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 FRIDAY: MARCH 25 , 2011 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 21.0 18.0 117 23.4 21.0 111 COTTONWOOD CREEK 7670 26.9 23.3 115 33.9 26.7 127 GRAND TARGHEE 9260 45.9 -M * -M -M * GRANITE CREEK 6770 21.4 18.6 115 22.6 19.6 115 GRASSY LAKE 7265 38.3 34.9 110 39.3 35.3 111 GROS VENTRE SUMMIT 8750 14.5 13.9 104 14.0 12.6 111 GUNSIGHT PASS 9820 16.8 -M * 16.3 -M * LEWIS LAKE DIVIDE 7850 39.2 34.8 113 -M 36.0 * PHILLIPS BENCH 8200 30.9 28.2 110 30.8 28.4 108 SALT RIVER SUMMIT 7760 17.4 14.1 123 21.4 18.2 118 SNAKE RIVER STATION 6920 -M 19.0 * 25.5 21.9 116 SPRING CREEK DIVIDE 9000 33.9 25.9 131 31.4 25.8 122 THUMB DIVIDE 7980 21.6 18.7 116 19.9 18.4 108 TOGWOTEE PASS 9580 27.8 24.2 115 29.4 23.9 123 TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 * WILLOW CREEK 8380 35.1 29.7 118 38.9 31.3 124 ----- ----- Basin wide percent of average 115 117 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 25.6 22.9 112 24.6 19.6 126 BLACK BEAR 8170 45.9 38.3 120 42.2 39.4 107 CANYON 7870 17.1 13.4 128 18.1 15.1 120 FISHER CREEK 9100 40.1 34.0 118 38.6 35.5 109 MADISON PLATEAU 7750 29.0 24.4 119 30.2 26.0 116 NORTHEAST ENTRANCE 7350 13.7 11.1 123 14.9 12.3 121 PARKER PEAK 9400 28.4 21.0 135 24.6 15.8 156 SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135 THUMB DIVIDE 7980 21.6 18.7 116 19.9 18.4 108 TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 * WHISKEY CREEK 6800 20.2 16.7 121 23.0 20.4 113 WHITE MILL 8700 27.3 23.6 116 27.6 26.3 105 WOLVERINE 7650 14.7 11.5 128 14.4 12.5 115 ----- ----- Basin wide percent of average 119 117 WIND RIVER BURROUGHS CREEK 8750 14.7 14.3 103 15.4 15.8 97 CASTLE CREEK 8400 6.8 -M * 7.6 -M * COLD SPRINGS 9630 8.2 8.5 96 7.9 10.0 79 DEER PARK 9700 18.4 16.5 112 21.3 21.1 101 HOBBS PARK 10100 13.9 14.1 99 12.2 12.1 101 LITTLE WARM 9370 12.2 11.4 107 12.4 12.8 97 SOUTH PASS 9040 17.0 16.2 105 14.6 17.7 82 ST. LAWRENCE ALT 8620 4.7 6.9 68 6.7 8.4 80 TOGWOTEE PASS 9580 27.8 24.2 115 29.4 23.9 123 TOWNSEND CREEK 8700 8.2 8.2 100 10.4 10.9 95 ----- ----- Basin wide percent of average 104 98 BIGHORN BASIN BALD MTN. 9380 21.2 18.9 112 17.5 16.7 105 BEAR TRAP MEADOW 8200 7.6 5.3 143 7.6 7.8 97 BLACKWATER 9780 25.4 23.7 107 24.7 19.9 124 BONE SPRINGS DIV 9350 18.0 15.5 116 15.1 13.9 109 EVENING STAR 9200 30.9 28.9 107 32.8 24.6 133 GRAVE SPRINGS 8550 8.6 8.9 97 8.6 9.3 92 KIRWIN 9550 10.9 10.9 100 12.1 10.7 113 MARQUETTE 8760 2.6 -M * 6.0 9.1 66 MIDDLE POWDER 7760 9.9 11.2 88 11.0 11.7 94 OWL CREEK 8975 5.2 5.2 100 5.3 5.4 98 POWDER RIVER PASS 9480 13.1 10.4 126 15.2 11.8 129 SHELL CREEK 9580 15.7 14.1 111 14.3 12.7 113 SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135 SYLVAN ROAD 7120 15.8 12.5 126 20.2 17.3 117 TIMBER CREEK 7950 3.6 5.4 67 4.5 6.9 65 YOUNTS PEAK 8350 17.1 16.7 102 14.9 15.7 95 ----- ----- Basin wide percent of average 108 111 SHOSHONE RIVER BLACKWATER 9780 25.4 23.7 107 24.7 19.9 124 EVENING STAR 9200 30.9 28.9 107 32.8 24.6 133 KIRWIN 9550 10.9 10.9 100 12.1 10.7 113 MARQUETTE 8760 2.6 -M * 6.0 9.1 66 SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135 SYLVAN ROAD 7120 15.8 12.5 126 20.2 17.3 117 YOUNTS PEAK 8350 17.1 16.7 102 14.9 15.7 95 ----- ----- Basin wide percent of average 108 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.6 5.3 143 7.6 7.8 97 BIG GOOSE 7990 7.4 9.8 76 9.1 8.0 114 BONE SPRINGS DIV 9350 18.0 15.5 116 15.1 13.9 109 BURGESS JUNCTION 7880 9.8 11.0 89 10.8 11.5 94 CLOUD PEAK RESERVOIR 9860 14.6 12.6 116 13.6 12.0 113 