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 14 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.1 17.3 105 21.2 20.0 106 COTTONWOOD CREEK 7670 24.0 21.2 113 31.7 25.0 127 GRAND TARGHEE 9260 41.9 -M * -M -M * GRANITE CREEK 6770 19.3 17.8 108 20.6 18.7 110 GRASSY LAKE 7265 34.2 32.6 105 36.2 33.4 108 GROS VENTRE SUMMIT 8750 13.5 12.8 105 13.0 11.7 111 GUNSIGHT PASS 9820 15.3 -M * 15.2 -M * LEWIS LAKE DIVIDE 7850 33.7 32.6 103 -M 34.1 * PHILLIPS BENCH 8200 27.2 26.3 103 27.9 26.7 104 SALT RIVER SUMMIT 7760 15.6 13.3 117 19.7 17.1 115 SNAKE RIVER STATION 6920 -M 18.2 * 23.4 20.8 113 SPRING CREEK DIVIDE 9000 30.7 24.3 126 29.4 24.2 121 THUMB DIVIDE 7980 18.4 17.3 106 17.8 17.4 102 TOGWOTEE PASS 9580 25.7 22.6 114 27.3 22.4 122 TWO OCEAN PLATEAU 9240 -M 25.4 * -M 25.4 * WILLOW CREEK 8380 31.6 27.8 114 35.7 29.4 121 ----- ----- Basin wide percent of average 110 114 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.4 21.8 103 21.5 18.5 116 BLACK BEAR 8170 39.0 36.3 107 37.4 36.7 102 CANYON 7870 14.9 12.6 118 16.0 14.1 113 FISHER CREEK 9100 35.5 32.2 110 34.3 33.3 103 MADISON PLATEAU 7750 24.4 23.1 106 26.4 24.1 110 NORTHEAST ENTRANCE 7350 12.2 10.6 115 13.6 11.6 117 PARKER PEAK 9400 25.4 19.8 128 22.2 14.8 150 SYLVAN LAKE 8420 21.0 20.5 102 24.4 19.3 126 THUMB DIVIDE 7980 18.4 17.3 106 17.8 17.4 102 TWO OCEAN PLATEAU 9240 -M 25.4 * -M 25.4 * WHISKEY CREEK 6800 17.7 15.9 111 20.1 19.1 105 WHITE MILL 8700 24.5 22.2 110 25.0 24.7 101 WOLVERINE 7650 13.2 11.3 117 13.2 11.9 111 ----- ----- Basin wide percent of average 110 111 WIND RIVER BURROUGHS CREEK 8750 13.7 13.5 101 14.3 14.8 97 CASTLE CREEK 8400 6.1 -M * 7.1 -M * COLD SPRINGS 9630 7.7 8.0 96 7.5 9.2 82 DEER PARK 9700 16.8 15.3 110 19.7 19.7 100 HOBBS PARK 10100 12.9 13.1 98 11.4 10.9 105 LITTLE WARM 9370 11.0 10.5 105 11.1 11.9 93 SOUTH PASS 9040 15.8 15.3 103 13.9 16.4 85 ST. LAWRENCE ALT 8620 4.3 6.6 65 6.1 7.6 80 TOGWOTEE PASS 9580 25.7 22.6 114 27.3 22.4 122 TOWNSEND CREEK 8700 7.8 7.6 103 9.8 9.8 100 ----- ----- Basin wide percent of average 103 99 BIGHORN BASIN BALD MTN. 9380 20.0 17.5 114 16.6 15.4 108 BEAR TRAP MEADOW 8200 7.0 4.9 143 7.2 7.0 103 BLACKWATER 9780 22.9 22.3 103 22.5 18.6 121 BONE SPRINGS DIV 9350 16.7 14.3 117 13.9 12.8 109 EVENING STAR 9200 28.1 27.2 103 30.9 23.3 133 GRAVE SPRINGS 8550 7.4 8.2 