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: MARCH 6 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.3 16.5 105 20.1 19.2 105 COTTONWOOD CREEK 7670 22.5 19.5 115 29.9 23.8 126 GRAND TARGHEE 9260 40.1 -M * 26.4 -M * GRANITE CREEK 6770 18.2 16.8 108 19.7 18.0 109 GRASSY LAKE 7265 31.8 30.7 104 34.1 32.0 107 GROS VENTRE SUMMIT 8750 12.9 12.0 108 12.5 11.1 113 GUNSIGHT PASS 9820 14.5 -M * 14.5 -M * LEWIS LAKE DIVIDE 7850 31.0 30.8 101 29.8 32.6 91 PHILLIPS BENCH 8200 25.9 24.9 104 26.7 25.5 105 SALT RIVER SUMMIT 7760 14.7 12.6 117 18.8 16.3 115 SNAKE RIVER STATION 6920 -M 17.2 * 22.0 20.0 110 SPRING CREEK DIVIDE 9000 29.5 23.0 128 28.4 23.2 122 THUMB DIVIDE 7980 17.3 16.1 107 17.0 16.6 102 TOGWOTEE PASS 9580 24.2 21.4 113 25.7 21.3 121 TWO OCEAN PLATEAU 9240 -M 24.1 * -M 24.2 * WILLOW CREEK 8380 28.8 26.3 110 33.6 28.0 120 ----- ----- Basin wide percent of average 109 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.5 20.6 104 20.5 17.7 116 BLACK BEAR 8170 37.0 34.5 107 35.4 34.6 102 CANYON 7870 14.1 11.9 118 15.1 13.4 113 FISHER CREEK 9100 34.0 30.8 110 32.8 31.7 103 MADISON PLATEAU 7750 23.0 21.9 105 25.0 22.9 109 NORTHEAST ENTRANCE 7350 11.8 10.1 117 13.1 11.1 118 PARKER PEAK 9400 24.4 18.9 129 -M 14.2 * SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127 THUMB DIVIDE 7980 17.3 16.1 107 17.0 16.6 102 TWO OCEAN PLATEAU 9240 -M 24.1 * -M 24.2 * WHISKEY CREEK 6800 16.8 15.2 111 19.2 18.0 107 WHITE MILL 8700 23.2 21.2 109 23.7 23.5 101 WOLVERINE 7650 12.9 11.0 117 12.5 11.5 109 ----- ----- Basin wide percent of average 111 108 WIND RIVER BURROUGHS CREEK 8750 12.8 13.1 98 13.4 14.1 95 CASTLE CREEK 8400 5.7 -M * 6.5 -M * COLD SPRINGS 9630 7.1 7.6 93 6.8 8.7 78 DEER PARK 9700 16.4 14.6 112 19.1 18.5 103 HOBBS PARK 10100 12.4 12.5 99 10.8 10.3 105 LITTLE WARM 9370 10.2 10.0 102 10.2 11.3 90 SOUTH PASS 9040 15.3 14.7 104 13.4 15.5 86 ST. LAWRENCE ALT 8620 4.2 6.3 67 5.9 7.2 82 TOGWOTEE PASS 9580 24.2 21.4 113 25.7 21.3 121 TOWNSEND CREEK 8700 7.5 7.3 103 9.5 9.2 103 ----- ----- Basin wide percent of average 102 99 BIGHORN BASIN BALD MTN. 9380 19.7 16.6 119 16.1 14.6 110 BEAR TRAP MEADOW 8200 6.8 4.6 148 6.8 6.6 103 BLACKWATER 9780 21.4 21.2 101 21.0 17.8 118 BONE SPRINGS DIV 9350 16.1 13.7 118 13.3 12.0 111 EVENING STAR 9200 26.8 26.0 103 29.5 22.4 132 GRAVE SPRINGS 8550 7.2 7.7 94 7.3 8.1 90 KIRWIN 9550 9.4 9.6 98 10.4 9.5 109 MARQUETTE 8760 2.0 7.1 28 5.3 7.8 68 MIDDLE POWDER 7760 8.0 9.4 85 9.8 10.0 98 OWL CREEK 8975 4.6 4.3 107 4.5 4.6 98 POWDER RIVER PASS 9480 11.9 9.1 131 13.9 10.3 135 SHELL CREEK 9580 13.9 12.3 113 12.6 11.1 114 SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127 SYLVAN ROAD 7120 13.5 11.9 113 17.5 15.9 110 TIMBER CREEK 7950 3.0 4.4 68 3.8 5.6 68 YOUNTS PEAK 8350 14.5 15.1 96 12.5 14.0 89 ----- ----- Basin wide percent of average 103 110 SHOSHONE RIVER BLACKWATER 9780 21.4 21.2 101 21.0 17.8 118 EVENING STAR 9200 26.8 26.0 103 29.5 22.4 132 KIRWIN 9550 9.4 9.6 98 10.4 9.5 109 MARQUETTE 8760 2.0 7.1 28 5.3 7.8 68 SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127 SYLVAN ROAD 7120 13.5 11.9 113 17.5 15.9 110 YOUNTS PEAK 8350 14.5 15.1 96 12.5 14.0 89 ----- ----- Basin wide percent of average 98 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.8 4.6 148 6.8 6.6 103 BIG GOOSE 7990 6.5 8.0 81 8.2 7.0 117 BONE SPRINGS DIV 9350 16.1 13.7 118 13.3 12.0 111 BURGESS JUNCTION 7880 9.2 9.4 98 10.1 9.9 102 CLOUD PEAK RESERVOIR 9860 13.3 10.5 127 12.0 10.2 118 DOME LAKE 8880 10.4 9.9 