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 THURSDAY: FEBRUARY 23 , 2012 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.8 15.3 110 19.9 17.7 112 COTTONWOOD CREEK 7670 16.2 17.2 94 21.2 21.9 97 EAST RIM DIVIDE 7930 9.7 10.4 93 10.3 9.7 106 GRAND TARGHEE 9260 28.4 -M * 23.2 -M * GRANITE CREEK 6770 14.0 15.2 92 14.6 16.5 88 GRASSY LAKE 7265 25.4 28.0 91 29.3 29.6 99 GROS VENTRE SUMMIT 8750 8.0 10.9 73 8.4 10.2 82 GUNSIGHT PASS 9820 9.9 -M * 10.7 -M * LEWIS LAKE DIVIDE 7850 23.6 28.1 84 27.8 29.9 93 PHILLIPS BENCH 8200 19.1 22.6 85 20.8 23.4 89 SALT RIVER SUMMIT 7760 9.5 11.5 83 10.2 15.0 68 SNAKE RIVER STATION 6920 15.4 15.6 99 20.3 18.6 109 SPRING CREEK DIVIDE 9000 19.7 21.0 94 19.9 21.5 93 THUMB DIVIDE 7980 12.0 14.4 83 13.2 15.2 87 TOGWOTEE PASS 9580 17.5 19.8 88 19.3 19.7 98 TWO OCEAN PLATEAU 9240 26.4 22.3 118 21.4 22.2 96 WILLOW CREEK 8380 21.5 24.1 89 26.5 25.7 103 ----- ----- Basin wide percent of average 92 95 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.9 19.1 104 19.5 16.4 119 BLACK BEAR 8170 26.7 31.5 85 27.7 31.5 88 CANYON 7870 9.8 10.9 90 11.2 12.5 90 FISHER CREEK 9100 26.7 28.4 94 26.0 29.1 89 MADISON PLATEAU 7750 16.1 19.9 81 19.9 21.0 95 NORTHEAST ENTRANCE 7350 8.5 9.4 90 10.3 10.4 99 PARKER PEAK 9400 18.2 17.5 104 18.1 13.1 138 SYLVAN LAKE 8420 14.7 18.1 81 19.6 17.2 114 THUMB DIVIDE 7980 12.0 14.4 83 13.2 15.2 87 TWO OCEAN PLATEAU 9240 26.4 22.3 118 21.4 22.2 96 WHISKEY CREEK 6800 11.4 13.8 83 14.5 16.5 88 WHITE MILL 8700 17.5 19.5 90 18.5 21.6 86 WOLVERINE 7650 11.8 10.3 115 11.1 10.7 104 ----- ----- Basin wide percent of average 93 97 WIND RIVER BURROUGHS CREEK 8750 12.4 12.2 102 12.6 13.1 96 CASTLE CREEK 8400 6.7 -M * 7.6 -M * COLD SPRINGS 9630 7.0 6.9 101 7.5 8.1 93 DEER PARK 9700 9.6 13.9 69 14.7 17.1 86 HOBBS PARK 10100 12.0 11.5 104 11.3 9.5 119 LITTLE WARM 9370 6.8 9.2 74 8.7 10.4 84 SOUTH PASS 9040 11.9 13.5 88 11.6 14.4 81 ST. LAWRENCE ALT 8620 4.5 5.6 80 6.5 6.7 97 TOGWOTEE PASS 9580 17.5 19.8 88 19.3 19.7 98 TOWNSEND CREEK 8700 7.5 6.7 112 9.7 8.5 114 ----- ----- Basin wide percent of average 90 95 BIGHORN BASIN BALD MTN. 9380 16.5 15.4 107 12.3 13.5 91 BEAR TRAP MEADOW 8200 6.5 4.1 159 6.7 6.2 108 BLACKWATER 9780 20.3 19.7 103 19.9 16.5 121 BONE SPRINGS DIV 9350 16.9 12.5 135 13.1 11.1 118 EVENING STAR 9200 23.2 24.0 97 25.4 20.8 122 GRAVE SPRINGS 8550 