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 FRIDAY: MAY 1 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 10.1 12.6 80 22.3 24.3 92 COTTONWOOD CREEK 7670 -M 20.1 * -M 31.8 * GRAND TARGHEE 9260 52.9 -M * 40.4 -M * GRANITE CREEK 6770 12.2 13.2 92 23.7 22.3 106 GRASSY LAKE 7265 32.2 33.7 96 40.0 40.7 98 GROS VENTRE SUMMIT 8750 13.0 13.4 97 18.1 15.2 119 GUNSIGHT PASS 9820 17.1 -M * 19.2 -M * LEWIS LAKE DIVIDE 7850 35.3 34.8 101 38.3 41.5 92 PHILLIPS BENCH 8200 30.6 29.6 103 34.1 33.0 103 SALT RIVER SUMMIT 7760 13.7 11.0 125 19.4 21.5 90 SNAKE RIVER STATION 6920 13.1 12.6 104 26.5 25.4 104 SPRING CREEK DIVIDE 9000 32.2 28.7 112 31.2 30.1 104 THUMB DIVIDE 7980 20.4 15.3 133 25.2 21.9 115 TOGWOTEE PASS 9580 31.3 27.9 112 34.3 28.8 119 TWO OCEAN PLATEAU 9240 44.2 31.8 139 34.3 32.0 107 WILLOW CREEK 8380 35.2 30.9 114 45.8 37.5 122 ----- ----- Basin wide percent of average 109 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.5 25.9 102 24.5 23.4 105 BLACK BEAR 8170 40.2 40.1 100 41.3 45.7 90 CANYON 7870 14.7 11.5 128 18.5 17.6 105 FISHER CREEK 9100 39.9 37.8 106 39.8 41.7 95 MADISON PLATEAU 7750 25.6 24.4 105 29.3 30.3 97 NORTHEAST ENTRANCE 7350 5.8 7.4 78 15.8 14.7 107 PARKER PEAK 9400 32.0 24.5 131 22.5 19.4 116 SYLVAN LAKE 8420 21.9 23.9 92 27.7 24.6 113 THUMB DIVIDE 7980 20.4 15.3 133 25.2 21.9 115 TWO OCEAN PLATEAU 9240 44.2 31.8 139 34.3 32.0 107 WHISKEY CREEK 6800 18.7 15.4 121 24.3 24.1 101 WHITE MILL 8700 27.3 26.4 103 27.5 31.1 88 WOLVERINE 7650 9.6 7.4 130 14.9 15.1 99 ----- ----- Basin wide percent of average 112 101 WIND RIVER BURROUGHS CREEK 8750 18.4 13.8 133 20.3 19.2 106 COLD SPRINGS 9630 9.7 4.9 198 14.8 13.8 107 DEER PARK 9700 15.3 19.0 81 21.9 26.8 82 HOBBS PARK 10100 18.6 18.0 103 20.0 16.8 119 LITTLE WARM 9370 13.5 11.3 119 18.6 16.7 111 SOUTH PASS 9040 15.6 18.1 86 19.5 22.6 86 ST. LAWRENCE ALT 8620 8.0 6.3 127 14.3 12.0 119 TOGWOTEE PASS 9580 31.3 27.9 112 34.3 28.8 119 TOWNSEND CREEK 8700 11.5 9.2 125 17.2 15.4 112 ----- ----- Basin wide percent of average 110 105 BIGHORN BASIN BALD MTN. 9380 20.2 23.5 86 17.8 21.2 84 BEAR TRAP MEADOW 8200 5.8 2.7 215 11.7 10.8 108 BLACKWATER 9780 29.9 28.7 104 27.5 24.6 112 BONE SPRINGS DIV 9350 17.7 18.3 97 16.8 18.2 92 EVENING STAR 9200 32.1 33.2 97 35.8 29.8 120 GRAVE SPRINGS 8550 9.7 11.1 87 12.2 13.0 94 KIRWIN 9550 15.5 13.0 119 18.2 14.1 129 MARQUETTE 8760 8.9 11.2 79 12.4 13.6 91 MIDDLE POWDER 7760 12.0 14.5 83 12.4 15.7 79 OWL CREEK 8975 4.9 4.1 120 9.5 8.1 117 POWDER RIVER PASS 9480 12.6 10.9 116 18.2 15.7 116 SHELL CREEK 9580 18.1 16.9 107 18.2 16.7 109 SYLVAN LAKE 8420 21.9 23.9 92 27.7 24.6 113 SYLVAN ROAD 7120 7.3 8.4 87 22.4 20.4 110 TIMBER CREEK 7950 5.3 4.9 108 11.8 10.4 113 YOUNTS PEAK 8350 20.2 18.2 111 18.9 18.7 101 ----- ----- Basin wide percent of average 99 106 SHOSHONE RIVER BLACKWATER 9780 29.9 28.7 104 27.5 24.6 112 EVENING STAR 9200 32.1 33.2 97 35.8 29.8 120 KIRWIN 9550 15.5 13.0 119 18.2 14.1 129 MARQUETTE 8760 8.9 11.2 79 12.4 13.6 91 SYLVAN LAKE 8420 21.9 23.9 92 27.7 24.6 113 SYLVAN ROAD 7120 7.3 8.4 87 22.4 20.4 110 YOUNTS PEAK 8350 20.2 18.2 111 18.9 18.7 101 ----- ----- Basin wide percent of average 99 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.8 2.7 215 11.7 10.8 108 BIG GOOSE 7990 10.8 11.7 92 15.7 12.8 123 BONE SPRINGS DIV 9350 17.7 18.3 97 16.8 18.2 92 BURGESS JUNCTION 7880 13.5 13.3 102 15.4 15.3 101 CLOUD PEAK RESERVOIR 