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 WEDNESDAY: MARCH 23 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 20.7 17.9 116 23.2 20.8 112 COTTONWOOD CREEK 7670 26.8 23.0 117 33.8 26.4 128 GRAND TARGHEE 9260 45.6 -M * -M -M * GRANITE CREEK 6770 21.0 18.5 114 22.2 19.5 114 GRASSY LAKE 7265 38.1 34.5 110 39.2 34.9 112 GROS VENTRE SUMMIT 8750 14.4 13.7 105 13.8 12.4 111 GUNSIGHT PASS 9820 16.6 -M * 16.1 -M * LEWIS LAKE DIVIDE 7850 38.8 34.4 113 -M 35.7 * PHILLIPS BENCH 8200 30.7 27.9 110 30.1 28.1 107 SALT RIVER SUMMIT 7760 17.2 14.0 123 21.1 18.0 117 SNAKE RIVER STATION 6920 -M 18.9 * 25.5 21.7 118 SPRING CREEK DIVIDE 9000 33.6 25.6 131 31.3 25.5 123 THUMB DIVIDE 7980 21.5 18.5 116 19.9 18.3 109 TOGWOTEE PASS 9580 27.7 23.9 116 29.2 23.6 124 TWO OCEAN PLATEAU 9240 -M 26.9 * -M 26.8 * WILLOW CREEK 8380 34.9 29.3 119 38.7 31.0 125 ----- ----- Basin wide percent of average 116 117 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.4 22.7 112 24.4 19.4 126 BLACK BEAR 8170 45.7 38.0 120 42.0 38.9 108 CANYON 7870 17.1 13.3 129 18.0 14.9 121 FISHER CREEK 9100 39.9 33.6 119 38.4 35.1 109 MADISON PLATEAU 7750 28.8 24.1 120 30.1 25.6 118 NORTHEAST ENTRANCE 7350 13.7 11.0 125 14.9 12.2 122 PARKER PEAK 9400 28.2 20.8 136 24.5 15.6 157 SYLVAN LAKE 8420 23.9 21.7 110 27.4 20.2 136 THUMB DIVIDE 7980 21.5 18.5 116 19.9 18.3 109 TWO OCEAN PLATEAU 9240 -M 26.9 * -M 26.8 * WHISKEY CREEK 6800 20.2 16.5 122 22.9 20.2 113 WHITE MILL 8700 27.2 23.3 117 27.5 26.1 105 WOLVERINE 7650 14.6 11.5 127 14.2 12.4 115 ----- ----- Basin wide percent of average 120 117 WIND RIVER BURROUGHS CREEK 8750 14.6 14.2 103 15.3 15.6 98 CASTLE CREEK 8400 6.7 -M * 7.5 -M * COLD SPRINGS 9630 8.2 8.5 96 7.9 9.9 80 DEER PARK 9700 18.2 16.3 112 21.1 20.8 101 HOBBS PARK 10100 13.8 13.9 99 12.0 11.9 101 LITTLE WARM 9370 12.1 11.2 108 12.2 12.7 96 SOUTH PASS 9040 16.9 16.1 105 14.6 17.5 83 ST. LAWRENCE ALT 8620 4.7 6.9 68 6.6 8.2 80 TOGWOTEE PASS 9580 27.7 23.9 116 29.2 23.6 124 TOWNSEND CREEK 8700 8.1 8.1 100 10.2 10.7 95 ----- ----- Basin wide percent of average 104 99 BIGHORN BASIN BALD MTN. 9380 21.2 18.6 114 17.4 16.4 106 BEAR TRAP MEADOW 8200 7.4 5.2 142 7.7 7.6 101 BLACKWATER 9780 25.4 23.5 108 24.5 19.7 124 BONE SPRINGS DIV 9350 17.9 15.3 117 15.0 13.7 109 EVENING STAR 9200 30.5 28.6 107 32.7 24.4 134 GRAVE SPRINGS 8550 8.5 8.8 97 8.5 9.1 93 KIRWIN 9550 