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 27 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.4 18.1 118 23.5 21.2 111 COTTONWOOD CREEK 7670 26.8 23.6 114 34.0 27.0 126 GRAND TARGHEE 9260 46.4 -M * -M -M * GRANITE CREEK 6770 21.7 18.7 116 22.8 19.8 115 GRASSY LAKE 7265 38.7 35.3 110 39.6 35.6 111 GROS VENTRE SUMMIT 8750 14.7 14.0 105 14.2 12.7 112 GUNSIGHT PASS 9820 17.2 -M * 16.5 -M * LEWIS LAKE DIVIDE 7850 39.9 35.1 114 -M 36.4 * PHILLIPS BENCH 8200 31.7 28.5 111 31.4 28.7 109 SALT RIVER SUMMIT 7760 17.4 14.3 122 21.5 18.5 116 SNAKE RIVER STATION 6920 -M 19.1 * 25.7 22.0 117 SPRING CREEK DIVIDE 9000 34.1 26.2 130 31.5 26.1 121 THUMB DIVIDE 7980 21.9 18.9 116 20.1 18.6 108 TOGWOTEE PASS 9580 28.0 24.5 114 29.6 24.2 122 TWO OCEAN PLATEAU 9240 -M 27.6 * -M 27.3 * WILLOW CREEK 8380 35.4 30.0 118 39.1 31.7 123 ----- ----- Basin wide percent of average 115 116 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.7 23.1 111 24.5 19.8 124 BLACK BEAR 8170 46.6 38.7 120 42.5 39.8 107 CANYON 7870 17.1 13.5 127 18.3 15.2 120 FISHER CREEK 9100 40.7 34.5 118 39.1 35.9 109 MADISON PLATEAU 7750 29.5 24.7 119 31.1 26.3 118 NORTHEAST ENTRANCE 7350 14.0 11.2 125 15.1 12.5 121 PARKER PEAK 9400 28.5 21.3 134 -M 16.0 * SYLVAN LAKE 8420 24.2 22.2 109 27.7 20.6 134 THUMB DIVIDE 7980 21.9 18.9 116 20.1 18.6 108 TWO OCEAN PLATEAU 9240 -M 27.6 * -M 27.3 * WHISKEY CREEK 6800 20.4 16.9 121 23.3 20.7 113 WHITE MILL 8700 27.9 23.9 117 28.1 26.6 106 WOLVERINE 7650 14.7 11.5 128 14.2 12.6 113 ----- ----- Basin wide percent of average 120 114 WIND RIVER BURROUGHS CREEK 8750 14.8 14.5 102 15.5 16.0 97 CASTLE CREEK 8400 6.7 -M * 7.4 -M * COLD SPRINGS 9630 8.4 8.7 97 7.9 10.2 77 DEER PARK 9700 18.5 16.6 111 21.4 21.3 100 HOBBS PARK 10100 13.9 14.4 97 12.1 12.3 98 LITTLE WARM 9370 12.3 11.6 106 12.5 13.0 96 SOUTH PASS 9040 17.1 16.3 105 14.7 18.0 82 ST. LAWRENCE ALT 8620 4.7 7.0 67 6.6 8.5 78 TOGWOTEE PASS 9580 28.0 24.5 114 29.6 24.2 122 TOWNSEND CREEK 8700 8.1 8.3 98 10.4 11.1 94 ----- ----- Basin wide percent of average 103 97 BIGHORN BASIN BALD MTN. 9380 21.3 19.1 112 17.5 16.9 104 BEAR TRAP MEADOW 8200 7.9 5.2 152 7.6 7.9 96 BLACKWATER 9780 25.5 24.0 106 24.7 20.1 123 BONE SPRINGS DIV 9350 18.2 15.8 115 15.1 14.1 107 EVENING STAR 9200 31.1 29.3 106 32.8 24.9 132 GRAVE SPRINGS 8550 8.8 9.0 98 8.8 9.4 94 KIRWIN 9550 11.0 11.0 100 12.0 