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 FRIDAY: MARCH 4 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.6 16.3 102 19.7 18.9 104 COTTONWOOD CREEK 7670 22.1 19.1 116 29.5 23.5 126 GRAND TARGHEE 9260 39.3 -M * 26.4 -M * GRANITE CREEK 6770 17.5 16.5 106 19.1 17.8 107 GRASSY LAKE 7265 30.6 30.2 101 33.0 31.6 104 GROS VENTRE SUMMIT 8750 12.7 11.8 108 12.3 11.0 112 GUNSIGHT PASS 9820 14.3 -M * 14.3 -M * LEWIS LAKE DIVIDE 7850 29.5 30.3 97 28.9 32.2 90 PHILLIPS BENCH 8200 25.3 24.5 103 26.2 25.1 104 SALT RIVER SUMMIT 7760 14.5 12.4 117 18.6 16.1 116 SNAKE RIVER STATION 6920 -M 16.9 * 21.4 19.8 108 SPRING CREEK DIVIDE 9000 29.0 22.7 128 28.0 22.9 122 THUMB DIVIDE 7980 17.0 15.8 108 16.8 16.4 102 TOGWOTEE PASS 9580 23.6 21.1 112 25.1 21.1 119 TWO OCEAN PLATEAU 9240 -M 23.8 * -M 23.9 * WILLOW CREEK 8380 28.3 26.0 109 33.1 27.6 120 ----- ----- Basin wide percent of average 108 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.1 20.2 104 20.3 17.4 117 BLACK BEAR 8170 36.2 33.9 107 34.9 34.1 102 CANYON 7870 13.8 11.7 118 15.0 13.3 113 FISHER CREEK 9100 33.4 30.3 110 32.2 31.3 103 MADISON PLATEAU 7750 22.6 21.4 106 24.6 22.6 109 NORTHEAST ENTRANCE 7350 11.5 10.0 115 12.9 11.0 117 PARKER PEAK 9400 24.0 18.6 129 21.2 14.0 151 SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127 THUMB DIVIDE 7980 17.0 15.8 108 16.8 16.4 102 TWO OCEAN PLATEAU 9240 -M 23.8 * -M 23.9 * WHISKEY CREEK 6800 16.4 14.8 111 18.9 17.8 106 WHITE MILL 8700 22.7 20.8 109 23.2 23.2 100 WOLVERINE 7650 12.6 10.8 117 12.4 11.4 109 ----- ----- Basin wide percent of average 110 111 WIND RIVER BURROUGHS CREEK 8750 12.4 12.9 96 13.0 14.0 93 CASTLE CREEK 8400 5.5 -M * 6.3 -M * COLD SPRINGS 9630 7.1 7.4 96 6.8 8.6 79 DEER PARK 9700 16.4 14.5 113 19.0 18.3 104 HOBBS PARK 10100 12.3 12.1 102 10.8 10.1 107 LITTLE WARM 9370 10.0 9.7 103 10.1 11.1 91 SOUTH PASS 9040 15.3 14.4 106 13.4 15.3 88 ST. LAWRENCE ALT 8620 4.2 6.1 69 5.9 7.1 83 TOGWOTEE PASS 9580 23.6 21.1 112 25.1 21.1 119 TOWNSEND CREEK 8700 7.7 7.1 108 9.6 9.1 105 ----- ----- Basin wide percent of average 104 99 BIGHORN BASIN BALD MTN. 9380 19.5 16.3 120 16.1 14.4 112 BEAR TRAP MEADOW 8200 6.6 4.5 147 7.0 6.5 108 BLACKWATER 9780 21.2 20.9 101 20.8 17.5 119 BONE SPRINGS DIV 9350 16.0 13.5 119 13.3 11.9 112 EVENING STAR 9200 26.1 25.6 102 28.9 22.2 130 GRAVE SPRINGS 8550 6.9 7.5 92 7.0 8.0 88 KIRWIN 9550 9.2 9.3 99 10.2 9.4 109 MARQUETTE 8760 1.8 7.0 26 5.3 7.7 69 MIDDLE POWDER 7760 7.8 9.2 85 9.5 9.8 97 OWL CREEK 8975 4.6 4.2 110 4.6 4.5 102 POWDER RIVER PASS 9480 11.7 8.9 131 13.6 10.2 133 SHELL CREEK 9580 13.8 12.1 114 12.4 11.0 113 SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127 SYLVAN ROAD 7120 13.5 11.6 116 17.3 15.8 109 TIMBER CREEK 7950 3.2 4.3 74 3.8 5.5 69 YOUNTS PEAK 8350 14.1 14.9 95 12.2 13.9 88 ----- ----- Basin wide percent of average 104 110 SHOSHONE RIVER BLACKWATER 9780 21.2 20.9 101 20.8 17.5 119 EVENING STAR 9200 26.1 25.6 102 28.9 22.2 130 KIRWIN 9550 9.2 9.3 99 10.2 9.4 109 MARQUETTE 8760 1.8 7.0 26 5.3 7.7 69 SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127 SYLVAN ROAD 7120 13.5 11.6 116 17.3 15.8 109 YOUNTS PEAK 8350 14.1 14.9 95 12.2 13.9 88 ----- ----- Basin wide percent of average 98 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.6 4.5 147 7.0 6.5 108 BIG GOOSE 7990 6.3 7.9 80 8.0 6.9 116 BONE SPRINGS DIV 9350 16.0 13.5 119 13.3 11.9 112 BURGESS JUNCTION 7880 9.1 9.2 99 10.0 9.7 103 CLOUD PEAK RESERVOIR 9860 13.2 10.3 128 12.5 10.0 125 DOME LAKE 8880 10.2 9.7 105 10.6 10.4 102 GRAVE SPRINGS 8550 6.9 7.5 92 7.0 8.0 88 