Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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 25 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.1 14.6 76 21.6 23.8 91 COTTONWOOD CREEK 7670 26.9 21.9 123 35.3 30.9 114 GRAND TARGHEE 9260 50.5 -M * 39.1 -M * GRANITE CREEK 6770 13.6 14.9 91 23.4 21.8 107 GRASSY LAKE 7265 31.0 35.6 87 38.4 39.9 96 GROS VENTRE SUMMIT 8750 -M 14.2 * 17.5 14.7 119 GUNSIGHT PASS 9820 15.9 -M * 18.1 -M * LEWIS LAKE DIVIDE 7850 33.2 36.0 92 36.7 40.7 90 PHILLIPS BENCH 8200 29.4 30.5 96 33.3 32.2 103 SALT RIVER SUMMIT 7760 13.6 12.7 107 18.6 21.0 89 SNAKE RIVER STATION 6920 13.1 14.9 88 25.0 24.9 100 SPRING CREEK DIVIDE 9000 31.5 28.9 109 30.5 29.5 103 THUMB DIVIDE 7980 19.4 16.9 115 24.0 21.3 113 TOGWOTEE PASS 9580 30.0 27.5 109 33.2 28.0 119 TWO OCEAN PLATEAU 9240 41.6 31.5 132 32.9 31.1 106 WILLOW CREEK 8380 33.9 31.7 107 44.5 36.4 122 ----- ----- Basin wide percent of average 103 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 24.5 25.6 96 23.1 22.7 102 BLACK BEAR 8170 37.1 40.6 91 39.2 44.8 88 CANYON 7870 13.1 12.5 105 16.8 17.2 98 FISHER CREEK 9100 38.7 37.6 103 38.4 40.7 94 MADISON PLATEAU 7750 23.6 25.4 93 26.9 29.8 90 NORTHEAST ENTRANCE 7350 5.7 8.7 66 15.1 14.3 106 PARKER PEAK 9400 30.6 24.0 128 21.3 18.7 114 SYLVAN LAKE 8420 20.3 23.9 85 26.1 23.8 110 THUMB DIVIDE 7980 19.4 16.9 115 24.0 21.3 113 TWO OCEAN PLATEAU 9240 41.6 31.5 132 32.9 31.1 106 WHISKEY CREEK 6800 17.3 16.7 104 22.6 23.5 96 WHITE MILL 8700 26.0 26.3 99 26.3 30.2 87 WOLVERINE 7650 8.9 8.8 101 13.8 14.6 95 ----- ----- Basin wide percent of average 103 98 WIND RIVER BURROUGHS CREEK 8750 17.0 14.5 117 18.7 18.6 101 COLD SPRINGS 9630 7.8 5.2 150 12.8 13.1 98 DEER PARK 9700 14.1 19.2 73 20.6 25.7 80 HOBBS PARK 10100 16.1 17.5 92 17.7 15.9 111 LITTLE WARM 9370 11.6 11.8 98 16.8 15.9 106 SOUTH PASS 9040 14.4 17.8 81 18.0 21.6 83 ST. LAWRENCE ALT 8620 6.2 6.4 97 12.3 11.2 110 TOGWOTEE PASS 9580 30.0 27.5 109 33.2 28.0 119 TOWNSEND CREEK 8700 10.1 9.6 105 15.3 14.6 105 ----- ----- Basin wide percent of average 98 100 BIGHORN BASIN BALD MTN. 9380 19.2 22.8 84 16.7 20.3 82 BEAR TRAP MEADOW 8200 5.4 3.2 169 10.8 10.2 106 BLACKWATER 9780 28.3 27.6 103 26.1 23.8 110 BONE SPRINGS DIV 9350 16.7 17.8 94 15.8 17.4 91 EVENING STAR 9200 31.0 32.5 95 34.6 28.9 120 GRAVE SPRINGS 8550 9.2 11.0 84 11.5 12.4 93 KIRWIN 9550 14.1 12.6 112 16.7 13.4 125 MARQUETTE 8760 6.9 10.7 64 10.6 12.7 83 MIDDLE POWDER 7760 11.3 14.2 80 11.7 14.9 79 OWL CREEK 8975 3.8 4.2 90 8.3 7.6 109 POWDER RIVER PASS 9480 11.4 11.4 100 16.6 14.9 111 SHELL CREEK 9580 17.4 16.4 106 17.3 15.9 109 SYLVAN LAKE 8420 20.3 23.9 85 26.1 23.8 110 SYLVAN ROAD 7120 7.8 9.7 80 21.5 19.8 109 TIMBER CREEK 7950 3.4 5.0 68 9.8 9.6 102 YOUNTS PEAK 8350 19.4 18.1 107 18.0 18.2 99 ----- ----- Basin wide percent of average 94 103 SHOSHONE RIVER BLACKWATER 9780 28.3 27.6 103 26.1 23.8 110 EVENING STAR 9200 31.0 32.5 95 34.6 28.9 120 KIRWIN 9550 14.1 12.6 112 16.7 13.4 125 MARQUETTE 8760 6.9 10.7 64 10.6 12.7 83 SYLVAN LAKE 8420 20.3 23.9 85 26.1 23.8 110 SYLVAN ROAD 7120 7.8 9.7 80 21.5 19.8 109 YOUNTS PEAK 8350 19.4 18.1 107 18.0 18.2 99 ----- ----- Basin wide percent of average 95 109 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.4 3.2 169 10.8 10.2 106 BIG GOOSE 7990 10.5 12.4 85 15.0 12.0 125 BONE SPRINGS DIV 9350 16.7 17.8 94 15.8 17.4 91 BURGESS JUNCTION 7880 12.9 13.2 98 14.6 14.6 100 