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 SUNDAY: FEBRUARY 27 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.3 15.7 104 19.4 18.2 107 COTTONWOOD CREEK 7670 21.5 17.9 120 28.9 22.5 128 GRAND TARGHEE 9260 38.8 -M * 26.2 -M * GRANITE CREEK 6770 16.7 15.7 106 18.4 17.1 108 GRASSY LAKE 7265 29.6 28.9 102 31.9 30.4 105 GROS VENTRE SUMMIT 8750 12.4 11.2 111 12.0 10.5 114 GUNSIGHT PASS 9820 13.7 -M * 13.7 -M * LEWIS LAKE DIVIDE 7850 28.5 29.0 98 28.0 30.8 91 PHILLIPS BENCH 8200 24.6 23.4 105 25.4 24.1 105 SALT RIVER SUMMIT 7760 14.1 11.9 118 18.1 15.5 117 SNAKE RIVER STATION 6920 -M 16.2 * 21.0 19.1 110 SPRING CREEK DIVIDE 9000 28.3 21.7 130 27.4 22.1 124 THUMB DIVIDE 7980 16.4 15.0 109 16.2 15.7 103 TOGWOTEE PASS 9580 23.2 20.3 114 24.6 20.3 121 TWO OCEAN PLATEAU 9240 -M 22.9 * -M 22.9 * WILLOW CREEK 8380 27.4 24.9 110 32.2 26.5 122 ----- ----- Basin wide percent of average 110 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.3 19.5 104 19.5 16.8 116 BLACK BEAR 8170 34.9 32.4 108 33.8 32.5 104 CANYON 7870 13.5 11.2 121 14.4 12.8 113 FISHER CREEK 9100 32.1 29.1 110 30.7 30.0 102 MADISON PLATEAU 7750 22.1 20.4 108 24.0 21.6 111 NORTHEAST ENTRANCE 7350 10.9 9.6 114 12.4 10.6 117 PARKER PEAK 9400 23.0 18.0 128 -M 13.5 * SYLVAN LAKE 8420 19.4 18.6 104 22.6 17.6 128 THUMB DIVIDE 7980 16.4 15.0 109 16.2 15.7 103 TWO OCEAN PLATEAU 9240 -M 22.9 * -M 22.9 * WHISKEY CREEK 6800 15.8 14.1 112 18.4 17.0 108 WHITE MILL 8700 21.9 19.9 110 22.3 22.3 100 WOLVERINE 7650 12.4 10.5 118 11.8 11.0 107 ----- ----- Basin wide percent of average 111 109 WIND RIVER BURROUGHS CREEK 8750 12.1 12.6 96 12.6 13.5 93 CASTLE CREEK 8400 5.5 -M * 6.1 -M * COLD SPRINGS 9630 7.0 7.2 97 6.6 8.3 80 DEER PARK 9700 16.2 14.5 112 18.6 17.5 106 HOBBS PARK 10100 12.2 11.8 103 10.6 9.7 109 LITTLE WARM 9370 9.8 9.4 104 9.7 10.7 91 SOUTH PASS 9040 15.1 13.9 109 13.1 14.7 89 ST. LAWRENCE ALT 8620 4.3 5.9 73 5.8 6.9 84 TOGWOTEE PASS 9580 23.2 20.3 114 24.6 20.3 121 TOWNSEND CREEK 8700 7.5 6.9 109 9.5 8.7 109 ----- ----- Basin wide percent of average 105 101 BIGHORN BASIN BALD MTN. 9380 19.3 15.8 122 15.7 13.9 113 BEAR TRAP MEADOW 8200 6.2 4.3 144 6.4 6.3 102 BLACKWATER 9780 20.6 20.2 102 20.0 16.9 118 BONE SPRINGS DIV 9350 15.7 13.0 121 12.8 11.4 112 EVENING STAR 9200 25.7 24.7 104 28.1 21.4 131 GRAVE SPRINGS 8550 6.6 7.2 92 6.8 7.6 89 KIRWIN 9550 9.0 