6.7 6.8 99 8.0 7.4 108 KIRWIN 9550 10.4 8.8 118 12.1 8.8 138 MARQUETTE 8760 7.9 -M * 10.9 7.2 151 MIDDLE POWDER 7760 8.2 8.6 95 8.9 9.2 97 OWL CREEK 8975 4.0 3.9 103 4.6 4.2 110 POWDER RIVER PASS 9480 9.8 8.3 118 11.6 9.6 121 SHELL CREEK 9580 15.1 11.3 134 13.2 10.5 126 SYLVAN LAKE 8420 14.7 18.1 81 19.6 17.2 114 SYLVAN ROAD 7120 11.4 10.9 105 14.9 15.1 99 TIMBER CREEK 7950 4.4 4.0 110 8.0 5.2 154 YOUNTS PEAK 8350 13.9 14.2 98 13.3 13.1 102 ----- ----- Basin wide percent of average 107 115 SHOSHONE RIVER BLACKWATER 9780 20.3 19.7 103 19.9 16.5 121 EVENING STAR 9200 23.2 24.0 97 25.4 20.8 122 KIRWIN 9550 10.4 8.8 118 12.1 8.8 138 MARQUETTE 8760 7.9 -M * 10.9 7.2 151 SYLVAN LAKE 8420 14.7 18.1 81 19.6 17.2 114 SYLVAN ROAD 7120 11.4 10.9 105 14.9 15.1 99 YOUNTS PEAK 8350 13.9 14.2 98 13.3 13.1 102 ----- ----- Basin wide percent of average 98 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.5 4.1 159 6.7 6.2 108 BIG GOOSE 7990 8.5 7.3 116 12.0 6.5 185 BONE SPRINGS DIV 9350 16.9 12.5 135 13.1 11.1 118 BURGESS JUNCTION 7880 10.6 8.6 123 12.5 9.1 137 CLOUD PEAK RESERVOIR 9860 13.9 9.5 146 12.8 9.4 136 DOME LAKE 8880 12.3 9.2 134 12.8 9.8 131 GRAVE SPRINGS 8550 6.7 6.8 99 8.0 7.4 108 HANSEN SAWMILL 8360 5.1 4.9 104 7.0 6.0 117 LITTLE GOOSE 8870 9.6 -M * 14.1 -M * MIDDLE POWDER 7760 8.2 8.6 95 8.9 9.2 97 POWDER RIVER PASS 9480 9.8 8.3 118 11.6 9.6 121 SOLDIER PARK 8720 10.6 -M * 8.5 -M * SUCKER CREEK 8880 12.4 8.7 143 12.8 10.0 128 TIE CREEK 6870 6.2 4.6 135 12.1 7.6 159 ----- ----- Basin wide percent of average 126 128 BELLE FOURCHE BLIND PARK 6890 7.2 6.4 112 7.9 8.9 89 COLE CANYON 5910 5.2 5.4 96 6.6 5.3 125 NORTH RAPID CREEK 6130 6.5 6.4 102 6.3 7.2 88 ----- ----- Basin wide percent of average 104 97 UPPER N. PLATTE RIVER BLACKHALL MTN 9820 18.9 -M * 20.4 -M * CINNABAR PARK 9574 14.9 15.4 97 18.0 16.6 108 COLUMBINE 9160 15.7 20.7 76 16.4 19.8 83 DIVIDE PEAK 8880 12.6 14.9 85 16.5 16.2 102 ELK RIVER 8700 12.5 15.2 82 13.1 15.3 86 JOE WRIGHT 10120 11.8 16.4 72 16.0 19.1 84 NORTH FRENCH CREEK 10130 17.5 21.5 81 17.4 19.2 91 OLD BATTLE 10000 19.4 24.7 79 22.6 26.9 84 SAGE CREEK BASIN 7850 12.6 8.6 147 9.0 9.4 96 SOUTH BRUSH CREEK 8440 7.1 9.3 76 10.2 12.7 80 TOWER 10500 25.5 35.8 71 26.2 30.4 86 WEBBER SPRINGS 9250 14.8 19.9 74 18.4 21.0 88 WILLOW CREEK PASS 9540 -M 9.1 * 7.7 9.8 79 ----- ----- Basin wide