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 SATURDAY: MARCH 5 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.8 16.4 102 19.9 19.0 105 COTTONWOOD CREEK 7670 22.1 19.3 115 29.5 23.6 125 GRAND TARGHEE 9260 39.5 -M * 26.3 -M * GRANITE CREEK 6770 17.5 16.6 105 19.1 17.9 107 GRASSY LAKE 7265 30.9 30.5 101 33.2 31.8 104 GROS VENTRE SUMMIT 8750 12.7 11.9 107 12.3 11.1 111 GUNSIGHT PASS 9820 14.3 -M * 14.2 -M * LEWIS LAKE DIVIDE 7850 29.7 30.6 97 29.1 32.4 90 PHILLIPS BENCH 8200 25.3 24.7 102 26.2 25.3 104 SALT RIVER SUMMIT 7760 14.5 12.5 116 18.6 16.2 115 SNAKE RIVER STATION 6920 -M 17.1 * 21.5 19.9 108 SPRING CREEK DIVIDE 9000 29.1 22.8 128 28.0 23.0 122 THUMB DIVIDE 7980 17.1 16.0 107 16.8 16.5 102 TOGWOTEE PASS 9580 23.8 21.3 112 25.3 21.2 119 TWO OCEAN PLATEAU 9240 -M 24.0 * -M 24.1 * WILLOW CREEK 8380 28.4 26.1 109 33.2 27.8 119 ----- ----- Basin wide percent of average 108 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 21.2 20.4 104 20.3 17.5 116 BLACK BEAR 8170 36.3 34.3 106 35.0 34.3 102 CANYON 7870 13.8 11.8 117 15.0 13.3 113 FISHER CREEK 9100 33.5 30.5 110 32.4 31.5 103 MADISON PLATEAU 7750 22.7 21.8 104 24.7 22.8 108 NORTHEAST ENTRANCE 7350 11.5 10.0 115 12.9 11.1 116 PARKER PEAK 9400 24.1 18.8 128 -M 14.1 * SYLVAN LAKE 8420 19.9 19.3 103 23.2 18.3 127 THUMB DIVIDE 7980 17.1 16.0 107 16.8 16.5 102 TWO OCEAN PLATEAU 9240 -M 24.0 * -M 24.1 * WHISKEY CREEK 6800 16.5 15.0 110 19.0 17.9 106 WHITE MILL 8700 22.8 21.0 109 23.2 23.3 100 WOLVERINE 7650 12.7 10.9 117 12.4 11.4 109 ----- ----- Basin wide percent of average 110 108 WIND RIVER BURROUGHS CREEK 8750 12.5 13.0 96 13.0 14.1 92 CASTLE CREEK 8400 5.5 -M * 6.0 -M * COLD SPRINGS 9630 7.0 7.5 93 6.7 8.6 78 DEER PARK 9700 16.4 14.5 113 19.0 18.4 103 HOBBS PARK 10100 12.3 12.3 100 10.8 10.2 106 LITTLE WARM 9370 10.0 9.9 101 10.1 11.2 90 SOUTH PASS 9040 15.2 14.6 104 13.3 15.4 86 ST. LAWRENCE ALT 8620 3.9 6.2 63 5.7 7.2 79 TOGWOTEE PASS 9580 23.8 21.3 112 25.3 21.2 119 TOWNSEND CREEK 8700 7.4 7.2 103 9.5 9.2 103 ----- ----- Basin wide percent of average 102 98 BIGHORN BASIN BALD MTN. 9380 19.6 16.5 119 16.0 14.5 110 BEAR TRAP MEADOW 8200 6.6 4.5 147 6.7 6.6 102 BLACKWATER 9780 20.9 21.0 100 20.6 17.7 116 BONE SPRINGS DIV 9350 16.0 13.6 118 13.1 12.0 109 EVENING STAR 9200 26.3 25.8 102 29.0 22.3 130 GRAVE SPRINGS 8550 7.2 7.6 95 7.3 8.0 91 KIRWIN 