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 TUESDAY: MARCH 1 , 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 16.0 102 19.4 18.6 104 COTTONWOOD CREEK 7670 21.5 18.5 116 28.9 23.0 126 GRAND TARGHEE 9260 38.4 -M * 26.3 -M * GRANITE CREEK 6770 16.8 16.1 104 18.5 17.4 106 GRASSY LAKE 7265 29.8 29.5 101 32.2 31.0 104 GROS VENTRE SUMMIT 8750 12.4 11.5 108 12.1 10.8 112 GUNSIGHT PASS 9820 13.8 -M * 13.8 -M * LEWIS LAKE DIVIDE 7850 28.6 29.7 96 28.1 31.5 89 PHILLIPS BENCH 8200 24.6 23.9 103 25.5 24.6 104 SALT RIVER SUMMIT 7760 14.2 12.2 116 18.2 15.8 115 SNAKE RIVER STATION 6920 -M 16.6 * 21.0 19.5 108 SPRING CREEK DIVIDE 9000 28.3 22.2 127 27.4 22.5 122 THUMB DIVIDE 7980 16.5 15.4 107 16.3 16.0 102 TOGWOTEE PASS 9580 23.2 20.7 112 24.6 20.7 119 TWO OCEAN PLATEAU 9240 -M 23.3 * -M 23.4 * WILLOW CREEK 8380 27.4 25.4 108 32.3 27.0 120 ----- ----- Basin wide percent of average 108 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.7 19.7 105 19.8 17.1 116 BLACK BEAR 8170 35.3 32.9 107 34.1 33.3 102 CANYON 7870 13.5 11.3 119 14.5 13.0 112 FISHER CREEK 9100 32.6 29.6 110 31.3 30.6 102 MADISON PLATEAU 7750 22.3 20.9 107 24.2 22.1 110 NORTHEAST ENTRANCE 7350 11.1 9.7 114 12.5 10.8 116 PARKER PEAK 9400 23.2 18.2 127 20.6 13.7 150 SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127 THUMB DIVIDE 7980 16.5 15.4 107 16.3 16.0 102 TWO OCEAN PLATEAU 9240 -M 23.3 * -M 23.4 * WHISKEY CREEK 6800 16.0 14.4 111 18.6 17.4 107 WHITE MILL 8700 22.1 20.3 109 22.6 22.7 100 WOLVERINE 7650 12.4 10.6 117 12.0 11.2 107 ----- ----- Basin wide percent of average 111 110 WIND RIVER BURROUGHS CREEK 8750 12.1 12.6 96 12.6 13.7 92 CASTLE CREEK 8400 5.5 -M * 6.1 -M * COLD SPRINGS 9630 7.0 7.2 97 6.7 8.4 80 DEER PARK 9700 16.2 14.4 113 18.6 17.8 104 HOBBS PARK 10100 12.2 11.9 103 10.7 9.9 108 LITTLE WARM 9370 9.8 9.5 103 9.8 10.9 90 SOUTH PASS 9040 15.1 14.0 108 13.1 15.0 87 ST. LAWRENCE ALT 8620 4.1 5.9 69 5.8 7.0 83 TOGWOTEE PASS 9580 23.2 20.7 112 24.6 20.7 119 TOWNSEND CREEK 8700 7.5 6.9 109 9.5 8.9 107 ----- ----- Basin wide percent of average 104 99 BIGHORN BASIN BALD MTN. 9380 19.4 16.0 121 15.8 14.1 112 BEAR TRAP MEADOW 8200 6.3 4.3 147 6.6 6.4 103 BLACKWATER 9780 20.7 20.4 101 20.2 17.2 117 BONE SPRINGS DIV 9350 15.7 13.2 119 12.9 11.6 111 EVENING STAR 9200 25.6 25.0 102 28.2 21.8 129 GRAVE SPRINGS 8550 6.6 7.3 90 6.8 7.8 87 KIRWIN 9550 9.1 9.1 100 10.0 9.2 109 MARQUETTE 8760 2.0 6.9 29 5.2 7.5 69 MIDDLE POWDER 7760 7.6 9.0 84 9.3 9.6 97 OWL CREEK 8975 4.5 4.1 110 4.5 4.4 102 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132 SHELL CREEK 9580 13.5 11.8 114 12.2 10.8 113 SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127 SYLVAN ROAD 7120 13.4 11.4 118 17.1 15.6 110 TIMBER CREEK 7950 3.1 4.2 74 3.7 5.4 69 YOUNTS PEAK 8350 13.7 14.6 94 11.8 13.6 87 ----- ----- Basin wide percent of average 104 110 SHOSHONE RIVER BLACKWATER 9780 20.7 20.4 101 20.2 17.2 117 EVENING STAR 9200 25.6 25.0 102 28.2 21.8 129 KIRWIN 9550 9.1 9.1 100 10.0 9.2 109 MARQUETTE 8760 2.0 6.9 29 5.2 7.5 69 SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127 SYLVAN ROAD 7120 13.4 11.4 118 17.1 15.6 110 YOUNTS PEAK 8350 13.7 14.6 94 11.8 13.6 87 ----- ----- Basin wide percent of average 98 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.3 4.3 147 6.6 6.4 103 BIG GOOSE 7990 6.0 7.7 78 7.8 6.8 115 BONE SPRINGS DIV 9350 15.7 13.2 119 12.9 11.6 111 BURGESS JUNCTION 7880 8.7 9.0 97 9.7 9.5 102 CLOUD PEAK RESERVOIR 9860 12.7 10.0 127 12.0 9.8 122 DOME LAKE 8880 9.9 9.5 104 10.2 10.2 100 GRAVE SPRINGS 8550 6.6 7.3 90 6.8 7.8 87 