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 24 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.2 2.4 258 32.2 26.4 122 COTTONWOOD CREEK 7670 13.8 9.4 147 30.6 35.0 87 GRAND TARGHEE 9260 54.1 -M * 43.3 -M * GRANITE CREEK 6770 5.9 4.2 140 26.9 24.3 111 GRASSY LAKE 7265 26.9 20.5 131 51.0 44.0 116 GROS VENTRE SUMMIT 8750 4.9 6.8 72 18.0 17.0 106 GUNSIGHT PASS 9820 7.6 -M * 19.0 -M * LEWIS LAKE DIVIDE 7850 28.1 23.6 119 43.1 44.5 97 PHILLIPS BENCH 8200 23.1 19.0 122 40.5 35.8 113 SALT RIVER SUMMIT 7760 .6 .5 120 19.8 23.5 84 SNAKE RIVER STATION 6920 2.2 1.1 200 32.5 27.7 117 SPRING CREEK DIVIDE 9000 16.7 20.1 83 28.3 32.5 87 THUMB DIVIDE 7980 6.5 5.7 114 24.8 24.2 102 TOGWOTEE PASS 9580 28.7 25.1 114 36.9 31.9 116 TWO OCEAN PLATEAU 9240 42.2 28.4 149 39.5 35.3 112 WILLOW CREEK 8380 22.8 19.9 115 47.8 41.5 115 ----- ----- Basin wide percent of average 122 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.0 23.5 119 30.6 26.2 117 BLACK BEAR 8170 44.0 32.1 137 50.6 49.2 103 CANYON 7870 10.3 3.8 271 25.2 19.8 127 FISHER CREEK 9100 44.0 33.2 133 47.5 45.5 104 MADISON PLATEAU 7750 25.6 14.2 180 39.0 33.3 117 NORTHEAST ENTRANCE 7350 .1 1.0 10 18.7 16.8 111 PARKER PEAK 9400 29.4 21.7 135 -M 22.3 * SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121 THUMB DIVIDE 7980 6.5 5.7 114 24.8 24.2 102 TWO OCEAN PLATEAU 9240 42.2 28.4 149 39.5 35.3 112 WHISKEY CREEK 6800 13.9 5.0 278 30.3 26.5 114 WHITE MILL 8700 28.1 21.7 129 34.2 34.2 100 WOLVERINE 7650 .5 .7 71 19.5 17.6 111 ----- ----- Basin wide percent of average 142 110 WIND RIVER BURROUGHS CREEK 8750 10.9 6.7 163 23.2 21.8 106 COLD SPRINGS 9630 1.3 1.5 87 15.8 16.4 96 DEER PARK 9700 13.8 13.8 100 26.9 30.0 90 HOBBS PARK 10100 15.4 13.6 113 21.7 20.1 108 LITTLE WARM 9370 1.7 4.2 40 19.1 19.3 99 SOUTH PASS 9040 8.9 9.5 94 23.6 25.4 93 ST. LAWRENCE ALT 8620 1.7 1.2 142 14.0 14.5 97 TOGWOTEE PASS 9580 28.7 25.1 114 36.9 31.9 116 TOWNSEND CREEK 8700 1.9 3.0 63 18.5 18.1 102 ----- ----- Basin wide percent of average 107 101 BIGHORN BASIN BALD MTN. 9380 18.0 20.2 89 22.2 24.5 91 BEAR TRAP MEADOW 8200 1.1 .0 16.9 13.4 126 BLACKWATER 9780 29.7 27.9 106 32.1 27.8 115 BONE SPRINGS DIV 9350 15.9 12.6 126 25.4 21.4 119 EVENING STAR 9200 29.1 29.9 97 42.9 33.2 129 GRAVE SPRINGS 8550 8.2 3.0 273 17.0 15.4 110 KIRWIN 9550 9.7 8.5 114 20.6 16.7 123 MARQUETTE 8760 7.6 6.4 119 18.8 17.0 111 MIDDLE POWDER 7760 8.1 6.3 129 16.5 18.4 90 OWL CREEK 8975 2.2 1.2 183 11.6 10.4 112 POWDER RIVER PASS 9480 8.9 4.6 193 22.7 18.7 121 SHELL CREEK 9580 17.4 13.7 127 22.8 19.6 116 SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121 SYLVAN ROAD 7120 .0 .4 0 26.3 22.6 116 TIMBER CREEK 7950 3.1 1.2 258 16.1 13.5 119 YOUNTS PEAK 8350 13.8 11.3 122 22.7 21.2 107 ----- ----- Basin wide percent of average 118 115 SHOSHONE RIVER BLACKWATER 9780 29.7 27.9 106 32.1 27.8 115 EVENING STAR 9200 29.1 29.9 97 42.9 33.2 129 KIRWIN 9550 9.7 8.5 114 20.6 16.7 123 MARQUETTE 8760 7.6 6.4 119 18.8 17.0 111 SYLVAN LAKE 8420 21.5 16.0 134 33.8 27.9 121 SYLVAN ROAD 7120 .0 .4 0 26.3 22.6 116 YOUNTS PEAK 8350 13.8 11.3 122 22.7 21.2 107 ----- ----- Basin wide percent of average 111 119 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 .0 16.9 13.4 126 BIG GOOSE 7990 8.3 6.6 126 -M 15.7 * BONE SPRINGS DIV 9350 15.9 12.6 126 25.4 21.4 119 BURGESS JUNCTION 7880 