.1 112 FISHER CREEK 9100 30.2 27.6 109 29.4 28.2 104 MADISON PLATEAU 7750 20.2 19.3 105 22.2 20.3 109 NORTHEAST ENTRANCE 7350 10.0 9.1 110 11.8 10.1 117 PARKER PEAK 9400 21.5 17.0 126 -M 12.7 * SYLVAN LAKE 8420 17.6 17.5 101 20.9 16.8 124 THUMB DIVIDE 7980 14.8 13.9 106 15.0 14.7 102 TWO OCEAN PLATEAU 9240 24.6 21.7 113 20.8 21.5 97 WHISKEY CREEK 6800 14.2 13.3 107 17.2 16.0 108 WHITE MILL 8700 20.9 18.9 111 21.4 21.0 102 WOLVERINE 7650 11.5 10.0 115 11.0 10.5 105 ----- ----- Basin wide percent of average 109 107 WIND RIVER BURROUGHS CREEK 8750 11.0 11.8 93 11.6 12.8 91 CASTLE CREEK 8400 4.8 -M * 5.4 -M * COLD SPRINGS 9630 6.4 6.7 96 6.4 7.9 81 DEER PARK 9700 14.6 13.9 105 15.9 16.6 96 HOBBS PARK 10100 10.5 11.2 94 9.3 9.2 101 LITTLE WARM 9370 8.9 8.9 100 9.1 10.2 89 SOUTH PASS 9040 12.3 13.2 93 10.7 14.0 76 ST. LAWRENCE ALT 8620 3.8 5.4 70 5.1 6.5 78 TOGWOTEE PASS 9580 21.9 19.3 113 23.3 19.2 121 TOWNSEND CREEK 8700 6.2 6.5 95 8.3 8.3 100 ----- ----- Basin wide percent of average 99 95 BIGHORN BASIN BALD MTN. 9380 18.2 14.9 122 14.7 13.2 111 BEAR TRAP MEADOW 8200 5.9 4.0 148 6.4 6.1 105 BLACKWATER 9780 19.3 19.0 102 18.8 16.0 118 BONE SPRINGS DIV 9350 14.5 12.1 120 12.0 10.8 111 EVENING STAR 9200 23.9 23.2 103 26.8 20.2 133 GRAVE SPRINGS 8550 6.0 6.6 91 6.3 7.1 89 KIRWIN 9550 8.6 8.6 100 9.5 8.5 112 MARQUETTE 8760 1.7 6.5 26 4.8 7.0 69 MIDDLE POWDER 7760 7.1 8.3 86 8.8 9.0 98 OWL CREEK 8975 4.1 3.8 108 4.1 4.1 100 POWDER RIVER PASS 9480 10.6 8.1 131 12.4 9.3 133 SHELL CREEK 9580 12.7 11.0 115 11.4 10.3 111 SYLVAN LAKE 8420 17.6 17.5 101 20.9 16.8 124 SYLVAN ROAD 7120 11.8 10.5 112 15.6 14.8 105 TIMBER CREEK 7950 2.7 4.0 68 3.5 5.0 70 YOUNTS PEAK 8350 12.7 13.7 93 11.1 12.7 87 ----- ----- Basin wide percent of average 103 109 SHOSHONE RIVER BLACKWATER 9780 19.3 19.0 102 18.8 16.0 118 EVENING STAR 9200 23.9 23.2 103 26.8 20.2 133 KIRWIN 9550 8.6 8.6 100 9.5 8.5 112 MARQUETTE 8760 1.7 6.5 26 4.8 7.0 69 SYLVAN LAKE 8420 17.6 17.5 101 20.9 16.8 124 SYLVAN ROAD 7120 11.8 10.5 112 15.6 14.8 105 YOUNTS PEAK 8350 12.7 13.7 93 11.1 12.7 87 ----- ----- Basin wide percent of average 97 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.9 4.0 148 6.4 6.1 105 BIG GOOSE 7990 5.7 7.0 81 7.4 6.3 117 BONE SPRINGS DIV 9350 14.5 12.1 120 12.0 10.8 111 BURGESS JUNCTION 7880 8.2 8.4 98 9.1 8.9 102 CLOUD PEAK RESERVOIR 9860 11.6 9.2 126 10.7 9.2 116 DOME LAKE 8880 8.8 9.0 98 9.7 9.6 101 GRAVE SPRINGS 8550 6.0 6.6 91 6.3 7.1 89 HANSEN SAWMILL 8360 4.5 4.8 94 5.1 5.9 86 LITTLE GOOSE 8870 6.4 -M * 10.6 -M * MIDDLE POWDER 7760 7.1 8.3 86 8.8 9.0 98 POWDER RIVER PASS 9480 10.6 8.1 131 12.4 9.3 133 SOLDIER PARK 8720 4.7 -M * 6.3 -M * SUCKER CREEK 8880 9.7 8.4 115 10.8 9.8 110 TIE CREEK 6870 5.2 4.6 113 7.6 7.4 103 ----- ----- Basin wide percent of average 108 107 BELLE FOURCHE BLIND PARK 6890 7.8 6.2 126 13.5 8.7 155 COLE CANYON 5910 6.5 5.3 123 9.5 5.2 183 NORTH RAPID CREEK 6130 7.3 6.2 118 11.5 7.0 164 ----- ----- Basin wide percent of average 122 165 