9550 9.1 9.5 96 10.1 9.4 107 MARQUETTE 8760 1.8 7.1 25 5.1 7.7 66 MIDDLE POWDER 7760 8.0 9.3 86 9.7 9.9 98 OWL CREEK 8975 4.5 4.3 105 4.4 4.5 98 POWDER RIVER PASS 9480 11.7 9.0 130 13.6 10.3 132 SHELL CREEK 9580 13.8 12.2 113 12.5 11.1 113 SYLVAN LAKE 8420 19.9 19.3 103 23.2 18.3 127 SYLVAN ROAD 7120 13.5 11.8 114 17.4 15.9 109 TIMBER CREEK 7950 3.1 4.3 72 3.8 5.6 68 YOUNTS PEAK 8350 14.2 15.1 94 12.2 14.0 87 ----- ----- Basin wide percent of average 103 109 SHOSHONE RIVER BLACKWATER 9780 20.9 21.0 100 20.6 17.7 116 EVENING STAR 9200 26.3 25.8 102 29.0 22.3 130 KIRWIN 9550 9.1 9.5 96 10.1 9.4 107 MARQUETTE 8760 1.8 7.1 25 5.1 7.7 66 SYLVAN LAKE 8420 19.9 19.3 103 23.2 18.3 127 SYLVAN ROAD 7120 13.5 11.8 114 17.4 15.9 109 YOUNTS PEAK 8350 14.2 15.1 94 12.2 14.0 87 ----- ----- Basin wide percent of average 96 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.6 4.5 147 6.7 6.6 102 BIG GOOSE 7990 6.3 8.0 79 8.0 6.9 116 BONE SPRINGS DIV 9350 16.0 13.6 118 13.1 12.0 109 BURGESS JUNCTION 7880 9.1 9.3 98 9.9 9.8 101 CLOUD PEAK RESERVOIR 9860 13.2 10.4 127 11.8 10.1 117 DOME LAKE 8880 10.2 9.8 104 10.5 10.5 100 GRAVE SPRINGS 8550 7.2 7.6 95 7.3 8.0 91 HANSEN SAWMILL 8360 5.5 5.4 102 6.2 6.5 95 LITTLE GOOSE 8870 7.2 -M * 11.4 -M * MIDDLE POWDER 7760 8.0 9.3 86 9.7 9.9 98 POWDER RIVER PASS 9480 11.7 9.0 130 13.6 10.3 132 SOLDIER PARK 8720 5.6 -M * 7.1 -M * SUCKER CREEK 8880 10.6 9.5 112 11.8 10.8 109 TIE CREEK 6870 5.8 5.2 112 8.3 8.1 102 ----- ----- Basin wide percent of average 108 107 BELLE FOURCHE BLIND PARK 6890 8.9 7.5 119 14.6 9.5 154 COLE CANYON 5910 7.4 5.9 125 10.6 5.6 189 NORTH RAPID CREEK 6130 8.3 7.0 119 12.5 7.6 164 ----- ----- Basin wide percent of average 121 166 UPPER N. PLATTE RIVER CINNABAR PARK 9574 20.9 16.2 129 21.8 17.5 125 COLUMBINE 9160 28.5 22.5 127 29.3 21.5 136 DIVIDE PEAK 8880 18.9 16.2 117 23.0 17.6 131 ELK RIVER 8700 21.3 16.6 128 22.6 16.6 136 JOE WRIGHT 10120 24.0 17.7 136 29.7 20.8 143 NORTH FRENCH CREEK 10130 36.9 23.4 158 32.2 20.8 155 OLD BATTLE 10000 35.0 27.1 129 28.1 29.3 96 SAGE CREEK BASIN 7850 17.5 9.4 186 15.8 10.2 155 SOUTH BRUSH CREEK 8440 15.6 10.5 149 18.7 13.7 136 TOWER 10500 46.1 38.6 119 45.4 32.9 138 WEBBER SPRINGS 9250 25.7 22.2 116 30.8 22.7 136 WILLOW CREEK PASS 9540 15.9 9.9 161 14.9 10.7 139 ----- ----- Basin wide percent of average 133 133 