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 THURSDAY: APRIL 10 , 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 17.6 * -M 22.5 * COTTONWOOD CREEK 7670 26.7 24.3 110 26.5 29.0 91 GRAND TARGHEE 9260 50.7 -M * 35.1 -M * GRANITE CREEK 6770 19.5 17.8 110 24.4 20.7 118 GRASSY LAKE 7265 38.7 37.1 104 44.8 37.8 119 GROS VENTRE SUMMIT 8750 13.7 14.6 94 15.0 13.7 109 GUNSIGHT PASS 9820 12.9 -M * 15.2 -M * LEWIS LAKE DIVIDE 7850 37.8 36.6 103 39.8 38.6 103 PHILLIPS BENCH 8200 35.5 30.3 117 36.9 30.6 121 SALT RIVER SUMMIT 7760 14.6 14.8 99 17.0 19.9 85 SNAKE RIVER STATION 6920 21.4 18.5 116 29.0 23.5 123 SPRING CREEK DIVIDE 9000 23.5 28.1 84 25.3 27.9 91 THUMB DIVIDE 7980 20.2 19.2 105 21.9 20.0 110 TOGWOTEE PASS 9580 28.7 26.2 110 31.0 26.1 119 TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 * WILLOW CREEK 8380 35.3 31.6 112 40.2 34.1 118 ----- ----- Basin wide percent of average 106 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.7 24.9 107 25.3 21.2 119 BLACK BEAR 8170 47.8 40.6 118 41.9 42.5 99 CANYON 7870 18.8 14.1 133 22.0 16.2 136 FISHER CREEK 9100 43.3 36.6 118 39.0 38.3 102 MADISON PLATEAU 7750 31.1 26.0 120 33.2 28.3 117 NORTHEAST ENTRANCE 7350 -M 11.0 * -M 13.4 * PARKER PEAK 9400 28.3 23.0 123 25.7 17.3 149 SYLVAN LAKE 8420 23.0 23.8 97 27.8 22.1 126 THUMB DIVIDE 7980 20.2 19.2 105 21.9 20.0 110 TWO OCEAN PLATEAU 9240 -M 29.9 * -M 29.2 * WHISKEY CREEK 6800 19.5 17.8 110 25.8 22.2 116 WHITE MILL 8700 29.6 25.5 116 28.3 28.5 99 WOLVERINE 7650 11.8 11.6 102 14.9 13.5 110 ----- ----- Basin wide percent of average 114 113 WIND RIVER BURROUGHS CREEK 8750 16.8 15.1 111 19.8 17.2 115 COLD SPRINGS 9630 7.6 8.2 93 10.9 11.6 94 DEER PARK 9700 16.5 17.3 95 21.1 23.4 90 HOBBS PARK 10100 15.1 16.2 93 15.0 14.0 107 LITTLE WARM 9370 11.0 12.4 89 14.8 14.3 103 SOUTH PASS 9040 15.3 17.5 87 18.2 19.7 92 ST. LAWRENCE ALT 8620 7.1 7.5 95 8.8 9.7 91 TOGWOTEE PASS 9580 28.7 26.2 110 31.0 26.1 119 TOWNSEND CREEK 8700 9.5 9.6 99 12.6 12.7 99 ----- ----- Basin wide percent of average 98 102 BIGHORN BASIN BALD MTN. 9380 17.6 21.1 83 16.1 18.5 87 BEAR TRAP MEADOW 8200 9.8 5.0 196 9.8 9.0 109 BLACKWATER 9780 27.7 26.1 106 25.2 21.9 115 BONE SPRINGS DIV 9350 18.6 17.2 108 18.5 15.7 118 EVENING STAR 9200 32.1 31.6 102 35.5 26.8 132 GRAVE SPRINGS 8550 10.7 10.3 104 10.9 10.7 102 KIRWIN 9550 13.3 12.1 110 16.2 12.1 134 MARQUETTE 8760 7.9 10.0 79 10.6 10.8 98 MIDDLE POWDER 7760 12.3 13.2 93 9.9 13.3 74 OWL CREEK 8975 6.1 5.6 109 7.3 6.5 112 POWDER RIVER PASS 9480 13.2 11.6 114 15.4 13.3 116 SHELL CREEK 9580 17.0 15.7 108 16.3 14.3 114 SYLVAN LAKE 8420 23.0 23.8 97 27.8 22.1 126 SYLVAN ROAD 7120 14.1 12.7 111 22.7 18.6 122 TIMBER CREEK 7950 4.7 5.8 81 8.3 8.1 102 YOUNTS PEAK 8350 18.2 17.9 102 18.6 17.1 109 ----- ----- Basin wide percent of average 103 113 SHOSHONE RIVER BLACKWATER 9780 27.7 26.1 106 25.2 21.9 115 EVENING STAR 9200 32.1 31.6 102 35.5 26.8 132 KIRWIN 9550 13.3 12.1 110 16.2 12.1 134 MARQUETTE 8760 7.9 10.0 79 10.6 10.8 98 SYLVAN LAKE 8420 23.0 23.8 97 27.8 22.1 126 SYLVAN ROAD 7120 14.1 12.7 111 22.7 18.6 122 YOUNTS PEAK 8350 18.2 17.9 102 18.6 17.1 109 ----- ----- Basin wide percent of average 102 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.8 5.0 196 9.8 9.0 109 BIG GOOSE 7990 10.1 11.9 85 12.9 9.8 132 BONE SPRINGS DIV 9350 18.6 17.2 108 18.5 15.7 118 BURGESS JUNCTION 7880 13.2 12.7 104 14.6 13.1 111 CLOUD PEAK RESERVOIR 9860 16.6 14.6 114 16.1 14.0 115 DOME LAKE 8880 