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 16 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.5 17.4 106 21.4 20.2 106 COTTONWOOD CREEK 7670 24.3 21.7 112 32.1 25.3 127 GRAND TARGHEE 9260 42.6 -M * -M -M * GRANITE CREEK 6770 19.6 18.0 109 20.7 18.9 110 GRASSY LAKE 7265 34.9 33.0 106 36.8 33.8 109 GROS VENTRE SUMMIT 8750 13.7 13.0 105 13.1 11.9 110 GUNSIGHT PASS 9820 15.4 -M * 15.2 -M * LEWIS LAKE DIVIDE 7850 35.0 33.0 106 -M 34.5 * PHILLIPS BENCH 8200 27.8 26.7 104 28.3 27.0 105 SALT RIVER SUMMIT 7760 15.8 13.4 118 19.9 17.3 115 SNAKE RIVER STATION 6920 -M 18.4 * 23.8 21.0 113 SPRING CREEK DIVIDE 9000 31.3 24.6 127 29.7 24.5 121 THUMB DIVIDE 7980 19.1 17.6 109 18.3 17.6 104 TOGWOTEE PASS 9580 25.9 22.9 113 27.4 22.7 121 TWO OCEAN PLATEAU 9240 -M 25.7 * -M 25.8 * WILLOW CREEK 8380 32.2 28.2 114 36.3 29.7 122 ----- ----- Basin wide percent of average 111 114 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 23.0 22.0 105 22.0 18.7 118 BLACK BEAR 8170 41.3 36.6 113 39.1 37.2 105 CANYON 7870 15.2 12.8 119 16.2 14.3 113 FISHER CREEK 9100 36.7 32.5 113 35.3 33.7 105 MADISON PLATEAU 7750 26.0 23.3 112 27.7 24.5 113 NORTHEAST ENTRANCE 7350 12.5 10.6 118 13.8 11.8 117 PARKER PEAK 9400 25.9 20.0 130 22.6 15.0 151 SYLVAN LAKE 8420 21.4 20.7 103 24.7 19.5 127 THUMB DIVIDE 7980 19.1 17.6 109 18.3 17.6 104 TWO OCEAN PLATEAU 9240 -M 25.7 * -M 25.8 * WHISKEY CREEK 6800 18.8 16.0 118 21.0 19.4 108 WHITE MILL 8700 24.9 22.5 111 25.3 25.0 101 WOLVERINE 7650 13.3 11.3 118 13.3 12.0 111 ----- ----- Basin wide percent of average 113 112 WIND RIVER BURROUGHS CREEK 8750 13.8 13.7 101 14.5 15.0 97 CASTLE CREEK 8400 6.3 -M * 7.2 -M * COLD SPRINGS 9630 7.7 8.1 95 7.6 9.3 82 DEER PARK 9700 17.0 15.3 111 19.8 20.0 99 HOBBS PARK 10100 13.0 13.2 98 11.4 11.1 103 LITTLE WARM 9370 11.2 10.7 105 11.3 12.0 94 SOUTH PASS 9040 16.0 15.4 104 14.0 16.6 84 ST. LAWRENCE ALT 8620 4.5 6.6 68 6.3 7.8 81 TOGWOTEE PASS 9580 25.9 22.9 113 27.4 22.7 121 TOWNSEND CREEK 8700 7.8 7.7 101 9.9 10.0 99 ----- ----- Basin wide percent of average 103 98 BIGHORN BASIN BALD MTN. 9380 20.0 17.7 113 16.6 15.7 106 BEAR TRAP MEADOW 8200 7.1 4.9 145 7.3 7.1 103 BLACKWATER 9780 23.3 22.6 103 22.9 18.8 122 BONE SPRINGS DIV 9350 16.8 14.5 116 14.0 13.0 108 EVENING STAR 9200 28.8 27.5 105 31.4 23.6 133 GRAVE SPRINGS 8550 7.5 8.2 91 7.6 8.8 86 KIRWIN 9550 10.3 10.2 101 