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 24 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.8 15.4 103 18.9 17.8 106 COTTONWOOD CREEK 7670 21.0 17.4 121 28.0 22.1 127 GRAND TARGHEE 9260 38.1 -M * 26.1 -M * GRANITE CREEK 6770 15.8 15.3 103 17.7 16.7 106 GRASSY LAKE 7265 28.6 28.2 101 31.2 29.8 105 GROS VENTRE SUMMIT 8750 12.0 11.0 109 11.6 10.3 113 GUNSIGHT PASS 9820 13.3 -M * 13.4 -M * LEWIS LAKE DIVIDE 7850 27.6 28.3 98 27.3 30.2 90 PHILLIPS BENCH 8200 24.0 22.8 105 24.8 23.6 105 SALT RIVER SUMMIT 7760 13.3 11.6 115 17.4 15.1 115 SNAKE RIVER STATION 6920 10.7 15.8 68 20.5 18.7 110 SPRING CREEK DIVIDE 9000 27.1 21.2 128 26.4 21.6 122 THUMB DIVIDE 7980 15.8 14.6 108 15.7 15.3 103 TOGWOTEE PASS 9580 22.7 19.9 114 24.1 19.9 121 TWO OCEAN PLATEAU 9240 -M 22.4 * -M 22.4 * WILLOW CREEK 8380 26.5 24.3 109 31.4 25.9 121 ----- ----- Basin wide percent of average 106 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 19.9 19.3 103 19.2 16.5 116 BLACK BEAR 8170 34.5 31.8 108 33.4 31.8 105 CANYON 7870 13.2 11.0 120 14.2 12.5 114 FISHER CREEK 9100 31.8 28.6 111 30.5 29.3 104 MADISON PLATEAU 7750 21.9 20.1 109 23.7 21.2 112 NORTHEAST ENTRANCE 7350 10.7 9.4 114 12.3 10.4 118 PARKER PEAK 9400 22.5 17.7 127 20.3 13.2 154 SYLVAN LAKE 8420 18.8 18.2 103 22.0 17.3 127 THUMB DIVIDE 7980 15.8 14.6 108 15.7 15.3 103 TWO OCEAN PLATEAU 9240 -M 22.4 * -M 22.4 * WHISKEY CREEK 6800 15.6 13.9 112 18.4 16.6 111 WHITE MILL 8700 21.7 19.6 111 22.1 21.8 101 WOLVERINE 7650 12.2 10.4 117 11.5 10.8 106 ----- ----- Basin wide percent of average 111 112 WIND RIVER BURROUGHS CREEK 8750 11.6 12.3 94 12.1 13.2 92 CASTLE CREEK 8400 5.1 -M * 5.9 -M * COLD SPRINGS 9630 6.6 7.0 94 6.7 8.1 83 DEER PARK 9700 15.5 13.9 112 17.3 17.2 101 HOBBS PARK 10100 11.4 11.6 98 10.2 9.5 107 LITTLE WARM 9370 9.3 9.2 101 9.3 10.5 89 SOUTH PASS 9040 13.8 13.6 101 11.8 14.5 81 ST. LAWRENCE ALT 8620 4.5 5.7 79 5.7 6.7 85 TOGWOTEE PASS 9580 22.7 19.9 114 24.1 19.9 121 TOWNSEND CREEK 8700 6.9 6.7 103 9.0 8.6 105 ----- ----- Basin wide percent of average 102 98 BIGHORN BASIN BALD MTN. 9380 19.1 15.5 123 15.7 13.6 115 BEAR TRAP MEADOW 8200 6.1 4.2 145 6.6 6.2 106 BLACKWATER 9780 20.2 19.9 102 19.6 16.6 118 BONE SPRINGS DIV 9350 15.4 12.6 122 12.6 11.2 113 EVENING STAR 9200 25.4 24.3 105 27.7 21.0 132 GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91 KIRWIN 9550 8.8 8.9 99 9.7 8.9 109 MARQUETTE 8760 1.8 6.7 27 5.2 7.2 72 MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.3 98 OWL CREEK 8975 4.3 4.0 108 4.2 4.3 98 POWDER RIVER PASS 9480 11.4 8.4 136 13.2 9.6 138 SHELL CREEK 9580 13.4 11.4 118 12.1 10.5 115 SYLVAN LAKE 8420 18.8 18.2 103 22.0 17.3 127 SYLVAN ROAD 7120 12.8 10.9 117 16.4 15.2 108 TIMBER CREEK 7950 2.8 4.1 68 3.6 5.2 69 YOUNTS PEAK 8350 13.3 14.3 93 11.5 13.1 88 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 20.2 19.9 102 19.6 16.6 118 EVENING STAR 9200 25.4 24.3 105 27.7 21.0 132 KIRWIN 9550 8.8 8.9 99 9.7 8.9 109 MARQUETTE 8760 1.8 6.7 27 5.2 7.2 72 SYLVAN LAKE 8420 18.8 18.2 103 22.0 17.3 127 SYLVAN ROAD 7120 12.8 10.9 117 16.4 15.2 108 YOUNTS PEAK 8350 13.3 14.3 93 11.5 13.1 88 ----- ----- Basin wide percent of average 98 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.1 4.2 145 6.6 6.2 106 BIG GOOSE 7990 5.9 7.3 81 7.8 6.5 120 BONE SPRINGS DIV 9350 15.4 12.6 122 12.6 11.2 113 BURGESS JUNCTION 7880 8.6 8.7 99 9.5 9.1 104 CLOUD PEAK RESERVOIR 9860 12.4 9.6 129 11.8 9.4 126 DOME LAKE 8880 9.3 9.3 100 10.1 9.9 102 GRAVE SPRINGS 8550 6.4 6.8 94 6.7 7.4 91 HANSEN SAWMILL 