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 FRIDAY: MAY 28 , 2010 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 1.0 0* 17.3 26.7 65 COTTONWOOD CREEK 7670 9.0 7.8 115 29.5 35.3 84 GRAND TARGHEE 9260 46.3 -M * 38.0 -M * GRANITE CREEK 6770 .0 3.0 0 16.9 24.5 69 GRASSY LAKE 7265 12.1 18.2 66 33.3 44.4 75 GROS VENTRE SUMMIT 8750 3.2 5.7 56 13.6 17.3 79 GUNSIGHT PASS 9820 10.5 -M * 16.4 -M * LEWIS LAKE DIVIDE 7850 13.1 21.6 61 28.0 44.9 62 PHILLIPS BENCH 8200 11.3 17.2 66 25.7 36.1 71 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.8 72 SNAKE RIVER STATION 6920 .0 .0 100* 20.8 28.0 74 SPRING CREEK DIVIDE 9000 20.2 18.3 110 25.1 32.7 77 THUMB DIVIDE 7980 .2 4.3 5 17.4 24.4 71 TOGWOTEE PASS 9580 22.8 24.1 95 -M 32.2 * TWO OCEAN PLATEAU 9240 24.6 27.3 90 23.7 35.7 66 WILLOW CREEK 8380 18.7 17.9 104 38.2 41.9 91 ----- ----- Basin wide percent of average 81 74 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 16.8 22.6 74 19.1 26.5 72 BLACK BEAR 8170 22.7 30.2 75 33.8 49.7 68 CANYON 7870 .6 2.9 21 15.4 20.1 77 FISHER CREEK 9100 25.3 32.3 78 31.3 46.0 68 MADISON PLATEAU 7750 10.7 12.3 87 26.6 33.7 79 NORTHEAST ENTRANCE 7350 .0 .7 0* 12.9 17.1 75 PARKER PEAK 9400 16.7 20.8 80 18.1 22.6 80 SYLVAN LAKE 8420 9.8 14.5 68 24.0 28.3 85 THUMB DIVIDE 7980 .2 4.3 5 17.4 24.4 71 TWO OCEAN PLATEAU 9240 24.6 27.3 90 23.7 35.7 66 WHISKEY CREEK 6800 .7 3.2 22 17.2 26.8 64 WHITE MILL 8700 16.2 20.4 79 22.0 34.6 64 WOLVERINE 7650 .0 .4 0* 10.2 17.9 57 ----- ----- Basin wide percent of average 75 71 WIND RIVER BURROUGHS CREEK 8750 8.1 5.5 147 -M 22.1 * COLD SPRINGS 9630 6.3 1.2 525 19.3 16.7 116 DEER PARK 9700 20.4 12.0 170 29.0 30.4 95 HOBBS PARK 10100 26.4 12.3 215 28.7 20.5 140 LITTLE WARM 9370 6.8 3.2 213 15.6 19.6 80 SOUTH PASS 9040 15.9 8.4 189 26.7 25.6 104 ST. LAWRENCE ALT 8620 -M .9 * 20.3 14.8 137 TOGWOTEE PASS 9580 22.8 24.1 95 -M 32.2 * TOWNSEND CREEK 8700 11.9 2.5 476 25.3 18.4 138 ----- ----- Basin wide percent of average 171 113 BIGHORN BASIN BALD MTN. 9380 19.3 19.2 101 19.3 24.8 78 BEAR TRAP MEADOW 8200 .2 .1 200* 15.0 13.7 109 BLACKWATER 9780 22.0 27.0 81 23.3 28.2 83 BONE SPRINGS DIV 9350 14.1 11.4 124 18.4 21.7 85 EVENING STAR 9200 18.5 28.9 64 27.7 33.7 82 GRAVE SPRINGS 8550 7.9 2.7 293 19.0 15.7 121 KIRWIN 9550 10.5 7.5 140 17.2 17.0 101 MARQUETTE 8760 11.9 5.8 205 18.5 17.4 106 MIDDLE POWDER 7760 8.1 5.0 162 15.2 18.7 81 OWL CREEK 8975 .1 .9 11 13.2 10.7 123 POWDER RIVER PASS 9480 6.7 3.6 186 18.3 19.0 96 SHELL CREEK 9580 15.7 12.8 123 19.1 20.0 96 SYLVAN LAKE 8420 9.8 14.5 68 24.0 28.3 85 SYLVAN ROAD 7120 .0 .3 0* 17.0 22.9 74 TIMBER CREEK 7950 1.2 1.1 109 15.2 13.8 110 YOUNTS PEAK 8350 8.0 10.0 80 14.2 21.6 66 ----- ----- Basin wide percent of average 102 90 SHOSHONE RIVER BLACKWATER 9780 22.0 27.0 81 23.3 28.2 83 EVENING STAR 9200 18.5 28.9 64 27.7 33.7 82 KIRWIN 9550 10.5 7.5 140 17.2 17.0 101 MARQUETTE 8760 11.9 5.8 205 18.5 17.4 106 SYLVAN LAKE 8420 9.8 14.5 68 24.0 28.3 85 SYLVAN ROAD 7120 .0 .3 0* 17.0 22.9 74 YOUNTS PEAK 8350 8.0 10.0 80 14.2 21.6 66 ----- ----- Basin wide percent of average 86 84 POWDER-TONGUE BEAR TRAP MEADOW 8200 .2 .1 200* 15.0 13.7 109 BIG GOOSE 7990 9.2 5.4 170 20.2 16.0 126 BONE SPRINGS DIV 9350 14.1 11.4 124 18.4 21.7 85 BURGESS JUNCTION 7880 10.2 5.1 200 18.5 18.1 102 CLOUD PEAK RESERVOIR 9860 16.6 10.5 158 22.3 21.1 106 DOME LAKE 8880 10.5 4.9 214 