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 TUESDAY: MARCH 22 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.3 17.8 114 22.9 20.7 111 COTTONWOOD CREEK 7670 26.4 22.8 116 33.2 26.2 127 GRAND TARGHEE 9260 43.9 -M * -M -M * GRANITE CREEK 6770 20.7 18.5 112 21.8 19.4 112 GRASSY LAKE 7265 37.5 34.3 109 38.8 34.8 111 GROS VENTRE SUMMIT 8750 14.4 13.6 106 13.9 12.3 113 GUNSIGHT PASS 9820 16.4 -M * 16.0 -M * LEWIS LAKE DIVIDE 7850 38.3 34.2 112 -M 35.6 * PHILLIPS BENCH 8200 29.9 27.7 108 29.9 27.9 107 SALT RIVER SUMMIT 7760 16.7 13.9 120 20.8 17.9 116 SNAKE RIVER STATION 6920 -M 18.9 * 25.2 21.6 117 SPRING CREEK DIVIDE 9000 32.9 25.5 129 30.8 25.4 121 THUMB DIVIDE 7980 21.3 18.4 116 19.8 18.2 109 TOGWOTEE PASS 9580 27.1 23.8 114 28.8 23.5 123 TWO OCEAN PLATEAU 9240 -M 26.7 * -M 26.6 * WILLOW CREEK 8380 34.0 29.2 116 38.0 30.8 123 ----- ----- Basin wide percent of average 114 116 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.0 22.6 111 24.0 19.3 124 BLACK BEAR 8170 45.1 37.9 119 41.8 38.7 108 CANYON 7870 16.8 13.2 127 17.7 14.8 120 FISHER CREEK 9100 39.3 33.5 117 37.7 34.9 108 MADISON PLATEAU 7750 28.6 23.9 120 30.0 25.5 118 NORTHEAST ENTRANCE 7350 13.5 10.9 124 14.7 12.2 120 PARKER PEAK 9400 27.7 20.7 134 24.1 15.5 155 SYLVAN LAKE 8420 23.2 21.6 107 26.7 20.1 133 THUMB DIVIDE 7980 21.3 18.4 116 19.8 18.2 109 TWO OCEAN PLATEAU 9240 -M 26.7 * -M 26.6 * WHISKEY CREEK 6800 20.1 16.5 122 22.6 20.1 112 WHITE MILL 8700 26.8 23.2 116 27.1 25.9 105 WOLVERINE 7650 14.4 11.5 125 14.1 12.3 115 ----- ----- Basin wide percent of average 119 117 WIND RIVER BURROUGHS CREEK 8750 14.4 14.0 103 15.1 15.5 97 CASTLE CREEK 8400 6.7 -M * 7.5 -M * COLD SPRINGS 9630 8.2 8.4 98 7.9 9.8 81 DEER PARK 9700 17.6 16.2 109 20.5 20.7 99 HOBBS PARK 10100 13.8 13.8 100 12.0 11.8 102 LITTLE WARM 9370 12.0 11.1 108 12.2 12.6 97 SOUTH PASS 9040 16.4 16.1 102 14.2 17.3 82 ST. LAWRENCE ALT 8620 4.7 6.8 69 6.6 8.2 80 TOGWOTEE PASS 9580 27.1 23.8 114 28.8 23.5 123 TOWNSEND CREEK 8700 8.1 8.1 100 10.2 10.6 96 ----- ----- Basin wide percent of average 103 98 BIGHORN BASIN BALD MTN. 9380 20.7 18.5 112 17.2 16.3 106 BEAR TRAP MEADOW 8200 7.1 5.2 137 7.4 7.5 99 BLACKWATER 9780 24.9 23.3 107 24.2 19.5 124 BONE SPRINGS DIV 9350 17.7 15.2 116 14.8 13.6 109 EVENING STAR 9200 30.2 28.4 106 32.6 24.3 134 GRAVE SPRINGS 8550 7.8 8.7 90 7.9 9.1 87 KIRWIN 9550 10.9 