10.9 10.7 102 12.0 10.6 113 MARQUETTE 8760 2.7 -M * 6.0 8.9 67 MIDDLE POWDER 7760 9.7 11.0 88 10.8 11.5 94 OWL CREEK 8975 5.3 5.2 102 5.3 5.3 100 POWDER RIVER PASS 9480 13.0 10.3 126 15.2 11.6 131 SHELL CREEK 9580 15.6 13.9 112 14.2 12.5 114 SYLVAN LAKE 8420 23.9 21.7 110 27.4 20.2 136 SYLVAN ROAD 7120 16.0 12.5 128 20.1 17.1 118 TIMBER CREEK 7950 3.7 5.3 70 4.5 6.7 67 YOUNTS PEAK 8350 17.0 16.5 103 14.7 15.5 95 ----- ----- Basin wide percent of average 109 112 SHOSHONE RIVER BLACKWATER 9780 25.4 23.5 108 24.5 19.7 124 EVENING STAR 9200 30.5 28.6 107 32.7 24.4 134 KIRWIN 9550 10.9 10.7 102 12.0 10.6 113 MARQUETTE 8760 2.7 -M * 6.0 8.9 67 SYLVAN LAKE 8420 23.9 21.7 110 27.4 20.2 136 SYLVAN ROAD 7120 16.0 12.5 128 20.1 17.1 118 YOUNTS PEAK 8350 17.0 16.5 103 14.7 15.5 95 ----- ----- Basin wide percent of average 109 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.4 5.2 142 7.7 7.6 101 BIG GOOSE 7990 7.3 9.5 77 9.0 7.9 114 BONE SPRINGS DIV 9350 17.9 15.3 117 15.0 13.7 109 BURGESS JUNCTION 7880 9.7 10.8 90 10.7 11.3 95 CLOUD PEAK RESERVOIR 9860 14.5 12.4 117 13.5 11.8 114 DOME LAKE 8880 12.2 11.5 106 12.3 12.2 101 GRAVE SPRINGS 8550 8.5 8.8 97 8.5 9.1 93 HANSEN SAWMILL 8360 6.3 6.3 100 7.1 7.6 93 LITTLE GOOSE 8870 8.1 -M * 12.4 -M * MIDDLE POWDER 7760 9.7 11.0 88 10.8 11.5 94 POWDER RIVER PASS 9480 13.0 10.3 126 15.2 11.6 131 SOLDIER PARK 8720 6.9 -M * 8.1 -M * SUCKER CREEK 8880 11.7 11.0 106 13.0 12.6 103 TIE CREEK 6870 6.1 5.9 103 9.0 9.2 98 ----- ----- Basin wide percent of average 105 105 BELLE FOURCHE BLIND PARK 6890 8.9 8.7 102 15.4 10.6 145 COLE CANYON 5910 7.5 6.6 114 11.0 6.3 175 NORTH RAPID CREEK 6130 8.1 7.9 103 13.2 8.3 159 ----- ----- Basin wide percent of average 106 157 UPPER N. PLATTE RIVER CINNABAR PARK 9574 23.6 17.5 135 30.1 19.2 157 COLUMBINE 9160 31.9 24.5 130 32.7 24.1 136 DIVIDE PEAK 8880 22.7 18.9 120 26.3 19.8 133 ELK RIVER 8700 24.2 18.6 130 25.3 18.7 135 JOE WRIGHT 10120 29.5 20.1 147 33.1 23.5 141 NORTH FRENCH CREEK 10130 41.3 27.4 151 -M 23.5 * OLD BATTLE 10000 39.6 30.8 129 29.1 33.1 88 SAGE CREEK BASIN 7850 19.8 11.0 180 17.8 11.5 155 SOUTH BRUSH CREEK 8440 17.6 12.5 141 20.8 15.4 135 TOWER 10500 50.9 43.4 117 46.1 36.7 126 WEBBER SPRINGS 9250 29.4 25.6 115 34.3 25.5 135 WILLOW CREEK PASS 9540 18.5 11.3 164 17.1 12.1 141 ----- ----- Basin wide percent of average 133 131 