9860 19.5 16.3 120 20.5 16.9 121 DOME LAKE 8880 12.7 13.7 93 18.5 16.7 111 GRAVE SPRINGS 8550 9.7 11.1 87 12.2 13.0 94 HANSEN SAWMILL 8360 3.9 5.0 78 12.8 10.9 117 MIDDLE POWDER 7760 12.0 14.5 83 12.4 15.7 79 POWDER RIVER PASS 9480 12.6 10.9 116 18.2 15.7 116 SUCKER CREEK 8880 15.8 13.2 120 20.3 17.3 117 TIE CREEK 6870 4.0 4.2 95 17.2 13.4 128 ----- ----- Basin wide percent of average 102 108 BELLE FOURCHE BLIND PARK 6890 .0 4.0 0 17.1 14.1 121 COLE CANYON 5910 5.0 5.2 96 14.8 9.4 157 NORTH RAPID CREEK 6130 2.6 4.2 62 16.9 11.3 150 ----- ----- Basin wide percent of average 57 140 UPPER N. PLATTE RIVER COLUMBINE 9160 19.1 21.3 90 31.3 29.0 108 DIVIDE PEAK 8880 26.4 19.6 135 32.1 24.2 133 ELK RIVER 8700 13.5 15.4 88 25.2 22.9 110 JOE WRIGHT 10120 26.3 25.1 105 33.1 29.9 111 NORTH FRENCH CREEK 10130 38.4 34.5 111 37.3 29.5 126 OLD BATTLE 10000 39.7 36.8 108 45.9 39.7 116 SAGE CREEK BASIN 7850 11.0 11.4 96 18.4 14.0 131 SOUTH BRUSH CREEK 8440 9.5 11.3 84 21.3 20.0 106 TOWER 10500 49.4 52.1 95 48.4 44.9 108 WEBBER SPRINGS 9250 24.9 25.3 98 34.7 31.0 112 WILLOW CREEK PASS 9540 13.3 14.2 94 15.1 15.6 97 ----- ----- Basin wide percent of average 102 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 25.4 28.3 90 26.4 26.8 99 CASPER MTN. 7900 14.2 17.3 82 17.5 19.4 90 DEADMAN HILL 10220 21.7 19.6 111 22.7 20.8 109 DEER PARK 9700 15.3 19.0 81 21.9 26.8 82 LAPRELE CREEK 8375 8.9 7.4 120 16.4 16.3 101 RENO HILL 8400 15.5 15.0 103 21.0 20.0 105 ROACH 9700 18.0 18.6 97 23.3 22.3 104 SAND LAKE 10050 35.8 36.9 97 35.2 29.1 121 SOUTH PASS 9040 15.6 18.1 86 19.5 22.6 86 WINDY PEAK 7900 9.2 5.2 177 14.5 13.4 108 ----- ----- Basin wide percent of average 97 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 4.3 4.9 88 21.8 18.5 118 DIVIDE PEAK 8880 26.4 19.6 135 32.1 24.2 133 OLD BATTLE 10000 39.7 36.8 108 45.9 39.7 116 SANDSTONE RS 8150 13.8 9.8 141 24.2 21.8 111 WHISKEY PARK 8950 31.7 30.6 104 39.1 33.6 116 ----- ----- Basin wide percent of average 114 118 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.8 13.7 93 15.5 15.8 98 BLIND BULL SUM 8650 30.2 28.0 108 23.6 25.1 94 EAST RIM DIVIDE 7930 5.3 13.3 40 14.0 13.8 101 ELKHART PARK G.S. 9400 14.4 13.0 111 17.7 15.9 111 GROS VENTRE SUMMIT 8750 13.0 13.4 97 18.1 15.2 119 GUNSIGHT PASS 9820 17.1 -M * 19.2 -M * KENDALL R.S. 7740 6.2 10.3 60 16.1 16.5 98 LOOMIS PARK 8240 13.4 14.6 92 21.3 19.9 107 NEW FORK LAKE 8340 9.0 8.7 103 13.0 13.3 98 SNIDER BASIN 8060 13.3 12.9 103 17.4 18.5 94 SPRING CREEK DIVIDE 9000 32.2 28.7 112 31.2 30.1 104 TRIPLE PEAK 8500 23.7 24.0 99 31.0 28.5 109 ----- ----- Basin wide percent of average 96 103 LOWER GREEN RIVER HAMS FORK 7840 6.7 6.3 106 14.7 14.7 100 HEWINTA 9519 5.1 9.5 54 16.6 17.7 94 HICKERSON PARK 9145 4.3 5.9 73 13.0 10.1 129 HOLE-IN-ROCK 9150 4.2 5.0 84 12.5 9.7 129 INDIAN CREEK 9425 -M 28.5 * 26.0 29.3 89 KELLEY R.S. 8180 14.9 14.4 103 21.1 23.5 90 STEEL CREEK PARK 10200 16.8 18.6 90 20.3 20.1 101 ----- ----- Basin wide percent of average 87 99 UPPER BEAR RIVER BUG LAKE 7950 17.8 18.4 97 21.0 22.3 94 HAYDEN FORK 9212 11.3 13.3 85 26.3 25.0 105 KELLEY R.S. 8180 14.9 14.4 103 21.1 23.5 90 LILY LAKE 9156 11.9 11.4 104 20.9 21.0 100 MONTE CRISTO 8960 27.1 28.5 95 31.2 30.1 104 SALT RIVER SUMMIT 7760 13.7 11.0 125 19.4 21.5 90 TRIAL LAKE 9992 25.5 26.5 96 28.1 29.3 96 ----- ----- Basin wide percent of average 99 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.