HANSEN SAWMILL 8360 5.3 5.2 102 5.9 6.3 94 LITTLE GOOSE 8870 6.8 -M * 11.0 -M * MIDDLE POWDER 7760 7.6 9.0 84 9.3 9.6 97 POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132 SOLDIER PARK 8720 5.5 -M * 6.9 -M * SUCKER CREEK 8880 10.1 9.1 111 11.3 10.5 108 TIE CREEK 6870 5.6 4.9 114 8.1 7.9 103 ----- ----- Basin wide percent of average 108 107 BELLE FOURCHE BLIND PARK 6890 8.7 7.1 123 14.4 9.3 155 COLE CANYON 5910 6.9 5.7 121 10.4 5.5 189 NORTH RAPID CREEK 6130 8.0 6.8 118 12.4 7.5 165 ----- ----- Basin wide percent of average 120 167 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.9 15.9 131 21.9 17.2 127 COLUMBINE 9160 27.7 21.9 126 29.2 20.9 140 DIVIDE PEAK 8880 18.5 15.6 119 22.7 17.0 134 ELK RIVER 8700 20.9 16.1 130 22.4 16.1 139 JOE WRIGHT 10120 23.8 17.3 138 29.3 20.2 145 NORTH FRENCH CREEK 10130 36.0 22.7 159 32.2 20.2 159 OLD BATTLE 10000 34.4 26.3 131 27.9 28.5 98 SAGE CREEK BASIN 7850 17.1 9.0 190 15.7 9.9 159 SOUTH BRUSH CREEK 8440 15.2 10.0 152 18.3 13.3 138 TOWER 10500 45.0 37.6 120 45.2 31.9 142 WEBBER SPRINGS 9250 25.4 21.3 119 30.3 22.1 137 WILLOW CREEK PASS 9540 15.4 9.6 160 14.6 10.4 140 ----- ----- Basin wide percent of average 134 136 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.1 19.0 132 25.7 17.5 147 CASPER MTN. 7900 9.3 11.3 82 12.0 11.1 108 DEADMAN HILL 10220 17.9 13.0 138 18.8 13.3 141 DEER PARK 9700 16.2 14.4 113 18.6 17.8 104 LAPRELE CREEK 8375 10.6 8.9 119 11.8 10.0 118 RENO HILL 8400 12.0 10.4 115 14.0 11.5 122 ROACH 9700 17.4 13.9 125 20.9 14.9 140 SAND LAKE 10050 30.2 25.2 120 28.8 19.3 149 SOUTH PASS 9040 15.1 14.0 108 13.1 15.0 87 WINDY PEAK 7900 8.8 6.0 147 11.1 8.5 131 ----- ----- Basin wide percent of average 119 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.7 * 11.1 12.3 90 DIVIDE PEAK 8880 18.5 15.6 119 22.7 17.0 134 OLD BATTLE 10000 34.4 26.3 131 27.9 28.5 98 SANDSTONE RS 8150 12.2 12.5 98 -M 15.7 * WHISKEY PARK 8950 -M 23.8 * 33.1 23.4 141 ----- ----- Basin wide percent of average 120 117 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.3 12.1 102 12.6 11.3 112 BLIND BULL SUM 8650 23.4 23.1 101 16.7 19.1 87 EAST RIM DIVIDE 7930 12.4 11.0 113 10.7 10.2 105 ELKHART PARK G.S. 9400 10.6 11.1 95 10.6 10.9 97 GROS VENTRE SUMMIT 8750 12.4 11.5 108 12.1 10.8 112 GUNSIGHT PASS 9820 13.8 -M * 13.8 -M * KENDALL R.S. 7740 10.8 12.4 87 12.4 12.5 99 LOOMIS PARK 8240 16.1 14.5 111 16.8 14.8 114 NEW FORK LAKE 8340 10.3 9.6 107 9.6 9.6 100 POCKET CREEK 9360 9.6 -M * 12.2 -M * SNIDER BASIN 8060 16.8 12.4 135 16.5 13.7 120 SPRING CREEK DIVIDE 9000 28.3 22.2 127 27.4 22.5 122 TRIPLE PEAK 8500 24.6 20.9 118 26.7 20.7 129 ----- ----- Basin wide percent of average 111 110 LOWER GREEN RIVER HAMS FORK 7840 14.0 11.0 127 13.2 10.4 127 HEWINTA 9519 10.6 9.1 116 14.1 11.6 122 HICKERSON PARK 9145 6.2 5.8 107 7.8 6.2 126 HOLE-IN-ROCK 9150 6.7 5.7 118 8.4 5.8 145 INDIAN CREEK 9425 25.9 22.3 116 23.5 21.1 111 KELLEY R.S. 8180 17.3 14.0 124 20.2 17.2 117 STEEL CREEK PARK 10200 14.1 12.7 111 16.8 12.9 130 ----- ----- Basin wide percent of average 118 122 UPPER BEAR RIVER BUG LAKE 7950 24.2 17.1 142 23.2 16.2 143 HAYDEN FORK 9212 19.6 13.2 148 25.3 17.1 148 KELLEY R.S. 8180 17.3 14.0 124 20.2 17.2 117 LILY LAKE 9156 16.6 10.8 154 18.6 14.3 130 MONTE CRISTO 8960 29.5 24.7 119 29.7 21.1 141 SALT RIVER SUMMIT 7760 14.2 12.2 116 18.2 15.8 115 TRIAL LAKE 9992 29.9 20.6 145 29.7 20.5 145 ----- ----- Basin wide percent of average 134 135 ----------------------------------------------------------------------------- -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.