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 15 , 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 14.4 102 17.5 16.6 105 COTTONWOOD CREEK 7670 19.3 16.0 121 26.2 20.7 127 GRAND TARGHEE 9260 35.4 -M * 25.6 -M * GRANITE CREEK 6770 14.3 14.2 101 16.8 15.5 108 GRASSY LAKE 7265 25.5 26.2 97 28.6 27.9 103 GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.2 9.6 117 GUNSIGHT PASS 9820 12.6 -M * 12.8 -M * LEWIS LAKE DIVIDE 7850 24.2 26.4 92 25.5 28.0 91 PHILLIPS BENCH 8200 22.0 21.1 104 23.2 21.9 106 SALT RIVER SUMMIT 7760 12.1 10.8 112 16.3 14.1 116 SNAKE RIVER STATION 6920 -M 14.6 * -M 17.5 * SPRING CREEK DIVIDE 9000 25.4 19.7 129 25.2 20.3 124 THUMB DIVIDE 7980 14.1 13.5 104 14.5 14.2 102 TOGWOTEE PASS 9580 21.6 18.8 115 23.1 18.6 124 TWO OCEAN PLATEAU 9240 24.0 21.1 114 20.2 20.8 97 WILLOW CREEK 8380 24.0 22.7 106 29.3 24.2 121 ----- ----- Basin wide percent of average 107 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 18.7 18.2 103 18.3 15.5 118 BLACK BEAR 8170 30.8 29.1 106 30.2 29.4 103 CANYON 7870 11.6 10.1 115 13.4 11.8 114 FISHER CREEK 9100 29.2 26.6 110 28.5 27.4 104 MADISON PLATEAU 7750 19.1 18.5 103 21.1 19.7 107 NORTHEAST ENTRANCE 7350 9.8 8.8 111 11.6 9.8 118 PARKER PEAK 9400 21.1 16.4 129 19.0 12.3 154 SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126 THUMB DIVIDE 7980 14.1 13.5 104 14.5 14.2 102 TWO OCEAN PLATEAU 9240 24.0 21.1 114 20.2 20.8 97 WHISKEY CREEK 6800 13.3 12.7 105 16.3 15.4 106 WHITE MILL 8700 20.2 18.1 112 20.8 20.4 102 WOLVERINE 7650 11.5 9.7 119 11.1 10.2 109 ----- ----- Basin wide percent of average 110 110 WIND RIVER BURROUGHS CREEK 8750 10.8 11.3 96 11.4 12.4 92 CASTLE CREEK 8400 4.6 -M * 5.4 -M * COLD SPRINGS 9630 6.3 6.4 98 6.4 7.7 83 DEER PARK 9700 14.5 13.7 106 15.8 16.2 98 HOBBS PARK 10100 10.0 10.7 93 9.1 9.0 101 LITTLE WARM 9370 8.6 8.5 101 9.0 9.9 91 SOUTH PASS 9040 12.2 12.5 98 10.7 13.6 79 ST. LAWRENCE ALT 8620 3.9 5.2 75 5.0 6.3 79 TOGWOTEE PASS 9580 21.6 18.8 115 23.1 18.6 124 TOWNSEND CREEK 8700 -M 6.3 * -M 8.0 * ----- ----- Basin wide percent of average 101 97 BIGHORN BASIN BALD MTN. 9380 17.7 14.5 122 14.2 12.9 110 BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 5.9 110 BLACKWATER 9780 19.0 18.3 104 18.5 15.6 119 BONE SPRINGS DIV 9350 14.1 11.7 121 11.8 10.6 111 EVENING STAR 9200 23.4 22.3 105 26.2 19.6 134 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 6.9 91 KIRWIN 9550 8.3 8.3 100 9.3 8.3 112 MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76 MIDDLE POWDER 7760 7.2 8.1 89 8.9 8.9 100 OWL CREEK 8975 4.0 3.7 108 4.0 4.0 100 POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.1 136 SHELL CREEK 9580 12.5 10.7 117 11.1 10.1 110 SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126 SYLVAN ROAD 7120 11.5 10.2 113 15.4 14.5 106 TIMBER CREEK 7950 2.8 3.9 72 3.4 4.9 69 YOUNTS PEAK 8350 12.5 13.2 95 11.1 12.4 90 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 19.0 18.3 104 18.5 15.6 119 EVENING STAR 9200 23.4 22.3 105 26.2 19.6 134 KIRWIN 9550 8.3 8.3 100 9.3 8.3 112 MARQUETTE 8760 1.9 6.3 30 5.2 6.8 76 SYLVAN LAKE 8420 17.3 16.7 104 20.6 16.3 126 SYLVAN ROAD 7120 11.5 10.2 113 15.4 14.5 106 YOUNTS PEAK 8350 12.5 13.2 95 11.1 12.4 90 ----- ----- Basin wide percent of average 99 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.0 3.9 154 6.5 5.9 110 BIG GOOSE 7990 5.8 6.8 85 7.5 6.2 121 BONE SPRINGS DIV 9350 14.1 11.7 121 11.8 10.6 111 BURGESS JUNCTION 7880 8.0 8.1 99 8.9 8.6 103 CLOUD PEAK RESERVOIR 9860 11.5 8.9 129 11.0 8.9 124 DOME LAKE 8880 