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 25 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.2 15.5 105 19.2 18.0 107 COTTONWOOD CREEK 7670 21.1 17.6 120 28.4 22.2 128 GRAND TARGHEE 9260 38.4 -M * 26.1 -M * GRANITE CREEK 6770 16.1 15.5 104 18.0 16.8 107 GRASSY LAKE 7265 29.3 28.4 103 31.7 30.0 106 GROS VENTRE SUMMIT 8750 12.2 11.1 110 11.7 10.4 113 GUNSIGHT PASS 9820 13.5 -M * 13.5 -M * LEWIS LAKE DIVIDE 7850 28.1 28.6 98 27.6 30.4 91 PHILLIPS BENCH 8200 24.3 23.0 106 25.1 23.8 105 SALT RIVER SUMMIT 7760 13.7 11.7 117 17.7 15.3 116 SNAKE RIVER STATION 6920 10.9 15.9 69 20.8 18.9 110 SPRING CREEK DIVIDE 9000 27.4 21.3 129 26.7 21.8 122 THUMB DIVIDE 7980 16.2 14.7 110 16.1 15.4 105 TOGWOTEE PASS 9580 22.9 20.1 114 24.3 20.0 122 TWO OCEAN PLATEAU 9240 -M 22.6 * -M 22.5 * WILLOW CREEK 8380 26.9 24.5 110 31.8 26.1 122 ----- ----- Basin wide percent of average 107 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.1 19.4 104 19.4 16.6 117 BLACK BEAR 8170 34.8 32.0 109 33.7 32.0 105 CANYON 7870 13.4 11.1 121 14.4 12.6 114 FISHER CREEK 9100 32.0 28.8 111 30.7 29.5 104 MADISON PLATEAU 7750 22.1 20.2 109 23.9 21.3 112 NORTHEAST ENTRANCE 7350 10.8 9.5 114 12.3 10.5 117 PARKER PEAK 9400 22.8 17.8 128 20.3 13.3 153 SYLVAN LAKE 8420 19.2 18.4 104 22.4 17.4 129 THUMB DIVIDE 7980 16.2 14.7 110 16.1 15.4 105 TWO OCEAN PLATEAU 9240 -M 22.6 * -M 22.5 * WHISKEY CREEK 6800 15.7 14.0 112 18.4 16.7 110 WHITE MILL 8700 21.8 19.7 111 22.1 22.0 100 WOLVERINE 7650 12.5 10.4 120 11.7 10.9 107 ----- ----- Basin wide percent of average 112 112 WIND RIVER BURROUGHS CREEK 8750 11.8 12.4 95 12.3 13.3 92 CASTLE CREEK 8400 5.2 -M * 5.9 -M * COLD SPRINGS 9630 6.7 7.1 94 6.7 8.2 82 DEER PARK 9700 15.6 14.3 109 17.4 17.3 101 HOBBS PARK 10100 11.4 11.7 97 10.2 9.6 106 LITTLE WARM 9370 9.4 9.3 101 9.4 10.6 89 SOUTH PASS 9040 14.0 13.8 101 11.9 14.6 82 ST. LAWRENCE ALT 8620 4.4 5.8 76 5.6 6.8 82 TOGWOTEE PASS 9580 22.9 20.1 114 24.3 20.0 122 TOWNSEND CREEK 8700 6.9 6.8 101 9.1 8.6 106 ----- ----- Basin wide percent of average 102 98 BIGHORN BASIN BALD MTN. 9380 19.2 15.6 123 15.7 13.7 115 BEAR TRAP MEADOW 8200 6.1 4.2 145 6.6 6.2 106 BLACKWATER 9780 20.4 20.1 101 19.7 16.7 118 BONE SPRINGS DIV 9350 15.5 12.8 121 12.6 11.3 112 EVENING STAR 9200 25.6 24.4 105 27.9 21.1 132 GRAVE SPRINGS 8550 6.4 6.9 93 6.7 7.5 89 KIRWIN 