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.4 19.5 130 25.9 18.0 144 CASPER MTN. 7900 9.8 11.6 84 12.5 11.4 110 DEADMAN HILL 10220 18.1 13.3 136 18.9 13.7 138 DEER PARK 9700 16.4 14.5 113 19.0 18.4 103 LAPRELE CREEK 8375 10.9 9.2 118 12.1 10.4 116 RENO HILL 8400 12.5 10.8 116 14.4 11.9 121 ROACH 9700 17.6 14.3 123 21.1 15.4 137 SAND LAKE 10050 30.8 26.1 118 29.4 19.9 148 SOUTH PASS 9040 15.2 14.6 104 13.3 15.4 86 WINDY PEAK 7900 8.9 6.3 141 11.2 8.7 129 ----- ----- Basin wide percent of average 118 124 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.1 * 10.9 12.7 86 DIVIDE PEAK 8880 18.9 16.2 117 23.0 17.6 131 OLD BATTLE 10000 35.0 27.1 129 28.1 29.3 96 SANDSTONE RS 8150 12.6 13.0 97 -M 16.1 * WHISKEY PARK 8950 -M 24.8 * 33.4 24.1 139 ----- ----- Basin wide percent of average 118 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.6 12.5 101 12.9 11.7 110 BLIND BULL SUM 8650 24.5 23.8 103 17.3 19.5 89 EAST RIM DIVIDE 7930 12.9 11.4 113 11.2 10.5 107 ELKHART PARK G.S. 9400 11.2 11.5 97 11.2 11.3 99 GROS VENTRE SUMMIT 8750 12.7 11.9 107 12.3 11.1 111 GUNSIGHT PASS 9820 14.3 -M * 14.2 -M * KENDALL R.S. 7740 11.3 12.8 88 12.9 12.9 100 LOOMIS PARK 8240 16.8 15.0 112 17.5 15.2 115 NEW FORK LAKE 8340 10.8 9.9 109 10.1 9.9 102 POCKET CREEK 9360 9.9 -M * 12.5 -M * SNIDER BASIN 8060 17.3 12.8 135 16.8 14.1 119 SPRING CREEK DIVIDE 9000 29.1 22.8 128 28.0 23.0 122 TRIPLE PEAK 8500 25.4 21.5 118 27.5 21.3 129 ----- ----- Basin wide percent of average 111 111 LOWER GREEN RIVER HAMS FORK 7840 14.3 11.4 125 13.4 10.7 125 HEWINTA 9519 10.8 9.5 114 14.2 12.0 118 HICKERSON PARK 9145 6.4 6.0 107 8.0 6.4 125 HOLE-IN-ROCK 9150 6.9 5.9 117 8.6 6.0 143 INDIAN CREEK 9425 26.4 23.1 114 23.8 21.7 110 KELLEY R.S. 8180 17.6 14.5 121 20.6 17.6 117 STEEL CREEK PARK 10200 14.4 13.1 110 17.0 13.3 128 ----- ----- Basin wide percent of average 116 120 UPPER BEAR RIVER BUG LAKE 7950 25.2 17.7 142 24.4 16.6 147 HAYDEN FORK 9212 20.1 13.6 148 25.6 17.6 145 KELLEY R.S. 8180 17.6 14.5 121 20.6 17.6 117 LILY LAKE 9156 17.1 11.1 154 18.8 14.7 128 MONTE CRISTO 8960 31.4 25.6 123 31.5 21.8 144 SALT RIVER SUMMIT 7760 14.5 12.5 116 18.6 16.2 115 TRIAL LAKE 9992 30.5 21.3 143 29.9 21.2 141 ----- ----- Basin wide percent of average 134 135 ----------------------------------------------------------------------------- -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.