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 WEDNESDAY: MARCH 9 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.7 16.8 105 20.6 19.5 106 COTTONWOOD CREEK 7670 23.6 20.1 117 31.3 24.2 129 GRAND TARGHEE 9260 41.2 -M * -M -M * GRANITE CREEK 6770 18.9 17.2 110 20.3 18.2 112 GRASSY LAKE 7265 32.9 31.4 105 35.0 32.5 108 GROS VENTRE SUMMIT 8750 13.0 12.3 106 12.8 11.4 112 GUNSIGHT PASS 9820 14.9 -M * 14.8 -M * LEWIS LAKE DIVIDE 7850 31.7 31.5 101 -M 33.1 * PHILLIPS BENCH 8200 26.7 25.4 105 27.4 25.9 106 SALT RIVER SUMMIT 7760 15.5 12.9 120 19.5 16.6 117 SNAKE RIVER STATION 6920 -M 17.6 * 22.7 20.3 112 SPRING CREEK DIVIDE 9000 30.1 23.5 128 29.0 23.6 123 THUMB DIVIDE 7980 17.5 16.6 105 17.2 16.9 102 TOGWOTEE PASS 9580 25.1 21.9 115 26.6 21.7 123 TWO OCEAN PLATEAU 9240 -M 24.6 * -M 24.7 * WILLOW CREEK 8380 30.5 26.9 113 35.2 28.5 124 ----- ----- Basin wide percent of average 110 115 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.5 21.2 101 20.7 18.0 115 BLACK BEAR 8170 37.6 35.3 107 35.9 35.3 102 CANYON 7870 14.3 12.3 116 15.2 13.7 111 FISHER CREEK 9100 34.3 31.4 109 33.0 32.3 102 MADISON PLATEAU 7750 23.3 22.4 104 25.3 23.4 108 NORTHEAST ENTRANCE 7350 11.9 10.4 114 13.2 11.3 117 PARKER PEAK 9400 24.6 19.3 127 21.6 14.4 150 SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126 THUMB DIVIDE 7980 17.5 16.6 105 17.2 16.9 102 TWO OCEAN PLATEAU 9240 -M 24.6 * -M 24.7 * WHISKEY CREEK 6800 16.9 15.5 109 19.3 18.4 105 WHITE MILL 8700 23.5 21.7 108 23.9 23.9 100 WOLVERINE 7650 13.0 11.2 116 12.8 11.7 109 ----- ----- Basin wide percent of average 109 110 WIND RIVER BURROUGHS CREEK 8750 13.4 13.3 101 14.0 14.4 97 CASTLE CREEK 8400 6.2 -M * 7.1 -M * COLD SPRINGS 9630 7.4 7.8 95 7.0 8.9 79 DEER PARK 9700 16.6 14.9 111 19.4 19.0 102 HOBBS PARK 10100 12.6 12.7 99 10.9 10.5 104 LITTLE WARM 9370 10.6 10.2 104 10.7 11.5 93 SOUTH PASS 9040 15.6 15.0 104 13.6 15.8 86 ST. LAWRENCE ALT 8620 4.4 6.4 69 6.2 7.4 84 TOGWOTEE PASS 9580 25.1 21.9 115 26.6 21.7 123 TOWNSEND CREEK 8700 7.7 7.4 104 9.7 9.4 103 ----- ----- Basin wide percent of average 103 100 BIGHORN BASIN BALD MTN. 9380 19.9 16.9 118 16.4 14.9 110 BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.8 103 BLACKWATER 9780 22.1 21.7 102 21.7 18.1 120 BONE SPRINGS DIV 9350 16.5 13.9 119 13.7 12.3 111 EVENING STAR 9200 27.0 26.5 102 29.6 22.8 130 GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.3 90 KIRWIN 9550 9.9 9.8 101 10.9 9.7 112 MARQUETTE 8760 2.3 7.2 32 5.7 7.9 72 MIDDLE POWDER 7760 8.1 9.6 84 9.9 10.2 97 OWL CREEK 8975 5.0 4.5 111 4.9 4.7 104 POWDER RIVER PASS 9480 12.1 9.3 130 14.0 10.5 133 SHELL CREEK 9580 14.4 12.5 115 13.0 11.4 114 SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126 SYLVAN ROAD 7120 13.7 12.0 114 17.7 16.1 110 TIMBER CREEK 7950 3.4 4.5 76 4.1 5.8 71 YOUNTS PEAK 8350 15.0 15.4 97 13.1 14.3 92 ----- ----- Basin wide percent of average 104 110 SHOSHONE RIVER BLACKWATER 9780 22.1 21.7 102 21.7 18.1 120 EVENING STAR 9200 27.0 26.5 102 29.6 22.8 130 KIRWIN 9550 9.9 9.8 101 10.9 9.7 112 MARQUETTE 8760 2.3 7.2 32 5.7 7.9 72 SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126 SYLVAN ROAD 7120 13.7 12.0 114 17.7 16.1 110 YOUNTS PEAK 8350 15.0 15.4 97 13.1 14.3 92 ----- ----- Basin wide percent of average 98 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.8 103 BIG GOOSE 7990 6.6 8.2 80 8.3 7.1 117 BONE SPRINGS DIV 9350 16.5 13.9 119 13.7 12.3 111 BURGESS JUNCTION 7880 9.3 9.6 97 10.2 10.1 101 CLOUD PEAK RESERVOIR 9860 13.5 10.9 124 12.3 10.4 118 DOME LAKE 8880 10.7 10.1 106 10.9 10.8 101 GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.3 