105 10.6 10.6 100 GRAVE SPRINGS 8550 7.2 7.7 94 7.3 8.1 90 HANSEN SAWMILL 8360 5.8 5.4 107 6.4 6.5 98 LITTLE GOOSE 8870 7.3 -M * 11.5 -M * MIDDLE POWDER 7760 8.0 9.4 85 9.8 10.0 98 POWDER RIVER PASS 9480 11.9 9.1 131 13.9 10.3 135 SOLDIER PARK 8720 5.8 -M * 7.2 -M * SUCKER CREEK 8880 10.8 9.6 113 11.9 10.9 109 TIE CREEK 6870 5.9 5.2 113 8.5 8.1 105 ----- ----- Basin wide percent of average 109 108 BELLE FOURCHE BLIND PARK 6890 8.9 7.7 116 14.5 9.6 151 COLE CANYON 5910 7.5 5.9 127 10.6 5.7 186 NORTH RAPID CREEK 6130 8.3 7.0 119 12.5 7.7 162 ----- ----- Basin wide percent of average 120 163 UPPER N. PLATTE RIVER CINNABAR PARK 9574 21.1 16.3 129 21.9 17.6 124 COLUMBINE 9160 28.9 22.6 128 29.4 21.6 136 DIVIDE PEAK 8880 19.0 16.3 117 23.0 17.7 130 ELK RIVER 8700 21.4 16.7 128 22.7 16.7 136 JOE WRIGHT 10120 24.2 17.9 135 29.6 20.9 142 NORTH FRENCH CREEK 10130 37.1 23.6 157 32.2 21.0 153 OLD BATTLE 10000 35.9 27.4 131 28.2 29.6 95 SAGE CREEK BASIN 7850 17.6 9.5 185 15.8 10.3 153 SOUTH BRUSH CREEK 8440 15.7 10.6 148 18.6 13.8 135 TOWER 10500 46.6 38.8 120 45.5 33.1 137 WEBBER SPRINGS 9250 26.3 22.4 117 30.6 22.8 134 WILLOW CREEK PASS 9540 16.0 10.0 160 15.0 10.7 140 ----- ----- Basin wide percent of average 133 133 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 26.2 19.7 133 26.0 18.2 143 CASPER MTN. 7900 9.8 11.7 84 12.5 11.5 109 DEADMAN HILL 10220 18.2 13.4 136 18.9 13.9 136 DEER PARK 9700 16.4 14.6 112 19.1 18.5 103 LAPRELE CREEK 8375 10.9 9.3 117 12.1 10.4 116 RENO HILL 8400 12.5 10.9 115 14.5 12.0 121 ROACH 9700 17.7 14.4 123 21.1 15.5 136 SAND LAKE 10050 31.4 26.4 119 29.8 20.0 149 SOUTH PASS 9040 15.3 14.7 104 13.4 15.5 86 WINDY PEAK 7900 9.0 6.4 141 11.3 8.8 128 ----- ----- Basin wide percent of average 118 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.2 * 11.0 12.8 86 DIVIDE PEAK 8880 19.0 16.3 117 23.0 17.7 130 OLD BATTLE 10000 35.9 27.4 131 28.2 29.6 95 SANDSTONE RS 8150 12.7 13.1 97 -M 16.2 * WHISKEY PARK 8950 -M 25.0 * 33.5 24.3 138 ----- ----- Basin wide percent of average 119 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.9 12.6 102 13.1 11.7 112 BLIND BULL SUM 8650 25.3 24.0 105 17.9 19.6 91 EAST RIM DIVIDE 7930 13.1 11.5 114 11.4 10.6 108 ELKHART PARK G.S. 9400 11.5 11.5 100 11.4 11.3 101 GROS VENTRE SUMMIT 8750 12.9 12.0 108 12.5 11.1 113 GUNSIGHT PASS 9820 14.5 -M * 14.5 -M * KENDALL R.S. 7740 11.6 13.0 89 13.2 13.0 102 LOOMIS PARK 8240 17.2 15.1 114 17.7 15.3 116 NEW FORK LAKE 8340 11.1 9.9 112 10.2 9.9 103 POCKET CREEK 9360 10.0 -M * 12.5 -M * SNIDER BASIN 8060 17.6 12.9 136 17.1 14.2 120 SPRING CREEK DIVIDE 9000 29.5 23.0 128 28.4 23.2 122 TRIPLE PEAK 8500 26.0 21.6 120 28.1 21.5 131 ----- ----- Basin wide percent of average 113 112 LOWER GREEN RIVER HAMS FORK 7840 14.7 11.5 128 13.6 10.7 127 HEWINTA 9519 10.8 9.6 113 14.3 12.1 118 HICKERSON PARK 9145 6.4 6.1 105 8.1 6.5 125 HOLE-IN-ROCK 9150 7.0 5.9 119 8.6 6.0 143 INDIAN CREEK 9425 26.8 23.3 115 24.1 21.8 111 KELLEY R.S. 8180 17.9 14.6 123 20.9 17.7 118 STEEL CREEK PARK 10200 14.5 13.2 110 17.0 13.4 127 ----- ----- Basin wide percent of average 117 121 UPPER BEAR RIVER BUG LAKE 7950 25.4 17.8 143 24.6 16.7 147 HAYDEN FORK 9212 20.3 13.8 147 25.6 17.7 145 KELLEY R.S. 8180 17.9 14.6 123 20.9 17.7 118 LILY LAKE 9156 17.2 11.2 154 18.8 14.8 127 MONTE CRISTO 8960 31.6 25.8 122 31.6 21.9 144 SALT RIVER SUMMIT 7760 14.7 12.6 117 18.8 16.3 115 TRIAL LAKE 9992 30.7 21.5 143 29.9 21.3 140 ----- ----- 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.