10.6 103 12.0 10.5 114 MARQUETTE 8760 2.6 -M * 5.9 8.9 66 MIDDLE POWDER 7760 8.6 10.9 79 10.4 11.4 91 OWL CREEK 8975 5.3 5.1 104 5.3 5.3 100 POWDER RIVER PASS 9480 12.8 10.2 125 15.0 11.5 130 SHELL CREEK 9580 15.5 13.8 112 14.0 12.4 113 SYLVAN LAKE 8420 23.2 21.6 107 26.7 20.1 133 SYLVAN ROAD 7120 15.4 12.4 124 19.7 17.1 115 TIMBER CREEK 7950 3.6 5.3 68 4.5 6.7 67 YOUNTS PEAK 8350 16.9 16.4 103 14.6 15.4 95 ----- ----- Basin wide percent of average 107 111 SHOSHONE RIVER BLACKWATER 9780 24.9 23.3 107 24.2 19.5 124 EVENING STAR 9200 30.2 28.4 106 32.6 24.3 134 KIRWIN 9550 10.9 10.6 103 12.0 10.5 114 MARQUETTE 8760 2.6 -M * 5.9 8.9 66 SYLVAN LAKE 8420 23.2 21.6 107 26.7 20.1 133 SYLVAN ROAD 7120 15.4 12.4 124 19.7 17.1 115 YOUNTS PEAK 8350 16.9 16.4 103 14.6 15.4 95 ----- ----- Basin wide percent of average 108 117 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.1 5.2 137 7.4 7.5 99 BIG GOOSE 7990 7.3 9.4 78 9.0 7.8 115 BONE SPRINGS DIV 9350 17.7 15.2 116 14.8 13.6 109 BURGESS JUNCTION 7880 9.8 10.7 92 10.7 11.2 96 CLOUD PEAK RESERVOIR 9860 14.4 12.3 117 13.5 11.7 115 DOME LAKE 8880 11.9 11.4 104 12.0 12.1 99 GRAVE SPRINGS 8550 7.8 8.7 90 7.9 9.1 87 HANSEN SAWMILL 8360 6.5 6.2 105 7.1 7.5 95 LITTLE GOOSE 8870 8.2 -M * 12.4 -M * MIDDLE POWDER 7760 8.6 10.9 79 10.4 11.4 91 POWDER RIVER PASS 9480 12.8 10.2 125 15.0 11.5 130 SOLDIER PARK 8720 7.0 -M * 8.1 -M * SUCKER CREEK 8880 11.7 10.9 107 12.9 12.5 103 TIE CREEK 6870 6.1 6.0 102 9.0 9.1 99 ----- ----- Basin wide percent of average 104 104 BELLE FOURCHE BLIND PARK 6890 9.0 8.7 103 15.4 10.5 147 COLE CANYON 5910 7.4 6.5 114 10.9 6.3 173 NORTH RAPID CREEK 6130 8.0 7.8 103 13.1 8.2 160 ----- ----- Basin wide percent of average 106 158 UPPER N. PLATTE RIVER CINNABAR PARK 9574 23.4 17.5 134 29.9 19.1 157 COLUMBINE 9160 32.6 24.5 133 32.6 23.9 136 DIVIDE PEAK 8880 22.0 18.7 118 25.8 19.7 131 ELK RIVER 8700 23.9 18.5 129 25.2 18.6 135 JOE WRIGHT 10120 29.4 20.0 147 33.1 23.3 142 NORTH FRENCH CREEK 10130 41.4 27.2 152 -M 23.3 * OLD BATTLE 10000 39.8 30.6 130 29.2 32.9 89 SAGE CREEK BASIN 7850 19.7 10.8 182 17.5 11.4 154 SOUTH BRUSH CREEK 8440 17.6 12.4 142 20.8 15.3 136 TOWER 10500 51.2 43.1 119 46.2 36.5 127 WEBBER SPRINGS 9250 28.9 25.4 114 33.6 25.3 133 WILLOW CREEK PASS 9540 18.5 11.2 165 17.0 12.0 142 ----- ----- Basin wide percent of average 134 131 