9.1 99 10.0 9.0 111 MARQUETTE 8760 1.8 6.8 26 4.7 7.4 64 MIDDLE POWDER 7760 7.6 8.9 85 9.2 9.4 98 OWL CREEK 8975 4.5 4.1 110 4.5 4.3 105 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 9.8 135 SHELL CREEK 9580 13.5 11.7 115 12.2 10.7 114 SYLVAN LAKE 8420 19.4 18.6 104 22.6 17.6 128 SYLVAN ROAD 7120 13.4 11.3 119 17.0 15.4 110 TIMBER CREEK 7950 3.1 4.2 74 3.7 5.3 70 YOUNTS PEAK 8350 13.7 14.5 94 11.7 13.4 87 ----- ----- Basin wide percent of average 105 110 SHOSHONE RIVER BLACKWATER 9780 20.6 20.2 102 20.0 16.9 118 EVENING STAR 9200 25.7 24.7 104 28.1 21.4 131 KIRWIN 9550 9.0 9.1 99 10.0 9.0 111 MARQUETTE 8760 1.8 6.8 26 4.7 7.4 64 SYLVAN LAKE 8420 19.4 18.6 104 22.6 17.6 128 SYLVAN ROAD 7120 13.4 11.3 119 17.0 15.4 110 YOUNTS PEAK 8350 13.7 14.5 94 11.7 13.4 87 ----- ----- Basin wide percent of average 98 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.2 4.3 144 6.4 6.3 102 BIG GOOSE 7990 6.0 7.5 80 7.7 6.7 115 BONE SPRINGS DIV 9350 15.7 13.0 121 12.8 11.4 112 BURGESS JUNCTION 7880 8.7 8.9 98 9.6 9.3 103 CLOUD PEAK RESERVOIR 9860 12.7 9.9 128 11.4 9.6 119 DOME LAKE 8880 9.8 9.5 103 10.2 10.0 102 GRAVE SPRINGS 8550 6.6 7.2 92 6.8 7.6 89 HANSEN SAWMILL 8360 5.2 5.1 102 5.8 6.2 94 LITTLE GOOSE 8870 6.8 -M * 11.0 -M * MIDDLE POWDER 7760 7.6 8.9 85 9.2 9.4 98 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 9.8 135 SOLDIER PARK 8720 5.5 -M * 6.8 -M * SUCKER CREEK 8880 10.1 9.0 112 11.3 10.3 110 TIE CREEK 6870 5.6 4.9 114 8.0 7.8 103 ----- ----- Basin wide percent of average 109 108 BELLE FOURCHE BLIND PARK 6890 8.6 7.0 123 14.4 9.1 158 COLE CANYON 5910 6.9 5.6 123 10.3 5.4 191 NORTH RAPID CREEK 6130 7.9 6.6 120 12.3 7.3 168 ----- ----- Basin wide percent of average 122 170 UPPER N. PLATTE RIVER CINNABAR PARK 9574 21.1 15.8 134 22.0 17.0 129 COLUMBINE 9160 27.9 21.4 130 29.2 20.4 143 DIVIDE PEAK 8880 18.7 15.3 122 22.6 16.7 135 ELK RIVER 8700 21.0 15.7 134 22.3 15.7 142 JOE WRIGHT 10120 23.7 16.9 140 28.0 19.7 142 NORTH FRENCH CREEK 10130 36.1 22.1 163 32.2 19.8 163 OLD BATTLE 10000 34.9 25.6 136 27.9 27.8 100 SAGE CREEK BASIN 7850 17.2 8.9 193 15.7 9.7 162 SOUTH BRUSH CREEK 8440 15.2 9.7 157 18.3 13.1 140 TOWER 10500 45.3 36.8 123 45.0 31.3 144 WEBBER SPRINGS 9250 25.4 20.7 123 30.3 21.6 140 WILLOW CREEK PASS 9540 15.4 9.4 164 14.6 10.1 145 ----- ----- Basin wide percent of average 138 