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 12 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.2 17.1 106 21.2 19.8 107 COTTONWOOD CREEK 7670 23.9 20.8 115 31.7 24.7 128 GRAND TARGHEE 9260 41.7 -M * -M -M * GRANITE CREEK 6770 19.3 17.5 110 20.6 18.5 111 GRASSY LAKE 7265 34.1 32.1 106 36.1 33.0 109 GROS VENTRE SUMMIT 8750 13.5 12.6 107 13.0 11.6 112 GUNSIGHT PASS 9820 15.3 -M * 15.1 -M * LEWIS LAKE DIVIDE 7850 33.6 32.1 105 -M 33.7 * PHILLIPS BENCH 8200 27.2 26.0 105 27.8 26.4 105 SALT RIVER SUMMIT 7760 15.6 13.1 119 19.6 16.9 116 SNAKE RIVER STATION 6920 -M 17.9 * 23.3 20.6 113 SPRING CREEK DIVIDE 9000 30.6 23.9 128 29.4 24.0 123 THUMB DIVIDE 7980 18.4 17.0 108 17.8 17.2 103 TOGWOTEE PASS 9580 25.7 22.3 115 27.2 22.1 123 TWO OCEAN PLATEAU 9240 -M 25.1 * -M 25.1 * WILLOW CREEK 8380 31.5 27.4 115 35.7 29.0 123 ----- ----- Basin wide percent of average 111 115 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.3 21.5 104 21.3 18.3 116 BLACK BEAR 8170 38.9 35.9 108 37.3 36.1 103 CANYON 7870 14.9 12.4 120 15.9 13.9 114 FISHER CREEK 9100 35.5 31.9 111 34.3 32.9 104 MADISON PLATEAU 7750 24.3 22.8 107 26.3 23.8 111 NORTHEAST ENTRANCE 7350 12.2 10.5 116 13.5 11.5 117 PARKER PEAK 9400 25.3 19.6 129 -M 14.7 * SYLVAN LAKE 8420 21.0 20.3 103 24.3 19.1 127 THUMB DIVIDE 7980 18.4 17.0 108 17.8 17.2 103 TWO OCEAN PLATEAU 9240 -M 25.1 * -M 25.1 * WHISKEY CREEK 6800 17.7 15.7 113 20.1 18.8 107 WHITE MILL 8700 24.4 22.0 111 24.9 24.4 102 WOLVERINE 7650 13.2 11.3 117 13.1 11.8 111 ----- ----- Basin wide percent of average 111 109 WIND RIVER BURROUGHS CREEK 8750 13.7 13.5 101 14.3 14.7 97 CASTLE CREEK 8400 6.2 -M * 7.0 -M * COLD SPRINGS 9630 7.7 7.9 97 7.3 9.0 81 DEER PARK 9700 16.7 15.4 108 19.6 19.4 101 HOBBS PARK 10100 12.9 13.0 99 11.2 10.7 105 LITTLE WARM 9370 10.9 10.4 105 11.0 11.7 94 SOUTH PASS 9040 15.8 15.3 103 13.8 16.1 86 ST. LAWRENCE ALT 8620 4.4 6.5 68 6.1 7.5 81 TOGWOTEE PASS 9580 25.7 22.3 115 27.2 22.1 123 TOWNSEND CREEK 8700 7.7 7.6 101 9.9 9.7 102 ----- ----- Basin wide percent of average 103 100 BIGHORN BASIN BALD MTN. 9380 20.0 17.3 116 16.5 15.2 109 BEAR TRAP MEADOW 8200 7.0 4.9 143 7.1 6.9 103 BLACKWATER 9780 22.9 22.1 104 22.3 18.4 121 BONE SPRINGS DIV 9350 16.7 14.2 118 13.8 12.6 110 EVENING STAR 9200 27.9 26.9 104 30.5 23.1 132 GRAVE SPRINGS 8550 7.4 8.0 93 7.5 8.5 88 KIRWIN 9550 10.1 10.0 101 