DOME LAKE 8880 12.4 11.7 106 12.1 12.4 98 GRAVE SPRINGS 8550 8.6 8.9 97 8.6 9.3 92 HANSEN SAWMILL 8360 6.4 6.3 102 7.1 7.7 92 LITTLE GOOSE 8870 8.2 -M * 12.5 -M * MIDDLE POWDER 7760 9.9 11.2 88 11.0 11.7 94 POWDER RIVER PASS 9480 13.1 10.4 126 15.2 11.8 129 SOLDIER PARK 8720 7.0 -M * 8.1 -M * SUCKER CREEK 8880 11.8 11.1 106 13.1 12.8 102 TIE CREEK 6870 6.0 5.9 102 9.0 9.4 96 ----- ----- Basin wide percent of average 105 103 BELLE FOURCHE BLIND PARK 6890 8.9 8.7 102 15.5 10.7 145 COLE CANYON 5910 7.4 6.7 110 11.1 6.4 173 NORTH RAPID CREEK 6130 8.1 8.0 101 13.3 8.3 160 ----- ----- Basin wide percent of average 104 157 UPPER N. PLATTE RIVER CINNABAR PARK 9574 24.0 17.7 136 30.2 19.4 156 COLUMBINE 9160 31.9 24.7 129 32.9 24.4 135 DIVIDE PEAK 8880 23.0 19.1 120 26.4 20.0 132 ELK RIVER 8700 24.3 18.9 129 25.5 18.9 135 JOE WRIGHT 10120 29.7 20.4 146 33.3 23.8 140 NORTH FRENCH CREEK 10130 41.7 27.9 149 -M 23.8 * OLD BATTLE 10000 40.3 31.2 129 29.2 33.5 87 SAGE CREEK BASIN 7850 20.3 11.1 183 17.9 11.6 154 SOUTH BRUSH CREEK 8440 18.0 12.7 142 20.9 15.6 134 TOWER 10500 51.2 43.9 117 46.2 37.1 125 WEBBER SPRINGS 9250 29.8 25.8 116 34.6 25.8 134 WILLOW CREEK PASS 9540 18.5 11.4 162 17.1 12.3 139 ----- ----- Basin wide percent of average 133 130 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 30.3 22.7 133 29.9 21.1 142 CASPER MTN. 7900 10.8 13.6 79 13.5 13.5 100 DEADMAN HILL 10220 20.7 15.5 134 21.2 16.1 132 DEER PARK 9700 18.4 16.5 112 21.3 21.1 101 LAPRELE CREEK 8375 12.6 10.7 118 13.6 12.0 113 RENO HILL 8400 13.8 13.3 104 16.3 14.0 116 ROACH 9700 19.8 16.3 121 22.7 17.9 127 SAND LAKE 10050 35.3 31.2 113 33.6 23.1 145 SOUTH PASS 9040 17.0 16.2 105 14.6 17.7 82 WINDY PEAK 7900 10.5 7.8 135 12.8 10.1 127 ----- ----- Basin wide percent of average 116 120 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M 11.5 * 13.4 15.1 89 DIVIDE PEAK 8880 23.0 19.1 120 26.4 20.0 132 OLD BATTLE 10000 40.3 31.2 129 29.2 33.5 87 SANDSTONE RS 8150 15.9 14.9 107 24.3 18.2 134 WHISKEY PARK 8950 -M 29.4 * 38.5 27.7 139 ----- ----- Basin wide percent of average 121 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 15.0 14.1 106 15.0 13.0 115 BLIND BULL SUM 8650 30.5 27.4 111 21.5 21.7 99 EAST RIM DIVIDE 7930 15.3 12.8 120 12.8 11.8 108 ELKHART PARK G.S. 9400 13.2 13.1 101 13.0 12.9 101 GROS VENTRE SUMMIT 8750 14.5 13.9 104 14.0 12.6 111 GUNSIGHT PASS 9820 16.8 -M * 16.3 -M * KENDALL R.S. 7740 13.7 14.6 94 15.1 14.3 106 LOOMIS PARK 8240 20.1 17.1 118 19.9 17.0 117 NEW FORK LAKE 8340 12.7 11.0 115 11.4 11.0 104 POCKET CREEK 9360 12.0 -M * 14.0 -M * SNIDER BASIN 8060 20.6 14.3 144 19.2 15.7 122 SPRING CREEK DIVIDE 9000 33.9 25.9 131 31.4 25.8 122 TRIPLE PEAK 8500 31.0 24.5 127 32.0 24.1 133 ----- ----- Basin wide percent of average 117 114 LOWER GREEN RIVER HAMS FORK 7840 16.9 12.4 136 15.1 11.9 127 HEWINTA 9519 13.0 11.4 114 16.2 13.9 117 HICKERSON PARK 9145 8.7 7.1 123 9.6 7.5 128 HOLE-IN-ROCK 9150 8.3 6.8 122 10.2 7.0 146 INDIAN CREEK 9425 30.9 27.1 114 26.9 24.6 109 KELLEY R.S. 8180 20.6 16.6 124 23.5 19.8 119 STEEL CREEK PARK 10200 16.5 15.2 109 19.1 15.4 124 ----- ----- Basin wide percent of average 119 120 UPPER BEAR RIVER BUG LAKE 7950 -M 20.4 * -M 18.7 * HAYDEN FORK 9212 22.8 16.0 143 28.0 20.2 139 KELLEY R.S. 8180 20.6 16.6 124 23.5 19.8 119 LILY LAKE 9156 20.5 12.7 161 21.1 16.8 126 MONTE CRISTO 8960 37.0 29.3 126 34.6 24.7 140 SALT RIVER SUMMIT 7760 17.4 14.1 123 21.4 18.2 118 TRIAL LAKE 9992 34.3 24.5 140 32.7 24.2 135 ----- ----- 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.