10.9 110 MARQUETTE 8760 2.6 -M * 5.8 9.3 62 MIDDLE POWDER 7760 10.2 11.3 90 11.1 11.9 93 OWL CREEK 8975 5.3 5.3 100 5.2 5.6 93 POWDER RIVER PASS 9480 13.3 10.5 127 15.3 11.9 129 SHELL CREEK 9580 15.9 14.3 111 14.5 12.9 112 SYLVAN LAKE 8420 24.2 22.2 109 27.7 20.6 134 SYLVAN ROAD 7120 16.0 12.6 127 20.3 17.4 117 TIMBER CREEK 7950 3.6 5.4 67 4.5 7.0 64 YOUNTS PEAK 8350 17.3 16.9 102 14.9 15.9 94 ----- ----- Basin wide percent of average 108 110 SHOSHONE RIVER BLACKWATER 9780 25.5 24.0 106 24.7 20.1 123 EVENING STAR 9200 31.1 29.3 106 32.8 24.9 132 KIRWIN 9550 11.0 11.0 100 12.0 10.9 110 MARQUETTE 8760 2.6 -M * 5.8 9.3 62 SYLVAN LAKE 8420 24.2 22.2 109 27.7 20.6 134 SYLVAN ROAD 7120 16.0 12.6 127 20.3 17.4 117 YOUNTS PEAK 8350 17.3 16.9 102 14.9 15.9 94 ----- ----- Basin wide percent of average 108 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.9 5.2 152 7.6 7.9 96 BIG GOOSE 7990 7.4 10.0 74 9.1 8.2 111 BONE SPRINGS DIV 9350 18.2 15.8 115 15.1 14.1 107 BURGESS JUNCTION 7880 10.0 11.2 89 10.8 11.7 92 CLOUD PEAK RESERVOIR 9860 14.9 12.8 116 13.4 12.3 109 DOME LAKE 8880 12.4 11.9 104 12.2 12.6 97 GRAVE SPRINGS 8550 8.8 9.0 98 8.8 9.4 94 HANSEN SAWMILL 8360 6.6 6.3 105 7.2 7.8 92 LITTLE GOOSE 8870 8.4 -M * 12.7 -M * MIDDLE POWDER 7760 10.2 11.3 90 11.1 11.9 93 POWDER RIVER PASS 9480 13.3 10.5 127 15.3 11.9 129 SOLDIER PARK 8720 7.3 -M * 8.5 -M * SUCKER CREEK 8880 12.0 11.3 106 13.3 13.0 102 TIE CREEK 6870 6.1 5.7 107 9.2 9.5 97 ----- ----- Basin wide percent of average 106 102 BELLE FOURCHE BLIND PARK 6890 9.0 8.5 106 15.8 10.8 146 COLE CANYON 5910 7.6 6.7 113 11.4 6.5 175 NORTH RAPID CREEK 6130 8.2 8.0 103 13.4 8.4 160 ----- ----- Basin wide percent of average 107 158 UPPER N. PLATTE RIVER CINNABAR PARK 9574 24.2 17.8 136 30.3 19.6 155 COLUMBINE 9160 32.6 24.8 131 33.4 24.7 135 DIVIDE PEAK 8880 23.6 19.4 122 27.0 20.3 133 ELK RIVER 8700 25.0 19.1 131 26.0 19.1 136 JOE WRIGHT 10120 30.5 20.7 147 33.8 24.1 140 NORTH FRENCH CREEK 10130 42.6 28.3 151 -M 24.0 * OLD BATTLE 10000 41.9 31.5 133 29.3 33.9 86 SAGE CREEK BASIN 7850 20.8 11.3 184 18.4 11.8 156 SOUTH BRUSH CREEK 8440 18.5 12.8 145 21.2 15.9 133 TOWER 10500 52.7 44.5 118 46.2 37.6 123 WEBBER SPRINGS 9250 30.8 26.1 118 35.4 26.1 136 WILLOW CREEK PASS 9540 18.8 11.6 162 17.3 12.4 140 ----- ----- Basin wide percent of average 135 130 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 