HANSEN SAWMILL 8360 5.6 5.3 106 6.2 6.4 97 LITTLE GOOSE 8870 7.2 -M * 11.3 -M * MIDDLE POWDER 7760 7.8 9.2 85 9.5 9.8 97 POWDER RIVER PASS 9480 11.7 8.9 131 13.6 10.2 133 SOLDIER PARK 8720 5.7 -M * 7.1 -M * SUCKER CREEK 8880 10.6 9.4 113 11.8 10.7 110 TIE CREEK 6870 5.9 5.1 116 8.4 8.0 105 ----- ----- Basin wide percent of average 109 109 BELLE FOURCHE BLIND PARK 6890 8.7 7.4 118 14.4 9.5 152 COLE CANYON 5910 7.1 5.9 120 10.4 5.6 186 NORTH RAPID CREEK 6130 8.0 7.0 114 12.4 7.6 163 ----- ----- Basin wide percent of average 117 164 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.9 16.2 129 21.9 17.4 126 COLUMBINE 9160 28.7 22.4 128 29.3 21.3 138 DIVIDE PEAK 8880 18.9 16.0 118 23.0 17.4 132 ELK RIVER 8700 21.3 16.5 129 22.7 16.5 138 JOE WRIGHT 10120 24.1 17.6 137 29.6 20.6 144 NORTH FRENCH CREEK 10130 36.7 23.2 158 32.2 20.7 156 OLD BATTLE 10000 35.1 26.9 130 28.2 29.1 97 SAGE CREEK BASIN 7850 17.5 9.3 188 15.8 10.1 156 SOUTH BRUSH CREEK 8440 15.6 10.3 151 18.6 13.6 137 TOWER 10500 45.9 38.3 120 45.3 32.6 139 WEBBER SPRINGS 9250 25.7 22.0 117 30.7 22.5 136 WILLOW CREEK PASS 9540 15.9 9.8 162 14.9 10.6 141 ----- ----- Basin wide percent of average 134 134 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.5 19.4 131 25.9 17.9 145 CASPER MTN. 7900 9.6 11.5 83 12.2 11.3 108 DEADMAN HILL 10220 18.2 13.2 138 18.9 13.6 139 DEER PARK 9700 16.4 14.5 113 19.0 18.3 104 LAPRELE CREEK 8375 10.9 9.1 120 12.1 10.3 117 RENO HILL 8400 12.3 10.7 115 14.4 11.8 122 ROACH 9700 17.6 14.2 124 21.1 15.3 138 SAND LAKE 10050 30.8 25.9 119 29.3 19.7 149 SOUTH PASS 9040 15.3 14.4 106 13.4 15.3 88 WINDY PEAK 7900 8.8 6.2 142 11.1 8.7 128 ----- ----- Basin wide percent of average 119 125 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.0 * 11.1 12.6 88 DIVIDE PEAK 8880 18.9 16.0 118 23.0 17.4 132 OLD BATTLE 10000 35.1 26.9 130 28.2 29.1 97 SANDSTONE RS 8150 12.6 12.8 98 -M 16.0 * WHISKEY PARK 8950 -M 24.5 * 33.2 23.9 139 ----- ----- Basin wide percent of average 120 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.8 12.4 103 13.1 11.6 113 BLIND BULL SUM 8650 24.4 23.6 103 17.3 19.4 89 EAST RIM DIVIDE 7930 12.9 11.3 114 11.2 10.4 108 ELKHART PARK G.S. 9400 11.3 11.4 99 11.3 11.2 101 GROS VENTRE SUMMIT 8750 12.7 11.8 108 12.3 11.0 112 GUNSIGHT PASS 9820 14.3 -M * 14.3 -M * KENDALL R.S. 7740 11.3 12.7 89 12.9 12.8 101 LOOMIS PARK 8240 16.8 14.9 113 17.5 15.1 116 NEW FORK LAKE 8340 10.9 9.8 111 10.1 9.8 103 POCKET CREEK 9360 10.0 -M * 12.5 -M * SNIDER BASIN 8060 17.2 12.7 135 16.8 14.0 120 SPRING CREEK DIVIDE 9000 29.0 22.7 128 28.0 22.9 122 TRIPLE PEAK 8500 25.3 21.3 119 27.4 21.2 129 ----- ----- Basin wide percent of average 112 112 LOWER GREEN RIVER HAMS FORK 7840 14.4 11.3 127 13.4 10.6 126 HEWINTA 9519 10.9 9.4 116 14.2 11.9 119 HICKERSON PARK 9145 6.5 6.0 108 8.2 6.4 128 HOLE-IN-ROCK 9150 6.9 5.9 117 8.6 5.9 146 INDIAN CREEK 9425 26.3 22.9 115 23.9 21.5 111 KELLEY R.S. 8180 17.6 14.3 123 20.7 17.5 118 STEEL CREEK PARK 10200 14.4 13.0 111 17.0 13.2 129 ----- ----- Basin wide percent of average 117 122 UPPER BEAR RIVER BUG LAKE 7950 25.2 17.5 144 24.3 16.5 147 HAYDEN FORK 9212 19.9 13.5 147 25.5 17.5 146 KELLEY R.S. 8180 17.6 14.3 123 20.7 17.5 118 LILY LAKE 9156 17.1 11.1 154 18.5 14.6 127 MONTE CRISTO 8960 31.3 25.4 123 31.4 21.6 145 SALT RIVER SUMMIT 7760 14.5 12.4 117 18.6 16.1 116 TRIAL LAKE 9992 30.4 21.1 144 29.9 21.0 142 ----- ----- Basin wide percent of average 135 135 ----------------------------------------------------------------------------- -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.