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 MONDAY: MAY 14 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 6.9 0 21.2 25.5 83 COTTONWOOD CREEK 7600 1.9 14.3 13 25.6 33.5 76 GRANITE CREEK 6770 .0 8.2 0 17.8 23.4 76 GRASSY LAKE 7265 6.7 27.0 25 36.8 42.7 86 GROS VENTRE SUMMIT 8750 .4 10.1 4 13.9 16.3 85 LEWIS LAKE DIVIDE 7850 7.2 29.4 24 32.7 43.2 76 PHILLIPS BENCH 8200 4.5 24.5 18 25.0 34.6 72 SALT RIVER SUMMIT 7600 -M 5.3 * -M 22.6 * SNAKE RIVER STATION 6920 .0 6.2 0 23.6 26.7 88 SPRING CREEK DIVIDE 9000 13.6 25.0 54 22.9 31.4 73 THUMB DIVIDE 7980 .1 10.1 1 17.6 23.2 76 TOGWOTEE PASS 9580 13.6 27.4 50 23.4 30.6 76 TWO OCEAN PLATEAU 9240 19.1 30.8 62 25.7 33.9 76 WILLOW CREEK 8450 6.6 25.7 26 34.4 39.8 86 ----- ----- Basin wide percent of average 30 79 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.4 25.5 68 22.1 25.0 88 BLACK BEAR 8170 17.7 36.7 48 37.7 47.7 79 CANYON 8090 .7 7.4 9 17.9 18.9 95 FISHER CREEK 9100 28.2 36.7 77 33.8 43.9 77 MADISON PLATEAU 7750 5.4 19.8 27 24.4 32.0 76 NORTHEAST ENTRANCE 7350 .0 3.6 0 15.0 16.0 94 PARKER PEAK 9400 10.0 24.0 42 21.6 21.1 102 SYLVAN LAKE 8420 .3 20.6 1 24.8 26.5 94 THUMB DIVIDE 7980 .1 10.1 1 17.6 23.2 76 TWO OCEAN PLATEAU 9240 19.1 30.8 62 25.7 33.9 76 WHISKEY CREEK 6800 .0 10.2 0 20.6 25.5 81 WHITE MILL 8700 15.1 24.8 61 22.9 32.9 70 WOLVERINE 7650 .0 3.5 0 13.0 16.5 79 ----- ----- Basin wide percent of average 45 82 WIND RIVER BURROUGHS CREEK 8750 4.0 10.6 38 15.3 20.7 74 COLD SPRINGS 9630 .0 3.4 0 12.8 15.2 84 DEER PARK 9700 7.5 17.3 43 20.9 28.6 73 HOBBS PARK 10100 12.5 16.8 74 19.2 18.6 103 LITTLE WARM 9370 .4 8.0 5 14.3 18.1 79 SOUTH PASS 9040 2.4 14.4 17 17.9 24.1 74 ST. LAWRENCE ALT 8620 .1 3.9 3 13.0 13.4 97 TOGWOTEE PASS 9580 13.6 27.4 50 23.4 30.6 76 TOWNSEND CREEK 8700 .2 5.9 3 15.4 16.9 91 ----- ----- Basin wide percent of average 38 82 BIGHORN BASIN BALD MTN. 9380 20.1 23.0 87 20.0 23.0 87 BEAR TRAP MEADOW 8200 .0 .8 0 13.0 12.3 106 BLACKWATER 9780 17.0 28.8 59 23.5 26.5 89 BONE SPRINGS DIV 9350 17.3 16.3 106 23.3 20.0 116 EVENING STAR 9200 13.7 32.6 42 30.6 31.8 96 GRAVE SPRINGS 8550 1.4 8.1 17 11.7 14.4 81 KIRWIN 9550 8.4 11.1 76 17.0 15.6 109 MARQUETTE 8760 .0 9.1 0 15.5 15.5 100 MIDDLE POWDER 7760 7.0 11.3 62 12.4 17.2 72 OWL CREEK 8975 .1 2.4 4 9.2 9.4 98 POWDER RIVER PASS 9480 .5 8.3 6 15.8 17.4 91 SHELL CREEK 9580 13.2 16.3 81 17.2 18.4 93 SYLVAN LAKE 8420 .3 20.6 1 24.8 26.5 94 SYLVAN ROAD 7120 .0 3.1 0 17.6 21.7 81 TIMBER CREEK 7950 .2 2.4 8 11.8 12.1 98 YOUNTS PEAK 8350 3.2 15.6 21 16.2 20.2 80 ----- ----- Basin wide percent of average 49 93 SHOSHONE RIVER BLACKWATER 9780 17.0 28.8 59 23.5 26.5 89 EVENING STAR 9200 13.7 32.6 42 30.6 31.8 96 KIRWIN 9550 8.4 11.1 76 17.0 15.6 109 MARQUETTE 8760 .0 9.1 0 15.5 15.5 100 SYLVAN LAKE 8420 .3 20.6 1 24.8 26.5 94 SYLVAN ROAD 7120 .0 3.1 0 17.6 21.7 81 YOUNTS PEAK 8350 3.2 15.6 21 16.2 20.2 80 ----- ----- Basin wide percent of average 35 92 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .8 0 13.0 12.3 106 BIG GOOSE 7990 6.6 9.3 71 19.0 14.4 132 BONE SPRINGS DIV 9350 17.3 16.3 106 23.3 20.0 116 BURGESS JUNCTION 7880 10.5 10.4 101 19.1 16.7 114 CLOUD PEAK RESERVOIR 9860 13.7 14.9 92 20.1 19.0 106 DOME LAKE 8880 9.1 10.6 86 21.9 18.4 119 GRAVE SPRINGS 8550 