percent of average 81 88 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.4 18.1 85 16.5 16.6 99 CASPER MTN. 7900 16.6 10.7 155 16.4 10.5 156 DEADMAN HILL 10220 14.8 12.4 119 13.7 12.5 110 DEER PARK 9700 9.6 13.9 69 14.7 17.1 86 LAPRELE CREEK 8375 8.3 8.5 98 10.8 9.5 114 RENO HILL 8400 14.0 9.8 143 15.6 10.9 143 ROACH 9700 11.8 13.3 89 14.7 14.0 105 SAND LAKE 10050 20.3 23.7 86 20.2 18.4 110 SOUTH PASS 9040 11.9 13.5 88 11.6 14.4 81 WINDY PEAK 7900 6.8 5.7 119 8.4 8.1 104 ----- ----- Basin wide percent of average 100 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.0 9.1 110 10.3 11.7 88 DIVIDE PEAK 8880 12.6 14.9 85 16.5 16.2 102 OLD BATTLE 10000 19.4 24.7 79 22.6 26.9 84 SANDSTONE RS 8150 9.6 11.8 81 10.7 14.9 72 WHISKEY PARK 8950 17.9 22.4 80 21.1 22.4 94 ----- ----- Basin wide percent of average 84 88 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.4 11.5 99 11.5 10.8 106 BLIND BULL SUM 8650 19.1 21.8 88 15.3 18.2 84 EAST RIM DIVIDE 7930 9.7 10.4 93 10.3 9.7 106 ELKHART PARK G.S. 9400 11.1 10.5 106 12.2 10.4 117 GROS VENTRE SUMMIT 8750 8.0 10.9 73 8.4 10.2 82 GUNSIGHT PASS 9820 9.9 -M * 10.7 -M * KENDALL R.S. 7740 13.0 11.7 111 13.9 11.9 117 LOOMIS PARK 8240 12.3 13.7 90 14.3 14.1 101 NEW FORK LAKE 8340 10.1 9.2 110 9.4 9.2 102 POCKET CREEK 9360 8.6 -M * 10.4 -M * SNIDER BASIN 8060 11.2 11.8 95 11.4 13.1 87 SPRING CREEK DIVIDE 9000 19.7 21.0 94 19.9 21.5 93 TRIPLE PEAK 8500 -M 19.8 * 22.1 19.6 113 ----- ----- Basin wide percent of average 95 100 LOWER GREEN RIVER HAMS FORK 7840 8.7 10.3 84 8.2 9.9 83 HEWINTA 9519 6.7 8.5 79 10.1 11.0 92 HICKERSON PARK 9145 7.8 5.5 142 10.5 5.9 178 HOLE-IN-ROCK 9150 6.6 5.3 125 9.7 5.5 176 INDIAN CREEK 9425 16.8 21.0 80 15.1 20.1 75 KELLEY R.S. 8180 11.3 13.2 86 13.4 16.4 82 STEEL CREEK PARK 10200 -M 11.9 * 11.4 12.2 93 ----- ----- Basin wide percent of average 91 97 UPPER BEAR RIVER BUG LAKE 7950 11.5 16.2 71 13.0 15.3 85 HAYDEN FORK 9212 8.8 12.3 72 13.7 16.2 85 KELLEY R.S. 8180 11.3 13.2 86 13.4 16.4 82 LILY LAKE 9156 7.4 10.2 73 9.3 13.6 68 MONTE CRISTO 8960 14.8 23.2 64 15.3 20.0 76 SALT RIVER SUMMIT 7760 9.5 11.5 83 10.2 15.0 68 TRIAL LAKE 9992 10.8 19.4 56 11.0 19.3 57 ----- ----- Basin wide percent of average 70 74 ----------------------------------------------------------------------------- -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.