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 MONDAY: MARCH 7 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.5 16.6 105 20.5 19.3 106 COTTONWOOD CREEK 7670 23.0 19.7 117 30.5 23.9 128 GRAND TARGHEE 9260 40.6 -M * 26.3 -M * GRANITE CREEK 6770 18.7 16.9 111 20.1 18.1 111 GRASSY LAKE 7265 32.1 30.9 104 34.3 32.1 107 GROS VENTRE SUMMIT 8750 13.0 12.1 107 12.6 11.2 113 GUNSIGHT PASS 9820 14.8 -M * 14.7 -M * LEWIS LAKE DIVIDE 7850 31.3 31.0 101 30.1 32.8 92 PHILLIPS BENCH 8200 26.3 25.1 105 27.0 25.6 105 SALT RIVER SUMMIT 7760 15.1 12.7 119 19.1 16.4 116 SNAKE RIVER STATION 6920 -M 17.3 * 22.2 20.1 110 SPRING CREEK DIVIDE 9000 29.9 23.1 129 28.7 23.3 123 THUMB DIVIDE 7980 17.3 16.3 106 17.0 16.7 102 TOGWOTEE PASS 9580 24.8 21.6 115 26.2 21.5 122 TWO OCEAN PLATEAU 9240 -M 24.3 * -M 24.4 * WILLOW CREEK 8380 29.5 26.5 111 34.2 28.1 122 ----- ----- Basin wide percent of average 110 112 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.5 20.8 103 20.4 17.8 115 BLACK BEAR 8170 37.1 34.8 107 35.7 34.8 103 CANYON 7870 14.2 12.0 118 15.2 13.5 113 FISHER CREEK 9100 34.0 31.0 110 32.9 31.9 103 MADISON PLATEAU 7750 23.1 22.0 105 25.0 23.1 108 NORTHEAST ENTRANCE 7350 11.8 10.2 116 13.1 11.2 117 PARKER PEAK 9400 24.4 19.0 128 21.5 14.2 151 SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126 THUMB DIVIDE 7980 17.3 16.3 106 17.0 16.7 102 TWO OCEAN PLATEAU 9240 -M 24.3 * -M 24.4 * WHISKEY CREEK 6800 16.8 15.3 110 19.3 18.2 106 WHITE MILL 8700 23.2 21.4 108 23.7 23.7 100 WOLVERINE 7650 13.0 11.1 117 12.5 11.6 108 ----- ----- Basin wide percent of average 110 110 WIND RIVER BURROUGHS CREEK 8750 13.4 13.2 102 13.9 14.2 98 CASTLE CREEK 8400 6.1 -M * 7.0 -M * COLD SPRINGS 9630 7.3 7.7 95 6.9 8.7 79 DEER PARK 9700 16.5 14.8 111 19.1 18.7 102 HOBBS PARK 10100 12.4 12.6 98 10.8 10.3 105 LITTLE WARM 9370 10.5 10.0 105 10.6 11.3 94 SOUTH PASS 9040 15.5 14.8 105 13.5 15.6 87 ST. LAWRENCE ALT 8620 4.2 6.3 67 6.0 7.3 82 TOGWOTEE PASS 9580 24.8 21.6 115 26.2 21.5 122 TOWNSEND CREEK 8700 7.5 7.3 103 9.5 9.3 102 ----- ----- Basin wide percent of average 104 100 BIGHORN BASIN BALD MTN. 9380 19.8 16.7 119 16.3 14.7 111 BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.7 104 BLACKWATER 9780 21.9 21.4 102 21.5 17.9 120 BONE SPRINGS DIV 9350 16.4 13.8 119 13.6 12.1 112 EVENING STAR 9200 26.9 26.1 103 29.6 22.5 132 GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.2 91 KIRWIN 9550 9.8 9.6 102 10.8 9.6 113 MARQUETTE 8760 2.3 7.1 32 5.3 7.8 68 MIDDLE POWDER 7760 8.1 9.5 85 9.8 10.0 98 OWL CREEK 8975 5.0 4.4 114 4.9 4.6 107 POWDER RIVER PASS 9480 12.0 9.2 130 14.0 10.4 135 SHELL CREEK 9580 14.2 12.3 115 12.9 11.2 115 SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126 SYLVAN ROAD 7120 13.7 11.9 115 17.6 16.0 110 TIMBER CREEK 7950 3.4 4.4 77 4.1 5.7 72 YOUNTS PEAK 8350 14.9 15.2 98 12.8 14.1 91 ----- ----- Basin wide percent of average 105 111 SHOSHONE RIVER BLACKWATER 9780 21.9 21.4 102 21.5 17.9 120 EVENING STAR 9200 26.9 26.1 103 29.6 22.5 132 KIRWIN 9550 9.8 9.6 102 10.8 9.6 113 MARQUETTE 8760 2.3 7.1 32 5.3 7.8 68 SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126 SYLVAN ROAD 7120 13.7 11.9 115 17.6 16.0 110 YOUNTS PEAK 8350 14.9 15.2 98 12.8 14.1 91 ----- ----- Basin wide percent of average 99 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.7 104 BIG GOOSE 7990 6.5 8.1 80 8.2 7.0 117 BONE SPRINGS DIV 9350 16.4 13.8 119 13.6 12.1 112 BURGESS JUNCTION 7880 9.3 9.5 98 10.2 9.9 103 CLOUD PEAK RESERVOIR 9860 13.4 10.6 126 12.2 10.3 118 DOME LAKE 8880 10.5 9.9 106 10.8 10.7 101 GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.2 