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 SUNDAY: APRIL 10 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 25.5 17.6 145 27.4 22.5 122 COTTONWOOD CREEK 7670 31.6 24.3 130 38.7 29.0 133 GRAND TARGHEE 9260 52.6 -M * 39.8 -M * GRANITE CREEK 6770 24.7 17.8 139 26.7 20.7 129 GRASSY LAKE 7265 43.9 37.1 118 45.2 37.8 120 GROS VENTRE SUMMIT 8750 17.2 14.6 118 17.3 13.7 126 GUNSIGHT PASS 9820 20.9 -M * 19.5 -M * LEWIS LAKE DIVIDE 7850 46.0 36.6 126 -M 38.6 * PHILLIPS BENCH 8200 36.9 30.3 122 36.6 30.6 120 SALT RIVER SUMMIT 7760 19.4 14.8 131 24.0 19.9 121 SNAKE RIVER STATION 6920 -M 18.5 * 29.3 23.5 125 SPRING CREEK DIVIDE 9000 38.8 28.1 138 35.6 27.9 128 THUMB DIVIDE 7980 25.3 19.2 132 22.8 20.0 114 TOGWOTEE PASS 9580 33.5 26.2 128 34.7 26.1 133 TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 * WILLOW CREEK 8380 41.6 31.6 132 43.5 34.1 128 ----- ----- Basin wide percent of average 129 125 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 30.1 24.9 121 27.8 21.3 131 BLACK BEAR 8170 52.3 40.6 129 -M 42.5 * CANYON 7870 19.7 14.1 140 21.1 16.2 130 FISHER CREEK 9100 46.2 36.6 126 -M 38.3 * MADISON PLATEAU 7750 33.2 26.0 128 34.7 28.3 123 NORTHEAST ENTRANCE 7350 16.1 11.0 146 17.7 13.4 132 PARKER PEAK 9400 33.3 23.0 145 -M 17.3 * SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142 THUMB DIVIDE 7980 25.3 19.2 132 22.8 20.0 114 TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 * WHISKEY CREEK 6800 22.5 17.8 126 25.8 22.2 116 WHITE MILL 8700 32.4 25.5 127 32.4 28.5 114 WOLVERINE 7650 16.9 11.6 146 16.6 13.5 123 ----- ----- Basin wide percent of average 130 124 WIND RIVER BURROUGHS CREEK 8750 18.9 15.1 125 19.6 17.2 114 CASTLE CREEK 8400 7.8 -M * 9.4 -M * COLD SPRINGS 9630 9.8 8.2 120 10.3 11.6 89 DEER PARK 9700 20.3 17.3 117 23.8 23.4 102 HOBBS PARK 10100 17.4 16.2 107 15.3 14.0 109 LITTLE WARM 9370 14.3 12.4 115 14.7 14.3 103 SOUTH PASS 9040 18.2 17.5 104 15.6 19.7 79 ST. LAWRENCE ALT 8620 5.9 7.5 79 9.2 9.7 95 TOGWOTEE PASS 9580 33.5 26.2 128 34.7 26.1 133 TOWNSEND CREEK 8700 9.8 9.6 102 12.4 12.7 98 ----- ----- Basin wide percent of average 114 105 BIGHORN BASIN BALD MTN. 9380 26.0 21.1 123 21.0 18.5 114 BEAR TRAP MEADOW 8200 9.4 5.0 188 9.2 9.0 102 BLACKWATER 9780 31.2 26.1 120 29.7 21.9 136 BONE SPRINGS DIV 9350 22.0 17.2 128 18.0 15.7 115 EVENING STAR 9200 36.9 31.6 117 -M 26.8 * GRAVE SPRINGS 8550 9.5 10.3 92 9.8 10.7 92 KIRWIN 9550 14.8 12.1 122 15.8 12.1 131 MARQUETTE 8760 5.0 -M * 7.8 10.8 72 MIDDLE POWDER 7760 10.8 13.2 82 11.7 13.3 88 OWL CREEK 8975 6.9 5.6 123 7.2 6.5 111 POWDER RIVER PASS 9480 16.7 11.6 144 19.2 13.3 144 SHELL CREEK 9580 19.1 15.7 122 17.2 14.3 120 SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142 SYLVAN ROAD 7120 18.3 12.7 144 23.6 18.6 127 TIMBER CREEK 7950 5.9 5.8 102 7.0 8.1 86 YOUNTS PEAK 8350 21.2 17.9 118 18.6 17.1 109 ----- ----- Basin wide percent of average 121 117 SHOSHONE RIVER BLACKWATER 9780 31.2 26.1 120 29.7 21.9 136 EVENING STAR 9200 36.9 31.6 117 -M 26.8 * KIRWIN 9550 14.8 12.1 122 15.8 12.1 131 MARQUETTE 8760 5.0 -M * 7.8 10.8 72 SYLVAN LAKE 8420 28.2 23.8 118 31.6 22.2 142 SYLVAN ROAD 7120 18.3 12.7 144 23.6 18.6 127 YOUNTS PEAK 8350 21.2 17.9 118 18.6 17.1 109 ----- ----- Basin wide percent of average 121 124 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.4 5.0 188 9.2 9.0 102 BIG GOOSE 7990 9.6 11.9 81 11.3 9.8 115 BONE SPRINGS DIV 9350 22.0 17.2 128 18.0 15.7 115 BURGESS JUNCTION 7880 12.2 12.7 96 13.1 13.1 100 CLOUD PEAK RESERVOIR 9860 18.4 14.6 126 16.9 14.0 121 DOME LAKE 8880 15.3 13.4 114 14.5 14.2 102 GRAVE SPRINGS 8550 9.5 