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.1 18.6 135 25.6 17.1 150 CASPER MTN. 7900 9.4 11.1 85 12.0 10.8 111 DEADMAN HILL 10220 17.9 12.7 141 18.8 13.0 145 DEER PARK 9700 16.2 14.5 112 18.6 17.5 106 LAPRELE CREEK 8375 10.6 8.7 122 11.8 9.8 120 RENO HILL 8400 12.0 10.1 119 14.0 11.3 124 ROACH 9700 17.4 13.6 128 20.9 14.5 144 SAND LAKE 10050 30.2 24.5 123 28.7 18.9 152 SOUTH PASS 9040 15.1 13.9 109 13.1 14.7 89 WINDY PEAK 7900 8.8 5.8 152 11.1 8.3 134 ----- ----- Basin wide percent of average 122 128 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.4 * 11.2 12.1 93 DIVIDE PEAK 8880 18.7 15.3 122 22.6 16.7 135 OLD BATTLE 10000 34.9 25.6 136 27.9 27.8 100 SANDSTONE RS 8150 12.2 12.2 100 -M 15.3 * WHISKEY PARK 8950 -M 23.2 * 32.9 23.0 143 ----- ----- Basin wide percent of average 124 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.4 11.9 104 12.7 11.1 114 BLIND BULL SUM 8650 23.4 22.5 104 16.6 18.7 89 EAST RIM DIVIDE 7930 12.4 10.8 115 10.7 10.0 107 ELKHART PARK G.S. 9400 10.6 10.9 97 10.6 10.7 99 GROS VENTRE SUMMIT 8750 12.4 11.2 111 12.0 10.5 114 GUNSIGHT PASS 9820 13.7 -M * 13.7 -M * KENDALL R.S. 7740 10.8 12.1 89 12.4 12.2 102 LOOMIS PARK 8240 16.0 14.1 113 16.8 14.5 116 NEW FORK LAKE 8340 10.2 9.4 109 9.5 9.4 101 POCKET CREEK 9360 9.7 -M * 12.2 -M * SNIDER BASIN 8060 16.7 12.2 137 16.5 13.5 122 SPRING CREEK DIVIDE 9000 28.3 21.7 130 27.4 22.1 124 TRIPLE PEAK 8500 24.6 20.4 121 26.7 20.2 132 ----- ----- Basin wide percent of average 113 112 LOWER GREEN RIVER HAMS FORK 7840 14.0 10.7 131 13.0 10.2 127 HEWINTA 9519 10.7 8.8 122 14.1 11.4 124 HICKERSON PARK 9145 6.3 5.7 111 8.0 6.1 131 HOLE-IN-ROCK 9150 6.8 5.6 121 8.4 5.7 147 INDIAN CREEK 9425 26.0 21.7 120 23.5 20.7 114 KELLEY R.S. 8180 17.3 13.6 127 20.2 16.9 120 STEEL CREEK PARK 10200 14.2 12.3 115 16.8 12.6 133 ----- ----- Basin wide percent of average 122 124 UPPER BEAR RIVER BUG LAKE 7950 24.2 16.7 145 22.8 15.8 144 HAYDEN FORK 9212 19.7 12.8 154 25.3 16.7 151 KELLEY R.S. 8180 17.3 13.6 127 20.2 16.9 120 LILY LAKE 9156 16.5 10.6 156 18.5 14.0 132 MONTE CRISTO 8960 29.2 24.1 121 29.7 20.7 143 SALT RIVER SUMMIT 7760 14.1 11.9 118 18.1 15.5 117 TRIAL LAKE 9992 30.0 20.1 149 29.4 20.0 147 ----- ----- Basin wide percent of average 138 137 ----------------------------------------------------------------------------- -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.