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: MAY 27 , 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 1.4 0* 17.4 26.6 65 COTTONWOOD CREEK 7670 10.1 8.3 122 29.5 35.2 84 GRAND TARGHEE 9260 46.0 -M * 38.0 -M * GRANITE CREEK 6770 .0 3.4 0 16.6 24.4 68 GRASSY LAKE 7265 12.8 19.0 67 33.1 44.3 75 GROS VENTRE SUMMIT 8750 4.0 6.0 67 13.6 17.2 79 GUNSIGHT PASS 9820 10.9 -M * 16.5 -M * LEWIS LAKE DIVIDE 7850 13.6 22.3 61 27.9 44.7 62 PHILLIPS BENCH 8200 12.2 17.8 69 25.7 36.0 71 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.7 72 SNAKE RIVER STATION 6920 .0 .0 100* 20.8 27.9 75 SPRING CREEK DIVIDE 9000 21.0 18.9 111 25.2 32.6 77 THUMB DIVIDE 7980 .1 4.8 2 17.4 24.3 72 TOGWOTEE PASS 9580 23.1 24.4 95 -M 32.1 * TWO OCEAN PLATEAU 9240 25.1 27.7 91 23.7 35.6 67 WILLOW CREEK 8380 19.2 18.6 103 38.2 41.8 91 ----- ----- Basin wide percent of average 82 74 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 17.3 22.9 76 19.0 26.4 72 BLACK BEAR 8170 23.1 30.9 75 33.7 49.5 68 CANYON 7870 .8 3.1 26 15.1 20.0 76 FISHER CREEK 9100 25.7 32.7 79 31.2 45.8 68 MADISON PLATEAU 7750 11.2 13.0 86 26.5 33.5 79 NORTHEAST ENTRANCE 7350 .0 .8 0* 12.9 17.0 76 PARKER PEAK 9400 17.8 21.1 84 18.0 22.5 80 SYLVAN LAKE 8420 10.7 15.0 71 23.9 28.2 85 THUMB DIVIDE 7980 .1 4.8 2 17.4 24.3 72 TWO OCEAN PLATEAU 9240 25.1 27.7 91 23.7 35.6 67 WHISKEY CREEK 6800 1.2 3.9 31 17.2 26.7 64 WHITE MILL 8700 16.9 20.9 81 21.9 34.5 63 WOLVERINE 7650 .0 .4 0* 10.1 17.8 57 ----- ----- Basin wide percent of average 76 71 WIND RIVER BURROUGHS CREEK 8750 8.9 6.0 148 -M 22.0 * COLD SPRINGS 9630 7.1 1.2 592 19.3 16.5 117 DEER PARK 9700 21.4 12.7 169 28.9 30.3 95 HOBBS PARK 10100 26.5 12.8 207 28.7 20.3 141 LITTLE WARM 9370 7.8 3.5 223 15.6 19.5 80 SOUTH PASS 9040 17.0 8.8 193 26.7 25.5 105 ST. LAWRENCE ALT 8620 5.6 1.0 560 20.3 14.7 138 TOGWOTEE PASS 9580 23.1 24.4 95 -M 32.1 * TOWNSEND CREEK 8700 13.1 2.6 504 25.4 18.3 139 ----- ----- Basin wide percent of average 179 114 BIGHORN BASIN BALD MTN. 9380 19.9 19.5 102 19.3 24.7 78 BEAR TRAP MEADOW 8200 .4 .1 400* 15.0 13.6 110 BLACKWATER 9780 22.8 27.3 84 23.3 28.1 83 BONE SPRINGS DIV 9350 15.0 11.8 127 18.3 21.6 85 EVENING STAR 9200 19.1 29.1 66 27.6 33.5 82 GRAVE SPRINGS 8550 9.1 2.8 325 19.0 15.6 122 KIRWIN 9550 11.2 7.8 144 17.2 16.9 102 MARQUETTE 8760 12.7 6.0 212 18.5 17.3 107 MIDDLE POWDER 7760 9.7 5.5 176 15.2 18.6 82 OWL CREEK 8975 .6 1.0 60 13.2 10.6 125 POWDER RIVER PASS 9480 7.6 3.9 195 18.2 18.9 96 SHELL CREEK 9580 16.5 13.1 126 19.2 19.9 96 SYLVAN LAKE 8420 10.7 15.0 71 23.9 28.2 85 SYLVAN ROAD 7120 .0 .3 0* 17.0 22.8 75 TIMBER CREEK 7950 2.1 1.1 191 15.2 13.7 111 YOUNTS PEAK 8350 9.2 10.3 89 14.2 21.5 66 ----- ----- Basin wide percent of average 108 90 SHOSHONE RIVER BLACKWATER 9780 22.8 27.3 84 23.3 28.1 83 EVENING STAR 9200 19.1 29.1 66 27.6 33.5 82 KIRWIN 9550 11.2 7.8 144 17.2 16.9 102 MARQUETTE 8760 12.7 6.0 212 18.5 17.3 107 SYLVAN LAKE 8420 10.7 15.0 71 23.9 28.2 85 SYLVAN ROAD 7120 .0 .3 0* 17.0 22.8 75 YOUNTS PEAK 8350 9.2 10.3 89 14.2 21.5 66 ----- ----- Basin wide percent of average 89 84 POWDER-TONGUE BEAR TRAP MEADOW 8200 .4 .1 400* 15.0 13.6 110 BIG GOOSE 7990 10.4 5.8 179 20.2 15.9 127 BONE SPRINGS DIV 9350 15.0 11.8 127 18.3 21.6 85 BURGESS JUNCTION 7880 11.5 5.5 209 18.4 18.0 102 CLOUD PEAK RESERVOIR 9860 18.1 10.9 166 22.2 20.9 106 