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 SUNDAY: MARCH 13 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.3 17.2 106 21.2 19.9 107 COTTONWOOD CREEK 7670 23.9 21.0 114 31.7 24.8 128 GRAND TARGHEE 9260 41.7 -M * -M -M * GRANITE CREEK 6770 19.3 17.7 109 20.6 18.6 111 GRASSY LAKE 7265 34.1 32.3 106 36.1 33.2 109 GROS VENTRE SUMMIT 8750 13.5 12.7 106 13.0 11.7 111 GUNSIGHT PASS 9820 15.4 -M * 15.1 -M * LEWIS LAKE DIVIDE 7850 33.5 32.4 103 -M 33.9 * PHILLIPS BENCH 8200 27.2 26.2 104 27.9 26.6 105 SALT RIVER SUMMIT 7760 15.5 13.2 117 19.6 17.0 115 SNAKE RIVER STATION 6920 -M 18.1 * 23.3 20.7 113 SPRING CREEK DIVIDE 9000 30.6 24.1 127 29.4 24.1 122 THUMB DIVIDE 7980 18.5 17.2 108 17.8 17.3 103 TOGWOTEE PASS 9580 25.7 22.5 114 27.2 22.3 122 TWO OCEAN PLATEAU 9240 -M 25.2 * -M 25.3 * WILLOW CREEK 8380 31.6 27.6 114 35.7 29.2 122 ----- ----- Basin wide percent of average 110 114 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 22.2 21.6 103 21.3 18.4 116 BLACK BEAR 8170 38.9 36.0 108 37.3 36.4 102 CANYON 7870 14.9 12.5 119 15.9 14.0 114 FISHER CREEK 9100 35.5 32.0 111 34.3 33.1 104 MADISON PLATEAU 7750 24.3 22.9 106 26.4 24.0 110 NORTHEAST ENTRANCE 7350 12.2 10.5 116 13.5 11.6 116 PARKER PEAK 9400 25.3 19.7 128 -M 14.7 * SYLVAN LAKE 8420 20.9 20.4 102 24.3 19.2 127 THUMB DIVIDE 7980 18.5 17.2 108 17.8 17.3 103 TWO OCEAN PLATEAU 9240 -M 25.2 * -M 25.3 * WHISKEY CREEK 6800 17.7 15.8 112 20.2 18.9 107 WHITE MILL 8700 24.4 22.1 110 24.9 24.5 102 WOLVERINE 7650 13.2 11.3 117 13.1 11.9 110 ----- ----- Basin wide percent of average 111 109 WIND RIVER BURROUGHS CREEK 8750 13.7 13.5 101 14.3 14.8 97 CASTLE CREEK 8400 6.4 -M * 6.9 -M * COLD SPRINGS 9630 7.7 8.0 96 7.4 9.1 81 DEER PARK 9700 16.7 15.4 108 19.6 19.6 100 HOBBS PARK 10100 12.8 13.0 98 11.2 10.8 104 LITTLE WARM 9370 10.9 10.5 104 11.1 11.8 94 SOUTH PASS 9040 15.8 15.3 103 13.9 16.2 86 ST. LAWRENCE ALT 8620 4.3 6.5 66 6.1 7.6 80 TOGWOTEE PASS 9580 25.7 22.5 114 27.2 22.3 122 TOWNSEND CREEK 8700 7.7 7.6 101 9.8 9.7 101 ----- ----- Basin wide percent of average 103 99 BIGHORN BASIN BALD MTN. 9380 20.0 17.4 115 16.5 15.3 108 BEAR TRAP MEADOW 8200 7.0 4.9 143 7.1 7.0 101 BLACKWATER 9780 22.9 22.2 103 22.4 18.5 121 BONE SPRINGS DIV 9350 16.7 14.2 118 13.8 12.7 109 EVENING STAR 9200 27.9 27.0 103 30.5 23.2 131 GRAVE SPRINGS 8550 7.4 8.2 90 7.5 8.6 87 KIRWIN 9550 10.0 10.0 100 11.1 9.9 112 MARQUETTE 8760 2.4 -M * 5.5 8.2 67 MIDDLE POWDER 7760 8.4 10.0 84 10.1 10.5 96 OWL CREEK 8975 5.2 4.6 113 5.1 4.8 106 POWDER RIVER PASS 9480 12.1 9.6 126 14.2 10.8 131 SHELL CREEK 9580 14.5 12.8 113 13.1 11.7 112 SYLVAN LAKE 8420 20.9 20.4 102 24.3 19.2 127 SYLVAN ROAD 7120 14.1 12.0 118 18.2 16.4 111 TIMBER CREEK 7950 3.4 4.8 71 4.2 6.0 70 YOUNTS PEAK 8350 15.5 15.6 99 13.5 14.6 92 ----- ----- Basin wide percent of average 106 110 SHOSHONE RIVER BLACKWATER 9780 22.9 22.2 103 22.4 18.5 121 EVENING STAR 9200 27.9 27.0 103 30.5 23.2 131 KIRWIN 9550 10.0 10.0 100 11.1 9.9 112 MARQUETTE 8760 2.4 -M * 5.5 8.2 67 SYLVAN LAKE 8420 20.9 20.4 102 24.3 19.2 127 SYLVAN ROAD 7120 14.1 12.0 118 18.2 16.4 111 YOUNTS PEAK 8350 15.5 15.6 99 13.5 14.6 92 ----- ----- Basin wide percent of average 104 114 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.0 4.9 143 7.1 7.0 101 BIG GOOSE 7990 6.8 8.5 80 8.4 7.3 115 BONE SPRINGS DIV 9350 16.7 14.2 118 13.8 12.7 109 BURGESS JUNCTION 7880 9.4 9.9 95 10.2 10.4 98 CLOUD PEAK RESERVOIR 9860 13.6 11.3 120 12.2 10.8 113 DOME