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 SATURDAY: MAY 29 , 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 .5 0* 17.6 26.8 66 COTTONWOOD CREEK 7670 8.1 7.3 111 29.8 35.4 84 GRAND TARGHEE 9260 46.3 -M * 38.2 -M * GRANITE CREEK 6770 .0 2.5 0 16.9 24.6 69 GRASSY LAKE 7265 11.6 17.4 67 33.7 44.6 76 GROS VENTRE SUMMIT 8750 2.4 5.3 45 13.7 17.4 79 GUNSIGHT PASS 9820 10.1 -M * 16.5 -M * LEWIS LAKE DIVIDE 7850 12.3 20.9 59 28.2 45.0 63 PHILLIPS BENCH 8200 10.6 16.5 64 25.7 36.2 71 SALT RIVER SUMMIT 7760 .0 .0 100* 17.3 23.8 73 SNAKE RIVER STATION 6920 .0 .0 100* 21.2 28.1 75 SPRING CREEK DIVIDE 9000 19.2 17.6 109 25.1 32.8 77 THUMB DIVIDE 7980 .2 3.8 5 17.8 24.5 73 TOGWOTEE PASS 9580 22.4 23.7 95 -M 32.3 * TWO OCEAN PLATEAU 9240 24.7 26.9 92 24.1 35.8 67 WILLOW CREEK 8380 17.7 17.2 103 38.6 42.1 92 ----- ----- Basin wide percent of average 81 74 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 16.2 22.1 73 19.1 26.6 72 BLACK BEAR 8170 22.6 29.4 77 34.5 49.8 69 CANYON 7870 .8 2.6 31 15.6 20.2 77 FISHER CREEK 9100 25.8 31.8 81 31.8 46.1 69 MADISON PLATEAU 7750 10.4 11.6 90 27.2 33.8 80 NORTHEAST ENTRANCE 7350 .0 .7 0* 13.4 17.2 78 PARKER PEAK 9400 15.8 20.4 77 18.4 22.7 81 SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87 THUMB DIVIDE 7980 .2 3.8 5 17.8 24.5 73 TWO OCEAN PLATEAU 9240 24.7 26.9 92 24.1 35.8 67 WHISKEY CREEK 6800 .0 2.7 0 17.6 26.9 65 WHITE MILL 8700 15.7 19.9 79 22.2 34.7 64 WOLVERINE 7650 .0 .2 0* 10.3 17.9 58 ----- ----- Basin wide percent of average 77 72 WIND RIVER BURROUGHS CREEK 8750 6.9 5.1 135 -M 22.2 * COLD SPRINGS 9630 5.1 1.2 425 19.2 16.7 115 DEER PARK 9700 19.4 11.3 172 29.0 30.5 95 HOBBS PARK 10100 24.9 11.8 211 28.6 20.6 139 LITTLE WARM 9370 5.6 3.0 187 15.6 19.7 79 SOUTH PASS 9040 14.6 8.3 176 26.7 25.7 104 ST. LAWRENCE ALT 8620 -M .9 * 20.3 14.9 136 TOGWOTEE PASS 9580 22.4 23.7 95 -M 32.3 * TOWNSEND CREEK 8700 10.2 2.4 425 25.4 18.5 137 ----- ----- Basin wide percent of average 163 112 BIGHORN BASIN BALD MTN. 9380 18.6 18.6 100 19.3 24.9 78 BEAR TRAP MEADOW 8200 .2 .0 * 15.0 13.8 109 BLACKWATER 9780 21.6 26.7 81 23.3 28.4 82 BONE SPRINGS DIV 9350 13.0 10.8 120 18.3 21.9 84 EVENING STAR 9200 17.9 28.5 63 27.8 33.8 82 GRAVE SPRINGS 8550 6.7 2.5 268 19.0 15.8 120 KIRWIN 9550 9.7 7.1 137 17.2 17.1 101 MARQUETTE 8760 10.8 5.5 196 18.4 17.5 105 MIDDLE POWDER 7760 6.5 4.5 144 15.2 18.7 81 OWL CREEK 8975 .1 .8 13 13.2 10.7 123 POWDER RIVER PASS 9480 5.6 3.4 165 18.3 19.2 95 SHELL CREEK 9580 14.9 12.4 120 19.0 20.1 95 SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87 SYLVAN ROAD 7120 .0 .3 0* 17.5 23.0 76 TIMBER CREEK 7950 .6 1.0 60 15.2 14.0 109 YOUNTS PEAK 8350 7.2 9.5 76 14.2 21.7 65 ----- ----- Basin wide percent of average 99 90 SHOSHONE RIVER BLACKWATER 9780 21.6 26.7 81 23.3 28.4 82 EVENING STAR 9200 17.9 28.5 63 27.8 33.8 82 KIRWIN 9550 9.7 7.1 137 17.2 17.1 101 MARQUETTE 8760 10.8 5.5 196 18.4 17.5 105 SYLVAN LAKE 8420 10.3 14.0 74 24.6 28.4 87 SYLVAN ROAD 7120 .0 .3 0* 17.5 23.0 76 YOUNTS PEAK 8350 7.2 9.5 76 14.2 21.7 65 ----- ----- Basin wide percent of average 85 84 POWDER-TONGUE BEAR TRAP MEADOW 8200 .2 .0 * 15.0 13.8 109 BIG GOOSE 7990 7.9 4.9 161 20.1 16.1 125 BONE SPRINGS DIV 9350 13.0 10.8 120 18.3 21.9 84 BURGESS JUNCTION 7880 8.8 4.7 187 18.3 18.2 101 CLOUD PEAK RESERVOIR 9860 16.0 9.9 162 