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 29.4 22.1 133 29.0 20.6 141 CASPER MTN. 7900 10.7 13.3 80 13.2 13.1 101 DEADMAN HILL 10220 20.5 15.2 135 20.9 15.8 132 DEER PARK 9700 17.6 16.2 109 20.5 20.7 99 LAPRELE CREEK 8375 11.8 10.5 112 13.1 11.7 112 RENO HILL 8400 13.2 12.9 102 15.5 13.7 113 ROACH 9700 19.6 16.0 123 22.6 17.5 129 SAND LAKE 10050 34.5 30.5 113 32.9 22.6 146 SOUTH PASS 9040 16.4 16.1 102 14.2 17.3 82 WINDY PEAK 7900 9.7 7.6 128 12.3 9.9 124 ----- ----- Basin wide percent of average 114 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.5 * 13.3 14.8 90 DIVIDE PEAK 8880 22.0 18.7 118 25.8 19.7 131 OLD BATTLE 10000 39.8 30.6 130 29.2 32.9 89 SANDSTONE RS 8150 15.4 14.8 104 24.1 17.9 135 WHISKEY PARK 8950 -M 28.9 * 37.4 27.2 138 ----- ----- Basin wide percent of average 120 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.2 13.9 102 14.3 12.8 112 BLIND BULL SUM 8650 29.4 27.0 109 20.8 21.4 97 EAST RIM DIVIDE 7930 14.9 12.6 118 12.6 11.6 109 ELKHART PARK G.S. 9400 12.7 12.9 98 12.6 12.6 100 GROS VENTRE SUMMIT 8750 14.4 13.6 106 13.9 12.3 113 GUNSIGHT PASS 9820 16.4 -M * 16.0 -M * KENDALL R.S. 7740 13.1 14.4 91 14.7 14.1 104 LOOMIS PARK 8240 19.5 16.9 115 19.5 16.8 116 NEW FORK LAKE 8340 12.2 10.9 112 11.0 10.8 102 POCKET CREEK 9360 11.2 -M * 13.4 -M * SNIDER BASIN 8060 19.9 14.1 141 18.6 15.5 120 SPRING CREEK DIVIDE 9000 32.9 25.5 129 30.8 25.4 121 TRIPLE PEAK 8500 30.1 24.1 125 31.2 23.8 131 ----- ----- Basin wide percent of average 115 113 LOWER GREEN RIVER HAMS FORK 7840 16.6 12.5 133 15.0 11.7 128 HEWINTA 9519 12.5 11.1 113 16.4 13.6 121 HICKERSON PARK 9145 8.3 6.9 120 9.6 7.4 130 HOLE-IN-ROCK 9150 8.2 6.7 122 10.1 6.9 146 INDIAN CREEK 9425 30.1 26.5 114 26.3 24.2 109 KELLEY R.S. 8180 19.9 16.3 122 22.8 19.4 118 STEEL CREEK PARK 10200 16.4 14.9 110 19.0 15.1 126 ----- ----- Basin wide percent of average 118 121 UPPER BEAR RIVER BUG LAKE 7950 28.4 20.1 141 27.3 18.4 148 HAYDEN FORK 9212 22.4 15.7 143 27.7 19.8 140 KELLEY R.S. 8180 19.9 16.3 122 22.8 19.4 118 LILY LAKE 9156 20.3 12.4 164 21.0 16.5 127 MONTE CRISTO 8960 35.8 28.8 124 34.4 24.3 142 SALT RIVER SUMMIT 7760 16.7 13.9 120 20.8 17.9 116 TRIAL LAKE 9992 33.9 24.0 141 32.5 23.8 137 ----- ----- Basin wide percent of average 135 133 ----------------------------------------------------------------------------- -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.