21.4 20.1 106 GRAVE SPRINGS 8550 7.9 2.7 293 19.0 15.7 121 HANSEN SAWMILL 8360 .3 .5 60* 16.0 13.6 118 MIDDLE POWDER 7760 8.1 5.0 162 15.2 18.7 81 POWDER RIVER PASS 9480 6.7 3.6 186 18.3 19.0 96 SUCKER CREEK 8880 14.8 5.6 264 23.6 21.0 112 TIE CREEK 6870 .1 .0 * 20.1 16.7 120 ----- ----- Basin wide percent of average 180 106 BELLE FOURCHE BLIND PARK 6890 .3 .0 * 20.4 17.3 118 COLE CANYON 5910 .2 .0 * 20.1 12.4 162 NORTH RAPID CREEK 6130 .2 .0 * 18.6 13.6 137 ----- ----- Basin wide percent of average * 136 UPPER N. PLATTE RIVER COLUMBINE 9160 6.3 4.6 137 31.0 31.8 97 DIVIDE PEAK 8880 10.8 6.0 180 32.6 27.1 120 ELK RIVER 8700 .6 2.4 25 27.5 25.6 107 JOE WRIGHT 10120 21.8 19.7 111 31.6 34.2 92 NORTH FRENCH CREEK 10130 41.4 27.5 151 46.1 33.7 137 OLD BATTLE 10000 41.2 29.2 141 48.4 43.7 111 SAGE CREEK BASIN 7850 .0 3.5 0 18.4 15.7 117 SOUTH BRUSH CREEK 8440 2.5 2.8 89 28.2 23.2 122 TOWER 10500 40.8 46.4 88 45.8 49.4 93 WEBBER SPRINGS 9250 18.5 9.7 191 37.5 34.2 110 WILLOW CREEK PASS 9540 8.2 5.4 152 18.4 18.3 101 ----- ----- Basin wide percent of average 122 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.2 15.1 134 30.7 30.6 100 CASPER MTN. 7900 8.9 6.0 148 21.8 23.4 93 DEADMAN HILL 10220 24.5 13.7 179 26.9 24.2 111 DEER PARK 9700 20.4 12.0 170 29.0 30.4 95 LAPRELE CREEK 8375 .0 1.4 0 19.7 19.6 101 RENO HILL 8400 11.4 4.9 233 27.8 24.2 115 ROACH 9700 14.9 8.0 186 30.0 25.9 116 SAND LAKE 10050 38.4 29.6 130 42.0 33.6 125 SOUTH PASS 9040 15.9 8.4 189 26.7 25.6 104 WINDY PEAK 7900 .2 .4 50* 20.4 16.5 124 ----- ----- Basin wide percent of average 156 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 20.9 20.6 101 DIVIDE PEAK 8880 10.8 6.0 180 32.6 27.1 120 OLD BATTLE 10000 41.2 29.2 141 48.4 43.7 111 SANDSTONE RS 8150 -M .8 * 23.8 24.4 98 WHISKEY PARK 8950 24.6 18.0 137 41.4 37.3 111 ----- ----- Basin wide percent of average 144 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.6 3.8 42 13.8 18.2 76 BLIND BULL SUM 8650 17.9 20.3 88 18.5 27.7 67 EAST RIM DIVIDE 7930 .2 3.9 5 10.1 15.7 64 ELKHART PARK G.S. 9400 2.9 5.2 56 12.5 18.6 67 GROS VENTRE SUMMIT 8750 3.2 5.7 56 13.6 17.3 79 GUNSIGHT PASS 9820 10.5 -M * 16.4 -M * KENDALL R.S. 7740 .1 .0 * 12.1 18.3 66 LOOMIS PARK 8240 .2 4.6 4 14.1 22.1 64 NEW FORK LAKE 8340 .0 .0 100* 10.3 15.5 66 POCKET CREEK 9360 6.6 -M * 15.4 -M * SNIDER BASIN 8060 .1 2.0 5 16.4 20.2 81 SPRING CREEK DIVIDE 9000 20.2 18.3 110 25.1 32.7 77 TRIPLE PEAK 8500 11.6 8.7 133 28.6 31.5 91 ----- ----- Basin wide percent of average 80 74 LOWER GREEN RIVER HAMS FORK 7840 .3 .0 * 15.4 16.7 92 HEWINTA 9519 .0 1.3 0 18.4 19.9 92 HICKERSON PARK 9145 .0 .2 0* 16.0 12.3 130 HOLE-IN-ROCK 9150 .0 .2 0* 15.4 11.9 129 INDIAN CREEK 9425 19.7 17.7 111 24.5 32.1 76 KELLEY R.S. 8180 4.4 3.8 116 19.7 25.8 76 STEEL CREEK PARK 10200 20.3 14.1 144 22.7 22.8 100 ----- ----- Basin wide percent of average 120 93 UPPER BEAR RIVER BUG LAKE 7950 7.5 4.6 163 21.5 24.8 87 HAYDEN FORK 9212 .1 2.7 4 25.0 28.0 89 KELLEY R.S. 8180 4.4 3.8 116 19.7 25.8 76 LILY LAKE 9156 4.2 2.5 168 21.0 23.7 89 MONTE CRISTO 8960 17.9 15.7 114 28.0 33.6 83 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.8 72 TRIAL LAKE 9992 17.1 17.4 98 23.1 32.8 70 ----- ----- Basin wide percent of average 110 81 ----------------------------------------------------------------------------- -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.