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 SATURDAY: APRIL 12 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 17.3 * -M 22.7 * COTTONWOOD CREEK 7670 26.8 24.1 111 26.6 29.3 91 GRAND TARGHEE 9260 50.9 -M * 35.2 -M * GRANITE CREEK 6770 19.5 17.5 111 24.4 20.9 117 GRASSY LAKE 7265 38.9 37.1 105 44.8 38.1 118 GROS VENTRE SUMMIT 8750 13.6 14.6 93 15.0 13.8 109 GUNSIGHT PASS 9820 12.7 -M * 15.2 -M * LEWIS LAKE DIVIDE 7850 37.7 36.7 103 39.8 38.9 102 PHILLIPS BENCH 8200 35.5 30.4 117 37.0 30.8 120 SALT RIVER SUMMIT 7760 14.6 14.7 99 17.0 20.0 85 SNAKE RIVER STATION 6920 21.8 18.1 120 29.1 23.7 123 SPRING CREEK DIVIDE 9000 23.3 28.3 82 25.3 28.1 90 THUMB DIVIDE 7980 20.3 19.0 107 22.0 20.2 109 TOGWOTEE PASS 9580 28.9 26.4 109 31.1 26.4 118 TWO OCEAN PLATEAU 9240 -M 30.2 * -M 29.5 * WILLOW CREEK 8380 35.5 31.7 112 40.5 34.4 118 ----- ----- Basin wide percent of average 106 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.6 25.2 106 25.3 21.5 118 BLACK BEAR 8170 47.8 40.8 117 -M 42.8 * CANYON 7870 18.7 14.1 133 22.0 16.4 134 FISHER CREEK 9100 43.2 36.8 117 -M 38.7 * MADISON PLATEAU 7750 31.1 26.1 119 33.2 28.5 116 NORTHEAST ENTRANCE 7350 -M 11.0 * -M 13.5 * PARKER PEAK 9400 28.4 23.2 122 -M 17.5 * SYLVAN LAKE 8420 23.1 24.0 96 27.9 22.4 125 THUMB DIVIDE 7980 20.3 19.0 107 22.0 20.2 109 TWO OCEAN PLATEAU 9240 -M 30.2 * -M 29.5 * WHISKEY CREEK 6800 19.4 17.8 109 25.9 22.4 116 WHITE MILL 8700 29.5 25.7 115 -M 28.7 * WOLVERINE 7650 11.7 11.4 103 14.9 13.7 109 ----- ----- Basin wide percent of average 114 118 WIND RIVER BURROUGHS CREEK 8750 16.7 15.2 110 19.7 17.4 113 COLD SPRINGS 9630 7.6 7.8 97 10.9 11.8 92 DEER PARK 9700 17.1 17.0 101 21.7 23.7 92 HOBBS PARK 10100 15.6 16.6 94 15.4 14.3 108 LITTLE WARM 9370 11.0 12.6 87 14.8 14.5 102 SOUTH PASS 9040 15.8 17.7 89 18.8 20.0 94 ST. LAWRENCE ALT 8620 7.4 7.5 99 9.0 9.9 91 TOGWOTEE PASS 9580 28.9 26.4 109 31.1 26.4 118 TOWNSEND CREEK 8700 9.7 9.7 100 13.2 13.0 102 ----- ----- Basin wide percent of average 99 102 BIGHORN BASIN BALD MTN. 9380 17.8 21.4 83 16.3 18.8 87 BEAR TRAP MEADOW 8200 9.8 4.9 200 9.8 9.1 108 BLACKWATER 9780 27.8 26.4 105 25.3 22.2 114 BONE SPRINGS DIV 9350 19.2 17.4 110 18.7 15.9 118 EVENING STAR 9200 32.2 31.7 102 35.5 27.1 131 GRAVE SPRINGS 8550 10.9 10.5 104 11.1 11.0 101 KIRWIN 9550 13.2 12.2 108 16.0 12.2 131 MARQUETTE 8760 8.3 10.2 81 10.7 11.1 96 MIDDLE POWDER 7760 12.5 13.6 92 10.0 13.5 74 OWL CREEK 8975 6.3 5.4 117 7.3 6.6 111 POWDER RIVER PASS 9480 13.2 11.8 112 15.4 13.5 114 SHELL CREEK 9580 17.0 15.9 107 16.4 14.5 113 SYLVAN LAKE 8420 23.1 24.0 96 27.9 22.4 125 SYLVAN ROAD 7120 14.3 12.7 113 22.8 18.8 121 TIMBER CREEK 7950 5.3 5.8 91 9.0 8.3 108 YOUNTS PEAK 8350 18.1 18.0 101 18.7 17.2 109 ----- ----- Basin wide percent of average 103 112 SHOSHONE RIVER BLACKWATER 9780 27.8 26.4 105 25.3 22.2 114 EVENING STAR 9200 32.2 31.7 102 35.5 27.1 131 KIRWIN 9550 13.2 12.2 108 16.0 12.2 131 MARQUETTE 8760 8.3 10.2 81 10.7 11.1 96 SYLVAN LAKE 8420 23.1 24.0 96 27.9 22.4 125 SYLVAN ROAD 7120 14.3 12.7 113 22.8 18.8 121 YOUNTS PEAK 8350 18.1 18.0 101 18.7 17.2 109 ----- ----- Basin wide percent of average 101 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.8 4.9 200 9.8 9.1 108 BIG GOOSE 7990 10.5 12.1 87 13.3 10.1 132 BONE SPRINGS DIV 9350 19.2 17.4 110 18.7 15.9 118 BURGESS JUNCTION 7880 14.0 12.9 109 15.3 13.3 115 CLOUD PEAK RESERVOIR 9860 17.3 14.9 116 16.7 14.3 117 DOME LAKE 8880 13.1 13.7 96 16.2 14.4 112 GRAVE SPRINGS 8550 