LAKE 8880 11.1 10.4 107 11.1 11.1 100 GRAVE SPRINGS 8550 7.4 8.2 90 7.5 8.6 87 HANSEN SAWMILL 8360 6.0 5.7 105 6.6 6.9 96 LITTLE GOOSE 8870 7.6 -M * 11.8 -M * MIDDLE POWDER 7760 8.4 10.0 84 10.1 10.5 96 POWDER RIVER PASS 9480 12.1 9.6 126 14.2 10.8 131 SOLDIER PARK 8720 6.3 -M * 7.6 -M * SUCKER CREEK 8880 11.1 10.1 110 12.2 11.5 106 TIE CREEK 6870 5.9 5.7 104 8.5 8.5 100 ----- ----- 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 5.9 183 NORTH RAPID CREEK 6130 8.6 7.4 116 12.8 7.9 162 ----- ----- Basin wide percent of average 117 163 UPPER N. PLATTE RIVER CINNABAR PARK 9574 22.4 16.9 133 22.2 18.3 121 COLUMBINE 9160 31.2 23.6 132 31.3 22.7 138 DIVIDE PEAK 8880 20.5 17.3 118 24.5 18.5 132 ELK RIVER 8700 22.7 17.5 130 24.1 17.5 138 JOE WRIGHT 10120 25.9 18.8 138 30.6 21.9 140 NORTH FRENCH CREEK 10130 39.8 25.1 159 32.2 22.0 146 OLD BATTLE 10000 37.9 28.8 132 29.0 31.0 94 SAGE CREEK BASIN 7850 18.8 10.0 188 16.7 10.8 155 SOUTH BRUSH CREEK 8440 17.1 11.4 150 20.0 14.4 139 TOWER 10500 49.2 40.7 121 46.0 34.6 133 WEBBER SPRINGS 9250 27.7 23.9 116 32.7 23.9 137 WILLOW CREEK PASS 9540 16.6 10.5 158 15.4 11.3 136 ----- ----- Basin wide percent of average 135 132 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 28.2 20.7 136 28.0 19.2 146 CASPER MTN. 7900 10.3 12.3 84 12.7 12.2 104 DEADMAN HILL 10220 19.0 14.2 134 19.6 14.7 133 DEER PARK 9700 16.7 15.4 108 19.6 19.6 100 LAPRELE CREEK 8375 11.7 9.8 119 12.9 11.0 117 RENO HILL 8400 13.0 11.7 111 15.1 12.6 120 ROACH 9700 18.4 15.1 122 21.8 16.4 133 SAND LAKE 10050 33.3 28.2 118 31.8 21.1 151 SOUTH PASS 9040 15.8 15.3 103 13.9 16.2 86 WINDY PEAK 7900 9.8 7.0 140 12.1 9.2 132 ----- ----- Basin wide percent of average 118 123 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.0 * -M 13.7 * DIVIDE PEAK 8880 20.5 17.3 118 24.5 18.5 132 OLD BATTLE 10000 37.9 28.8 132 29.0 31.0 94 SANDSTONE RS 8150 14.3 14.0 102 23.1 17.0 136 WHISKEY PARK 8950 -M 26.8 * 35.8 25.5 140 ----- ----- Basin wide percent of average 121 122 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.3 13.1 102 13.5 12.2 111 BLIND BULL SUM 8650 26.8 25.3 106 19.4 20.3 96 EAST RIM DIVIDE 7930 13.9 12.0 116 11.9 11.0 108 ELKHART PARK G.S. 9400 11.9 12.1 98 11.9 11.9 100 GROS VENTRE SUMMIT 8750 13.5 12.7 106 13.0 11.7 111 GUNSIGHT PASS 9820 15.4 -M * 15.1 -M * KENDALL R.S. 7740 12.5 13.7 91 13.9 13.5 103 LOOMIS PARK 8240 18.5 16.0 116 18.8 16.0 118 NEW FORK LAKE 8340 11.7 10.4 113 10.7 10.3 104 POCKET CREEK 9360 10.5 -M * 12.9 -M * SNIDER BASIN 8060 18.7 13.5 139 17.7 14.7 120 SPRING CREEK DIVIDE 9000 30.6 24.1 127 29.4 24.1 122 TRIPLE PEAK 8500 27.2 22.7 120 29.4 22.5 131 ----- ----- Basin wide percent of average 113 113 LOWER GREEN RIVER HAMS FORK 7840 15.7 12.1 130 14.3 11.1 129 HEWINTA 9519 12.1 10.2 119 15.5 12.7 122 HICKERSON PARK 9145 7.7 6.4 120 9.2 6.8 135 HOLE-IN-ROCK 9150 7.8 6.3 124 9.6 6.4 150 INDIAN CREEK 9425 27.9 24.7 113 25.1 22.8 110 KELLEY R.S. 8180 18.8 15.4 122 21.9 18.4 119 STEEL CREEK PARK 10200 15.6 14.0 111 18.2 14.1 129 ----- ----- Basin wide percent of average 119 123 UPPER BEAR RIVER BUG LAKE 7950 26.3 18.8 140 26.3 17.4 151 HAYDEN FORK 9212 20.7 14.6 142 26.5 18.6 142 KELLEY R.S. 8180 18.8 15.4 122 21.9 18.4 119 LILY LAKE 9156 19.0 11.8 161 20.0 15.4 130 MONTE CRISTO 8960 33.3 27.2 122 33.0 22.9 144 SALT RIVER SUMMIT 7760 15.5 13.2 117 19.6 17.0 115 TRIAL LAKE 9992 31.9 22.7 141 30.6 22.4 137 ----- ----- 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.