90 HANSEN SAWMILL 8360 5.9 5.5 107 6.7 6.7 100 LITTLE GOOSE 8870 7.5 -M * 11.7 -M * MIDDLE POWDER 7760 8.1 9.6 84 9.9 10.2 97 POWDER RIVER PASS 9480 12.1 9.3 130 14.0 10.5 133 SOLDIER PARK 8720 6.2 -M * 7.5 -M * SUCKER CREEK 8880 11.1 9.8 113 12.2 11.2 109 TIE CREEK 6870 6.0 5.5 109 8.6 8.3 104 ----- ----- Basin wide percent of average 109 108 BELLE FOURCHE BLIND PARK 6890 9.6 7.9 122 15.3 9.7 158 COLE CANYON 5910 7.5 6.0 125 10.8 5.8 186 NORTH RAPID CREEK 6130 8.6 7.2 119 12.9 7.8 165 ----- ----- Basin wide percent of average 122 167 UPPER N. PLATTE RIVER CINNABAR PARK 9574 21.8 16.6 131 22.0 17.9 123 COLUMBINE 9160 29.7 23.1 129 29.7 22.1 134 DIVIDE PEAK 8880 20.0 16.7 120 23.9 18.1 132 ELK RIVER 8700 22.3 17.1 130 23.6 17.0 139 JOE WRIGHT 10120 25.0 18.2 137 30.0 21.3 141 NORTH FRENCH CREEK 10130 38.5 24.2 159 32.2 21.4 150 OLD BATTLE 10000 36.7 28.0 131 28.7 30.2 95 SAGE CREEK BASIN 7850 18.5 9.7 191 16.5 10.5 157 SOUTH BRUSH CREEK 8440 16.4 10.9 150 19.3 14.0 138 TOWER 10500 48.2 39.6 122 45.8 33.7 136 WEBBER SPRINGS 9250 27.0 23.0 117 32.1 23.3 138 WILLOW CREEK PASS 9540 16.3 10.2 160 15.2 11.0 138 ----- ----- Basin wide percent of average 135 133 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 27.1 20.1 135 27.6 18.6 148 CASPER MTN. 7900 10.2 12.0 85 12.9 11.8 109 DEADMAN HILL 10220 18.5 13.7 135 19.0 14.2 134 DEER PARK 9700 16.6 14.9 111 19.4 19.0 102 LAPRELE CREEK 8375 11.6 9.5 122 12.8 10.7 120 RENO HILL 8400 13.0 11.3 115 15.0 12.2 123 ROACH 9700 17.9 14.7 122 21.4 15.9 135 SAND LAKE 10050 32.3 27.1 119 30.9 20.4 151 SOUTH PASS 9040 15.6 15.0 104 13.6 15.8 86 WINDY PEAK 7900 9.8 6.7 146 12.1 9.0 134 ----- ----- Basin wide percent of average 119 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.6 * 11.9 13.2 90 DIVIDE PEAK 8880 20.0 16.7 120 23.9 18.1 132 OLD BATTLE 10000 36.7 28.0 131 28.7 30.2 95 SANDSTONE RS 8150 13.9 13.5 103 22.7 16.6 137 WHISKEY PARK 8950 -M 25.8 * 35.0 24.8 141 ----- ----- Basin wide percent of average 121 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.1 12.8 102 13.4 11.9 113 BLIND BULL SUM 8650 26.0 24.6 106 18.6 19.9 93 EAST RIM DIVIDE 7930 13.5 11.7 115 11.7 10.8 108 ELKHART PARK G.S. 9400 11.7 11.8 99 11.7 11.6 101 GROS VENTRE SUMMIT 8750 13.0 12.3 106 12.8 11.4 112 GUNSIGHT PASS 9820 14.9 -M * 14.8 -M * KENDALL R.S. 7740 12.0 13.3 90 13.6 13.2 103 LOOMIS PARK 8240 17.9 15.5 115 18.3 15.6 117 NEW FORK LAKE 8340 11.4 10.1 113 10.4 10.1 103 POCKET CREEK 9360 10.2 -M * 12.8 -M * SNIDER BASIN 8060 18.1 13.1 138 17.4 14.4 121 SPRING CREEK DIVIDE 9000 30.1 23.5 128 29.0 23.6 123 TRIPLE PEAK 8500 26.5 22.1 120 28.7 21.9 131 ----- ----- Basin wide percent of average 113 113 LOWER GREEN RIVER HAMS FORK 7840 15.3 11.8 130 14.0 10.9 128 HEWINTA 9519 11.0 9.8 112 14.5 12.3 118 HICKERSON PARK 9145 6.8 6.2 110 8.5 6.6 129 HOLE-IN-ROCK 9150 7.2 6.1 118 8.9 6.2 144 INDIAN CREEK 9425 27.5 23.9 115 24.8 22.2 112 KELLEY R.S. 8180 18.7 14.9 126 21.7 18.0 121 STEEL CREEK PARK 10200 14.8 13.5 110 17.4 13.7 127 ----- ----- Basin wide percent of average 118 122 UPPER BEAR RIVER BUG LAKE 7950 26.3 18.3 144 25.8 17.0 152 HAYDEN FORK 9212 20.4 14.1 145 26.0 18.1 144 KELLEY R.S. 8180 18.7 14.9 126 21.7 18.0 121 LILY LAKE 9156 17.9 11.5 156 19.2 15.0 128 MONTE CRISTO 8960 32.9 26.4 125 31.8 22.3 143 SALT RIVER SUMMIT 7760 15.5 12.9 120 19.5 16.6 117 TRIAL LAKE 9992 31.2 22.0 142 30.1 21.8 138 ----- ----- Basin wide percent of average 136 135 ----------------------------------------------------------------------------- -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.