8.5 8.7 98 9.6 9.4 102 GRAVE SPRINGS 8550 6.1 6.5 94 6.3 6.9 91 HANSEN SAWMILL 8360 4.6 4.6 100 5.2 5.7 91 LITTLE GOOSE 8870 6.4 -M * 10.6 -M * MIDDLE POWDER 7760 7.2 8.1 89 8.9 8.9 100 POWDER RIVER PASS 9480 10.5 7.9 133 12.4 9.1 136 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 5.3 4.5 118 7.6 7.3 104 ----- ----- Basin wide percent of average 111 110 BELLE FOURCHE BLIND PARK 6890 7.9 5.9 134 13.6 8.5 160 COLE CANYON 5910 6.7 5.1 131 9.5 5.1 186 NORTH RAPID CREEK 6130 7.5 5.9 127 11.6 6.9 168 ----- ----- Basin wide percent of average 131 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.3 14.7 138 21.8 15.8 138 COLUMBINE 9160 25.0 19.3 130 27.0 18.6 145 DIVIDE PEAK 8880 15.7 14.1 111 19.7 15.2 130 ELK RIVER 8700 18.2 14.2 128 20.3 14.3 142 JOE WRIGHT 10120 21.6 15.5 139 27.1 18.0 151 NORTH FRENCH CREEK 10130 33.4 20.3 165 -M 18.1 * OLD BATTLE 10000 31.0 23.0 135 27.9 25.1 111 SAGE CREEK BASIN 7850 14.9 8.2 182 13.9 8.8 158 SOUTH BRUSH CREEK 8440 13.4 8.6 156 16.8 12.1 139 TOWER 10500 40.9 33.8 121 42.1 28.5 148 WEBBER SPRINGS 9250 22.0 18.4 120 26.9 19.9 135 WILLOW CREEK PASS 9540 13.5 8.5 159 13.2 9.3 142 ----- ----- Basin wide percent of average 136 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.7 17.1 133 23.6 15.7 150 CASPER MTN. 7900 8.7 10.1 86 11.0 9.9 111 DEADMAN HILL 10220 15.4 11.7 132 16.8 11.8 142 DEER PARK 9700 14.5 13.7 106 15.8 16.2 98 LAPRELE CREEK 8375 9.4 8.0 118 10.8 9.0 120 RENO HILL 8400 11.0 9.3 118 13.0 10.3 126 ROACH 9700 15.8 12.5 126 19.1 13.0 147 SAND LAKE 10050 27.3 22.2 123 25.9 17.4 149 SOUTH PASS 9040 12.2 12.5 98 10.7 13.6 79 WINDY PEAK 7900 7.5 5.3 142 9.9 7.6 130 ----- ----- Basin wide percent of average 118 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 8.7 * 10.8 11.0 98 DIVIDE PEAK 8880 15.7 14.1 111 19.7 15.2 130 OLD BATTLE 10000 31.0 23.0 135 27.9 25.1 111 SANDSTONE RS 8150 10.7 11.1 96 -M 14.0 * WHISKEY PARK 8950 -M 21.1 * 29.9 21.3 140 ----- ----- Basin wide percent of average 119 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.1 10.8 94 10.5 10.1 104 BLIND BULL SUM 8650 21.5 20.6 104 15.5 17.1 91 EAST RIM DIVIDE 7930 11.0 9.7 113 9.6 9.1 105 ELKHART PARK G.S. 9400 9.3 9.9 94 9.3 9.8 95 GROS VENTRE SUMMIT 8750 11.3 10.4 109 11.2 9.6 117 GUNSIGHT PASS 9820 12.6 -M * 12.8 -M * KENDALL R.S. 7740 9.2 11.0 84 10.9 11.0 99 LOOMIS PARK 8240 13.8 12.7 109 15.0 13.2 114 NEW FORK LAKE 8340 9.1 8.6 106 8.6 8.7 99 POCKET CREEK 9360 7.4 -M * 10.1 -M * SNIDER BASIN 8060 14.8 11.1 133 14.9 12.3 121 SPRING CREEK DIVIDE 9000 25.4 19.7 129 25.2 20.3 124 TRIPLE PEAK 8500 22.7 18.6 122 24.5 18.3 134 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 11.7 9.6 122 11.9 9.3 128 HEWINTA 9519 9.1 7.8 117 12.7 10.3 123 HICKERSON PARK 9145 5.1 5.1 100 6.7 5.6 120 HOLE-IN-ROCK 9150 5.9 4.9 120 7.5 5.2 144 INDIAN CREEK 9425 22.8 19.7 116 21.2 18.8 113 KELLEY R.S. 8180 15.0 12.2 123 17.9 15.4 116 STEEL CREEK PARK 10200 12.6 10.9 116 15.4 11.4 135 ----- ----- Basin wide percent of average 117 123 UPPER BEAR RIVER BUG LAKE 7950 20.2 15.1 134 21.2 14.4 147 HAYDEN FORK 9212 16.3 11.4 143 22.5 15.2 148 KELLEY R.S. 8180 15.0 12.2 123 17.9 15.4 116 LILY LAKE 9156 13.9 9.5 146 16.5 12.8 129 MONTE CRISTO 8960 24.5 21.4 114 26.0 18.8 138 SALT RIVER SUMMIT 7760 12.1 10.8 112 16.3 14.1 116 TRIAL LAKE 9992 25.6 18.0 142 26.3 18.0 146 ----- ----- Basin wide percent of average 130 135 ----------------------------------------------------------------------------- -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.