8360 5.1 4.9 104 5.8 6.1 95 LITTLE GOOSE 8870 6.8 -M * 10.8 -M * MIDDLE POWDER 7760 7.4 8.6 86 9.1 9.3 98 POWDER RIVER PASS 9480 11.4 8.4 136 13.2 9.6 138 SOLDIER PARK 8720 5.4 -M * 6.8 -M * SUCKER CREEK 8880 10.1 8.7 116 11.1 10.1 110 TIE CREEK 6870 5.5 4.7 117 8.0 7.6 105 ----- ----- Basin wide percent of average 110 110 BELLE FOURCHE BLIND PARK 6890 8.3 6.4 130 14.0 8.9 157 COLE CANYON 5910 6.8 5.5 124 10.1 5.3 191 NORTH RAPID CREEK 6130 7.9 6.5 122 12.2 7.2 169 ----- ----- Basin wide percent of average 125 170 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.5 15.5 132 21.9 16.7 131 COLUMBINE 9160 26.9 20.9 129 28.2 20.0 141 DIVIDE PEAK 8880 17.5 15.0 117 21.5 16.3 132 ELK RIVER 8700 19.8 15.4 129 21.4 15.4 139 JOE WRIGHT 10120 22.4 16.6 135 27.9 19.3 145 NORTH FRENCH CREEK 10130 34.6 21.6 160 32.2 19.3 167 OLD BATTLE 10000 33.4 25.0 134 27.8 27.1 103 SAGE CREEK BASIN 7850 16.4 8.7 189 15.0 9.4 160 SOUTH BRUSH CREEK 8440 14.3 9.4 152 17.3 12.8 135 TOWER 10500 43.8 36.1 121 44.1 30.6 144 WEBBER SPRINGS 9250 24.1 20.1 120 28.9 21.2 136 WILLOW CREEK PASS 9540 14.2 9.2 154 13.7 9.9 138 ----- ----- Basin wide percent of average 135 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.8 18.2 131 24.4 16.7 146 CASPER MTN. 7900 9.0 10.8 83 11.6 10.6 109 DEADMAN HILL 10220 16.7 12.5 134 17.6 12.6 140 DEER PARK 9700 15.5 13.9 112 17.3 17.2 101 LAPRELE CREEK 8375 10.1 8.5 119 11.2 9.6 117 RENO HILL 8400 11.6 9.9 117 13.4 11.0 122 ROACH 9700 16.6 13.4 124 20.0 14.1 142 SAND LAKE 10050 28.7 23.9 120 27.3 18.5 148 SOUTH PASS 9040 13.8 13.6 101 11.8 14.5 81 WINDY PEAK 7900 8.2 5.7 144 10.5 8.1 130 ----- ----- Basin wide percent of average 118 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.2 * 10.6 11.8 90 DIVIDE PEAK 8880 17.5 15.0 117 21.5 16.3 132 OLD BATTLE 10000 33.4 25.0 134 27.8 27.1 103 SANDSTONE RS 8150 11.5 11.9 97 -M 15.0 * WHISKEY PARK 8950 -M 22.6 * 31.7 22.5 141 ----- ----- Basin wide percent of average 120 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.5 11.6 99 11.9 10.9 109 BLIND BULL SUM 8650 22.6 22.0 103 16.0 18.3 87 EAST RIM DIVIDE 7930 11.9 10.5 113 10.3 9.8 105 ELKHART PARK G.S. 9400 10.3 10.6 97 10.2 10.5 97 GROS VENTRE SUMMIT 8750 12.0 11.0 109 11.6 10.3 113 GUNSIGHT PASS 9820 13.3 -M * 13.4 -M * KENDALL R.S. 7740 10.2 11.8 86 11.8 12.0 98 LOOMIS PARK 8240 15.3 13.8 111 16.1 14.2 113 NEW FORK LAKE 8340 9.9 9.2 108 9.2 9.3 99 POCKET CREEK 9360 9.0 -M * 11.5 -M * SNIDER BASIN 8060 15.8 11.9 133 15.6 13.2 118 SPRING CREEK DIVIDE 9000 27.1 21.2 128 26.4 21.6 122 TRIPLE PEAK 8500 23.8 19.9 120 25.8 19.8 130 ----- ----- Basin wide percent of average 111 110 LOWER GREEN RIVER HAMS FORK 7840 12.8 10.4 123 12.2 10.0 122 HEWINTA 9519 10.0 8.6 116 13.4 11.1 121 HICKERSON PARK 9145 5.9 5.6 105 7.6 6.0 127 HOLE-IN-ROCK 9150 6.5 5.4 120 8.2 5.5 149 INDIAN CREEK 9425 24.6 21.2 116 22.4 20.2 111 KELLEY R.S. 8180 16.3 13.3 123 19.1 16.5 116 STEEL CREEK PARK 10200 13.6 12.0 113 16.3 12.3 133 ----- ----- Basin wide percent of average 117 122 UPPER BEAR RIVER BUG LAKE 7950 22.3 16.3 137 22.3 15.5 144 HAYDEN FORK 9212 17.9 12.4 144 23.8 16.3 146 KELLEY R.S. 8180 16.3 13.3 123 19.1 16.5 116 LILY LAKE 9156 15.2 10.3 148 17.6 13.7 128 MONTE CRISTO 8960 27.4 23.4 117 27.7 20.2 137 SALT RIVER SUMMIT 7760 13.3 11.6 115 17.4 15.1 115 TRIAL LAKE 9992 27.9 19.6 142 27.4 19.5 141 ----- ----- Basin wide percent of average 131 133 ----------------------------------------------------------------------------- -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.