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: APRIL 5 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.5 18.0 125 24.7 22.0 112 COTTONWOOD CREEK 7670 30.2 24.4 124 36.8 28.3 130 GRAND TARGHEE 9260 49.6 -M * 37.8 -M * GRANITE CREEK 6770 22.4 18.4 122 24.6 20.4 121 GRASSY LAKE 7265 40.3 36.7 110 42.0 37.0 114 GROS VENTRE SUMMIT 8750 14.9 14.5 103 14.7 13.3 111 GUNSIGHT PASS 9820 18.6 -M * 17.7 -M * LEWIS LAKE DIVIDE 7850 42.3 36.3 117 -M 37.8 * PHILLIPS BENCH 8200 33.8 29.8 113 33.8 29.9 113 SALT RIVER SUMMIT 7760 17.9 14.9 120 22.6 19.4 116 SNAKE RIVER STATION 6920 -M 19.0 * 27.0 22.9 118 SPRING CREEK DIVIDE 9000 37.1 27.5 135 34.0 27.3 125 THUMB DIVIDE 7980 22.8 19.3 118 20.7 19.5 106 TOGWOTEE PASS 9580 29.9 25.7 116 31.5 25.4 124 TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 * WILLOW CREEK 8380 38.8 31.1 125 42.1 33.2 127 ----- ----- Basin wide percent of average 119 119 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.1 24.1 117 26.4 20.7 128 BLACK BEAR 8170 49.0 40.3 122 44.7 41.6 107 CANYON 7870 17.7 14.0 126 19.0 15.9 119 FISHER CREEK 9100 43.8 35.9 122 41.1 37.5 110 MADISON PLATEAU 7750 30.7 25.8 119 32.5 27.6 118 NORTHEAST ENTRANCE 7350 15.0 11.2 134 16.5 13.1 126 PARKER PEAK 9400 30.6 22.3 137 26.8 16.8 160 SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136 THUMB DIVIDE 7980 22.8 19.3 118 20.7 19.5 106 TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 * WHISKEY CREEK 6800 21.1 17.7 119 24.2 21.6 112 WHITE MILL 8700 30.2 25.0 121 30.2 27.8 109 WOLVERINE 7650 15.3 11.7 131 15.3 13.2 116 ----- ----- Basin wide percent of average 122 118 WIND RIVER BURROUGHS CREEK 8750 16.0 14.9 107 16.8 16.8 100 CASTLE CREEK 8400 6.6 -M * 8.0 -M * COLD SPRINGS 9630 8.1 8.8 92 8.5 11.1 77 DEER PARK 9700 19.3 17.3 112 22.6 22.7 100 HOBBS PARK 10100 15.3 15.7 97 13.5 13.4 101 LITTLE WARM 9370 12.7 12.3 103 13.1 13.9 94 SOUTH PASS 9040 17.6 17.2 102 15.5 19.1 81 ST. LAWRENCE ALT 8620 4.4 7.6 58 7.5 9.2 82 TOGWOTEE PASS 9580 29.9 25.7 116 31.5 25.4 124 TOWNSEND CREEK 8700 9.2 9.4 98 11.7 12.1 97 ----- ----- Basin wide percent of average 103 98 BIGHORN BASIN BALD MTN. 9380 24.4 20.3 120 19.4 18.0 108 BEAR TRAP MEADOW 8200 8.7 5.1 171 8.5 8.6 99 BLACKWATER 9780 27.7 25.4 109 26.5 21.2 125 BONE SPRINGS DIV 9350 21.0 16.8 125 17.4 15.1 115 EVENING STAR 9200 34.3 30.5 112 36.5 26.1 140 GRAVE SPRINGS 8550 9.0 9.8 92 9.2 10.1 91 KIRWIN 9550 12.2 11.8 103 13.3 11.6 115 MARQUETTE 8760 3.5 -M * 6.5 10.2 64 MIDDLE POWDER 7760 10.4 12.4 84 11.4 12.8 89 OWL CREEK 8975 5.5 5.8 95 6.0 6.2 97 POWDER RIVER PASS 9480 15.9 11.2 142 18.3 12.8 143 SHELL CREEK 9580 18.6 15.2 122 16.8 13.8 122 SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136 SYLVAN ROAD 7120 16.3 12.8 127 21.8 18.1 120 TIMBER CREEK 7950 4.2 5.9 71 5.2 7.7 68 YOUNTS PEAK 8350 18.6 17.6 106 16.1 16.6 97 ----- ----- Basin wide percent of average 113 114 SHOSHONE RIVER BLACKWATER 9780 27.7 25.4 109 26.5 21.2 125 EVENING STAR 9200 34.3 30.5 112 36.5 26.1 140 KIRWIN 9550 12.2 11.8 103 13.3 11.6 115 MARQUETTE 8760 3.5 -M * 6.5 10.2 64 SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136 SYLVAN ROAD 7120 16.3 12.8 127 21.8 18.1 120 YOUNTS PEAK 8350 18.6 17.6 106 16.1 16.6 97 ----- ----- Basin wide percent of average 111 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.7 5.1 171 8.5 8.6 99 BIG GOOSE 7990 9.0 11.3 80 10.8 9.0 120 BONE SPRINGS DIV 9350 21.0 16.8 125 17.4 15.1 115 BURGESS JUNCTION 7880 11.5 12.2 94 12.3 12.6 98 CLOUD PEAK RESERVOIR 9860 17.0 13.9 122 15.7 13.4 117 DOME LAKE 8880 14.6 13.0 112 13.9 13.6 102 GRAVE SPRINGS 8550 