9550 8.9 9.0 99 9.9 8.9 111 MARQUETTE 8760 1.8 6.8 26 5.2 7.3 71 MIDDLE POWDER 7760 7.4 8.7 85 9.1 9.3 98 OWL CREEK 8975 4.3 4.0 108 4.2 4.3 98 POWDER RIVER PASS 9480 11.4 8.5 134 13.1 9.7 135 SHELL CREEK 9580 13.4 11.6 116 12.1 10.6 114 SYLVAN LAKE 8420 19.2 18.4 104 22.4 17.4 129 SYLVAN ROAD 7120 13.1 11.0 119 16.8 15.3 110 TIMBER CREEK 7950 2.8 4.1 68 3.6 5.2 69 YOUNTS PEAK 8350 13.4 14.4 93 11.6 13.2 88 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 20.4 20.1 101 19.7 16.7 118 EVENING STAR 9200 25.6 24.4 105 27.9 21.1 132 KIRWIN 9550 8.9 9.0 99 9.9 8.9 111 MARQUETTE 8760 1.8 6.8 26 5.2 7.3 71 SYLVAN LAKE 8420 19.2 18.4 104 22.4 17.4 129 SYLVAN ROAD 7120 13.1 11.0 119 16.8 15.3 110 YOUNTS PEAK 8350 13.4 14.4 93 11.6 13.2 88 ----- ----- Basin wide percent of average 98 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 4.2 145 6.6 6.2 106 BIG GOOSE 7990 5.9 7.4 80 7.8 6.6 118 BONE SPRINGS DIV 9350 15.5 12.8 121 12.6 11.3 112 BURGESS JUNCTION 7880 8.6 8.7 99 9.5 9.2 103 CLOUD PEAK RESERVOIR 9860 12.4 9.7 128 11.8 9.5 124 DOME LAKE 8880 9.3 9.3 100 10.1 9.9 102 GRAVE SPRINGS 8550 6.4 6.9 93 6.7 7.5 89 HANSEN SAWMILL 8360 5.1 5.0 102 5.8 6.1 95 LITTLE GOOSE 8870 6.8 -M * 10.8 -M * MIDDLE POWDER 7760 7.4 8.7 85 9.1 9.3 98 POWDER RIVER PASS 9480 11.4 8.5 134 13.1 9.7 135 SOLDIER PARK 8720 5.3 -M * 6.8 -M * SUCKER CREEK 8880 10.1 8.8 115 11.1 10.2 109 TIE CREEK 6870 5.6 4.7 119 8.1 7.7 105 ----- ----- Basin wide percent of average 110 109 BELLE FOURCHE BLIND PARK 6890 8.6 6.5 132 14.1 9.0 157 COLE CANYON 5910 7.0 5.5 127 10.3 5.3 194 NORTH RAPID CREEK 6130 7.9 6.5 122 12.2 7.3 167 ----- ----- Basin wide percent of average 127 169 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.6 15.6 132 21.9 16.8 130 COLUMBINE 9160 27.3 21.1 129 28.4 20.1 141 DIVIDE PEAK 8880 18.0 15.1 119 21.5 16.4 131 ELK RIVER 8700 20.0 15.5 129 21.6 15.5 139 JOE WRIGHT 10120 22.8 16.7 137 28.0 19.4 144 NORTH FRENCH CREEK 10130 35.2 21.8 161 32.2 19.5 165 OLD BATTLE 10000 33.6 25.2 133 27.8 27.3 102 SAGE CREEK BASIN 7850 16.8 8.8 191 15.4 9.5 162 SOUTH BRUSH CREEK 8440 14.6 9.5 154 17.2 12.9 133 TOWER 10500 44.4 36.3 122 44.2 30.8 144 WEBBER SPRINGS 9250 24.4 20.3 120 29.3 21.3 138 WILLOW CREEK PASS 9540 14.5 9.3 156 13.9 10.0 139 ----- ----- Basin wide percent of average 136 137 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.3 