CLOUD PEAK RESERVOIR 9860 19.0 15.9 119 19.5 16.0 122 DOME LAKE 8880 12.6 13.5 93 17.7 15.9 111 GRAVE SPRINGS 8550 9.2 11.0 84 11.5 12.4 93 HANSEN SAWMILL 8360 4.3 5.2 83 11.9 10.2 117 MIDDLE POWDER 7760 11.3 14.2 80 11.7 14.9 79 POWDER RIVER PASS 9480 11.4 11.4 100 16.6 14.9 111 SUCKER CREEK 8880 15.2 13.3 114 19.3 16.4 118 TIE CREEK 6870 3.8 5.2 73 16.3 12.5 130 ----- ----- Basin wide percent of average 97 108 BELLE FOURCHE BLIND PARK 6890 -M 5.9 * 16.3 13.3 123 COLE CANYON 5910 4.8 6.3 76 13.8 8.6 160 NORTH RAPID CREEK 6130 4.0 6.8 59 16.1 10.5 153 ----- ----- Basin wide percent of average 67 143 UPPER N. PLATTE RIVER COLUMBINE 9160 23.5 23.1 102 30.4 28.3 107 DIVIDE PEAK 8880 26.1 20.6 127 30.5 23.4 130 ELK RIVER 8700 18.0 17.7 102 24.6 22.2 111 JOE WRIGHT 10120 26.2 24.7 106 32.2 28.8 112 NORTH FRENCH CREEK 10130 37.1 34.0 109 35.6 28.4 125 OLD BATTLE 10000 38.4 36.0 107 44.2 38.7 114 SAGE CREEK BASIN 7850 12.6 11.9 106 17.0 13.6 125 SOUTH BRUSH CREEK 8440 10.2 12.4 82 19.9 19.2 104 TOWER 10500 48.3 51.4 94 47.0 43.6 108 WEBBER SPRINGS 9250 26.8 26.0 103 33.7 30.2 112 WILLOW CREEK PASS 9540 13.9 14.2 98 14.5 15.0 97 ----- ----- Basin wide percent of average 103 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.6 27.9 92 25.5 25.8 99 CASPER MTN. 7900 13.3 17.6 76 16.0 18.3 87 DEADMAN HILL 10220 20.9 19.3 108 21.8 20.0 109 DEER PARK 9700 14.1 19.2 73 20.6 25.7 80 LAPRELE CREEK 8375 8.9 8.7 102 15.5 15.4 101 RENO HILL 8400 15.5 15.8 98 19.7 18.9 104 ROACH 9700 18.2 18.6 98 22.2 21.5 103 SAND LAKE 10050 34.9 36.3 96 33.8 28.1 120 SOUTH PASS 9040 14.4 17.8 81 18.0 21.6 83 WINDY PEAK 7900 9.1 6.5 140 13.3 12.7 105 ----- ----- Basin wide percent of average 93 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 9.0 6.5 138 20.7 18.0 115 DIVIDE PEAK 8880 26.1 20.6 127 30.5 23.4 130 OLD BATTLE 10000 38.4 36.0 107 44.2 38.7 114 SANDSTONE RS 8150 16.5 11.6 142 23.3 21.1 110 WHISKEY PARK 8950 32.4 30.7 106 38.1 32.6 117 ----- ----- Basin wide percent of average 116 117 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.5 14.7 85 14.9 15.3 97 BLIND BULL SUM 8650 29.8 28.6 104 23.3 24.6 95 EAST RIM DIVIDE 7930 6.4 13.9 46 13.7 13.4 102 ELKHART PARK G.S. 9400 14.2 13.7 104 17.1 15.3 112 GROS VENTRE SUMMIT 8750 -M 14.2 * 17.5 14.7 119 GUNSIGHT PASS 9820 15.9 -M * 18.1 -M * KENDALL R.S. 7740 6.9 12.0 58 15.3 16.1 95 LOOMIS PARK 8240 13.9 15.8 88 20.9 19.3 108 NEW FORK LAKE 8340 9.3 10.1 92 12.5 12.9 97 SNIDER BASIN 8060 13.9 14.1 99 17.0 18.1 94 SPRING CREEK DIVIDE 9000 31.5 28.9 109 30.5 29.5 103 TRIPLE PEAK 8500 23.6 25.3 93 30.1 27.8 108 ----- ----- Basin wide percent of average 91 103 LOWER GREEN RIVER HAMS FORK 7840 8.7 7.9 110 14.5 14.1 103 HEWINTA 9519 7.0 11.0 64 15.9 17.1 93 HICKERSON PARK 9145 4.7 7.2 65 12.1 9.6 126 HOLE-IN-ROCK 9150 4.5 6.1 74 11.3 9.2 123 INDIAN CREEK 9425 -M 29.4 * 25.6 28.6 90 KELLEY R.S. 8180 15.2 15.9 96 20.7 22.9 90 STEEL CREEK PARK 10200 16.3 18.1 90 19.3 19.4 99 ----- ----- Basin wide percent of average 85 99 UPPER BEAR RIVER BUG LAKE 7950 18.4 20.3 91 20.6 21.7 95 HAYDEN FORK 9212 13.4 15.0 89 25.5 24.2 105 KELLEY R.S. 8180 15.2 15.9 96 20.7 22.9 90 LILY LAKE 9156 12.6 13.0 97 20.0 20.4 98 MONTE CRISTO 8960 27.9 29.8 94 30.5 29.2 104 SALT RIVER SUMMIT 7760 13.6 12.7 107 18.6 21.0 89 TRIAL LAKE 9992 26.8 26.6 101 27.4 28.4 96 ----- ----- Basin wide percent of average 96 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.