11.4 10.1 113 MARQUETTE 8760 2.5 -M * 5.7 8.4 68 MIDDLE POWDER 7760 8.4 10.2 82 10.3 10.8 95 OWL CREEK 8975 5.2 4.7 111 5.2 5.0 104 POWDER RIVER PASS 9480 12.2 9.8 124 14.4 11.0 131 SHELL CREEK 9580 14.7 13.1 112 13.2 11.9 111 SYLVAN LAKE 8420 21.4 20.7 103 24.7 19.5 127 SYLVAN ROAD 7120 14.1 12.2 116 18.2 16.6 110 TIMBER CREEK 7950 3.5 4.9 71 4.2 6.2 68 YOUNTS PEAK 8350 15.9 15.8 101 13.7 14.9 92 ----- ----- Basin wide percent of average 106 110 SHOSHONE RIVER BLACKWATER 9780 23.3 22.6 103 22.9 18.8 122 EVENING STAR 9200 28.8 27.5 105 31.4 23.6 133 KIRWIN 9550 10.3 10.2 101 11.4 10.1 113 MARQUETTE 8760 2.5 -M * 5.7 8.4 68 SYLVAN LAKE 8420 21.4 20.7 103 24.7 19.5 127 SYLVAN ROAD 7120 14.1 12.2 116 18.2 16.6 110 YOUNTS PEAK 8350 15.9 15.8 101 13.7 14.9 92 ----- ----- Basin wide percent of average 104 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.1 4.9 145 7.3 7.1 103 BIG GOOSE 7990 7.0 8.8 80 8.6 7.5 115 BONE SPRINGS DIV 9350 16.8 14.5 116 14.0 13.0 108 BURGESS JUNCTION 7880 9.5 10.1 94 10.4 10.7 97 CLOUD PEAK RESERVOIR 9860 13.8 11.5 120 12.8 11.1 115 DOME LAKE 8880 11.2 10.7 105 11.2 11.4 98 GRAVE SPRINGS 8550 7.5 8.2 91 7.6 8.8 86 HANSEN SAWMILL 8360 6.2 5.8 107 6.8 7.1 96 LITTLE GOOSE 8870 7.7 -M * 12.0 -M * MIDDLE POWDER 7760 8.4 10.2 82 10.3 10.8 95 POWDER RIVER PASS 9480 12.2 9.8 124 14.4 11.0 131 SOLDIER PARK 8720 6.4 -M * 7.8 -M * SUCKER CREEK 8880 11.2 10.2 110 12.3 11.8 104 TIE CREEK 6870 5.9 5.8 102 8.7 8.7 100 ----- ----- Basin wide percent of average 106 105 BELLE FOURCHE BLIND PARK 6890 9.4 8.4 112 15.2 10.2 149 COLE CANYON 5910 7.6 6.3 121 10.9 6.1 179 NORTH RAPID CREEK 6130 8.6 7.5 115 13.0 8.0 163 ----- ----- Basin wide percent of average 115 161 UPPER N. PLATTE RIVER CINNABAR PARK 9574 22.4 17.1 131 22.5 18.6 121 COLUMBINE 9160 31.1 23.9 130 31.8 23.1 138 DIVIDE PEAK 8880 20.9 17.8 117 24.7 18.9 131 ELK RIVER 8700 23.2 17.9 130 24.3 17.9 136 JOE WRIGHT 10120 26.7 19.2 139 31.1 22.4 139 NORTH FRENCH CREEK 10130 40.1 25.8 155 32.2 22.4 144 OLD BATTLE 10000 38.6 29.4 131 29.0 31.7 91 SAGE CREEK BASIN 7850 18.9 10.3 183 16.7 11.0 152 SOUTH BRUSH CREEK 8440 17.1 11.7 146 20.0 14.7 136 TOWER 10500 50.3 41.5 121 46.0 35.2 131 WEBBER SPRINGS 9250 27.9 24.4 114 32.9 24.4 135 WILLOW CREEK PASS 9540 16.9 10.7 158 15.7 11.5 137 ----- ----- Basin wide percent of average 134 130 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 