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 THURSDAY: MARCH 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 16.7 16.2 103 19.5 18.8 104 COTTONWOOD CREEK 7670 21.6 18.9 114 29.0 23.3 124 GRAND TARGHEE 9260 38.9 -M * -M -M * GRANITE CREEK 6770 17.2 16.4 105 18.8 17.6 107 GRASSY LAKE 7265 30.0 30.0 100 32.4 31.4 103 GROS VENTRE SUMMIT 8750 12.6 11.7 108 12.2 10.9 112 GUNSIGHT PASS 9820 14.0 -M * 14.0 -M * LEWIS LAKE DIVIDE 7850 29.1 30.1 97 28.5 32.0 89 PHILLIPS BENCH 8200 25.2 24.3 104 26.0 25.0 104 SALT RIVER SUMMIT 7760 14.3 12.3 116 18.4 16.0 115 SNAKE RIVER STATION 6920 -M 16.8 * 21.2 19.7 108 SPRING CREEK DIVIDE 9000 28.6 22.5 127 27.6 22.8 121 THUMB DIVIDE 7980 16.8 15.7 107 16.6 16.3 102 TOGWOTEE PASS 9580 23.6 21.0 112 25.0 20.9 120 TWO OCEAN PLATEAU 9240 -M 23.7 * -M 23.7 * WILLOW CREEK 8380 27.6 25.8 107 32.5 27.4 119 ----- ----- Basin wide percent of average 108 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 20.9 20.1 104 20.0 17.3 116 BLACK BEAR 8170 35.7 33.6 106 34.4 33.8 102 CANYON 7870 13.5 11.6 116 14.7 13.2 111 FISHER CREEK 9100 32.7 30.1 109 31.5 31.0 102 MADISON PLATEAU 7750 22.4 21.3 105 24.5 22.4 109 NORTHEAST ENTRANCE 7350 11.1 9.9 112 12.5 10.9 115 PARKER PEAK 9400 23.3 18.5 126 20.7 13.9 149 SYLVAN LAKE 8420 19.6 19.0 103 22.9 18.1 127 THUMB DIVIDE 7980 16.8 15.7 107 16.6 16.3 102 TWO OCEAN PLATEAU 9240 -M 23.7 * -M 23.7 * WHISKEY CREEK 6800 16.2 14.7 110 18.7 17.7 106 WHITE MILL 8700 22.1 20.7 107 22.7 23.0 99 WOLVERINE 7650 12.4 10.8 115 12.2 11.3 108 ----- ----- Basin wide percent of average 109 110 WIND RIVER BURROUGHS CREEK 8750 12.4 12.8 97 13.0 13.9 94 CASTLE CREEK 8400 5.5 -M * 6.3 -M * COLD SPRINGS 9630 7.1 7.3 97 6.8 8.5 80 DEER PARK 9700 16.2 14.4 113 18.7 18.2 103 HOBBS PARK 10100 12.3 12.0 103 10.8 10.1 107 LITTLE WARM 9370 9.9 9.7 102 10.0 11.0 91 SOUTH PASS 9040 15.1 14.3 106 13.2 15.2 87 ST. LAWRENCE ALT 8620 4.2 6.0 70 5.9 7.1 83 TOGWOTEE PASS 9580 23.6 21.0 112 25.0 20.9 120 TOWNSEND CREEK 8700 7.6 7.0 109 9.5 9.0 106 ----- ----- Basin wide percent of average 104 99 BIGHORN BASIN BALD MTN. 9380 19.4 16.3 119 15.9 14.3 111 BEAR TRAP MEADOW 8200 6.3 4.4 143 6.7 6.5 103 BLACKWATER 9780 20.8 20.7 100 20.5 17.4 118 BONE SPRINGS DIV 9350 15.7 13.4 117 13.0 11.8 110 EVENING STAR 9200 25.9 25.4 102 28.6 22.0 130 GRAVE SPRINGS 8550 6.7 7.5 89 6.9 7.9 87 KIRWIN 9550 