30.6 23.0 133 30.1 21.4 141 CASPER MTN. 7900 11.2 13.9 81 13.8 13.8 100 DEADMAN HILL 10220 21.1 15.8 134 21.3 16.4 130 DEER PARK 9700 18.5 16.6 111 21.4 21.3 100 LAPRELE CREEK 8375 13.0 10.8 120 13.9 12.2 114 RENO HILL 8400 14.2 13.6 104 16.6 14.3 116 ROACH 9700 20.1 16.6 121 23.0 18.1 127 SAND LAKE 10050 35.7 31.6 113 33.8 23.4 144 SOUTH PASS 9040 17.1 16.3 105 14.7 18.0 82 WINDY PEAK 7900 10.7 7.9 135 13.0 10.2 127 ----- ----- Basin wide percent of average 116 119 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.4 * 13.9 15.4 90 DIVIDE PEAK 8880 23.6 19.4 122 27.0 20.3 133 OLD BATTLE 10000 41.9 31.5 133 29.3 33.9 86 SANDSTONE RS 8150 16.7 15.0 111 25.0 18.4 136 WHISKEY PARK 8950 -M 29.8 * 39.6 28.0 141 ----- ----- Basin wide percent of average 125 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.1 14.3 106 15.1 13.1 115 BLIND BULL SUM 8650 30.8 27.7 111 21.6 21.9 99 EAST RIM DIVIDE 7930 15.6 13.0 120 13.0 11.9 109 ELKHART PARK G.S. 9400 13.5 13.2 102 13.2 13.0 102 GROS VENTRE SUMMIT 8750 14.7 14.0 105 14.2 12.7 112 GUNSIGHT PASS 9820 17.2 -M * 16.5 -M * KENDALL R.S. 7740 14.0 14.6 96 15.4 14.4 107 LOOMIS PARK 8240 20.5 17.3 118 20.3 17.2 118 NEW FORK LAKE 8340 12.9 11.1 116 11.6 11.1 105 POCKET CREEK 9360 12.3 -M * 14.1 -M * SNIDER BASIN 8060 20.7 14.5 143 19.2 15.9 121 SPRING CREEK DIVIDE 9000 34.1 26.2 130 31.5 26.1 121 TRIPLE PEAK 8500 31.3 24.7 127 32.1 24.4 132 ----- ----- Basin wide percent of average 117 114 LOWER GREEN RIVER HAMS FORK 7840 17.0 12.3 138 15.2 12.0 127 HEWINTA 9519 13.3 11.6 115 16.5 14.2 116 HICKERSON PARK 9145 8.8 7.2 122 9.9 7.7 129 HOLE-IN-ROCK 9150 8.7 6.9 126 10.4 7.2 144 INDIAN CREEK 9425 31.3 27.4 114 27.1 24.9 109 KELLEY R.S. 8180 20.8 16.7 125 23.6 20.0 118 STEEL CREEK PARK 10200 16.6 15.4 108 19.1 15.7 122 ----- ----- Basin wide percent of average 119 120 UPPER BEAR RIVER BUG LAKE 7950 -M 20.7 * -M 18.9 * HAYDEN FORK 9212 23.0 16.2 142 28.1 20.5 137 KELLEY R.S. 8180 20.8 16.7 125 23.6 20.0 118 LILY LAKE 9156 20.7 12.8 162 21.2 17.0 125 MONTE CRISTO 8960 37.1 29.5 126 36.0 25.0 144 SALT RIVER SUMMIT 7760 17.4 14.3 122 21.5 18.5 116 TRIAL LAKE 9992 34.9 24.7 141 32.8 24.5 134 ----- ----- Basin wide percent of average 135 130 ----------------------------------------------------------------------------- -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.