22.3 21.2 105 DOME LAKE 8880 9.2 4.5 204 21.4 20.2 106 GRAVE SPRINGS 8550 6.7 2.5 268 19.0 15.8 120 HANSEN SAWMILL 8360 .2 .5 40* 16.0 13.7 117 MIDDLE POWDER 7760 6.5 4.5 144 15.2 18.7 81 POWDER RIVER PASS 9480 5.6 3.4 165 18.3 19.2 95 SUCKER CREEK 8880 13.6 5.2 262 23.5 21.1 111 TIE CREEK 6870 .0 .0 100* 20.1 16.8 120 ----- ----- Basin wide percent of average 172 105 BELLE FOURCHE BLIND PARK 6890 .1 .0 * 20.3 17.4 117 COLE CANYON 5910 .1 .0 * 20.3 12.5 162 NORTH RAPID CREEK 6130 .1 .0 * 18.6 13.7 136 ----- ----- Basin wide percent of average * 136 UPPER N. PLATTE RIVER COLUMBINE 9160 4.4 4.0 110 31.1 31.9 97 DIVIDE PEAK 8880 8.4 5.5 153 32.6 27.2 120 ELK RIVER 8700 .1 2.2 5 27.4 25.7 107 JOE WRIGHT 10120 20.0 19.2 104 31.6 34.4 92 NORTH FRENCH CREEK 10130 40.3 26.8 150 46.1 33.8 136 OLD BATTLE 10000 39.9 28.5 140 48.4 43.8 111 SAGE CREEK BASIN 7850 .0 3.2 0 18.3 15.8 116 SOUTH BRUSH CREEK 8440 .5 2.5 20 28.3 23.3 121 TOWER 10500 39.1 45.7 86 45.8 49.5 93 WEBBER SPRINGS 9250 17.2 9.0 191 37.4 34.3 109 WILLOW CREEK PASS 9540 6.8 4.9 139 18.4 18.4 100 ----- ----- Basin wide percent of average 117 108 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 18.7 14.4 130 30.7 30.7 100 CASPER MTN. 7900 7.4 5.6 132 21.8 23.5 93 DEADMAN HILL 10220 23.4 13.2 177 26.9 24.3 111 DEER PARK 9700 19.4 11.3 172 29.0 30.5 95 LAPRELE CREEK 8375 .0 1.2 0 19.6 19.7 99 RENO HILL 8400 9.7 4.6 211 27.8 24.3 114 ROACH 9700 13.1 7.6 172 29.9 26.0 115 SAND LAKE 10050 37.2 28.9 129 42.0 33.8 124 SOUTH PASS 9040 14.6 8.3 176 26.7 25.7 104 WINDY PEAK 7900 .2 .3 67* 20.5 16.6 123 ----- ----- Basin wide percent of average 151 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100* 20.9 20.7 101 DIVIDE PEAK 8880 8.4 5.5 153 32.6 27.2 120 OLD BATTLE 10000 39.9 28.5 140 48.4 43.8 111 SANDSTONE RS 8150 -M .6 * 23.7 24.5 97 WHISKEY PARK 8950 21.5 17.1 126 41.4 37.4 111 ----- ----- Basin wide percent of average 137 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 .5 3.3 15 13.8 18.3 75 BLIND BULL SUM 8650 17.8 19.9 89 18.5 27.8 67 EAST RIM DIVIDE 7930 .1 3.4 3 10.1 15.8 64 ELKHART PARK G.S. 9400 1.6 4.8 33 12.5 18.7 67 GROS VENTRE SUMMIT 8750 2.4 5.3 45 13.7 17.4 79 GUNSIGHT PASS 9820 10.1 -M * 16.5 -M * KENDALL R.S. 7740 .1 .0 * 12.1 18.4 66 LOOMIS PARK 8240 .2 4.2 5 14.0 22.2 63 NEW FORK LAKE 8340 .0 .0 100* 10.4 15.6 67 POCKET CREEK 9360 5.4 -M * 15.4 -M * SNIDER BASIN 8060 .1 1.5 7 16.4 20.2 81 SPRING CREEK DIVIDE 9000 19.2 17.6 109 25.1 32.8 77 TRIPLE PEAK 8500 10.6 7.9 134 28.7 31.6 91 ----- ----- Basin wide percent of average 77 73 LOWER GREEN RIVER HAMS FORK 7840 .3 .0 * 15.4 16.7 92 HEWINTA 9519 .0 1.1 0* 18.1 20.0 91 HICKERSON PARK 9145 .0 .2 0* 15.9 12.3 129 HOLE-IN-ROCK 9150 .0 .1 0* 15.4 12.0 128 INDIAN CREEK 9425 18.9 17.1 111 24.5 32.2 76 KELLEY R.S. 8180 3.5 3.3 106 19.7 25.9 76 STEEL CREEK PARK 10200 19.8 13.6 146 22.7 22.9 99 ----- ----- Basin wide percent of average 120* 93 UPPER BEAR RIVER BUG LAKE 7950 6.3 4.1 154 21.6 24.8 87 HAYDEN FORK 9212 .1 2.4 4 24.9 28.1 89 KELLEY R.S. 8180 3.5 3.3 106 19.7 25.9 76 LILY LAKE 9156 2.6 2.3 113 21.0 23.8 88 MONTE CRISTO 8960 17.5 15.1 116 28.1 33.7 83 SALT RIVER SUMMIT 7760 .0 .0 100* 17.3 23.8 73 TRIAL LAKE 9992 15.5 16.8 92 23.2 32.9 71 ----- ----- Basin wide percent of average 103 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.