13.9 6.4 217 22.4 17.9 125 CLOUD PEAK RESERVOIR 9860 20.1 11.5 175 -M 20.6 * DOME LAKE 8880 10.8 6.2 174 24.3 19.8 123 GRAVE SPRINGS 8550 8.2 3.0 273 17.0 15.4 110 HANSEN SAWMILL 8360 -M .8 * -M 13.3 * MIDDLE POWDER 7760 8.1 6.3 129 16.5 18.4 90 POWDER RIVER PASS 9480 8.9 4.6 193 22.7 18.7 121 SUCKER CREEK 8880 16.8 6.8 247 27.0 20.6 131 TIE CREEK 6870 .3 .0 20.5 16.4 125 ----- ----- Basin wide percent of average 173 119 BELLE FOURCHE BLIND PARK 6890 -M .0 * 17.3 17.0 102 COLE CANYON 5910 .0 .0 100 15.3 12.1 126 NORTH RAPID CREEK 6130 .1 .0 18.5 13.4 138 ----- ----- Basin wide percent of average * 120 UPPER N. PLATTE RIVER COLUMBINE 9160 13.0 6.5 200 35.1 31.6 111 DIVIDE PEAK 8880 13.4 7.6 176 29.9 26.8 112 ELK RIVER 8700 7.0 3.4 206 28.9 25.3 114 JOE WRIGHT 10120 25.3 21.0 120 37.5 33.8 111 NORTH FRENCH CREEK 10130 29.4 29.3 100 38.2 33.3 115 OLD BATTLE 10000 35.8 31.1 115 48.6 43.3 112 SAGE CREEK BASIN 7850 .0 4.4 0 21.1 15.5 136 SOUTH BRUSH CREEK 8440 .1 3.6 3 22.3 22.9 97 TOWER 10500 46.7 48.2 97 51.4 49.0 105 WEBBER SPRINGS 9250 17.2 11.8 146 38.1 34.0 112 WILLOW CREEK PASS 9540 17.8 6.9 258 21.7 18.0 121 ----- ----- Basin wide percent of average 118 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.1 17.3 93 29.4 30.3 97 CASPER MTN. 7900 10.1 7.2 140 23.7 23.1 103 DEADMAN HILL 10220 20.3 15.0 135 27.1 23.9 113 DEER PARK 9700 13.8 13.8 100 26.9 30.0 90 LAPRELE CREEK 8375 .0 1.8 0 19.1 19.3 99 RENO HILL 8400 12.2 6.0 203 28.0 23.8 118 ROACH 9700 16.0 9.3 172 29.0 25.5 114 SAND LAKE 10050 33.1 31.6 105 39.6 33.2 119 SOUTH PASS 9040 8.9 9.5 94 23.6 25.4 93 WINDY PEAK 7900 1.0 .6 167 18.0 16.2 111 ----- ----- Basin wide percent of average 117 105 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.5 104 DIVIDE PEAK 8880 13.4 7.6 176 29.9 26.8 112 OLD BATTLE 10000 35.8 31.1 115 48.6 43.3 112 SANDSTONE RS 8150 1.2 1.3 92 26.5 24.2 110 WHISKEY PARK 8950 -M 20.5 * 44.1 37.0 119 ----- ----- Basin wide percent of average 126 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.1 5.2 40 17.3 18.0 96 BLIND BULL SUM 8650 24.5 21.7 113 22.1 27.4 81 EAST RIM DIVIDE 7930 .7 5.3 13 14.4 15.5 93 ELKHART PARK G.S. 9400 2.7 6.4 42 14.9 18.3 81 GROS VENTRE SUMMIT 8750 4.9 6.8 72 18.0 17.0 106 GUNSIGHT PASS 9820 7.6 -M * 19.0 -M * KENDALL R.S. 7740 .1 .0 16.8 18.1 93 LOOMIS PARK 8240 2.6 5.9 44 22.0 21.9 100 NEW FORK LAKE 8340 .8 .4 200 12.1 15.3 79 SNIDER BASIN 8060 .2 3.5 6 16.8 20.0 84 SPRING CREEK DIVIDE 9000 16.7 20.1 83 28.3 32.5 87 TRIPLE PEAK 8500 14.9 11.0 135 35.0 31.2 112 ----- ----- Basin wide percent of average 81 93 LOWER GREEN RIVER HAMS FORK 7840 .1 .0 13.8 16.5 84 HEWINTA 9519 .0 1.8 0 21.6 19.7 110 HICKERSON PARK 9145 .0 .5 0 12.8 12.0 107 HOLE-IN-ROCK 9150 .7 .4 175 13.6 11.6 117 INDIAN CREEK 9425 -M 19.3 * -M 31.8 * KELLEY R.S. 8180 4.7 5.2 90 22.2 25.6 87 STEEL CREEK PARK 10200 18.2 15.3 119 24.2 22.5 108 ----- ----- Basin wide percent of average 102 100 UPPER BEAR RIVER BUG LAKE 7950 9.5 6.0 158 21.2 24.5 87 HAYDEN FORK 9212 1.4 3.7 38 29.4 27.7 106 KELLEY R.S. 8180 4.7 5.2 90 22.2 25.6 87 LILY LAKE 9156 2.3 3.4 68 23.0 23.4 98 MONTE CRISTO 8960 18.6 17.6 106 31.7 33.3 95 SALT RIVER SUMMIT 7760 .6 .5 120 19.8 23.5 84 TRIAL LAKE 9992 13.8 19.0 73 29.9 32.4 92 ----- ----- Basin wide percent of average 92 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.