10.3 92 9.8 10.7 92 HANSEN SAWMILL 8360 7.9 6.4 123 8.9 8.9 100 LITTLE GOOSE 8870 10.9 -M * 15.4 -M * MIDDLE POWDER 7760 10.8 13.2 82 11.7 13.3 88 POWDER RIVER PASS 9480 16.7 11.6 144 19.2 13.3 144 SOLDIER PARK 8720 9.5 -M * 10.3 -M * SUCKER CREEK 8880 14.6 12.9 113 16.1 14.6 110 TIE CREEK 6870 7.1 5.8 122 11.4 10.8 106 ----- ----- Basin wide percent of average 114 109 BELLE FOURCHE BLIND PARK 6890 9.4 7.9 119 17.5 11.8 148 COLE CANYON 5910 7.4 7.2 103 12.7 7.2 176 NORTH RAPID CREEK 6130 7.6 8.9 85 14.8 9.1 163 ----- ----- Basin wide percent of average 102 160 UPPER N. PLATTE RIVER CINNABAR PARK 9574 26.6 17.9 149 34.5 21.0 164 COLUMBINE 9160 35.5 25.0 142 37.0 26.5 140 DIVIDE PEAK 8880 25.9 20.7 125 30.6 21.8 140 ELK RIVER 8700 26.4 20.1 131 28.6 20.7 138 JOE WRIGHT 10120 35.8 22.9 156 38.3 26.4 145 NORTH FRENCH CREEK 10130 50.3 31.6 159 -M 26.1 * OLD BATTLE 10000 46.6 33.9 137 46.4 36.3 128 SAGE CREEK BASIN 7850 21.6 12.0 180 20.6 12.7 162 SOUTH BRUSH CREEK 8440 20.1 13.4 150 24.1 17.5 138 TOWER 10500 59.3 48.3 123 47.5 40.5 117 WEBBER SPRINGS 9250 33.0 26.3 125 38.5 28.2 137 WILLOW CREEK PASS 9540 21.7 13.1 166 19.6 13.7 143 ----- ----- Basin wide percent of average 141 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 34.1 25.6 133 32.7 23.6 139 CASPER MTN. 7900 11.7 16.0 73 15.5 15.8 98 DEADMAN HILL 10220 22.3 17.7 126 23.6 18.1 130 DEER PARK 9700 20.3 17.3 117 23.8 23.4 102 LAPRELE CREEK 8375 14.0 10.8 130 15.6 13.6 115 RENO HILL 8400 15.9 15.5 103 18.8 16.5 114 ROACH 9700 21.6 18.2 119 25.1 19.8 127 SAND LAKE 10050 40.6 34.2 119 -M 25.7 * SOUTH PASS 9040 18.2 17.5 104 15.6 19.7 79 WINDY PEAK 7900 10.9 8.4 130 14.6 11.3 129 ----- ----- Basin wide percent of average 116 115 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.7 * 16.6 16.8 99 DIVIDE PEAK 8880 25.9 20.7 125 30.6 21.8 140 OLD BATTLE 10000 46.6 33.9 137 46.4 36.3 128 SANDSTONE RS 8150 19.6 14.1 139 -M 19.7 * WHISKEY PARK 8950 -M 30.7 * 43.7 30.2 145 ----- ----- Basin wide percent of average 134 131 UPPER GREEN RIVER BIG SANDY OPENING 9080 17.5 15.2 115 17.5 14.1 124 BLIND BULL SUM 8650 37.9 28.9 131 26.0 23.4 111 EAST RIM DIVIDE 7930 17.4 13.8 126 15.3 12.7 120 ELKHART PARK G.S. 9400 15.9 14.0 114 15.6 14.2 110 GROS VENTRE SUMMIT 8750 17.2 14.6 118 17.3 13.7 126 GUNSIGHT PASS 9820 20.9 -M * 19.5 -M * KENDALL R.S. 7740 15.1 14.1 107 17.3 15.2 114 LOOMIS PARK 8240 23.3 17.4 134 23.5 18.3 128 NEW FORK LAKE 8340 14.1 11.5 123 12.7 12.0 106 POCKET CREEK 9360 14.7 -M * 16.5 -M * SNIDER BASIN 8060 22.3 15.0 149 20.9 17.1 122 SPRING CREEK DIVIDE 9000 38.8 28.1 138 35.6 27.9 128 TRIPLE PEAK 8500 37.5 25.8 145 37.7 26.1 144 ----- ----- Basin wide percent of average 130 123 LOWER GREEN RIVER HAMS FORK 7840 17.3 10.8 160 16.4 13.0 126 HEWINTA 9519 13.7 12.5 110 19.1 15.6 122 HICKERSON PARK 9145 7.9 8.4 94 11.7 8.6 136 HOLE-IN-ROCK 9150 9.6 7.5 128 13.1 8.1 162 INDIAN CREEK 9425 34.7 29.3 118 29.7 27.0 110 KELLEY R.S. 8180 23.5 17.4 135 26.2 21.5 122 STEEL CREEK PARK 10200 19.8 16.8 118 22.4 17.6 127 ----- ----- Basin wide percent of average 123 124 UPPER BEAR RIVER BUG LAKE 7950 33.4 21.8 153 31.3 20.3 154 HAYDEN FORK 9212 26.3 16.8 157 32.6 22.4 146 KELLEY R.S. 8180 23.5 17.4 135 26.2 21.5 122 LILY LAKE 9156 24.3 14.6 166 24.8 18.8 132 MONTE CRISTO 8960 42.8 30.6 140 40.4 27.0 150 SALT RIVER SUMMIT 7760 19.4 14.8 131 24.0 19.9 121 TRIAL LAKE 9992 40.2 26.1 154 36.5 26.4 138 ----- ----- Basin wide percent of average 148 138 ----------------------------------------------------------------------------- -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.