11.1 9.9 112 MARQUETTE 8760 2.4 -M * 5.4 8.1 67 MIDDLE POWDER 7760 8.4 9.9 85 10.1 10.5 96 OWL CREEK 8975 5.1 4.6 111 5.1 4.8 106 POWDER RIVER PASS 9480 12.2 9.5 128 14.1 10.8 131 SHELL CREEK 9580 14.5 12.7 114 13.1 11.6 113 SYLVAN LAKE 8420 21.0 20.3 103 24.3 19.1 127 SYLVAN ROAD 7120 14.1 12.0 118 18.1 16.3 111 TIMBER CREEK 7950 3.4 4.7 72 4.2 6.0 70 YOUNTS PEAK 8350 15.6 15.6 100 13.5 14.5 93 ----- ----- Basin wide percent of average 107 110 SHOSHONE RIVER BLACKWATER 9780 22.9 22.1 104 22.3 18.4 121 EVENING STAR 9200 27.9 26.9 104 30.5 23.1 132 KIRWIN 9550 10.1 10.0 101 11.1 9.9 112 MARQUETTE 8760 2.4 -M * 5.4 8.1 67 SYLVAN LAKE 8420 21.0 20.3 103 24.3 19.1 127 SYLVAN ROAD 7120 14.1 12.0 118 18.1 16.3 111 YOUNTS PEAK 8350 15.6 15.6 100 13.5 14.5 93 ----- ----- Basin wide percent of average 104 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.9 143 7.1 6.9 103 BIG GOOSE 7990 6.8 8.5 80 8.4 7.2 117 BONE SPRINGS DIV 9350 16.7 14.2 118 13.8 12.6 110 BURGESS JUNCTION 7880 9.4 9.8 96 10.2 10.3 99 CLOUD PEAK RESERVOIR 9860 13.6 11.2 121 12.2 10.7 114 DOME LAKE 8880 11.0 10.4 106 11.1 11.1 100 GRAVE SPRINGS 8550 7.4 8.0 93 7.5 8.5 88 HANSEN SAWMILL 8360 6.0 5.6 107 6.6 6.9 96 LITTLE GOOSE 8870 7.6 -M * 11.8 -M * MIDDLE POWDER 7760 8.4 9.9 85 10.1 10.5 96 POWDER RIVER PASS 9480 12.2 9.5 128 14.1 10.8 131 SOLDIER PARK 8720 6.2 -M * 7.6 -M * SUCKER CREEK 8880 11.1 10.0 111 12.2 11.4 107 TIE CREEK 6870 6.0 5.7 105 8.6 8.5 101 ----- ----- Basin wide percent of average 107 106 BELLE FOURCHE BLIND PARK 6890 9.5 8.1 117 15.2 9.9 154 COLE CANYON 5910 7.4 6.1 121 10.8 5.9 183 NORTH RAPID CREEK 6130 8.6 7.3 118 12.9 7.9 163 ----- ----- Basin wide percent of average 119 164 UPPER N. PLATTE RIVER CINNABAR PARK 9574 22.0 16.8 131 22.2 18.2 122 COLUMBINE 9160 31.1 23.4 133 31.1 22.5 138 DIVIDE PEAK 8880 20.1 17.2 117 24.1 18.4 131 ELK RIVER 8700 22.5 17.4 129 23.7 17.4 136 JOE WRIGHT 10120 25.4 18.6 137 30.2 21.8 139 NORTH FRENCH CREEK 10130 39.1 24.9 157 32.2 21.8 148 OLD BATTLE 10000 37.5 28.6 131 28.9 30.8 94 SAGE CREEK BASIN 7850 18.6 10.0 186 16.6 10.7 155 SOUTH BRUSH CREEK 8440 16.6 11.3 147 19.5 14.3 136 TOWER 10500 48.9 40.4 121 45.9 34.4 133 WEBBER SPRINGS 9250 27.4 23.7 116 32.3 23.7 136 WILLOW CREEK PASS 9540 16.3 10.4 157 15.3 11.2 137 ----- ----- Basin wide percent of average 134 131 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 