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 28 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.0 .5 800 32.5 26.8 121 COTTONWOOD CREEK 7670 12.2 7.3 167 31.4 35.4 89 GRAND TARGHEE 9260 55.3 -M * 44.0 -M * GRANITE CREEK 6770 3.8 2.5 152 27.8 24.6 113 GRASSY LAKE 7265 24.8 17.4 143 52.4 44.6 117 GROS VENTRE SUMMIT 8750 -M 5.3 * 18.6 17.4 107 GUNSIGHT PASS 9820 7.6 -M * 19.5 -M * LEWIS LAKE DIVIDE 7850 27.4 20.9 131 44.7 45.0 99 PHILLIPS BENCH 8200 23.6 16.5 143 41.9 36.2 116 SALT RIVER SUMMIT 7760 .0 .0 100 20.4 23.8 86 SNAKE RIVER STATION 6920 .0 .0 100 33.2 28.1 118 SPRING CREEK DIVIDE 9000 16.9 17.6 96 29.7 32.8 91 THUMB DIVIDE 7980 4.9 3.8 129 25.5 24.5 104 TOGWOTEE PASS 9580 29.4 23.7 124 37.7 32.3 117 TWO OCEAN PLATEAU 9240 42.9 26.9 159 40.4 35.8 113 WILLOW CREEK 8380 22.8 17.2 133 49.2 42.1 117 ----- ----- Basin wide percent of average 138 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.2 22.1 128 31.2 26.6 117 BLACK BEAR 8170 44.6 29.4 152 51.9 49.8 104 CANYON 7870 8.4 2.6 323 25.7 20.2 127 FISHER CREEK 9100 -M 31.8 * 48.4 46.1 105 MADISON PLATEAU 7750 25.2 11.6 217 39.9 33.8 118 NORTHEAST ENTRANCE 7350 .0 .7 0 -M 17.2 * PARKER PEAK 9400 30.2 20.4 148 -M 22.7 * SYLVAN LAKE 8420 21.3 14.0 152 35.2 28.4 124 THUMB DIVIDE 7980 4.9 3.8 129 25.5 24.5 104 TWO OCEAN PLATEAU 9240 42.9 26.9 159 40.4 35.8 113 WHISKEY CREEK 6800 11.6 2.7 430 31.0 26.9 115 WHITE MILL 8700 28.4 19.9 143 35.0 34.7 101 WOLVERINE 7650 .0 .2 0 20.2 17.9 113 ----- ----- Basin wide percent of average 159 112 WIND RIVER BURROUGHS CREEK 8750 11.6 5.1 227 24.6 22.2 111 COLD SPRINGS 9630 1.8 1.2 150 16.9 16.7 101 DEER PARK 9700 15.0 11.3 133 28.4 30.5 93 HOBBS PARK 10100 16.6 11.8 141 23.3 20.6 113 LITTLE WARM 9370 1.6 3.0 53 19.8 19.7 101 SOUTH PASS 9040 9.6 8.3 116 25.2 25.7 98 ST. LAWRENCE ALT 8620 2.2 .9 244 15.3 14.9 103 TOGWOTEE PASS 9580 29.4 23.7 124 37.7 32.3 117 TOWNSEND CREEK 8700 2.5 2.4 104 19.9 18.5 108 ----- ----- Basin wide percent of average 133 105 BIGHORN BASIN BALD MTN. 9380 20.2 18.6 109 24.3 24.9 98 BEAR TRAP MEADOW 8200 1.1 .0 18.3 13.8 133 BLACKWATER 9780 31.1 26.7 116 33.2 28.4 117 BONE SPRINGS DIV 9350 17.2 10.8 159 26.9 21.9 123 EVENING STAR 9200 30.4 28.5 107 44.3 33.8 131 GRAVE SPRINGS 8550 9.5 2.5 380 18.5 15.8 117 KIRWIN 9550 10.5 7.1 148 21.6 17.1 126 MARQUETTE 8760 9.0 5.5 164 19.9 17.5 114 MIDDLE POWDER 7760 8.3 4.5 184 17.7 18.7 95 OWL CREEK 8975 3.0 .8 375 12.8 10.7 120 POWDER RIVER PASS 9480 9.7 3.4 285 23.9 19.1 125 SHELL CREEK 9580 18.9 12.4 152 24.4 20.1 121 SYLVAN LAKE 8420 21.3 14.0 152 35.2 28.4 124 SYLVAN ROAD 7120 .0 .3 0 27.5 23.0 120 TIMBER CREEK 7950 4.1 1.0 410 17.9 14.0 128 YOUNTS PEAK 8350 13.4 9.5 141 23.4 21.7 108 ----- ----- Basin wide percent of average 142 119 SHOSHONE RIVER BLACKWATER 9780 31.1 26.7 116 33.2 28.4 117 EVENING STAR 9200 30.4 28.5 107 44.3 33.8 131 KIRWIN 9550 10.5 7.1 148 21.6 17.1 126 MARQUETTE 8760 9.0 5.5 164 19.9 17.5 114 SYLVAN LAKE 8420 21.3 14.0 152 35.2 28.4 124 SYLVAN ROAD 7120 .0 .3 0 27.5 23.0 120 YOUNTS PEAK 8350 13.4 9.5 141 23.4 21.7 108 ----- ----- Basin wide percent of average 126 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 .0 18.3 13.8 133 BIG GOOSE 7990 7.7 4.9 157 21.8 16.1 135 BONE SPRINGS DIV 9350 17.2 10.8 159 26.9 21.9 123 BURGESS JUNCTION 7880 13.7 4.7 291 23.4 18.2 129 CLOUD PEAK RESERVOIR 9860 21.5 9.9 217 29.4 