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 30.0 22.3 135 29.1 20.8 140 CASPER MTN. 7900 10.7 13.4 80 13.4 13.3 101 DEADMAN HILL 10220 20.5 15.3 134 21.0 15.9 132 DEER PARK 9700 18.2 16.3 112 21.1 20.8 101 LAPRELE CREEK 8375 12.4 10.6 117 13.4 11.8 114 RENO HILL 8400 13.6 13.0 105 16.0 13.8 116 ROACH 9700 19.5 16.1 121 22.7 17.7 128 SAND LAKE 10050 34.9 30.7 114 33.3 22.7 147 SOUTH PASS 9040 16.9 16.1 105 14.6 17.5 83 WINDY PEAK 7900 10.4 7.7 135 12.6 9.9 127 ----- ----- Basin wide percent of average 116 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.5 * 13.3 14.9 89 DIVIDE PEAK 8880 22.7 18.9 120 26.3 19.8 133 OLD BATTLE 10000 39.6 30.8 129 29.1 33.1 88 SANDSTONE RS 8150 15.8 14.9 106 24.3 18.0 135 WHISKEY PARK 8950 -M 29.1 * 38.3 27.3 140 ----- ----- Basin wide percent of average 121 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.7 14.0 105 14.8 12.9 115 BLIND BULL SUM 8650 30.0 27.1 111 21.2 21.5 99 EAST RIM DIVIDE 7930 15.1 12.7 119 12.7 11.7 109 ELKHART PARK G.S. 9400 12.9 12.9 100 12.8 12.7 101 GROS VENTRE SUMMIT 8750 14.4 13.7 105 13.8 12.4 111 GUNSIGHT PASS 9820 16.6 -M * 16.1 -M * KENDALL R.S. 7740 13.3 14.5 92 14.9 14.2 105 LOOMIS PARK 8240 19.7 17.0 116 19.8 16.8 118 NEW FORK LAKE 8340 12.4 10.9 114 11.2 10.9 103 POCKET CREEK 9360 11.7 -M * 13.7 -M * SNIDER BASIN 8060 20.4 14.2 144 19.1 15.5 123 SPRING CREEK DIVIDE 9000 33.6 25.6 131 31.3 25.5 123 TRIPLE PEAK 8500 30.6 24.2 126 31.8 23.9 133 ----- ----- Basin wide percent of average 116 114 LOWER GREEN RIVER HAMS FORK 7840 16.7 12.4 135 14.9 11.8 126 HEWINTA 9519 12.8 11.2 114 16.3 13.7 119 HICKERSON PARK 9145 8.6 7.0 123 9.3 7.4 126 HOLE-IN-ROCK 9150 8.3 6.7 124 10.1 6.9 146 INDIAN CREEK 9425 30.5 26.7 114 26.6 24.3 109 KELLEY R.S. 8180 20.4 16.4 124 23.3 19.5 119 STEEL CREEK PARK 10200 16.4 15.0 109 19.0 15.2 125 ----- ----- Basin wide percent of average 119 121 UPPER BEAR RIVER BUG LAKE 7950 -M 20.2 * -M 18.5 * HAYDEN FORK 9212 22.4 15.8 142 27.9 20.0 140 KELLEY R.S. 8180 20.4 16.4 124 23.3 19.5 119 LILY LAKE 9156 20.2 12.5 162 21.1 16.6 127 MONTE CRISTO 8960 36.8 29.0 127 34.4 24.4 141 SALT RIVER SUMMIT 7760 17.2 14.0 123 21.1 18.0 117 TRIAL LAKE 9992 33.9 24.2 140 32.6 23.9 136 ----- ----- Basin wide percent of average 135 131 ----------------------------------------------------------------------------- -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.