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.3 15.0 135 21.8 16.2 135 COLUMBINE 9160 25.8 20.0 129 27.5 19.2 143 DIVIDE PEAK 8880 16.2 14.5 112 20.3 15.7 129 ELK RIVER 8700 18.9 14.7 129 20.8 14.8 141 JOE WRIGHT 10120 22.1 16.0 138 27.7 18.6 149 NORTH FRENCH CREEK 10130 33.7 20.9 161 -M 18.6 * OLD BATTLE 10000 31.6 23.9 132 27.9 26.0 107 SAGE CREEK BASIN 7850 15.3 8.4 182 14.3 9.1 157 SOUTH BRUSH CREEK 8440 13.7 8.9 154 16.7 12.4 135 TOWER 10500 42.2 34.8 121 43.0 29.4 146 WEBBER SPRINGS 9250 22.6 19.2 118 27.6 20.4 135 WILLOW CREEK PASS 9540 13.9 8.8 158 13.5 9.5 142 ----- ----- Basin wide percent of average 135 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.0 17.6 131 23.6 16.1 147 CASPER MTN. 7900 8.7 10.4 84 11.1 10.2 109 DEADMAN HILL 10220 16.2 12.0 135 17.4 12.1 144 DEER PARK 9700 14.6 13.9 105 15.9 16.6 96 LAPRELE CREEK 8375 9.4 8.2 115 10.7 9.2 116 RENO HILL 8400 11.0 9.5 116 12.9 10.6 122 ROACH 9700 16.2 12.9 126 19.7 13.5 146 SAND LAKE 10050 27.7 23.0 120 26.3 17.8 148 SOUTH PASS 9040 12.3 13.2 93 10.7 14.0 76 WINDY PEAK 7900 7.5 5.5 136 10.0 7.8 128 ----- ----- Basin wide percent of average 116 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 8.9 * 10.9 11.3 96 DIVIDE PEAK 8880 16.2 14.5 112 20.3 15.7 129 OLD BATTLE 10000 31.6 23.9 132 27.9 26.0 107 SANDSTONE RS 8150 11.1 11.4 97 -M 14.4 * WHISKEY PARK 8950 -M 21.7 * 30.6 21.8 140 ----- ----- Basin wide percent of average 118 120 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.1 11.1 91 10.5 10.4 101 BLIND BULL SUM 8650 21.9 21.2 103 15.7 17.6 89 EAST RIM DIVIDE 7930 11.4 10.1 113 9.9 9.4 105 ELKHART PARK G.S. 9400 9.4 10.2 92 9.5 10.1 94 GROS VENTRE SUMMIT 8750 11.6 10.6 109 11.2 9.9 113 GUNSIGHT PASS 9820 12.9 -M * 13.0 -M * KENDALL R.S. 7740 9.5 11.4 83 11.2 11.4 98 LOOMIS PARK 8240 14.3 13.2 108 15.3 13.6 113 NEW FORK LAKE 8340 9.3 8.9 104 8.8 8.9 99 POCKET CREEK 9360 7.5 -M * 10.2 -M * SNIDER BASIN 8060 15.1 11.4 132 15.1 12.7 119 SPRING CREEK DIVIDE 9000 26.0 20.3 128 25.6 20.9 122 TRIPLE PEAK 8500 23.0 19.2 120 24.9 18.9 132 ----- ----- Basin wide percent of average 109 110 LOWER GREEN RIVER HAMS FORK 7840 12.2 10.0 122 11.9 9.6 124 HEWINTA 9519 9.5 8.2 116 13.1 10.7 122 HICKERSON PARK 9145 5.6 5.3 106 7.4 5.8 128 HOLE-IN-ROCK 9150 6.2 5.1 122 7.8 5.4 144 INDIAN CREEK 9425 23.5 20.4 115 21.6 19.4 111 KELLEY R.S. 8180 15.5 12.7 122 18.4 15.9 116 STEEL CREEK PARK 10200 13.0 11.4 114 15.8 11.8 134 ----- ----- Basin wide percent of average 117 122 UPPER BEAR RIVER BUG LAKE 7950 20.9 15.6 134 21.7 14.9 146 HAYDEN FORK 9212 17.1 11.9 144 23.1 15.7 147 KELLEY R.S. 8180 15.5 12.7 122 18.4 15.9 116 LILY LAKE 9156 14.4 9.8 147 17.0 13.1 130 MONTE CRISTO 8960 25.2 22.3 113 26.6 19.4 137 SALT RIVER SUMMIT 7760 12.6 11.2 113 16.7 14.6 114 TRIAL LAKE 9992 26.2 18.7 140 26.4 18.6 142 ----- ----- Basin wide percent of average 129 134 ----------------------------------------------------------------------------- -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.