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 3 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 22.1 18.1 122 24.6 21.9 112 COTTONWOOD CREEK 7670 28.4 24.3 117 36.4 28.0 130 GRAND TARGHEE 9260 49.1 -M * -M -M * GRANITE CREEK 6770 22.5 18.5 122 24.6 20.3 121 GRASSY LAKE 7265 40.1 36.4 110 41.8 36.7 114 GROS VENTRE SUMMIT 8750 14.7 14.5 101 14.5 13.2 110 GUNSIGHT PASS 9820 18.6 -M * 17.7 -M * LEWIS LAKE DIVIDE 7850 41.6 36.1 115 -M 37.5 * PHILLIPS BENCH 8200 33.9 29.5 115 33.6 29.6 114 SALT RIVER SUMMIT 7760 17.6 14.8 119 22.4 19.2 117 SNAKE RIVER STATION 6920 -M 19.1 * 26.9 22.7 119 SPRING CREEK DIVIDE 9000 37.0 27.2 136 34.0 27.0 126 THUMB DIVIDE 7980 22.6 19.3 117 -M 19.3 * TOGWOTEE PASS 9580 29.7 25.4 117 31.2 25.2 124 TWO OCEAN PLATEAU 9240 -M 28.7 * -M 28.3 * WILLOW CREEK 8380 39.0 30.9 126 42.0 32.9 128 ----- ----- Basin wide percent of average 118 120 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.7 23.8 116 26.2 20.5 128 BLACK BEAR 8170 48.7 40.0 122 -M 41.3 * CANYON 7870 17.4 13.9 125 18.9 15.8 120 FISHER CREEK 9100 43.2 35.6 121 41.0 37.1 111 MADISON PLATEAU 7750 30.4 25.6 119 32.2 27.4 118 NORTHEAST ENTRANCE 7350 14.6 11.3 129 16.3 12.9 126 PARKER PEAK 9400 30.1 22.0 137 -M 16.6 * SYLVAN LAKE 8420 25.4 23.1 110 28.9 21.3 136 THUMB DIVIDE 7980 22.6 19.3 117 -M 19.3 * TWO OCEAN PLATEAU 9240 -M 28.7 * -M 28.3 * WHISKEY CREEK 6800 21.3 17.5 122 24.1 21.4 113 WHITE MILL 8700 29.8 24.8 120 29.9 27.6 108 WOLVERINE 7650 15.1 11.7 129 15.0 13.0 115 ----- ----- Basin wide percent of average 121 118 WIND RIVER BURROUGHS CREEK 8750 15.9 14.9 107 16.7 16.6 101 CASTLE CREEK 8400 6.5 -M * 8.0 -M * COLD SPRINGS 9630 8.0 9.0 89 8.5 10.9 78 DEER PARK 9700 19.0 17.4 109 22.2 22.4 99 HOBBS PARK 10100 14.7 15.5 95 12.9 13.1 98 LITTLE WARM 9370 12.6 12.2 103 13.0 13.7 95 SOUTH PASS 9040 17.3 17.0 102 15.2 18.8 81 ST. LAWRENCE ALT 8620 4.1 7.5 55 7.0 9.1 77 TOGWOTEE PASS 9580 29.7 25.4 117 31.2 25.2 124 TOWNSEND CREEK 8700 8.5 9.2 92 11.2 11.9 94 ----- ----- Basin wide percent of average 101 97 BIGHORN BASIN BALD MTN. 9380 24.1 20.1 120 19.3 17.7 109 BEAR TRAP MEADOW 8200 8.6 5.2 165 8.3 8.4 99 BLACKWATER 9780 27.2 25.1 108 26.2 21.0 125 BONE SPRINGS DIV 9350 20.4 16.6 123 16.7 14.9 112 EVENING STAR 9200 33.7 30.3 111 -M 25.8 * GRAVE SPRINGS 8550 8.8 9.6 92 9.2 9.9 93 