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 SUNDAY: MAY 25 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 5.9 1.9 311 32.4 26.5 122 COTTONWOOD CREEK 7670 13.7 8.9 154 30.8 35.1 88 GRAND TARGHEE 9260 54.7 -M * 43.8 -M * GRANITE CREEK 6770 5.5 3.8 145 27.1 24.4 111 GRASSY LAKE 7265 27.2 19.7 138 51.9 44.2 117 GROS VENTRE SUMMIT 8750 4.8 6.4 75 18.0 17.1 105 GUNSIGHT PASS 9820 7.8 -M * 19.1 -M * LEWIS LAKE DIVIDE 7850 28.6 23.0 124 43.7 44.6 98 PHILLIPS BENCH 8200 23.6 18.4 128 41.2 35.9 115 SALT RIVER SUMMIT 7760 .4 .0 19.8 23.6 84 SNAKE RIVER STATION 6920 1.9 .5 380 33.0 27.8 119 SPRING CREEK DIVIDE 9000 16.7 19.5 86 28.5 32.5 88 THUMB DIVIDE 7980 6.8 5.2 131 25.4 24.3 105 TOGWOTEE PASS 9580 29.1 24.8 117 37.3 32.0 117 TWO OCEAN PLATEAU 9240 42.7 28.0 152 40.1 35.5 113 WILLOW CREEK 8380 23.0 19.3 119 48.2 41.7 116 ----- ----- Basin wide percent of average 128 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.4 23.2 122 31.1 26.3 118 BLACK BEAR 8170 44.8 31.5 142 51.6 49.4 104 CANYON 7870 10.2 3.5 291 25.5 19.9 128 FISHER CREEK 9100 45.1 33.0 137 47.8 45.7 105 MADISON PLATEAU 7750 26.0 13.6 191 39.8 33.4 119 NORTHEAST ENTRANCE 7350 .2 .9 22 19.1 16.9 113 PARKER PEAK 9400 29.7 21.5 138 -M 22.4 * SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124 THUMB DIVIDE 7980 6.8 5.2 131 25.4 24.3 105 TWO OCEAN PLATEAU 9240 42.7 28.0 152 40.1 35.5 113 WHISKEY CREEK 6800 -M 4.5 * 30.7 26.6 115 WHITE MILL 8700 28.6 21.3 134 34.6 34.3 101 WOLVERINE 7650 .0 .6 0 19.7 17.7 111 ----- ----- Basin wide percent of average 144 112 WIND RIVER BURROUGHS CREEK 8750 10.9 6.3 173 23.4 21.9 107 COLD SPRINGS 9630 1.2 1.3 92 15.9 16.5 96 DEER PARK 9700 14.3 13.2 108 27.4 30.1 91 HOBBS PARK 10100 15.4 13.2 117 21.8 20.2 108 LITTLE WARM 9370 1.7 3.9 44 19.3 19.4 99 SOUTH PASS 9040 9.2 9.2 100 24.0 25.4 94 ST. LAWRENCE ALT 8620 1.4 1.0 140 14.0 14.6 96 TOGWOTEE PASS 9580 29.1 24.8 117 37.3 32.0 117 TOWNSEND CREEK 8700 1.8 2.8 64 18.5 18.2 102 ----- ----- Basin wide percent of average 112 102 BIGHORN BASIN BALD MTN. 9380 19.6 19.9 98 23.7 24.6 96 BEAR TRAP MEADOW 8200 1.7 .1 1700 17.6 13.5 130 BLACKWATER 9780 30.3 27.7 109 32.6 28.0 116 BONE SPRINGS DIV 9350 17.1 12.2 140 26.5 21.5 123 EVENING STAR 9200 29.7 29.6 100 43.6 33.4 131 GRAVE SPRINGS 8550 -M 2.9 * 17.8 15.5 115 KIRWIN 9550 9.8 8.2 120 20.6 16.8 123 MARQUETTE 8760 7.7 6.2 124 18.8 17.1 110 MIDDLE POWDER 7760 9.1 6.0 152 17.5 18.5 95 OWL CREEK 8975 2.2 1.1 200 11.6 10.4 112 POWDER RIVER PASS 9480 9.6 4.3 223 23.5 18.8 125 SHELL CREEK 9580 18.3 13.4 137 23.7 19.8 120 SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124 SYLVAN ROAD 7120 .0 .4 0 27.3 22.7 120 TIMBER CREEK 7950 2.9 1.1 264 16.1 13.6 118 YOUNTS PEAK 8350 13.8 10.8 128 22.8 21.3 107 ----- ----- Basin wide percent of average 124 117 SHOSHONE RIVER BLACKWATER 9780 30.3 27.7 109 32.6 28.0 116 EVENING STAR 9200 29.7 29.6 100 43.6 33.4 131 KIRWIN 9550 9.8 8.2 120 20.6 16.8 123 MARQUETTE 8760 7.7 6.2 124 18.8 17.1 110 SYLVAN LAKE 8420 22.9 15.5 148 34.8 28.0 124 SYLVAN ROAD 7120 .0 .4 0 27.3 22.7 120 YOUNTS PEAK 8350 13.8 10.8 128 22.8 21.3 107 ----- ----- Basin wide percent of average 116 120 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.7 .1 1700 17.6 13.5 130 BIG GOOSE 7990 8.3 6.2 134 21.3 15.8 135 BONE SPRINGS DIV 9350 17.1 12.2 140 26.5 21.5 123 BURGESS JUNCTION 7880 14.2 5.9 241 23.0 17.9 128 CLOUD PEAK RESERVOIR 9860 20.7 11.2 