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 WEDNESDAY: MAY 26 , 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 1.9 0 17.4 26.5 66 COTTONWOOD CREEK 7670 10.6 8.9 119 29.5 35.1 84 GRAND TARGHEE 9260 45.9 -M * 37.9 -M * GRANITE CREEK 6770 .0 3.8 0 16.3 24.4 67 GRASSY LAKE 7265 13.3 19.7 68 33.1 44.2 75 GROS VENTRE SUMMIT 8750 4.7 6.4 73 13.5 17.1 79 GUNSIGHT PASS 9820 11.2 -M * 16.4 -M * LEWIS LAKE DIVIDE 7850 13.8 23.0 60 27.8 44.6 62 PHILLIPS BENCH 8200 12.7 18.4 69 25.6 35.9 71 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.6 72 SNAKE RIVER STATION 6920 .0 .5 0* 20.8 27.8 75 SPRING CREEK DIVIDE 9000 21.2 19.5 109 25.1 32.5 77 THUMB DIVIDE 7980 .0 5.2 0 17.3 24.3 71 TOGWOTEE PASS 9580 23.4 24.8 94 -M 32.0 * TWO OCEAN PLATEAU 9240 25.3 28.0 90 23.6 35.5 66 WILLOW CREEK 8380 19.5 19.3 101 38.2 41.7 92 ----- ----- Basin wide percent of average 81 74 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 17.4 23.2 75 18.8 26.3 71 BLACK BEAR 8170 23.3 31.5 74 33.6 49.4 68 CANYON 7870 1.5 3.5 43 15.0 19.9 75 FISHER CREEK 9100 26.0 33.0 79 31.3 45.7 68 MADISON PLATEAU 7750 11.8 13.6 87 26.4 33.4 79 NORTHEAST ENTRANCE 7350 .0 .9 0* 12.8 16.9 76 PARKER PEAK 9400 18.2 21.5 85 17.8 22.4 79 SYLVAN LAKE 8420 11.0 15.5 71 23.9 28.0 85 THUMB DIVIDE 7980 .0 5.2 0 17.3 24.3 71 TWO OCEAN PLATEAU 9240 25.3 28.0 90 23.6 35.5 66 WHISKEY CREEK 6800 2.1 4.5 47 17.1 26.6 64 WHITE MILL 8700 17.2 21.3 81 21.7 34.3 63 WOLVERINE 7650 .0 .6 0* 10.1 17.7 57 ----- ----- Basin wide percent of average 76 71 WIND RIVER BURROUGHS CREEK 8750 9.3 6.3 148 -M 21.9 * COLD SPRINGS 9630 7.7 1.3 592 19.2 16.5 116 DEER PARK 9700 21.9 13.2 166 28.9 30.2 96 HOBBS PARK 10100 26.7 13.2 202 28.7 20.2 142 LITTLE WARM 9370 8.5 3.9 218 15.5 19.4 80 SOUTH PASS 9040 17.7 9.2 192 26.7 25.4 105 ST. LAWRENCE ALT 8620 6.4 1.0 640 20.3 14.6 139 TOGWOTEE PASS 9580 23.4 24.8 94 -M 32.0 * TOWNSEND CREEK 8700 13.8 2.8 493 25.5 18.2 140 ----- ----- Basin wide percent of average 179 114 BIGHORN BASIN BALD MTN. 9380 19.9 19.9 100 19.2 24.6 78 BEAR TRAP MEADOW 8200 1.1 .1 1100* 15.0 13.5 111 BLACKWATER 9780 22.9 27.7 83 23.1 28.0 83 BONE SPRINGS DIV 9350 15.3 12.2 125 18.1 21.5 84 EVENING STAR 9200 19.2 29.6 65 27.5 33.4 82 GRAVE SPRINGS 8550 9.6 2.9 331 19.0 15.5 123 KIRWIN 9550 11.9 8.2 145 17.1 16.8 102 MARQUETTE 8760 13.1 6.2 211 18.5 17.1 108 MIDDLE POWDER 7760 10.2 6.0 170 15.2 18.5 82 OWL CREEK 8975 1.2 1.1 109 13.2 10.5 126 POWDER RIVER PASS 9480 8.0 4.3 186 18.2 18.8 97 SHELL CREEK 9580 16.7 13.4 125 19.2 19.8 97 SYLVAN LAKE 8420 11.0 15.5 71 23.9 28.0 85 SYLVAN ROAD 7120 .0 .4 0* 17.1 22.7 75 TIMBER CREEK 7950 2.5 1.1 227 15.1 13.6 111 YOUNTS PEAK 8350 9.7 10.8 90 14.2 21.3 67 ----- ----- Basin wide percent of average 108 91 SHOSHONE RIVER BLACKWATER 9780 22.9 27.7 83 23.1 28.0 83 EVENING STAR 9200 19.2 29.6 65 27.5 33.4 82 KIRWIN 9550 11.9 8.2 145 17.1 16.8 102 MARQUETTE 8760 13.1 6.2 211 18.5 17.1 108 SYLVAN LAKE 8420 11.0 15.5 71 23.9 28.0 85 SYLVAN ROAD 7120 .0 .4 0* 17.1 22.7 75 YOUNTS PEAK 8350 9.7 10.8 90 14.2 21.3 67 ----- ----- Basin wide percent of average 89 85 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 .1 1100* 15.0 13.5 111 BIG GOOSE 7990 11.0 6.2 177 20.0 15.8 127 BONE SPRINGS DIV 9350 15.3 12.2 125 18.1 21.5 84 BURGESS JUNCTION 7880 12.2 5.9 207 18.3 17.9 102 CLOUD PEAK RESERVOIR 