KIRWIN 9550 12.0 11.6 103 13.1 11.5 114 MARQUETTE 8760 3.1 -M * 6.4 10.0 64 MIDDLE POWDER 7760 10.3 12.2 84 11.4 12.6 90 OWL CREEK 8975 5.3 5.7 93 6.0 6.0 100 POWDER RIVER PASS 9480 15.6 11.1 141 18.0 12.6 143 SHELL CREEK 9580 18.3 15.1 121 16.6 13.6 122 SYLVAN LAKE 8420 25.4 23.1 110 28.9 21.3 136 SYLVAN ROAD 7120 16.0 12.9 124 21.4 18.0 119 TIMBER CREEK 7950 4.2 5.9 71 5.2 7.5 69 YOUNTS PEAK 8350 18.4 17.5 105 15.9 16.5 96 ----- ----- Basin wide percent of average 112 110 SHOSHONE RIVER BLACKWATER 9780 27.2 25.1 108 26.2 21.0 125 EVENING STAR 9200 33.7 30.3 111 -M 25.8 * KIRWIN 9550 12.0 11.6 103 13.1 11.5 114 MARQUETTE 8760 3.1 -M * 6.4 10.0 64 SYLVAN LAKE 8420 25.4 23.1 110 28.9 21.3 136 SYLVAN ROAD 7120 16.0 12.9 124 21.4 18.0 119 YOUNTS PEAK 8350 18.4 17.5 105 15.9 16.5 96 ----- ----- Basin wide percent of average 110 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.6 5.2 165 8.3 8.4 99 BIG GOOSE 7990 8.5 11.0 77 10.4 8.8 118 BONE SPRINGS DIV 9350 20.4 16.6 123 16.7 14.9 112 BURGESS JUNCTION 7880 11.0 11.9 92 11.9 12.4 96 CLOUD PEAK RESERVOIR 9860 16.1 13.8 117 15.0 13.1 115 DOME LAKE 8880 14.2 12.8 111 13.6 13.4 101 GRAVE SPRINGS 8550 8.8 9.6 92 9.2 9.9 93 HANSEN SAWMILL 8360 7.0 6.5 108 8.0 8.4 95 LITTLE GOOSE 8870 9.8 -M * 14.2 -M * MIDDLE POWDER 7760 10.3 12.2 84 11.4 12.6 90 POWDER RIVER PASS 9480 15.6 11.1 141 18.0 12.6 143 SOLDIER PARK 8720 8.0 -M * 9.3 -M * SUCKER CREEK 8880 13.6 12.1 112 15.0 13.8 109 TIE CREEK 6870 6.4 6.2 103 10.5 10.1 104 ----- ----- Basin wide percent of average 109 107 BELLE FOURCHE BLIND PARK 6890 10.2 8.6 119 17.1 11.2 153 COLE CANYON 5910 8.1 6.9 117 12.4 6.8 182 NORTH RAPID CREEK 6130 8.5 8.4 101 14.4 8.7 166 ----- ----- Basin wide percent of average 112 164 UPPER N. PLATTE RIVER CINNABAR PARK 9574 25.6 17.9 143 33.4 20.3 165 COLUMBINE 9160 36.4 25.1 145 36.2 25.6 141 DIVIDE PEAK 8880 24.0 20.2 119 28.2 21.1 134 ELK RIVER 8700 26.0 19.8 131 27.3 19.9 137 JOE WRIGHT 10120 33.1 21.8 152 36.2 25.2 144 NORTH FRENCH CREEK 10130 47.3 30.0 158 -M 25.0 * OLD BATTLE 10000 44.5 32.8 136 -M 35.1 * SAGE CREEK BASIN 7850 20.9 11.7 179 19.0 12.2 156 SOUTH BRUSH CREEK 8440 18.6 13.3 140 22.2 16.7 133 TOWER 10500 57.9 46.4 125 47.1 39.0 121 WEBBER SPRINGS 9250 31.6 26.4 120 36.7 27.1 135 WILLOW CREEK PASS 9540 19.7 12.3 160 17.9 13.0 138 ----- ----- Basin