12.7 13.4 95 16.0 14.2 113 GRAVE SPRINGS 8550 10.7 10.3 104 10.9 10.7 102 HANSEN SAWMILL 8360 7.9 6.4 123 10.1 8.9 113 MIDDLE POWDER 7760 12.3 13.2 93 9.9 13.3 74 POWDER RIVER PASS 9480 13.2 11.6 114 15.4 13.3 116 SUCKER CREEK 8880 15.6 12.9 121 17.5 14.6 120 TIE CREEK 6870 8.4 5.8 145 12.6 10.8 117 ----- ----- Basin wide percent of average 110 111 BELLE FOURCHE BLIND PARK 6890 8.6 7.9 109 11.5 11.8 97 COLE CANYON 5910 6.8 7.2 94 8.3 7.2 115 NORTH RAPID CREEK 6130 9.3 8.9 104 9.7 9.1 107 ----- ----- Basin wide percent of average 103 105 UPPER N. PLATTE RIVER COLUMBINE 9160 29.8 25.0 119 30.1 26.5 114 DIVIDE PEAK 8880 25.0 20.7 121 24.8 21.8 114 ELK RIVER 8700 28.4 20.1 141 24.5 20.7 118 JOE WRIGHT 10120 25.8 22.9 113 29.2 26.4 111 NORTH FRENCH CREEK 10130 33.5 31.6 106 31.5 26.1 121 OLD BATTLE 10000 36.1 33.9 106 40.5 36.3 112 SAGE CREEK BASIN 7850 18.2 12.0 152 18.5 12.7 146 SOUTH BRUSH CREEK 8440 15.6 13.4 116 18.0 17.5 103 TOWER 10500 46.9 48.3 97 33.6 40.5 83 WEBBER SPRINGS 9250 28.5 26.3 108 31.8 28.2 113 WILLOW CREEK PASS 9540 18.0 13.1 137 17.2 13.7 126 ----- ----- Basin wide percent of average 114 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.1 25.6 90 23.6 23.6 100 CASPER MTN. 7900 13.9 16.0 87 14.5 15.8 92 DEADMAN HILL 10220 19.3 17.7 109 19.8 18.1 109 DEER PARK 9700 16.5 17.3 95 21.1 23.4 90 LAPRELE CREEK 8375 8.6 10.8 80 11.7 13.6 86 RENO HILL 8400 14.4 15.5 93 16.2 16.5 98 ROACH 9700 20.9 18.2 115 23.5 19.8 119 SAND LAKE 10050 31.2 34.2 91 30.6 25.7 119 SOUTH PASS 9040 15.3 17.5 87 18.2 19.7 92 WINDY PEAK 7900 9.2 8.4 110 10.6 11.3 94 ----- ----- Basin wide percent of average 95 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.7 9.7 182 17.8 16.8 106 DIVIDE PEAK 8880 25.0 20.7 121 24.8 21.8 114 OLD BATTLE 10000 36.1 33.9 106 40.5 36.3 112 SANDSTONE RS 8150 19.2 14.1 136 22.8 19.7 116 WHISKEY PARK 8950 35.9 30.7 117 37.8 30.2 125 ----- ----- Basin wide percent of average 123 115 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.9 15.2 91 13.9 14.1 99 BLIND BULL SUM 8650 27.2 28.9 94 19.1 23.4 82 EAST RIM DIVIDE 7930 10.0 13.8 72 12.0 12.7 94 ELKHART PARK G.S. 9400 11.8 14.0 84 12.3 14.2 87 GROS VENTRE SUMMIT 8750 13.7 14.6 94 15.0 13.7 109 GUNSIGHT PASS 9820 12.9 -M * 15.2 -M * KENDALL R.S. 7740 13.4 14.1 95 14.8 15.2 97 LOOMIS PARK 8240 17.3 17.4 99 18.9 18.3 103 NEW FORK LAKE 8340 10.2 11.5 89 10.0 12.0 83 SNIDER BASIN 8060 14.5 15.0 97 15.3 17.1 89 SPRING CREEK DIVIDE 9000 23.5 28.1 84 25.3 27.9 91 TRIPLE PEAK 8500 27.4 25.8 106 30.4 26.1 116 ----- ----- Basin wide percent of average 92 96 LOWER GREEN RIVER HAMS FORK 7840 13.5 10.8 125 11.1 13.0 85 HEWINTA 9519 17.5 12.5 140 18.5 15.6 119 HICKERSON PARK 9145 8.8 8.4 105 11.1 8.6 129 HOLE-IN-ROCK 9150 7.7 7.5 103 11.5 8.1 142 INDIAN CREEK 9425 27.7 29.3 95 -M 27.0 * KELLEY R.S. 8180 16.3 17.4 94 19.1 21.5 89 STEEL CREEK PARK 10200 17.7 16.8 105 20.4 17.6 116 ----- ----- Basin wide percent of average 106 109 UPPER BEAR RIVER BUG LAKE 7950 19.0 21.8 87 17.8 20.3 88 HAYDEN FORK 9212 22.0 16.8 131 24.5 22.4 109 KELLEY R.S. 8180 16.3 17.4 94 19.1 21.5 89 LILY LAKE 9156 16.8 14.6 115 19.0 18.8 101 MONTE CRISTO 8960 30.9 30.6 101 27.3 27.0 101 SALT RIVER SUMMIT 7760 14.6 14.8 99 17.0 19.9 85 TRIAL LAKE 9992 23.8 26.1 91 25.7 26.4 97 ----- ----- Basin wide percent of average 101 96 ----------------------------------------------------------------------------- -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.