9.2 9.2 100 10.2 9.3 110 MARQUETTE 8760 2.0 7.0 29 5.3 7.6 70 MIDDLE POWDER 7760 7.6 9.2 83 9.4 9.7 97 OWL CREEK 8975 4.6 4.2 110 4.6 4.5 102 POWDER RIVER PASS 9480 11.4 8.9 128 13.3 10.1 132 SHELL CREEK 9580 13.5 12.0 113 12.2 10.9 112 SYLVAN LAKE 8420 19.6 19.0 103 22.9 18.1 127 SYLVAN ROAD 7120 13.4 11.5 117 17.1 15.7 109 TIMBER CREEK 7950 3.1 4.2 74 3.8 5.5 69 YOUNTS PEAK 8350 13.9 14.8 94 12.0 13.8 87 ----- ----- Basin wide percent of average 103 109 SHOSHONE RIVER BLACKWATER 9780 20.8 20.7 100 20.5 17.4 118 EVENING STAR 9200 25.9 25.4 102 28.6 22.0 130 KIRWIN 9550 9.2 9.2 100 10.2 9.3 110 MARQUETTE 8760 2.0 7.0 29 5.3 7.6 70 SYLVAN LAKE 8420 19.6 19.0 103 22.9 18.1 127 SYLVAN ROAD 7120 13.4 11.5 117 17.1 15.7 109 YOUNTS PEAK 8350 13.9 14.8 94 12.0 13.8 87 ----- ----- Basin wide percent of average 97 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.3 4.4 143 6.7 6.5 103 BIG GOOSE 7990 6.1 7.8 78 7.8 6.9 113 BONE SPRINGS DIV 9350 15.7 13.4 117 13.0 11.8 110 BURGESS JUNCTION 7880 8.8 9.1 97 9.8 9.6 102 CLOUD PEAK RESERVOIR 9860 12.7 10.2 125 12.0 9.9 121 DOME LAKE 8880 9.9 9.6 103 10.3 10.4 99 GRAVE SPRINGS 8550 6.7 7.5 89 6.9 7.9 87 HANSEN SAWMILL 8360 5.3 5.2 102 5.9 6.4 92 LITTLE GOOSE 8870 6.8 -M * 11.1 -M * MIDDLE POWDER 7760 7.6 9.2 83 9.4 9.7 97 POWDER RIVER PASS 9480 11.4 8.9 128 13.3 10.1 132 SOLDIER PARK 8720 5.5 -M * 6.9 -M * SUCKER CREEK 8880 10.2 9.4 109 11.3 10.7 106 TIE CREEK 6870 5.6 5.1 110 8.1 8.0 101 ----- ----- Basin wide percent of average 107 106 BELLE FOURCHE BLIND PARK 6890 8.7 7.3 119 14.4 9.4 153 COLE CANYON 5910 7.1 5.8 122 10.4 5.6 186 NORTH RAPID CREEK 6130 8.0 6.9 116 12.4 7.6 163 ----- ----- Basin wide percent of average 119 165 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.8 16.1 129 22.0 17.3 127 COLUMBINE 9160 28.2 22.2 127 29.2 21.2 138 DIVIDE PEAK 8880 18.6 15.9 117 22.7 17.3 131 ELK RIVER 8700 21.0 16.3 129 22.5 16.3 138 JOE WRIGHT 10120 23.9 17.5 137 29.3 20.5 143 NORTH FRENCH CREEK 10130 36.0 23.0 157 32.2 20.5 157 OLD BATTLE 10000 34.7 26.7 130 28.2 28.9 98 SAGE CREEK BASIN 7850 17.3 9.2 188 15.7 10.0 157 SOUTH BRUSH CREEK 8440 15.2 10.2 149 18.3 13.5 136 TOWER 10500 45.4 38.1 119 45.3 32.4 140 WEBBER SPRINGS 9250 25.4 21.8 117 30.2 22.4 135 WILLOW CREEK PASS 9540 15.5 9.8 158 14.6 10.5 139 ----- ----- Basin wide percent of average 133 134 