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 16 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.6 14.5 101 17.5 16.8 104 COTTONWOOD CREEK 7670 19.1 16.2 118 26.2 20.8 126 GRAND TARGHEE 9260 35.5 -M * 25.7 -M * GRANITE CREEK 6770 14.3 14.3 100 16.8 15.6 108 GRASSY LAKE 7265 25.5 26.4 97 28.5 28.1 101 GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.1 9.7 114 GUNSIGHT PASS 9820 12.7 -M * 12.8 -M * LEWIS LAKE DIVIDE 7850 24.2 26.6 91 25.4 28.2 90 PHILLIPS BENCH 8200 21.9 21.3 103 23.2 22.1 105 SALT RIVER SUMMIT 7760 12.1 10.9 111 16.3 14.2 115 SNAKE RIVER STATION 6920 -M 14.7 * -M 17.6 * SPRING CREEK DIVIDE 9000 25.5 19.8 129 25.2 20.4 124 THUMB DIVIDE 7980 14.2 13.6 104 14.5 14.3 101 TOGWOTEE PASS 9580 21.6 18.9 114 23.0 18.8 122 TWO OCEAN PLATEAU 9240 24.1 21.3 113 20.4 20.9 98 WILLOW CREEK 8380 24.1 22.9 105 29.3 24.4 120 ----- ----- Basin wide percent of average 106 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 18.7 18.3 102 18.3 15.6 117 BLACK BEAR 8170 30.8 29.5 104 30.2 29.7 102 CANYON 7870 11.7 10.2 115 13.4 11.9 113 FISHER CREEK 9100 29.1 26.9 108 28.6 27.6 104 MADISON PLATEAU 7750 19.1 18.7 102 21.0 19.8 106 NORTHEAST ENTRANCE 7350 9.7 8.9 109 11.6 9.9 117 PARKER PEAK 9400 21.0 16.6 127 19.0 12.4 153 SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126 THUMB DIVIDE 7980 14.2 13.6 104 14.5 14.3 101 TWO OCEAN PLATEAU 9240 24.1 21.3 113 20.4 20.9 98 WHISKEY CREEK 6800 13.3 12.8 104 16.3 15.6 104 WHITE MILL 8700 20.1 18.3 110 20.8 20.5 101 WOLVERINE 7650 11.4 9.7 118 11.1 10.2 109 ----- ----- Basin wide percent of average 108 109 WIND RIVER BURROUGHS CREEK 8750 10.8 11.4 95 11.3 12.5 90 CASTLE CREEK 8400 4.6 -M * 5.4 -M * COLD SPRINGS 9630 6.3 6.5 97 6.5 7.7 84 DEER PARK 9700 14.5 13.8 105 15.8 16.3 97 HOBBS PARK 10100 10.0 10.8 93 9.1 9.0 101 LITTLE WARM 9370 8.6 8.6 100 9.0 10.0 90 SOUTH PASS 9040 12.2 12.6 97 10.7 13.7 78 ST. LAWRENCE ALT 8620 3.8 5.3 72 5.0 6.4 78 TOGWOTEE PASS 9580 21.6 18.9 114 23.0 18.8 122 TOWNSEND CREEK 8700 -M 6.3 * -M 8.1 * ----- ----- Basin wide percent of average 100 96 BIGHORN BASIN BALD MTN. 9380 17.7 14.6 121 14.3 13.0 110 BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 6.0 108 BLACKWATER 9780 18.9 18.5 102 18.5 15.7 118 BONE SPRINGS DIV 9350 14.1 11.8 119 11.8 10.6 111 EVENING STAR 9200 23.4 22.6 104 26.3 19.8 133 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90 KIRWIN 9550 8.3 8.4 99 9.3 8.4 111 MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76 MIDDLE POWDER 7760 7.1 8.1 88 8.9 8.9 100 OWL CREEK 8975 3.9 3.7 105 4.1 4.1 100 POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.2 135 SHELL CREEK 9580 12.5 10.8 116 11.1 10.1 110 SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126 SYLVAN ROAD 7120 11.5 10.3 112 15.4 14.6 105 TIMBER CREEK 7950 2.8 3.9 72 3.5 4.9 71 YOUNTS PEAK 8350 12.6 13.3 95 11.1 12.5 89 ----- ----- Basin wide percent of average 104 110 SHOSHONE RIVER BLACKWATER 9780 18.9 18.5 102 18.5 15.7 118 EVENING STAR 9200 23.4 22.6 104 26.3 19.8 133 KIRWIN 9550 8.3 8.4 99 9.3 8.4 111 MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76 SYLVAN LAKE 8420 17.3 17.0 102 20.6 16.4 126 SYLVAN ROAD 7120 11.5 10.3 112 15.4 14.6 105 YOUNTS PEAK 8350 12.6 13.3 95 11.1 12.5 89 ----- ----- Basin wide percent of average 97 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 6.0 108 BIG GOOSE 7990 5.8 6.8 85 7.5 6.2 121 BONE SPRINGS DIV 9350 14.1 11.8 119 11.8 10.6 111 BURGESS JUNCTION 7880 8.0 8.1 99 8.9 8.7 102 CLOUD PEAK RESERVOIR 9860 11.4 9.0 127 11.0 9.0 122 DOME