185 -M 20.8 * DOME LAKE 8880 11.4 5.7 200 24.9 19.9 125 GRAVE SPRINGS 8550 -M 2.9 * 17.8 15.5 115 HANSEN SAWMILL 8360 -M .7 * -M 13.4 * MIDDLE POWDER 7760 9.1 6.0 152 17.5 18.5 95 POWDER RIVER PASS 9480 9.6 4.3 223 23.5 18.8 125 SUCKER CREEK 8880 17.2 6.5 265 27.6 20.8 133 TIE CREEK 6870 .2 .0 21.1 16.5 128 ----- ----- Basin wide percent of average 188 124 BELLE FOURCHE BLIND PARK 6890 -M .0 * 17.9 17.1 105 COLE CANYON 5910 .0 .0 100 16.2 12.2 133 NORTH RAPID CREEK 6130 -M .0 * 19.0 13.5 141 ----- ----- Basin wide percent of average * 124 UPPER N. PLATTE RIVER COLUMBINE 9160 12.7 5.8 219 35.1 31.7 111 DIVIDE PEAK 8880 13.2 7.0 189 30.0 26.9 112 ELK RIVER 8700 7.2 3.1 232 29.3 25.4 115 JOE WRIGHT 10120 25.2 20.6 122 37.6 34.0 111 NORTH FRENCH CREEK 10130 29.5 28.7 103 38.3 33.4 115 OLD BATTLE 10000 36.1 30.5 118 48.9 43.5 112 SAGE CREEK BASIN 7850 .0 4.1 0 21.2 15.6 136 SOUTH BRUSH CREEK 8440 .1 3.3 3 22.4 23.0 97 TOWER 10500 46.6 47.6 98 51.5 49.1 105 WEBBER SPRINGS 9250 17.1 11.1 154 38.3 34.0 113 WILLOW CREEK PASS 9540 17.7 6.4 277 21.8 18.1 120 ----- ----- Basin wide percent of average 122 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.1 16.6 97 29.6 30.4 97 CASPER MTN. 7900 11.1 6.8 163 25.2 23.2 109 DEADMAN HILL 10220 20.2 14.6 138 27.1 24.0 113 DEER PARK 9700 14.3 13.2 108 27.4 30.1 91 LAPRELE CREEK 8375 .9 1.7 53 20.2 19.4 104 RENO HILL 8400 12.8 5.6 229 29.0 23.9 121 ROACH 9700 15.8 8.9 178 29.1 25.6 114 SAND LAKE 10050 33.2 30.9 107 39.6 33.4 119 SOUTH PASS 9040 9.2 9.2 100 24.0 25.4 94 WINDY PEAK 7900 .8 .5 160 18.3 16.3 112 ----- ----- Basin wide percent of average 124 107 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.5 104 DIVIDE PEAK 8880 13.2 7.0 189 30.0 26.9 112 OLD BATTLE 10000 36.1 30.5 118 48.9 43.5 112 SANDSTONE RS 8150 .6 1.1 55 26.6 24.3 109 WHISKEY PARK 8950 -M 19.7 * 44.2 37.1 119 ----- ----- Basin wide percent of average 129 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.6 4.7 55 17.8 18.0 99 BLIND BULL SUM 8650 24.5 21.3 115 22.2 27.5 81 EAST RIM DIVIDE 7930 .5 4.9 10 14.5 15.6 93 ELKHART PARK G.S. 9400 2.9 6.0 48 15.0 18.4 82 GROS VENTRE SUMMIT 8750 4.8 6.4 75 18.0 17.1 105 GUNSIGHT PASS 9820 7.8 -M * 19.1 -M * KENDALL R.S. 7740 .1 .0 17.1 18.2 94 LOOMIS PARK 8240 2.5 5.5 45 22.2 22.0 101 NEW FORK LAKE 8340 .6 .0 12.2 15.4 79 SNIDER BASIN 8060 .0 3.0 0 16.8 20.0 84 SPRING CREEK DIVIDE 9000 16.7 19.5 86 28.5 32.5 88 TRIPLE PEAK 8500 14.9 10.2 146 35.2 31.3 112 ----- ----- Basin wide percent of average 85 93 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 13.8 16.5 84 HEWINTA 9519 -M 1.6 * 21.6 19.8 109 HICKERSON PARK 9145 .0 .4 0 12.8 12.1 106 HOLE-IN-ROCK 9150 .0 .3 0 13.6 11.7 116 INDIAN CREEK 9425 -M 18.8 * -M 31.9 * KELLEY R.S. 8180 4.6 4.7 98 22.3 25.7 87 STEEL CREEK PARK 10200 18.3 14.9 123 24.2 22.6 107 ----- ----- Basin wide percent of average 113 100 UPPER BEAR RIVER BUG LAKE 7950 8.9 5.5 162 21.4 24.6 87 HAYDEN FORK 9212 .8 3.4 24 29.5 27.8 106 KELLEY R.S. 8180 4.6 4.7 98 22.3 25.7 87 LILY LAKE 9156 2.1 3.1 68 23.2 23.5 99 MONTE CRISTO 8960 18.4 17.0 108 31.7 33.4 95 SALT RIVER SUMMIT 7760 .4 .0 19.8 23.6 84 TRIAL LAKE 9992 13.9 18.5 75 30.0 32.5 92 ----- ----- Basin wide percent of average 93 93 ----------------------------------------------------------------------------- -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 1961-90. 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.