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.1 19.3 130 25.8 17.8 145 CASPER MTN. 7900 9.3 11.5 81 11.9 11.3 105 DEADMAN HILL 10220 18.1 13.2 137 18.8 13.5 139 DEER PARK 9700 16.2 14.4 113 18.7 18.2 103 LAPRELE CREEK 8375 10.7 9.1 118 11.9 10.2 117 RENO HILL 8400 12.1 10.6 114 14.1 11.7 121 ROACH 9700 17.5 14.1 124 20.9 15.1 138 SAND LAKE 10050 30.3 25.7 118 28.9 19.6 147 SOUTH PASS 9040 15.1 14.3 106 13.2 15.2 87 WINDY PEAK 7900 8.7 6.2 140 11.1 8.6 129 ----- ----- Basin wide percent of average 118 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 9.9 * 10.9 12.5 87 DIVIDE PEAK 8880 18.6 15.9 117 22.7 17.3 131 OLD BATTLE 10000 34.7 26.7 130 28.2 28.9 98 SANDSTONE RS 8150 12.2 12.7 96 -M 15.9 * WHISKEY PARK 8950 -M 24.3 * 33.1 23.7 140 ----- ----- Basin wide percent of average 118 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.6 12.3 102 12.9 11.5 112 BLIND BULL SUM 8650 23.9 23.4 102 17.0 19.3 88 EAST RIM DIVIDE 7930 12.6 11.2 113 10.9 10.4 105 ELKHART PARK G.S. 9400 10.9 11.3 96 10.8 11.1 97 GROS VENTRE SUMMIT 8750 12.6 11.7 108 12.2 10.9 112 GUNSIGHT PASS 9820 14.0 -M * 14.0 -M * KENDALL R.S. 7740 11.0 12.6 87 12.7 12.7 100 LOOMIS PARK 8240 16.5 14.7 112 17.1 15.0 114 NEW FORK LAKE 8340 10.5 9.7 108 9.8 9.8 100 POCKET CREEK 9360 9.8 -M * 12.3 -M * SNIDER BASIN 8060 17.0 12.6 135 16.6 13.9 119 SPRING CREEK DIVIDE 9000 28.6 22.5 127 27.6 22.8 121 TRIPLE PEAK 8500 24.8 21.2 117 26.9 21.0 128 ----- ----- Basin wide percent of average 111 110 LOWER GREEN RIVER HAMS FORK 7840 14.3 11.2 128 13.4 10.5 128 HEWINTA 9519 10.8 9.3 116 14.1 11.8 119 HICKERSON PARK 9145 6.4 5.9 108 8.1 6.3 129 HOLE-IN-ROCK 9150 6.8 5.8 117 8.5 5.9 144 INDIAN CREEK 9425 26.2 22.7 115 23.7 21.4 111 KELLEY R.S. 8180 17.4 14.2 123 20.5 17.4 118 STEEL CREEK PARK 10200 14.3 12.9 111 16.8 13.1 128 ----- ----- Basin wide percent of average 117 122 UPPER BEAR RIVER BUG LAKE 7950 24.4 17.4 140 24.0 16.4 146 HAYDEN FORK 9212 19.7 13.4 147 25.3 17.3 146 KELLEY R.S. 8180 17.4 14.2 123 20.5 17.4 118 LILY LAKE 9156 16.8 11.0 153 18.5 14.5 128 MONTE CRISTO 8960 29.5 25.1 118 29.7 21.5 138 SALT RIVER SUMMIT 7760 14.3 12.3 116 18.4 16.0 115 TRIAL LAKE 9992 30.2 21.0 144 29.8 20.9 143 ----- ----- Basin wide percent of average 133 134 ----------------------------------------------------------------------------- -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.