DOME LAKE 8880 12.0 5.3 226 21.4 20.0 107 GRAVE SPRINGS 8550 9.1 2.8 325 19.0 15.6 122 HANSEN SAWMILL 8360 .6 .6 100* 16.0 13.5 119 MIDDLE POWDER 7760 9.7 5.5 176 15.2 18.6 82 POWDER RIVER PASS 9480 7.6 3.9 195 18.2 18.9 96 SUCKER CREEK 8880 15.9 6.0 265 23.5 20.9 112 TIE CREEK 6870 1.3 .0 * 20.1 16.6 121 ----- ----- Basin wide percent of average 192 106 BELLE FOURCHE BLIND PARK 6890 .3 .0 * 20.3 17.2 118 COLE CANYON 5910 .2 .0 * 19.8 12.3 161 NORTH RAPID CREEK 6130 .2 .0 * 18.5 13.6 136 ----- ----- Basin wide percent of average * 136 UPPER N. PLATTE RIVER COLUMBINE 9160 7.7 5.2 148 30.9 31.8 97 DIVIDE PEAK 8880 13.2 6.5 203 32.7 27.0 121 ELK RIVER 8700 2.7 2.7 100 27.4 25.5 107 JOE WRIGHT 10120 22.9 20.2 113 31.6 34.1 93 NORTH FRENCH CREEK 10130 42.6 28.1 152 46.1 33.6 137 OLD BATTLE 10000 42.2 29.9 141 48.3 43.6 111 SAGE CREEK BASIN 7850 .0 3.8 0 18.4 15.6 118 SOUTH BRUSH CREEK 8440 4.2 3.0 140 28.2 23.1 122 TOWER 10500 42.1 47.1 89 45.8 49.3 93 WEBBER SPRINGS 9250 19.0 10.4 183 37.5 34.1 110 WILLOW CREEK PASS 9540 9.0 5.9 153 18.4 18.2 101 ----- ----- Basin wide percent of average 126 109 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.5 15.9 135 30.7 30.5 101 CASPER MTN. 7900 10.2 6.4 159 21.9 23.3 94 DEADMAN HILL 10220 25.7 14.1 182 27.0 24.1 112 DEER PARK 9700 21.4 12.7 169 28.9 30.3 95 LAPRELE CREEK 8375 .0 1.5 0 19.8 19.5 102 RENO HILL 8400 12.8 5.2 246 27.8 24.1 115 ROACH 9700 16.6 8.4 198 30.0 25.8 116 SAND LAKE 10050 39.2 30.3 129 41.9 33.5 125 SOUTH PASS 9040 17.0 8.8 193 26.7 25.5 105 WINDY PEAK 7900 .2 .4 50* 20.4 16.4 124 ----- ----- Basin wide percent of average 159 109 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 20.9 20.6 101 DIVIDE PEAK 8880 13.2 6.5 203 32.7 27.0 121 OLD BATTLE 10000 42.2 29.9 141 48.3 43.6 111 SANDSTONE RS 8150 -M .9 * 23.8 24.3 98 WHISKEY PARK 8950 27.5 18.8 146 41.4 37.2 111 ----- ----- Basin wide percent of average 150 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.0 4.3 70 13.8 18.1 76 BLIND BULL SUM 8650 18.4 20.8 88 18.5 27.6 67 EAST RIM DIVIDE 7930 .2 4.4 5 10.1 15.7 64 ELKHART PARK G.S. 9400 3.9 5.6 70 12.6 18.5 68 GROS VENTRE SUMMIT 8750 4.0 6.0 67 13.6 17.2 79 GUNSIGHT PASS 9820 10.9 -M * 16.5 -M * KENDALL R.S. 7740 .1 .0 * 12.1 18.2 66 LOOMIS PARK 8240 .2 5.1 4 14.1 22.1 64 NEW FORK LAKE 8340 .0 .0 100* 10.2 15.4 66 POCKET CREEK 9360 7.7 -M * 15.4 -M * SNIDER BASIN 8060 .5 2.5 20 16.4 20.1 82 SPRING CREEK DIVIDE 9000 21.0 18.9 111 25.2 32.6 77 TRIPLE PEAK 8500 12.8 9.5 135 28.7 31.4 91 ----- ----- Basin wide percent of average 83 74 LOWER GREEN RIVER HAMS FORK 7840 .4 .0 * 15.3 16.6 92 HEWINTA 9519 1.4 1.4 100 18.1 19.9 91 HICKERSON PARK 9145 .0 .3 0* 16.0 12.2 131 HOLE-IN-ROCK 9150 .0 .3 0* 15.4 11.8 131 INDIAN CREEK 9425 20.3 18.2 112 24.5 32.0 77 KELLEY R.S. 8180 5.1 4.2 121 19.7 25.8 76 STEEL CREEK PARK 10200 20.7 14.5 143 22.8 22.7 100 ----- ----- Basin wide percent of average 123 93 UPPER BEAR RIVER BUG LAKE 7950 8.6 5.0 172 21.5 24.7 87 HAYDEN FORK 9212 .2 3.0 7 25.1 27.9 90 KELLEY R.S. 8180 5.1 4.2 121 19.7 25.8 76 LILY LAKE 9156 5.8 2.8 207 21.0 23.6 89 MONTE CRISTO 8960 18.7 16.4 114 28.1 33.5 84 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.7 72 TRIAL LAKE 9992 18.2 18.0 101 23.1 32.7 71 ----- ----- Basin wide percent of average 115 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.