91 HANSEN SAWMILL 8360 5.9 5.5 107 6.5 6.6 98 LITTLE GOOSE 8870 7.4 -M * 11.5 -M * MIDDLE POWDER 7760 8.1 9.5 85 9.8 10.0 98 POWDER RIVER PASS 9480 12.0 9.2 130 14.0 10.4 135 SOLDIER PARK 8720 5.9 -M * 7.3 -M * SUCKER CREEK 8880 10.9 9.7 112 12.0 11.0 109 TIE CREEK 6870 5.8 5.3 109 8.3 8.2 101 ----- ----- Basin wide percent of average 109 108 BELLE FOURCHE BLIND PARK 6890 9.1 7.7 118 14.8 9.6 154 COLE CANYON 5910 7.5 5.9 127 10.6 5.7 186 NORTH RAPID CREEK 6130 8.3 7.1 117 12.5 7.7 162 ----- ----- Basin wide percent of average 120 165 UPPER N. PLATTE RIVER CINNABAR PARK 9574 21.6 16.4 132 22.0 17.7 124 COLUMBINE 9160 29.5 22.8 129 29.5 21.8 135 DIVIDE PEAK 8880 19.7 16.4 120 23.7 17.8 133 ELK RIVER 8700 21.8 16.8 130 23.1 16.8 138 JOE WRIGHT 10120 24.6 18.0 137 29.6 21.1 140 NORTH FRENCH CREEK 10130 38.2 23.8 161 32.2 21.1 153 OLD BATTLE 10000 36.9 27.6 134 28.2 29.8 95 SAGE CREEK BASIN 7850 18.4 9.5 194 16.5 10.3 160 SOUTH BRUSH CREEK 8440 16.3 10.7 152 19.1 13.9 137 TOWER 10500 47.6 39.1 122 45.6 33.3 137 WEBBER SPRINGS 9250 26.8 22.6 119 31.7 23.0 138 WILLOW CREEK PASS 9540 16.2 10.0 162 15.1 10.8 140 ----- ----- Basin wide percent of average 136 133 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 27.0 19.8 136 26.6 18.3 145 CASPER MTN. 7900 10.2 11.8 86 12.8 11.6 110 DEADMAN HILL 10220 18.4 13.5 136 19.0 14.0 136 DEER PARK 9700 16.5 14.8 111 19.1 18.7 102 LAPRELE CREEK 8375 11.6 9.4 123 12.8 10.5 122 RENO HILL 8400 12.9 11.0 117 15.0 12.1 124 ROACH 9700 17.8 14.5 123 21.3 15.6 137 SAND LAKE 10050 32.1 26.6 121 30.4 20.1 151 SOUTH PASS 9040 15.5 14.8 105 13.5 15.6 87 WINDY PEAK 7900 9.7 6.5 149 12.1 8.8 138 ----- ----- Basin wide percent of average 120 126 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.4 * 11.6 13.0 89 DIVIDE PEAK 8880 19.7 16.4 120 23.7 17.8 133 OLD BATTLE 10000 36.9 27.6 134 28.2 29.8 95 SANDSTONE RS 8150 13.5 13.2 102 -M 16.3 * WHISKEY PARK 8950 -M 25.3 * 34.0 24.4 139 ----- ----- Basin wide percent of average 123 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.9 12.6 102 13.2 11.8 112 BLIND BULL SUM 8650 25.9 24.2 107 18.4 19.7 93 EAST RIM DIVIDE 7930 13.3 11.5 116 11.6 10.6 109 ELKHART PARK G.S. 9400 11.7 11.6 101 11.6 11.4 102 GROS VENTRE SUMMIT 8750 13.0 12.1 107 12.6 11.2 113 GUNSIGHT PASS 9820 14.8 -M * 14.7 -M * KENDALL R.S. 7740 12.0 13.1 92 13.5 13.0 104 LOOMIS PARK 8240 17.6 15.2 116 18.1 15.4 118 NEW FORK LAKE 8340 11.3 10.0 113 10.3 10.0 103 POCKET CREEK 9360 10.2 -M * 12.6 -M * SNIDER BASIN 8060 17.8 13.0 137 17.3 14.2 122 SPRING CREEK DIVIDE 9000 29.9 23.1 129 28.7 23.3 123 TRIPLE PEAK 8500 26.4 21.8 121 28.5 21.6 132 ----- ----- Basin wide percent of average 114 113 LOWER GREEN RIVER HAMS FORK 7840 15.1 11.6 130 13.9 10.8 129 HEWINTA 9519 11.0 9.6 115 14.4 12.2 118 HICKERSON PARK 9145 6.8 6.1 111 8.6 6.5 132 HOLE-IN-ROCK 9150 7.1 6.0 118 8.8 6.1 144 INDIAN CREEK 9425 27.4 23.5 117 24.5 21.9 112 KELLEY R.S. 8180 18.4 14.7 125 21.3 17.8 120 STEEL CREEK PARK 10200 14.7 13.3 111 17.3 13.5 128 ----- ----- Basin wide percent of average 119 123 UPPER BEAR RIVER BUG LAKE 7950 25.9 18.0 144 25.1 16.8 149 HAYDEN FORK 9212 20.4 13.9 147 25.8 17.8 145 KELLEY R.S. 8180 18.4 14.7 125 21.3 17.8 120 LILY LAKE 9156 17.4 11.3 154 19.1 14.8 129 MONTE CRISTO 8960 32.3 26.0 124 32.2 22.1 146 SALT RIVER SUMMIT 7760 15.1 12.7 119 19.1 16.4 116 TRIAL LAKE 9992 31.2 21.7 144 30.7 21.5 143 ----- ----- Basin wide percent of average 136 136 ----------------------------------------------------------------------------- -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.