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 TUESDAY: MAY 27 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 4.7 1.0 470 32.4 26.7 121 COTTONWOOD CREEK 7670 12.7 7.8 163 31.3 35.3 89 GRAND TARGHEE 9260 55.0 -M * 44.0 -M * GRANITE CREEK 6770 4.3 3.0 143 27.5 24.5 112 GRASSY LAKE 7265 25.6 18.2 141 52.3 44.4 118 GROS VENTRE SUMMIT 8750 5.0 5.7 88 18.6 17.3 108 GUNSIGHT PASS 9820 7.6 -M * 19.4 -M * LEWIS LAKE DIVIDE 7850 28.0 21.6 130 44.7 44.9 100 PHILLIPS BENCH 8200 23.7 17.2 138 41.7 36.1 116 SALT RIVER SUMMIT 7760 .2 .0 20.2 23.8 85 SNAKE RIVER STATION 6920 .0 .0 100 33.3 28.0 119 SPRING CREEK DIVIDE 9000 16.9 18.3 92 29.4 32.7 90 THUMB DIVIDE 7980 5.8 4.3 135 25.5 24.4 105 TOGWOTEE PASS 9580 29.4 24.1 122 37.7 32.2 117 TWO OCEAN PLATEAU 9240 42.9 27.3 157 40.4 35.7 113 WILLOW CREEK 8380 23.0 17.9 128 48.9 41.9 117 ----- ----- Basin wide percent of average 133 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.4 22.6 126 31.1 26.5 117 BLACK BEAR 8170 44.5 30.2 147 51.9 49.7 104 CANYON 7870 9.0 2.9 310 25.7 20.1 128 FISHER CREEK 9100 48.2 32.3 149 48.3 46.0 105 MADISON PLATEAU 7750 25.3 12.3 206 39.9 33.7 118 NORTHEAST ENTRANCE 7350 .1 .7 14 19.3 17.1 113 PARKER PEAK 9400 30.2 20.8 145 -M 22.6 * SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124 THUMB DIVIDE 7980 5.8 4.3 135 25.5 24.4 105 TWO OCEAN PLATEAU 9240 42.9 27.3 157 40.4 35.7 113 WHISKEY CREEK 6800 -M 3.2 * 31.0 26.8 116 WHITE MILL 8700 28.6 20.4 140 34.9 34.6 101 WOLVERINE 7650 .0 .4 0 19.9 17.9 111 ----- ----- Basin wide percent of average 151 112 WIND RIVER BURROUGHS CREEK 8750 11.6 5.5 211 24.4 22.1 110 COLD SPRINGS 9630 1.8 1.2 150 16.8 16.6 101 DEER PARK 9700 14.9 12.0 124 28.3 30.4 93 HOBBS PARK 10100 16.6 12.3 135 23.2 20.5 113 LITTLE WARM 9370 1.5 3.2 47 19.6 19.6 100 SOUTH PASS 9040 9.5 8.4 113 25.0 25.6 98 ST. LAWRENCE ALT 8620 2.2 .9 244 15.3 14.8 103 TOGWOTEE PASS 9580 29.4 24.1 122 37.7 32.2 117 TOWNSEND CREEK 8700 2.4 2.5 96 19.8 18.4 108 ----- ----- Basin wide percent of average 128 105 BIGHORN BASIN BALD MTN. 9380 19.8 19.2 103 23.8 24.8 96 BEAR TRAP MEADOW 8200 1.1 .1 1100 18.0 13.7 131 BLACKWATER 9780 30.9 27.0 114 33.1 28.2 117 BONE SPRINGS DIV 9350 17.2 11.4 151 26.6 21.7 123 EVENING STAR 9200 30.3 28.9 105 44.2 33.7 131 GRAVE SPRINGS 8550 9.3 2.7 344 18.3 15.7 117 KIRWIN 9550 10.3 7.5 137 21.4 17.0 126 MARQUETTE 8760 9.0 5.8 155 19.7 17.4 113 MIDDLE POWDER 7760 8.5 5.0 170 17.6 18.6 95 OWL CREEK 8975 3.0 .9 333 12.8 10.6 121 POWDER RIVER PASS 9480 9.7 3.6 269 23.7 19.0 125 SHELL CREEK 9580 18.8 12.8 147 24.2 20.0 121 SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124 SYLVAN ROAD 7120 .0 .3 0 27.5 22.9 120 TIMBER CREEK 7950 4.1 1.1 373 17.8 13.8 129 YOUNTS PEAK 8350 13.8 10.0 138 23.5 21.6 109 ----- ----- Basin wide percent of average 138 118 SHOSHONE RIVER BLACKWATER 9780 30.9 27.0 114 33.1 28.2 117 EVENING STAR 9200 30.3 28.9 105 44.2 33.7 131 KIRWIN 9550 10.3 7.5 137 21.4 17.0 126 MARQUETTE 8760 9.0 5.8 155 19.7 17.4 113 SYLVAN LAKE 8420 22.3 14.5 154 35.2 28.3 124 SYLVAN ROAD 7120 .0 .3 0 27.5 22.9 120 YOUNTS PEAK 8350 13.8 10.0 138 23.5 21.6 109 ----- ----- Basin wide percent of average 124 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 1.1 .1 1100 18.0 13.7 131 BIG GOOSE 7990 7.8 5.4 144 21.6 