wide percent of average 139 138 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 32.8 24.3 135 32.0 22.5 142 CASPER MTN. 7900 10.6 14.9 71 13.9 14.7 95 DEADMAN HILL 10220 21.5 16.7 129 22.2 17.2 129 DEER PARK 9700 19.0 17.4 109 22.2 22.4 99 LAPRELE CREEK 8375 12.5 11.0 114 14.3 12.8 112 RENO HILL 8400 13.9 14.6 95 16.9 15.3 110 ROACH 9700 21.1 17.4 121 24.3 18.9 129 SAND LAKE 10050 38.1 33.1 115 -M 24.5 * SOUTH PASS 9040 17.3 17.0 102 15.2 18.8 81 WINDY PEAK 7900 10.0 8.3 120 13.1 10.7 122 ----- ----- Basin wide percent of average 113 114 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.8 * 15.0 16.1 93 DIVIDE PEAK 8880 24.0 20.2 119 28.2 21.1 134 OLD BATTLE 10000 44.5 32.8 136 -M 35.1 * SANDSTONE RS 8150 17.8 14.7 121 26.2 19.0 138 WHISKEY PARK 8950 -M 30.5 * 42.0 29.1 144 ----- ----- Basin wide percent of average 127 131 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.6 14.8 105 15.8 13.6 116 BLIND BULL SUM 8650 34.5 28.5 121 23.7 22.7 104 EAST RIM DIVIDE 7930 15.4 13.4 115 13.6 12.3 111 ELKHART PARK G.S. 9400 14.2 13.7 104 13.9 13.6 102 GROS VENTRE SUMMIT 8750 14.7 14.5 101 14.5 13.2 110 GUNSIGHT PASS 9820 18.6 -M * 17.7 -M * KENDALL R.S. 7740 13.5 14.5 93 15.7 14.8 106 LOOMIS PARK 8240 21.3 17.5 122 21.4 17.8 120 NEW FORK LAKE 8340 13.0 11.4 114 12.1 11.5 105 POCKET CREEK 9360 12.7 -M * 14.7 -M * SNIDER BASIN 8060 21.1 14.8 143 20.0 16.5 121 SPRING CREEK DIVIDE 9000 37.0 27.2 136 34.0 27.0 126 TRIPLE PEAK 8500 35.4 25.4 139 35.2 25.3 139 ----- ----- Basin wide percent of average 120 117 LOWER GREEN RIVER HAMS FORK 7840 16.6 11.8 141 15.7 12.5 126 HEWINTA 9519 12.1 12.3 98 17.7 14.9 119 HICKERSON PARK 9145 7.1 7.9 90 10.3 8.1 127 HOLE-IN-ROCK 9150 7.9 7.3 108 11.2 7.6 147 INDIAN CREEK 9425 32.7 28.5 115 28.3 26.0 109 KELLEY R.S. 8180 21.7 17.2 126 24.6 20.8 118 STEEL CREEK PARK 10200 17.9 16.1 111 20.4 16.6 123 ----- ----- Basin wide percent of average 115 120 UPPER BEAR RIVER BUG LAKE 7950 31.3 21.4 146 29.9 19.6 153 HAYDEN FORK 9212 23.6 16.7 141 29.8 21.4 139 KELLEY R.S. 8180 21.7 17.2 126 24.6 20.8 118 LILY LAKE 9156 22.7 13.9 163 22.2 17.9 124 MONTE CRISTO 8960 39.8 30.2 132 37.6 26.0 145 SALT RIVER SUMMIT 7760 17.6 14.8 119 22.4 19.2 117 TRIAL LAKE 9992 37.2 25.5 146 34.6 25.5 136 ----- ----- 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.