LAKE 8880 8.5 8.8 97 9.6 9.5 101 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 7.0 90 HANSEN SAWMILL 8360 4.6 4.6 100 5.2 5.8 90 LITTLE GOOSE 8870 6.4 -M * 10.6 -M * MIDDLE POWDER 7760 7.1 8.1 88 8.9 8.9 100 POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.2 135 SOLDIER PARK 8720 4.9 -M * 6.3 -M * SUCKER CREEK 8880 9.7 8.1 120 10.7 9.6 111 TIE CREEK 6870 5.2 4.5 116 7.5 7.3 103 ----- ----- Basin wide percent of average 110 109 BELLE FOURCHE BLIND PARK 6890 7.9 6.0 132 13.6 8.5 160 COLE CANYON 5910 6.7 5.2 129 9.5 5.1 186 NORTH RAPID CREEK 6130 7.5 6.0 125 11.6 6.9 168 ----- ----- Basin wide percent of average 128 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.2 14.7 137 21.9 15.9 138 COLUMBINE 9160 25.3 19.5 130 27.1 18.8 144 DIVIDE PEAK 8880 15.7 14.2 111 19.7 15.3 129 ELK RIVER 8700 18.3 14.3 128 20.3 14.4 141 JOE WRIGHT 10120 21.6 15.7 138 27.1 18.2 149 NORTH FRENCH CREEK 10130 33.5 20.5 163 -M 18.3 * OLD BATTLE 10000 31.5 23.2 136 28.0 25.3 111 SAGE CREEK BASIN 7850 14.9 8.2 182 13.9 8.9 156 SOUTH BRUSH CREEK 8440 13.5 8.6 157 16.8 12.2 138 TOWER 10500 41.3 34.1 121 42.1 28.7 147 WEBBER SPRINGS 9250 22.1 18.6 119 26.9 20.0 135 WILLOW CREEK PASS 9540 13.4 8.6 156 13.2 9.3 142 ----- ----- Basin wide percent of average 136 137 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.7 17.2 132 23.6 15.8 149 CASPER MTN. 7900 8.7 10.2 85 11.0 10.0 110 DEADMAN HILL 10220 15.5 11.8 131 16.8 11.9 141 DEER PARK 9700 14.5 13.8 105 15.8 16.3 97 LAPRELE CREEK 8375 9.4 8.1 116 10.7 9.0 119 RENO HILL 8400 11.0 9.3 118 13.0 10.3 126 ROACH 9700 15.8 12.6 125 19.1 13.1 146 SAND LAKE 10050 27.4 22.4 122 26.0 17.5 149 SOUTH PASS 9040 12.2 12.6 97 10.7 13.7 78 WINDY PEAK 7900 7.5 5.3 142 9.9 7.7 129 ----- ----- Basin wide percent of average 117 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 8.7 * 10.7 11.1 96 DIVIDE PEAK 8880 15.7 14.2 111 19.7 15.3 129 OLD BATTLE 10000 31.5 23.2 136 28.0 25.3 111 SANDSTONE RS 8150 10.7 11.1 96 -M 14.1 * WHISKEY PARK 8950 -M 21.2 * 30.0 21.4 140 ----- ----- Basin wide percent of average 119 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.1 10.9 93 10.5 10.2 103 BLIND BULL SUM 8650 21.6 20.7 104 15.5 17.2 90 EAST RIM DIVIDE 7930 11.0 9.8 112 9.5 9.1 104 ELKHART PARK G.S. 9400 9.3 10.0 93 9.3 9.9 94 GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.1 9.7 114 GUNSIGHT PASS 9820 12.7 -M * 12.8 -M * KENDALL R.S. 7740 9.2 11.1 83 10.9 11.1 98 LOOMIS PARK 8240 13.8 12.9 107 15.0 13.3 113 NEW FORK LAKE 8340 9.1 8.7 105 8.7 8.7 100 POCKET CREEK 9360 7.5 -M * 10.1 -M * SNIDER BASIN 8060 14.8 11.2 132 14.8 12.4 119 SPRING CREEK DIVIDE 9000 25.5 19.8 129 25.2 20.4 124 TRIPLE PEAK 8500 22.7 18.8 121 24.4 18.4 133 ----- ----- Basin wide percent of average 110 110 LOWER GREEN RIVER HAMS FORK 7840 11.7 9.7 121 11.9 9.4 127 HEWINTA 9519 9.1 7.9 115 12.7 10.4 122 HICKERSON PARK 9145 5.2 5.2 100 7.0 5.7 123 HOLE-IN-ROCK 9150 6.0 5.0 120 7.5 5.3 142 INDIAN CREEK 9425 23.0 19.9 116 21.2 19.0 112 KELLEY R.S. 8180 15.1 12.3 123 17.9 15.6 115 STEEL CREEK PARK 10200 12.6 11.0 115 15.4 11.5 134 ----- ----- Basin wide percent of average 116 122 UPPER BEAR RIVER BUG LAKE 7950 20.2 15.2 133 21.2 14.5 146 HAYDEN FORK 9212 16.4 11.5 143 22.5 15.3 147 KELLEY R.S. 8180 15.1 12.3 123 17.9 15.6 115 LILY LAKE 9156 13.9 9.6 145 16.5 12.8 129 MONTE CRISTO 8960 24.6 21.6 114 26.0 18.9 138 SALT RIVER SUMMIT 7760 12.1 10.9 111 16.3 14.2 115 TRIAL LAKE 9992 25.8 18.2 142 26.3 18.1 145 ----- ----- 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.