27.8 20.6 135 27.8 19.0 146 CASPER MTN. 7900 10.2 12.2 84 12.8 12.1 106 DEADMAN HILL 10220 18.7 14.0 134 19.2 14.5 132 DEER PARK 9700 16.7 15.4 108 19.6 19.4 101 LAPRELE CREEK 8375 11.6 9.8 118 12.9 10.9 118 RENO HILL 8400 13.0 11.6 112 15.1 12.5 121 ROACH 9700 18.1 15.0 121 21.5 16.3 132 SAND LAKE 10050 32.8 27.9 118 31.3 20.9 150 SOUTH PASS 9040 15.8 15.3 103 13.8 16.1 86 WINDY PEAK 7900 9.8 6.9 142 12.1 9.1 133 ----- ----- Basin wide percent of average 117 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 10.9 * -M 13.6 * DIVIDE PEAK 8880 20.1 17.2 117 24.1 18.4 131 OLD BATTLE 10000 37.5 28.6 131 28.9 30.8 94 SANDSTONE RS 8150 14.0 13.9 101 22.8 16.9 135 WHISKEY PARK 8950 -M 26.5 * 35.6 25.3 141 ----- ----- Basin wide percent of average 120 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.3 13.1 102 13.4 12.1 111 BLIND BULL SUM 8650 26.8 25.2 106 19.4 20.2 96 EAST RIM DIVIDE 7930 13.9 11.9 117 12.0 11.0 109 ELKHART PARK G.S. 9400 11.9 12.1 98 11.9 11.8 101 GROS VENTRE SUMMIT 8750 13.5 12.6 107 13.0 11.6 112 GUNSIGHT PASS 9820 15.3 -M * 15.1 -M * KENDALL R.S. 7740 12.5 13.6 92 13.9 13.4 104 LOOMIS PARK 8240 18.5 15.9 116 18.8 15.9 118 NEW FORK LAKE 8340 11.7 10.3 114 10.8 10.3 105 POCKET CREEK 9360 10.5 -M * 12.9 -M * SNIDER BASIN 8060 18.7 13.4 140 17.8 14.6 122 SPRING CREEK DIVIDE 9000 30.6 23.9 128 29.4 24.0 123 TRIPLE PEAK 8500 27.3 22.6 121 29.4 22.3 132 ----- ----- Basin wide percent of average 114 114 LOWER GREEN RIVER HAMS FORK 7840 15.6 12.0 130 14.3 11.1 129 HEWINTA 9519 11.3 10.1 112 14.6 12.6 116 HICKERSON PARK 9145 7.2 6.3 114 8.5 6.8 125 HOLE-IN-ROCK 9150 7.3 6.2 118 8.9 6.3 141 INDIAN CREEK 9425 28.1 24.5 115 25.1 22.7 111 KELLEY R.S. 8180 18.9 15.3 124 21.9 18.3 120 STEEL CREEK PARK 10200 14.9 13.8 108 17.4 14.0 124 ----- ----- Basin wide percent of average 117 121 UPPER BEAR RIVER BUG LAKE 7950 26.4 18.7 141 26.3 17.3 152 HAYDEN FORK 9212 20.5 14.5 141 26.1 18.5 141 KELLEY R.S. 8180 18.9 15.3 124 21.9 18.3 120 LILY LAKE 9156 18.0 11.7 154 19.2 15.3 125 MONTE CRISTO 8960 33.0 27.0 122 33.0 22.8 145 SALT RIVER SUMMIT 7760 15.6 13.1 119 19.6 16.9 116 TRIAL LAKE 9992 31.6 22.5 140 30.6 22.3 137 ----- ----- Basin wide percent of average 134 134 ----------------------------------------------------------------------------- -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.