9860 19.0 11.2 170 22.1 20.8 106 DOME LAKE 8880 12.5 5.7 219 21.3 19.9 107 GRAVE SPRINGS 8550 9.6 2.9 331 19.0 15.5 123 HANSEN SAWMILL 8360 1.2 .7 171 15.8 13.4 118 MIDDLE POWDER 7760 10.2 6.0 170 15.2 18.5 82 POWDER RIVER PASS 9480 8.0 4.3 186 18.2 18.8 97 SUCKER CREEK 8880 16.4 6.5 252 23.5 20.8 113 TIE CREEK 6870 2.0 .0 * 20.0 16.5 121 ----- ----- Basin wide percent of average 192 106 BELLE FOURCHE BLIND PARK 6890 .0 .0 100* 20.4 17.1 119 COLE CANYON 5910 .0 .0 100* 19.5 12.2 160 NORTH RAPID CREEK 6130 .0 .0 100* 18.4 13.5 136 ----- ----- Basin wide percent of average * 136 UPPER N. PLATTE RIVER COLUMBINE 9160 9.1 5.8 157 30.7 31.7 97 DIVIDE PEAK 8880 14.5 7.0 207 32.7 26.9 122 ELK RIVER 8700 -M 3.1 * -M 25.4 * JOE WRIGHT 10120 23.5 20.6 114 31.6 34.0 93 NORTH FRENCH CREEK 10130 -M 28.7 * -M 33.4 * OLD BATTLE 10000 -M 30.5 * -M 43.5 * SAGE CREEK BASIN 7850 .0 4.1 0 18.3 15.6 117 SOUTH BRUSH CREEK 8440 5.2 3.3 158 28.1 23.0 122 TOWER 10500 -M 47.6 * -M 49.1 * WEBBER SPRINGS 9250 19.9 11.1 179 37.4 34.0 110 WILLOW CREEK PASS 9540 9.9 6.4 155 18.4 18.1 102 ----- ----- Basin wide percent of average 141 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 -M 16.6 * -M 30.4 * CASPER MTN. 7900 10.9 6.8 160 21.9 23.2 94 DEADMAN HILL 10220 26.5 14.6 182 27.0 24.0 113 DEER PARK 9700 21.9 13.2 166 28.9 30.2 96 LAPRELE CREEK 8375 .0 1.7 0 19.7 19.4 102 RENO HILL 8400 14.2 5.6 254 27.6 23.9 115 ROACH 9700 18.0 8.9 202 30.0 25.6 117 SAND LAKE 10050 39.9 30.9 129 41.9 33.4 125 SOUTH PASS 9040 17.7 9.2 192 26.7 25.4 105 WINDY PEAK 7900 .3 .5 60* 19.9 16.3 122 ----- ----- Basin wide percent of average 163 110 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 20.8 20.5 101 DIVIDE PEAK 8880 14.5 7.0 207 32.7 26.9 122 OLD BATTLE 10000 -M 30.5 * -M 43.5 * SANDSTONE RS 8150 -M 1.1 * 23.9 24.3 98 WHISKEY PARK 8950 29.3 19.7 149 41.4 37.1 112 ----- ----- Basin wide percent of average 164* 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 3.7 4.7 79 13.7 18.0 76 BLIND BULL SUM 8650 18.7 21.3 88 18.5 27.5 67 EAST RIM DIVIDE 7930 .1 4.9 2 10.1 15.6 65 ELKHART PARK G.S. 9400 4.5 6.0 75 12.5 18.4 68 GROS VENTRE SUMMIT 8750 4.7 6.4 73 13.5 17.1 79 GUNSIGHT PASS 9820 11.2 -M * 16.4 -M * KENDALL R.S. 7740 .1 .0 * 12.1 18.2 66 LOOMIS PARK 8240 .2 5.5 4 14.2 22.0 65 NEW FORK LAKE 8340 .0 .0 100* 9.8 15.4 64 POCKET CREEK 9360 8.0 -M * 15.4 -M * SNIDER BASIN 8060 1.0 3.0 33 16.4 20.0 82 SPRING CREEK DIVIDE 9000 21.2 19.5 109 25.1 32.5 77 TRIPLE PEAK 8500 13.4 10.2 131 28.6 31.3 91 ----- ----- Basin wide percent of average 83 74 LOWER GREEN RIVER HAMS FORK 7840 .4 .0 * 15.4 16.5 93 HEWINTA 9519 2.8 1.6 175 18.1 19.8 91 HICKERSON PARK 9145 .0 .4 0* 15.9 12.1 131 HOLE-IN-ROCK 9150 .0 .3 0* 15.4 11.7 132 INDIAN CREEK 9425 20.6 18.8 110 24.4 31.9 76 KELLEY R.S. 8180 5.5 4.7 117 19.7 25.7 77 STEEL CREEK PARK 10200 20.8 14.9 140 22.7 22.6 100 ----- ----- Basin wide percent of average 123 94 UPPER BEAR RIVER BUG LAKE 7950 9.0 5.5 164 21.5 24.6 87 HAYDEN FORK 9212 .6 3.4 18 25.0 27.8 90 KELLEY R.S. 8180 5.5 4.7 117 19.7 25.7 77 LILY LAKE 9156 6.9 3.1 223 21.0 23.5 89 MONTE CRISTO 8960 18.7 17.0 110 28.1 33.4 84 SALT RIVER SUMMIT 7760 .0 .0 100* 17.1 23.6 72 TRIAL LAKE 9992 18.7 18.5 101 23.1 32.5 71 ----- ----- Basin wide percent of average 114 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.