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 24 , 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 14.6 * -M 23.8 * COTTONWOOD CREEK 7670 26.0 21.9 119 27.3 30.9 88 GRAND TARGHEE 9260 52.9 -M * 37.0 -M * GRANITE CREEK 6770 18.0 14.9 121 24.6 21.8 113 GRASSY LAKE 7265 39.1 35.6 110 46.3 39.9 116 GROS VENTRE SUMMIT 8750 13.2 14.2 93 15.2 14.7 103 GUNSIGHT PASS 9820 13.0 -M * 15.5 -M * LEWIS LAKE DIVIDE 7850 39.0 36.0 108 40.4 40.7 99 PHILLIPS BENCH 8200 35.8 30.5 117 37.5 32.2 116 SALT RIVER SUMMIT 7760 13.2 12.7 104 17.4 21.0 83 SNAKE RIVER STATION 6920 20.0 14.9 134 29.5 24.9 118 SPRING CREEK DIVIDE 9000 23.1 28.9 80 25.6 29.5 87 THUMB DIVIDE 7980 19.6 16.9 116 22.6 21.3 106 TOGWOTEE PASS 9580 29.6 27.5 108 32.1 28.0 115 TWO OCEAN PLATEAU 9240 41.6 31.5 132 34.9 31.1 112 WILLOW CREEK 8380 33.8 31.7 107 41.4 36.4 114 ----- ----- Basin wide percent of average 111 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.4 25.6 107 26.1 22.7 115 BLACK BEAR 8170 46.5 40.6 115 46.1 44.8 103 CANYON 7870 18.7 12.5 150 22.5 17.2 131 FISHER CREEK 9100 44.5 37.6 118 41.7 40.7 102 MADISON PLATEAU 7750 33.1 25.4 130 34.8 29.8 117 NORTHEAST ENTRANCE 7350 10.2 8.7 117 14.8 14.3 103 PARKER PEAK 9400 30.0 24.0 125 -M 18.7 * SYLVAN LAKE 8420 23.2 23.9 97 29.0 23.8 122 THUMB DIVIDE 7980 19.6 16.9 116 22.6 21.3 106 TWO OCEAN PLATEAU 9240 41.6 31.5 132 34.9 31.1 112 WHISKEY CREEK 6800 19.9 16.7 119 26.7 23.5 114 WHITE MILL 8700 30.3 26.3 115 30.2 30.2 100 WOLVERINE 7650 10.1 8.8 115 15.3 14.6 105 ----- ----- Basin wide percent of average 119 110 WIND RIVER BURROUGHS CREEK 8750 16.9 14.5 117 20.1 18.6 108 COLD SPRINGS 9630 5.8 5.2 112 11.1 13.1 85 DEER PARK 9700 16.3 19.2 85 21.9 25.7 85 HOBBS PARK 10100 15.1 17.5 86 16.5 15.9 104 LITTLE WARM 9370 10.5 11.8 89 15.2 15.9 96 SOUTH PASS 9040 15.1 17.8 85 18.9 21.6 87 ST. LAWRENCE ALT 8620 6.1 6.4 95 9.1 11.2 81 TOGWOTEE PASS 9580 29.6 27.5 108 32.1 28.0 115 TOWNSEND CREEK 8700 8.7 9.6 91 13.2 14.6 90 ----- ----- Basin wide percent of average 96 96 BIGHORN BASIN BALD MTN. 9380 18.2 22.8 80 17.3 20.3 85 BEAR TRAP MEADOW 8200 7.4 3.2 231 10.0 10.2 98 BLACKWATER 9780 28.8 27.6 104 26.5 23.8 111 BONE SPRINGS DIV 9350 19.5 17.8 110 19.6 17.4 113 EVENING STAR 9200 33.0 32.5 102 37.3 28.9 129 GRAVE SPRINGS 8550 10.5 11.0 95 11.3 12.4 91 KIRWIN 9550 13.7 12.6 109 16.0 13.4 119 MARQUETTE 8760 8.4 10.7 79 11.2 12.7 88 MIDDLE POWDER 7760 12.9 14.2 91 10.6 14.9 71 OWL CREEK 8975 2.9 4.2 69 7.5 7.6 99 POWDER RIVER PASS 9480 12.9 11.4 113 15.8 14.9 106 SHELL CREEK 9580 17.8 16.4 109 17.1 15.9 108 SYLVAN LAKE 8420 23.2 23.9 97 29.0 23.8 122 SYLVAN ROAD 7120 12.7 9.7 131 23.0 19.8 116 TIMBER CREEK 7950 4.9 5.0 98 9.0 9.6 94 YOUNTS PEAK 8350 18.3 18.1 101 19.2 18.2 105 ----- ----- Basin wide percent of average 102 106 SHOSHONE RIVER BLACKWATER 9780 28.8 27.6 104 26.5 23.8 111 EVENING STAR 9200 33.0 32.5 102 37.3 28.9 129 KIRWIN 9550 13.7 12.6 109 16.0 13.4 119 MARQUETTE 8760 8.4 10.7 79 11.2 12.7 88 SYLVAN LAKE 8420 23.2 23.9 97 29.0 23.8 122 SYLVAN ROAD 7120 12.7 9.7 131 23.0 19.8 116 YOUNTS PEAK 8350 18.3 18.1 101 19.2 18.2 105 ----- ----- Basin wide percent of average 102 115 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.4 3.2 231 10.0 10.2 98 BIG GOOSE 7990 10.2 12.4 82 14.1 12.0 118 BONE SPRINGS DIV 9350 19.5 17.8 110 19.6 17.4 113 BURGESS JUNCTION 7880 14.5 13.2 110 16.0 14.6 110 CLOUD PEAK RESERVOIR 9860 17.1 15.9 108 17.5 16.0 109 DOME LAKE 