9.0 9.8 92 9.2 10.1 91 HANSEN SAWMILL 8360 7.3 6.6 111 8.3 8.5 98 LITTLE GOOSE 8870 10.3 -M * 14.7 -M * MIDDLE POWDER 7760 10.4 12.4 84 11.4 12.8 89 POWDER RIVER PASS 9480 15.9 11.2 142 18.3 12.8 143 SOLDIER PARK 8720 8.4 -M * 9.7 -M * SUCKER CREEK 8880 14.0 12.3 114 15.5 14.0 111 TIE CREEK 6870 6.6 6.1 108 10.8 10.3 105 ----- ----- Basin wide percent of average 111 108 BELLE FOURCHE BLIND PARK 6890 10.3 8.3 124 17.3 11.4 152 COLE CANYON 5910 8.1 7.0 116 12.6 6.9 183 NORTH RAPID CREEK 6130 8.7 8.6 101 14.6 8.8 166 ----- ----- Basin wide percent of average 113 164 UPPER N. PLATTE RIVER CINNABAR PARK 9574 25.9 18.0 144 33.6 20.5 164 COLUMBINE 9160 35.3 25.1 141 36.6 25.9 141 DIVIDE PEAK 8880 24.2 20.4 119 29.2 21.3 137 ELK RIVER 8700 26.4 20.0 132 27.8 20.1 138 JOE WRIGHT 10120 34.3 22.1 155 37.2 25.5 146 NORTH FRENCH CREEK 10130 48.4 30.5 159 -M 25.3 * OLD BATTLE 10000 44.7 33.1 135 46.2 35.5 130 SAGE CREEK BASIN 7850 21.4 11.8 181 19.6 12.3 159 SOUTH BRUSH CREEK 8440 19.6 13.3 147 23.1 16.9 137 TOWER 10500 58.0 47.0 123 47.1 39.4 120 WEBBER SPRINGS 9250 32.2 26.4 122 37.5 27.4 137 WILLOW CREEK PASS 9540 20.7 12.6 164 18.8 13.2 142 ----- ----- Basin wide percent of average 140 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 33.0 24.6 134 32.2 22.8 141 CASPER MTN. 7900 11.4 15.2 75 14.9 15.0 99 DEADMAN HILL 10220 21.3 17.0 125 23.0 17.4 132 DEER PARK 9700 19.3 17.3 112 22.6 22.7 100 LAPRELE CREEK 8375 13.4 11.0 122 14.8 13.0 114 RENO HILL 8400 15.2 14.9 102 18.0 15.6 115 ROACH 9700 21.5 17.7 121 24.6 19.2 128 SAND LAKE 10050 39.2 33.4 117 -M 24.9 * SOUTH PASS 9040 17.6 17.2 102 15.5 19.1 81 WINDY PEAK 7900 10.4 8.4 124 13.6 10.9 125 ----- ----- Basin wide percent of average 114 115 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.5 * 15.7 16.3 96 DIVIDE PEAK 8880 24.2 20.4 119 29.2 21.3 137 OLD BATTLE 10000 44.7 33.1 135 46.2 35.5 130 SANDSTONE RS 8150 18.8 14.5 130 26.9 19.2 140 WHISKEY PARK 8950 -M 30.6 * -M 29.4 * ----- ----- Basin wide percent of average 129 128 UPPER GREEN RIVER BIG SANDY OPENING 9080 16.1 15.0 107 16.2 13.8 117 BLIND BULL SUM 8650 34.9 28.6 122 23.8 22.9 104 EAST RIM DIVIDE 7930 15.5 13.5 115 13.7 12.4 110 ELKHART PARK G.S. 9400 14.2 13.8 103 13.9 13.8 101 GROS VENTRE SUMMIT 8750 14.9 14.5 103 14.7 13.3 111 GUNSIGHT PASS 9820 18.6 -M * 17.7 -M * KENDALL R.S. 7740 13.7 14.4 95 15.8 14.9 106 LOOMIS PARK 8240 21.2 17.5 121 21.6 17.9 121 NEW FORK LAKE 8340 13.1 11.5 114 12.1 11.7 103 POCKET CREEK 9360 12.9 -M * 14.9 -M * SNIDER BASIN 8060 21.2 14.9 142 20.0 16.6 120 SPRING CREEK DIVIDE 9000 37.1 27.5 135 34.0 27.3 125 TRIPLE PEAK 8500 35.7 25.6 139 35.6 25.5 140 ----- ----- Basin wide percent of average 121 116 LOWER GREEN RIVER HAMS FORK 7840 16.8 11.5 146 15.9 12.6 126 HEWINTA 9519 12.5 12.4 101 18.1 15.1 120 HICKERSON PARK 9145 7.3 8.0 91 10.4 8.2 127 HOLE-IN-ROCK 9150 8.8 7.4 119 11.5 7.8 147 INDIAN CREEK 9425 33.0 28.8 115 28.4 26.3 108 KELLEY R.S. 8180 21.8 17.3 126 24.7 21.0 118 STEEL CREEK PARK 10200 18.2 16.3 112 20.9 16.9 124 ----- ----- Basin wide percent of average 116 120 UPPER BEAR RIVER BUG LAKE 7950 31.2 21.6 144 30.2 19.8 153 HAYDEN FORK 9212 24.6 16.8 146 30.5 21.7 141 KELLEY R.S. 8180 21.8 17.3 126 24.7 21.0 118 LILY LAKE 9156 22.6 14.2 159 22.9 18.1 127 MONTE CRISTO 8960 39.9 30.4 131 37.7 26.3 143 SALT RIVER SUMMIT 7760 17.9 14.9 120 22.6 19.4 116 TRIAL LAKE 9992 37.4 25.7 146 35.1 25.7 137 ----- ----- Basin wide percent of average 139 134 ----------------------------------------------------------------------------- -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.