18.3 133 24.5 16.9 145 CASPER MTN. 7900 9.0 10.9 83 11.6 10.7 108 DEADMAN HILL 10220 17.0 12.5 136 17.9 12.7 141 DEER PARK 9700 15.6 14.3 109 17.4 17.3 101 LAPRELE CREEK 8375 10.1 8.6 117 11.3 9.6 118 RENO HILL 8400 11.6 10.0 116 13.5 11.1 122 ROACH 9700 16.7 13.4 125 20.2 14.2 142 SAND LAKE 10050 29.3 24.1 122 28.0 18.6 151 SOUTH PASS 9040 14.0 13.8 101 11.9 14.6 82 WINDY PEAK 7900 8.3 5.8 143 10.6 8.2 129 ----- ----- Basin wide percent of average 118 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.3 * 10.8 11.9 91 DIVIDE PEAK 8880 18.0 15.1 119 21.5 16.4 131 OLD BATTLE 10000 33.6 25.2 133 27.8 27.3 102 SANDSTONE RS 8150 11.7 12.0 98 -M 15.1 * WHISKEY PARK 8950 -M 22.8 * 31.8 22.7 140 ----- ----- Basin wide percent of average 121 117 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.7 11.7 100 12.0 10.9 110 BLIND BULL SUM 8650 23.0 22.2 104 16.2 18.4 88 EAST RIM DIVIDE 7930 12.1 10.6 114 10.4 9.8 106 ELKHART PARK G.S. 9400 10.4 10.7 97 10.4 10.6 98 GROS VENTRE SUMMIT 8750 12.2 11.1 110 11.7 10.4 113 GUNSIGHT PASS 9820 13.5 -M * 13.5 -M * KENDALL R.S. 7740 10.4 11.9 87 12.1 12.1 100 LOOMIS PARK 8240 15.6 13.9 112 16.3 14.3 114 NEW FORK LAKE 8340 10.1 9.3 109 9.3 9.3 100 POCKET CREEK 9360 9.1 -M * 11.6 -M * SNIDER BASIN 8060 16.0 12.0 133 15.8 13.3 119 SPRING CREEK DIVIDE 9000 27.4 21.3 129 26.7 21.8 122 TRIPLE PEAK 8500 24.1 20.1 120 26.1 19.9 131 ----- ----- Basin wide percent of average 112 111 LOWER GREEN RIVER HAMS FORK 7840 13.2 10.5 126 12.4 10.0 124 HEWINTA 9519 10.2 8.7 117 13.6 11.2 121 HICKERSON PARK 9145 6.1 5.6 109 7.9 6.0 132 HOLE-IN-ROCK 9150 6.6 5.4 122 8.3 5.6 148 INDIAN CREEK 9425 25.0 21.4 117 22.6 20.4 111 KELLEY R.S. 8180 16.6 13.4 124 19.4 16.6 117 STEEL CREEK PARK 10200 13.7 12.1 113 16.4 12.4 132 ----- ----- Basin wide percent of average 119 122 UPPER BEAR RIVER BUG LAKE 7950 22.6 16.4 138 22.4 15.6 144 HAYDEN FORK 9212 18.2 12.6 144 23.7 16.5 144 KELLEY R.S. 8180 16.6 13.4 124 19.4 16.6 117 LILY LAKE 9156 15.6 10.4 150 17.5 13.8 127 MONTE CRISTO 8960 27.8 23.6 118 27.8 20.4 136 SALT RIVER SUMMIT 7760 13.7 11.7 117 17.7 15.3 116 TRIAL LAKE 9992 28.4 19.8 143 27.6 19.7 140 ----- ----- Basin wide percent of average 132 132 ----------------------------------------------------------------------------- -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.