8880 12.8 13.5 95 17.1 15.9 108 GRAVE SPRINGS 8550 10.5 11.0 95 11.3 12.4 91 HANSEN SAWMILL 8360 5.6 5.2 108 10.5 10.2 103 MIDDLE POWDER 7760 12.9 14.2 91 10.6 14.9 71 POWDER RIVER PASS 9480 12.9 11.4 113 15.8 14.9 106 SUCKER CREEK 8880 16.0 13.3 120 19.1 16.4 116 TIE CREEK 6870 7.7 5.2 148 13.5 12.5 108 ----- ----- Basin wide percent of average 108 105 BELLE FOURCHE BLIND PARK 6890 6.2 5.9 105 12.7 13.3 95 COLE CANYON 5910 5.7 6.3 90 9.4 8.6 109 NORTH RAPID CREEK 6130 8.4 6.8 124 11.1 10.5 106 ----- ----- Basin wide percent of average 107 102 UPPER N. PLATTE RIVER COLUMBINE 9160 26.5 23.1 115 31.4 28.3 111 DIVIDE PEAK 8880 23.8 20.6 116 26.2 23.4 112 ELK RIVER 8700 23.0 17.7 130 25.6 22.2 115 JOE WRIGHT 10120 27.0 24.7 109 31.5 28.8 109 NORTH FRENCH CREEK 10130 33.0 34.0 97 33.1 28.4 117 OLD BATTLE 10000 37.4 36.0 104 44.0 38.7 114 SAGE CREEK BASIN 7850 16.9 11.9 142 19.2 13.6 141 SOUTH BRUSH CREEK 8440 12.2 12.4 98 19.3 19.2 101 TOWER 10500 47.5 51.4 92 -M 43.6 * WEBBER SPRINGS 9250 28.5 26.0 110 34.4 30.2 114 WILLOW CREEK PASS 9540 20.3 14.2 143 18.8 15.0 125 ----- ----- Basin wide percent of average 109 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.1 27.9 83 25.2 25.8 98 CASPER MTN. 7900 14.0 17.6 80 16.5 18.3 90 DEADMAN HILL 10220 19.4 19.3 101 22.0 20.0 110 DEER PARK 9700 16.3 19.2 85 21.9 25.7 85 LAPRELE CREEK 8375 7.2 8.7 83 13.3 15.4 86 RENO HILL 8400 14.2 15.8 90 18.5 18.9 98 ROACH 9700 20.8 18.6 112 25.1 21.5 117 SAND LAKE 10050 32.1 36.3 88 33.0 28.1 117 SOUTH PASS 9040 15.1 17.8 85 18.9 21.6 87 WINDY PEAK 7900 8.3 6.5 128 11.7 12.7 92 ----- ----- Basin wide percent of average 91 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 10.8 6.5 166 18.4 18.0 102 DIVIDE PEAK 8880 23.8 20.6 116 26.2 23.4 112 OLD BATTLE 10000 37.4 36.0 104 44.0 38.7 114 SANDSTONE RS 8150 16.1 11.6 139 23.6 21.1 112 WHISKEY PARK 8950 38.3 30.7 125 39.1 32.6 120 ----- ----- Basin wide percent of average 120 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.1 14.7 89 14.3 15.3 93 BLIND BULL SUM 8650 27.9 28.6 98 19.3 24.6 78 EAST RIM DIVIDE 7930 9.4 13.9 68 12.0 13.4 90 ELKHART PARK G.S. 9400 11.4 13.7 83 12.7 15.3 83 GROS VENTRE SUMMIT 8750 13.2 14.2 93 15.2 14.7 103 GUNSIGHT PASS 9820 13.0 -M * 15.5 -M * KENDALL R.S. 7740 11.2 12.0 93 14.7 16.1 91 LOOMIS PARK 8240 15.7 15.8 99 19.2 19.3 99 NEW FORK LAKE 8340 9.0 10.1 89 10.2 12.9 79 SNIDER BASIN 8060 13.5 14.1 96 15.4 18.1 85 SPRING CREEK DIVIDE 9000 23.1 28.9 80 25.6 29.5 87 TRIPLE PEAK 8500 25.6 25.3 101 31.0 27.8 112 ----- ----- Basin wide percent of average 90 92 LOWER GREEN RIVER HAMS FORK 7840 11.0 7.9 139 11.3 14.1 80 HEWINTA 9519 14.7 11.0 134 18.8 17.1 110 HICKERSON PARK 9145 6.4 7.2 89 11.1 9.6 116 HOLE-IN-ROCK 9150 6.2 6.1 102 11.6 9.2 126 INDIAN CREEK 9425 27.1 29.4 92 -M 28.6 * KELLEY R.S. 8180 15.6 15.9 98 19.3 22.9 84 STEEL CREEK PARK 10200 18.7 18.1 103 20.8 19.4 107 ----- ----- Basin wide percent of average 104 101 UPPER BEAR RIVER BUG LAKE 7950 17.9 20.3 88 18.4 21.7 85 HAYDEN FORK 9212 17.2 15.0 115 25.5 24.2 105 KELLEY R.S. 8180 15.6 15.9 98 19.3 22.9 84 LILY LAKE 9156 15.6 13.0 120 20.0 20.4 98 MONTE CRISTO 8960 31.2 29.8 105 28.4 29.2 97 SALT RIVER SUMMIT 7760 13.2 12.7 104 17.4 21.0 83 TRIAL LAKE 9992 24.2 26.6 91 26.5 28.4 93 ----- ----- Basin wide percent of average 101 93 ----------------------------------------------------------------------------- -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.