1.4 8.1 17 11.7 14.4 81 HANSEN SAWMILL 8360 .0 2.4 0 13.2 12.3 107 MIDDLE POWDER 7760 7.0 11.3 62 12.4 17.2 72 POWDER RIVER PASS 9480 .5 8.3 6 15.8 17.4 91 SUCKER CREEK 8880 10.8 10.4 104 22.5 19.1 118 TIE CREEK 6870 .1 1.5 7 16.6 15.1 110 ----- ----- Basin wide percent of average 74 106 BELLE FOURCHE BLIND PARK 6890 .1 .4 25* 12.8 15.8 81 COLE CANYON 5910 .3 3.2 9 14.3 -M * NORTH RAPID CREEK 6130 .0 .8 0* 12.2 12.5 98 ----- ----- Basin wide percent of average 9* 88 UPPER N. PLATTE RIVER COLUMBINE 9160 .0 13.7 0 24.4 30.5 80 DIVIDE PEAK 8860 1.5 13.3 11 23.2 25.6 91 ELK RIVER 8700 .2 8.1 2 21.0 24.3 86 JOE WRIGHT 10120 20.8 23.9 87 27.5 32.1 86 NORTH FRENCH CREEK 10130 20.1 33.3 60 28.8 31.6 91 OLD BATTLE 9920 23.8 35.6 67 33.0 41.7 79 SAGE CREEK BASIN 7850 .1 7.7 1 15.1 14.9 101 SOUTH BRUSH CREEK 8440 .1 6.8 1 18.0 21.6 83 TOWER 10500 22.9 51.5 44 37.3 47.2 79 WEBBER SPRINGS 9250 6.4 18.6 34 26.8 32.6 82 WILLOW CREEK PASS 9540 12.7 11.4 111 16.2 17.0 95 ----- ----- Basin wide percent of average 49 85 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 15.4 23.5 66 24.6 28.7 86 CASPER MTN. 7850 2.6 12.1 21 17.5 21.4 82 DEADMAN HILL 10220 14.3 18.1 79 22.4 22.6 99 DEER PARK 9700 7.5 17.3 43 20.9 28.6 73 LAPRELE CREEK 8375 .0 3.8 0 16.4 18.0 91 RENO HILL 8500 5.9 10.1 58 22.1 22.1 100 ROACH 9700 13.6 13.8 99 24.1 24.1 100 SAND LAKE 10050 25.6 35.6 72 30.7 31.4 98 SOUTH PASS 9040 2.4 14.4 17 17.9 24.1 74 WINDY PEAK 7900 .6 1.9 32 16.4 15.0 109 ----- ----- Basin wide percent of average 58 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 -M .9 * -M 19.6 * DIVIDE PEAK 8860 1.5 13.3 11 23.2 25.6 91 OLD BATTLE 9920 23.8 35.6 67 33.0 41.7 79 SANDSTONE RS 8150 .8 4.2 19 18.1 23.1 78 WHISKEY PARK 8950 11.5 26.8 43 27.4 35.5 77 ----- ----- Basin wide percent of average 47 81 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 9.3 0 12.9 17.0 76 BLIND BULL SUM 8900 17.0 25.1 68 19.3 26.4 73 EAST RIM DIVIDE 7930 .0 9.5 0 10.7 14.8 72 ELKHART PARK G.S. 9400 1.2 9.6 12 13.9 17.3 80 GROS VENTRE SUMMIT 8750 .4 10.1 4 13.9 16.3 85 KENDALL R.S. 7740 .0 4.1 0 14.0 17.4 80 LOOMIS PARK 8240 .0 10.0 0 15.7 21.0 75 NEW FORK LAKE 8340 .0 4.1 0 -M 14.4 * SNIDER BASIN 8060 .0 8.1 0 13.7 19.3 71 SPRING CREEK DIVIDE 9000 13.6 25.0 54 22.9 31.4 73 TRIPLE PEAK 8500 4.6 17.6 26 26.6 30.0 89 ----- ----- Basin wide percent of average 28 78 LOWER GREEN RIVER HAMS FORK 7840 .0 1.4 0 12.1 15.7 77 HEWINTA 9500 .0 4.8 0 15.6 18.8 83 HICKERSON PARK 9100 .0 2.4 0 14.1 11.2 126 HOLE-IN-ROCK 9150 .0 1.9 0 12.8 10.7 120 INDIAN CREEK 9425 9.0 24.0 38 20.6 30.8 67 KELLEY R.S. 8180 .3 9.5 3 18.1 24.7 73 STEEL CREEK PARK 10100 11.5 18.1 64 16.9 21.5 79 ----- ----- Basin wide percent of average 33 83 UPPER BEAR RIVER BUG LAKE 7950 .5 11.4 4 17.6 23.5 75 HAYDEN FORK 9100 .0 7.7 0 22.4 26.5 85 KELLEY R.S. 8180 .3 9.5 3 18.1 24.7 73 LILY LAKE 9050 .0 6.6 0 17.8 22.4 79 MONTE CRISTO 8960 4.5 23.1 19 25.0 31.9 78 SALT RIVER SUMMIT 7600 -M 5.3 * -M 22.6 * TRIAL LAKE 9960 3.5 23.4 15 23.0 31.0 74 ----- ----- Basin wide percent of average 11 77 ----------------------------------------------------------------------------- -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 1971-2000. 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.