90 7.6 8.6 88 KIRWIN 9550 10.1 10.0 101 11.2 10.0 112 MARQUETTE 8760 2.5 -M * 5.6 8.2 68 MIDDLE POWDER 7760 8.4 10.1 83 10.2 10.6 96 OWL CREEK 8975 5.1 4.6 111 5.1 4.9 104 POWDER RIVER PASS 9480 12.2 9.7 126 14.2 10.9 130 SHELL CREEK 9580 14.5 12.9 112 13.1 11.7 112 SYLVAN LAKE 8420 21.0 20.5 102 24.4 19.3 126 SYLVAN ROAD 7120 14.0 12.1 116 18.1 16.5 110 TIMBER CREEK 7950 3.4 4.8 71 4.2 6.1 69 YOUNTS PEAK 8350 15.6 15.6 100 13.6 14.7 93 ----- ----- Basin wide percent of average 106 110 SHOSHONE RIVER BLACKWATER 9780 22.9 22.3 103 22.5 18.6 121 EVENING STAR 9200 28.1 27.2 103 30.9 23.3 133 KIRWIN 9550 10.1 10.0 101 11.2 10.0 112 MARQUETTE 8760 2.5 -M * 5.6 8.2 68 SYLVAN LAKE 8420 21.0 20.5 102 24.4 19.3 126 SYLVAN ROAD 7120 14.0 12.1 116 18.1 16.5 110 YOUNTS PEAK 8350 15.6 15.6 100 13.6 14.7 93 ----- ----- Basin wide percent of average 104 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.9 143 7.2 7.0 103 BIG GOOSE 7990 6.8 8.6 79 8.6 7.3 118 BONE SPRINGS DIV 9350 16.7 14.3 117 13.9 12.8 109 BURGESS JUNCTION 7880 9.4 9.9 95 10.3 10.5 98 CLOUD PEAK RESERVOIR 9860 13.7 11.3 121 12.5 10.9 115 DOME LAKE 8880 11.1 10.5 106 11.2 11.2 100 GRAVE SPRINGS 8550 7.4 8.2 90 7.6 8.6 88 HANSEN SAWMILL 8360 6.1 5.8 105 6.8 7.0 97 LITTLE GOOSE 8870 7.6 -M * 11.9 -M * MIDDLE POWDER 7760 8.4 10.1 83 10.2 10.6 96 POWDER RIVER PASS 9480 12.2 9.7 126 14.2 10.9 130 SOLDIER PARK 8720 6.4 -M * 7.7 -M * SUCKER CREEK 8880 11.1 10.1 110 12.3 11.6 106 TIE CREEK 6870 5.9 5.8 102 8.6 8.6 100 ----- ----- Basin wide percent of average 106 105 BELLE FOURCHE BLIND PARK 6890 9.5 8.3 114 15.2 10.0 152 COLE CANYON 5910 7.5 6.2 121 10.8 6.0 180 NORTH RAPID CREEK 6130 8.6 7.4 116 13.0 7.9 165 ----- ----- Basin wide percent of average 117 163 UPPER N. PLATTE RIVER CINNABAR PARK 9574 22.3 17.0 131 22.2 18.4 121 COLUMBINE 9160 31.0 23.7 131 31.5 22.8 138 DIVIDE PEAK 8880 20.6 17.5 118 24.5 18.7 131 ELK RIVER 8700 23.0 17.6 131 24.1 17.6 137 JOE WRIGHT 10120 26.3 18.9 139 31.2 22.1 141 NORTH FRENCH CREEK 10130 39.8 25.3 157 32.2 22.1 146 OLD BATTLE 10000 38.0 29.0 131 28.9 31.3 92 SAGE CREEK BASIN 7850 18.8 10.2 184 16.7 10.8 155 SOUTH BRUSH CREEK 8440 17.2 11.5 150 20.0 14.5 138 TOWER 10500 49.6 40.9 121 46.0 34.8 132 WEBBER SPRINGS 9250 27.7 24.1 115 32.7 24.0 136 WILLOW CREEK PASS 9540 16.8 10.6 158 15.6 11.4 137 ----- ----- Basin wide percent of average 134 131 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 28.1 20.9 134 28.3 19.3 147 CASPER MTN. 7900 10.1 12.4 81 12.7 12.3 103 DEADMAN HILL 10220 19.0 14.3 133 19.7 14.8 133 DEER PARK 9700 16.8 15.3 110 19.7 19.7 100 LAPRELE CREEK 8375 11.6 9.9 117 12.8 11.1 115 RENO HILL 8400 13.0 11.9 109 15.1 12.8 118 ROACH 9700 18.4 15.2 121 21.8 16.5 132 SAND LAKE 10050 33.3 28.4 117 31.7 21.2 150 SOUTH PASS 9040 15.8 15.3 103 13.9 16.4 85 WINDY PEAK 7900 9.8 7.1 138 12.1 9.3 130 ----- ----- Basin wide percent of average 117 122 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.1 * -M 13.8 * DIVIDE PEAK 8880 20.6 17.5 118 24.5 18.7 131 OLD BATTLE 10000 38.0 29.0 131 28.9 31.3 92 SANDSTONE RS 8150 14.4 14.1 102 23.1 17.1 135 WHISKEY PARK 8950 -M 27.0 * 35.9 25.7 140 ----- ----- Basin wide percent of average 120 121 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.2 13.2 100 13.4 12.3 109 BLIND BULL SUM 8650 26.9 25.5 105 19.5 20.5 95 EAST RIM DIVIDE 7930 13.9 12.1 115 12.0 11.1 108 ELKHART PARK G.S. 9400 12.0 12.2 98 11.9 12.0 99 GROS VENTRE SUMMIT 8750 13.5 12.8 105 13.0 11.7 111 GUNSIGHT PASS 9820 15.3 -M * 15.2 -M * KENDALL R.S. 7740 12.5 13.8 91 13.9 13.6 102 LOOMIS PARK 8240 18.5 16.1 115 18.8 16.0 118 NEW FORK LAKE 8340 11.7 10.4 113 10.8 10.4 104 POCKET CREEK 9360 10.4 -M * 12.9 -M * SNIDER BASIN 8060 18.6 13.5 138 17.8 14.8 120 SPRING CREEK DIVIDE 9000 30.7 24.3 126 29.4 24.2 121 TRIPLE PEAK 8500 27.4 22.9 120 29.4 22.6 130 ----- ----- Basin wide percent of average 113 112 LOWER GREEN RIVER HAMS FORK 7840 15.6 12.2 128 14.3 11.2 128 HEWINTA 9519 12.2 10.3 118 15.5 12.8 121 HICKERSON PARK 9145 7.7 6.4 120 9.3 6.9 135 HOLE-IN-ROCK 9150 7.9 6.3 125 9.7 6.4 152 INDIAN CREEK 9425 28.1 24.9 113 25.2 22.9 110 KELLEY R.S. 8180 18.9 15.5 122 21.9 18.5 118 STEEL CREEK PARK 10200 15.7 14.1 111 18.2 14.2 128 ----- ----- Basin wide percent of average 118 123 UPPER BEAR RIVER BUG LAKE 7950 26.4 19.0 139 26.3 17.5 150 HAYDEN FORK 9212 20.9 14.7 142 26.5 18.7 142 KELLEY R.S. 8180 18.9 15.5 122 21.9 18.5 118 LILY LAKE 9156 19.1 11.8 162 20.0 15.6 128 MONTE CRISTO 8960 33.3 27.4 122 33.1 23.1 143 SALT RIVER SUMMIT 7760 15.6 13.3 117 19.7 17.1 115 TRIAL LAKE 9992 32.0 22.8 140 31.0 22.6 137 ----- ----- 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.