28.4 21.2 134 28.7 19.6 146 CASPER MTN. 7900 10.4 12.6 83 12.7 12.5 102 DEADMAN HILL 10220 19.3 14.5 133 19.8 15.0 132 DEER PARK 9700 17.0 15.3 111 19.8 20.0 99 LAPRELE CREEK 8375 11.7 10.1 116 12.9 11.2 115 RENO HILL 8400 13.0 12.1 107 15.2 13.0 117 ROACH 9700 18.6 15.4 121 21.8 16.8 130 SAND LAKE 10050 33.6 28.9 116 32.0 21.5 149 SOUTH PASS 9040 16.0 15.4 104 14.0 16.6 84 WINDY PEAK 7900 9.8 7.2 136 12.1 9.4 129 ----- ----- Basin wide percent of average 116 121 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.3 * 12.3 14.1 87 DIVIDE PEAK 8880 20.9 17.8 117 24.7 18.9 131 OLD BATTLE 10000 38.6 29.4 131 29.0 31.7 91 SANDSTONE RS 8150 14.5 14.3 101 23.2 17.3 134 WHISKEY PARK 8950 -M 27.5 * 36.2 26.0 139 ----- ----- Basin wide percent of average 120 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 13.4 101 13.8 12.4 111 BLIND BULL SUM 8650 27.8 25.9 107 19.8 20.7 96 EAST RIM DIVIDE 7930 14.2 12.2 116 12.1 11.2 108 ELKHART PARK G.S. 9400 12.2 12.4 98 12.0 12.1 99 GROS VENTRE SUMMIT 8750 13.7 13.0 105 13.1 11.9 110 GUNSIGHT PASS 9820 15.4 -M * 15.2 -M * KENDALL R.S. 7740 12.6 14.0 90 14.0 13.7 102 LOOMIS PARK 8240 18.7 16.3 115 18.9 16.2 117 NEW FORK LAKE 8340 11.8 10.5 112 10.9 10.5 104 POCKET CREEK 9360 10.8 -M * 13.1 -M * SNIDER BASIN 8060 18.7 13.7 136 17.9 14.9 120 SPRING CREEK DIVIDE 9000 31.3 24.6 127 29.7 24.5 121 TRIPLE PEAK 8500 28.2 23.2 122 29.9 22.9 131 ----- ----- Basin wide percent of average 113 112 LOWER GREEN RIVER HAMS FORK 7840 15.8 12.3 128 14.4 11.3 127 HEWINTA 9519 12.2 10.5 116 15.6 13.0 120 HICKERSON PARK 9145 7.8 6.5 120 9.4 7.0 134 HOLE-IN-ROCK 9150 7.9 6.4 123 9.7 6.5 149 INDIAN CREEK 9425 28.6 25.3 113 25.4 23.3 109 KELLEY R.S. 8180 19.1 15.7 122 22.2 18.8 118 STEEL CREEK PARK 10200 15.8 14.3 110 18.2 14.4 126 ----- ----- Basin wide percent of average 118 122 UPPER BEAR RIVER BUG LAKE 7950 26.6 19.2 139 26.4 17.8 148 HAYDEN FORK 9212 21.1 15.0 141 26.6 19.0 140 KELLEY R.S. 8180 19.1 15.7 122 22.2 18.8 118 LILY LAKE 9156 19.2 12.0 160 20.1 15.8 127 MONTE CRISTO 8960 33.6 27.8 121 33.1 23.4 141 SALT RIVER SUMMIT 7760 15.8 13.4 118 19.9 17.3 115 TRIAL LAKE 9992 32.3 23.1 140 31.3 22.9 137 ----- ----- Basin wide percent of average 133 133 ----------------------------------------------------------------------------- -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.