21.2 139 DOME LAKE 8880 11.9 4.5 264 25.9 20.2 128 GRAVE SPRINGS 8550 9.5 2.5 380 18.5 15.8 117 HANSEN SAWMILL 8360 5.1 .5 1020 21.6 13.7 158 MIDDLE POWDER 7760 8.3 4.5 184 17.7 18.7 95 POWDER RIVER PASS 9480 9.7 3.4 285 23.9 19.1 125 SUCKER CREEK 8880 17.2 5.2 331 27.9 21.1 132 TIE CREEK 6870 -M .0 * 22.0 16.8 131 ----- ----- Basin wide percent of average 239 128 BELLE FOURCHE BLIND PARK 6890 -M .0 * 18.5 17.4 106 COLE CANYON 5910 .2 .0 17.5 12.5 140 NORTH RAPID CREEK 6130 -M .0 * 19.6 13.7 143 ----- ----- Basin wide percent of average * 128 UPPER N. PLATTE RIVER COLUMBINE 9160 9.6 4.0 240 35.3 31.9 111 DIVIDE PEAK 8880 10.1 5.5 184 30.1 27.2 111 ELK RIVER 8700 3.8 2.2 173 29.5 25.7 115 JOE WRIGHT 10120 24.5 19.2 128 37.9 34.4 110 NORTH FRENCH CREEK 10130 28.7 26.8 107 38.9 33.8 115 OLD BATTLE 10000 35.0 28.5 123 49.1 43.8 112 SAGE CREEK BASIN 7850 .0 3.2 0 21.2 15.8 134 SOUTH BRUSH CREEK 8440 .1 2.5 4 23.1 23.3 99 TOWER 10500 44.3 45.7 97 51.8 49.5 105 WEBBER SPRINGS 9250 15.5 9.0 172 38.5 34.3 112 WILLOW CREEK PASS 9540 15.5 4.9 316 22.0 18.4 120 ----- ----- Basin wide percent of average 123 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.6 14.4 108 30.5 30.7 99 CASPER MTN. 7900 10.2 5.6 182 25.7 23.5 109 DEADMAN HILL 10220 19.3 13.2 146 27.5 24.3 113 DEER PARK 9700 15.0 11.3 133 28.4 30.5 93 LAPRELE CREEK 8375 -M 1.2 * 20.6 19.7 105 RENO HILL 8400 11.8 4.6 257 29.7 24.3 122 ROACH 9700 14.2 7.6 187 29.6 26.0 114 SAND LAKE 10050 33.2 28.9 115 40.2 33.8 119 SOUTH PASS 9040 9.6 8.3 116 25.2 25.7 98 WINDY PEAK 7900 .8 .3 267 18.5 16.6 111 ----- ----- Basin wide percent of average 138 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.4 20.7 103 DIVIDE PEAK 8880 10.1 5.5 184 30.1 27.2 111 OLD BATTLE 10000 35.0 28.5 123 49.1 43.8 112 SANDSTONE RS 8150 .1 .6 17 26.6 24.5 109 WHISKEY PARK 8950 -M 17.1 * -M 37.4 * ----- ----- Basin wide percent of average 131 109 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 3.3 85 18.5 18.3 101 BLIND BULL SUM 8650 24.5 19.9 123 23.3 27.8 84 EAST RIM DIVIDE 7930 .0 3.4 0 15.0 15.8 95 ELKHART PARK G.S. 9400 3.1 4.8 65 15.8 18.7 84 GROS VENTRE SUMMIT 8750 -M 5.3 * 18.6 17.4 107 GUNSIGHT PASS 9820 7.6 -M * 19.5 -M * KENDALL R.S. 7740 .1 .0 17.5 18.4 95 LOOMIS PARK 8240 2.0 4.2 48 22.8 22.2 103 NEW FORK LAKE 8340 .0 .0 100 12.9 15.6 83 SNIDER BASIN 8060 .4 1.5 27 18.2 20.2 90 SPRING CREEK DIVIDE 9000 16.9 17.6 96 29.7 32.8 91 TRIPLE PEAK 8500 15.1 7.9 191 36.5 31.6 116 ----- ----- Basin wide percent of average 104 96 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 14.7 16.7 88 HEWINTA 9519 -M 1.1 * 21.7 20.0 108 HICKERSON PARK 9145 .0 .2 0 12.8 12.3 104 HOLE-IN-ROCK 9150 .0 .1 0 13.7 12.0 114 INDIAN CREEK 9425 19.1 17.1 112 -M 32.2 * KELLEY R.S. 8180 4.6 3.3 139 23.2 25.9 90 STEEL CREEK PARK 10200 18.1 13.6 133 24.4 22.9 107 ----- ----- Basin wide percent of average 122 101 UPPER BEAR RIVER BUG LAKE 7950 7.8 4.1 190 22.4 24.8 90 HAYDEN FORK 9212 .2 2.4 8 29.8 28.1 106 KELLEY R.S. 8180 4.6 3.3 139 23.2 25.9 90 LILY LAKE 9156 .6 2.3 26 23.8 23.8 100 MONTE CRISTO 8960 18.1 15.1 120 32.0 33.7 95 SALT RIVER SUMMIT 7760 .0 .0 100 20.4 23.8 86 TRIAL LAKE 9992 14.2 16.8 85 30.7 32.9 93 ----- ----- Basin wide percent of average 103 94 ----------------------------------------------------------------------------- -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.