10.9 10.5 104 11.1 11.0 101 HANSEN SAWMILL 8360 7.9 6.3 125 10.0 9.1 110 MIDDLE POWDER 7760 12.5 13.6 92 10.0 13.5 74 POWDER RIVER PASS 9480 13.2 11.8 112 15.4 13.5 114 SUCKER CREEK 8880 16.3 13.2 123 18.1 14.9 121 TIE CREEK 6870 8.9 5.5 162 13.1 11.1 118 ----- ----- Basin wide percent of average 112 112 BELLE FOURCHE BLIND PARK 6890 9.6 8.0 120 12.6 12.0 105 COLE CANYON 5910 7.7 7.2 107 9.2 7.4 124 NORTH RAPID CREEK 6130 10.6 8.9 119 10.9 9.3 117 ----- ----- Basin wide percent of average 116 114 UPPER N. PLATTE RIVER COLUMBINE 9160 30.6 24.9 123 30.9 26.8 115 DIVIDE PEAK 8880 26.7 20.8 128 26.3 22.1 119 ELK RIVER 8700 29.4 20.0 147 25.3 20.9 121 JOE WRIGHT 10120 27.2 23.2 117 29.7 26.7 111 NORTH FRENCH CREEK 10130 34.8 32.0 109 32.8 26.4 124 OLD BATTLE 10000 38.0 34.2 111 40.4 36.6 110 SAGE CREEK BASIN 7850 19.0 12.1 157 19.0 12.8 148 SOUTH BRUSH CREEK 8440 16.5 13.4 123 18.9 17.7 107 TOWER 10500 47.8 48.8 98 33.6 41.0 82 WEBBER SPRINGS 9250 30.7 26.2 117 33.9 28.5 119 WILLOW CREEK PASS 9540 19.3 13.3 145 18.4 13.9 132 ----- ----- Basin wide percent of average 119 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.0 25.9 93 24.8 23.9 104 CASPER MTN. 7900 15.9 16.3 98 16.1 16.2 99 DEADMAN HILL 10220 20.6 17.9 115 21.4 18.3 117 DEER PARK 9700 17.1 17.0 101 21.7 23.7 92 LAPRELE CREEK 8375 9.6 10.6 91 12.9 13.9 93 RENO HILL 8400 16.0 15.7 102 18.1 16.8 108 ROACH 9700 22.0 18.3 120 24.5 20.0 123 SAND LAKE 10050 33.2 34.6 96 32.7 26.0 126 SOUTH PASS 9040 15.8 17.7 89 18.8 20.0 94 WINDY PEAK 7900 10.2 8.3 123 11.6 11.5 101 ----- ----- Basin wide percent of average 101 106 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 18.3 9.3 197 18.2 16.9 108 DIVIDE PEAK 8880 26.7 20.8 128 26.3 22.1 119 OLD BATTLE 10000 38.0 34.2 111 40.4 36.6 110 SANDSTONE RS 8150 20.4 13.8 148 23.7 19.9 119 WHISKEY PARK 8950 37.1 30.7 121 37.7 30.5 124 ----- ----- Basin wide percent of average 129 116 UPPER GREEN RIVER BIG SANDY OPENING 9080 14.2 15.3 93 14.1 14.3 99 BLIND BULL SUM 8650 27.1 28.9 94 19.1 23.6 81 EAST RIM DIVIDE 7930 10.1 13.9 73 11.9 12.8 93 ELKHART PARK G.S. 9400 11.7 14.0 84 12.3 14.3 86 GROS VENTRE SUMMIT 8750 13.6 14.6 93 15.0 13.8 109 GUNSIGHT PASS 9820 12.7 -M * 15.2 -M * KENDALL R.S. 7740 13.2 13.9 95 14.7 15.4 95 LOOMIS PARK 8240 17.2 17.3 99 18.8 18.4 102 NEW FORK LAKE 8340 10.2 11.5 89 9.9 12.1 82 SNIDER BASIN 8060 14.6 15.0 97 15.3 17.2 89 SPRING CREEK DIVIDE 9000 23.3 28.3 82 25.3 28.1 90 TRIPLE PEAK 8500 27.4 25.9 106 30.5 26.4 116 ----- ----- Basin wide percent of average 92 95 LOWER GREEN RIVER HAMS FORK 7840 13.5 10.5 129 11.1 13.1 85 HEWINTA 9519 17.8 12.5 142 18.5 15.9 116 HICKERSON PARK 9145 8.8 8.4 105 10.9 8.7 125 HOLE-IN-ROCK 9150 7.8 7.4 105 11.6 8.3 140 INDIAN CREEK 9425 27.9 29.5 95 -M 27.2 * KELLEY R.S. 8180 16.1 17.4 93 19.0 21.7 88 STEEL CREEK PARK 10200 18.0 17.0 106 20.7 17.9 116 ----- ----- Basin wide percent of average 107 107 UPPER BEAR RIVER BUG LAKE 7950 19.1 21.8 88 18.0 20.5 88 HAYDEN FORK 9212 22.3 16.8 133 24.9 22.7 110 KELLEY R.S. 8180 16.1 17.4 93 19.0 21.7 88 LILY LAKE 9156 17.1 14.6 117 19.5 19.0 103 MONTE CRISTO 8960 31.3 30.6 102 28.0 27.3 103 SALT RIVER SUMMIT 7760 14.6 14.7 99 17.0 20.0 85 TRIAL LAKE 9992 24.0 26.2 92 26.3 26.7 99 ----- ----- Basin wide percent of average 102 97 ----------------------------------------------------------------------------- -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 1961-90. 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.