16.0 135 BONE SPRINGS DIV 9350 17.2 11.4 151 26.6 21.7 123 BURGESS JUNCTION 7880 -M 5.1 * 23.3 18.1 129 CLOUD PEAK RESERVOIR 9860 21.2 10.5 202 -M 21.1 * DOME LAKE 8880 11.6 4.9 237 25.4 20.1 126 GRAVE SPRINGS 8550 9.3 2.7 344 18.3 15.7 117 HANSEN SAWMILL 8360 -M .5 * -M 13.6 * MIDDLE POWDER 7760 8.5 5.0 170 17.6 18.6 95 POWDER RIVER PASS 9480 9.7 3.6 269 23.7 19.0 125 SUCKER CREEK 8880 17.3 5.6 309 27.7 21.0 132 TIE CREEK 6870 .0 .0 100 21.9 16.7 131 ----- ----- Basin wide percent of average 211 124 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 18.4 17.3 106 COLE CANYON 5910 .1 .0 17.1 12.4 138 NORTH RAPID CREEK 6130 .1 .0 19.5 13.6 143 ----- ----- Basin wide percent of average * 127 UPPER N. PLATTE RIVER COLUMBINE 9160 10.7 4.6 233 35.3 31.8 111 DIVIDE PEAK 8880 11.4 6.0 190 30.1 27.1 111 ELK RIVER 8700 5.3 2.4 221 29.3 25.6 114 JOE WRIGHT 10120 24.8 19.7 126 38.0 34.2 111 NORTH FRENCH CREEK 10130 29.1 27.5 106 38.9 33.7 115 OLD BATTLE 10000 35.7 29.2 122 49.1 43.7 112 SAGE CREEK BASIN 7850 .0 3.5 0 21.2 15.7 135 SOUTH BRUSH CREEK 8440 .1 2.8 4 22.8 23.2 98 TOWER 10500 45.2 46.4 97 51.7 49.4 105 WEBBER SPRINGS 9250 16.1 9.7 166 38.5 34.2 113 WILLOW CREEK PASS 9540 16.4 5.4 304 21.8 18.3 119 ----- ----- Basin wide percent of average 124 112 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 16.0 15.1 106 30.2 30.6 99 CASPER MTN. 7900 10.7 6.0 178 25.7 23.4 110 DEADMAN HILL 10220 19.7 13.7 144 27.4 24.2 113 DEER PARK 9700 14.9 12.0 124 28.3 30.4 93 LAPRELE CREEK 8375 .1 1.4 7 20.6 19.6 105 RENO HILL 8400 12.4 4.9 253 29.5 24.2 122 ROACH 9700 14.7 8.0 184 29.5 25.9 114 SAND LAKE 10050 33.5 29.6 113 40.1 33.6 119 SOUTH PASS 9040 9.5 8.4 113 25.0 25.6 98 WINDY PEAK 7900 .8 .4 200 18.5 16.5 112 ----- ----- Basin wide percent of average 133 108 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.3 20.6 103 DIVIDE PEAK 8880 11.4 6.0 190 30.1 27.1 111 OLD BATTLE 10000 35.7 29.2 122 49.1 43.7 112 SANDSTONE RS 8150 .0 .8 0 26.6 24.4 109 WHISKEY PARK 8950 36.3 18.0 202 44.2 37.3 118 ----- ----- Basin wide percent of average 154 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 2.8 3.8 74 18.5 18.2 102 BLIND BULL SUM 8650 24.5 20.3 121 23.2 27.7 84 EAST RIM DIVIDE 7930 .0 3.9 0 14.9 15.7 95 ELKHART PARK G.S. 9400 3.0 5.2 58 15.6 18.6 84 GROS VENTRE SUMMIT 8750 5.0 5.7 88 18.6 17.3 108 GUNSIGHT PASS 9820 7.6 -M * 19.4 -M * KENDALL R.S. 7740 .1 .0 17.3 18.3 95 LOOMIS PARK 8240 2.1 4.6 46 22.6 22.1 102 NEW FORK LAKE 8340 .1 .0 12.8 15.5 83 SNIDER BASIN 8060 .5 2.0 25 17.9 20.2 89 SPRING CREEK DIVIDE 9000 16.9 18.3 92 29.4 32.7 90 TRIPLE PEAK 8500 15.2 8.7 175 36.3 31.5 115 ----- ----- Basin wide percent of average 97 96 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 14.5 16.7 87 HEWINTA 9519 -M 1.3 * 21.7 19.9 109 HICKERSON PARK 9145 .0 .2 0 12.8 12.3 104 HOLE-IN-ROCK 9150 .0 .2 0 13.7 11.9 115 INDIAN CREEK 9425 -M 17.7 * -M 32.1 * KELLEY R.S. 8180 4.5 3.8 118 22.9 25.8 89 STEEL CREEK PARK 10200 18.4 14.1 130 24.4 22.8 107 ----- ----- Basin wide percent of average 125 101 UPPER BEAR RIVER BUG LAKE 7950 8.5 4.6 185 21.9 24.8 88 HAYDEN FORK 9212 .2 2.7 7 29.8 28.0 106 KELLEY R.S. 8180 4.5 3.8 118 22.9 25.8 89 LILY LAKE 9156 1.7 2.5 68 23.4 23.7 99 MONTE CRISTO 8960 18.3 15.7 117 31.9 33.6 95 SALT RIVER SUMMIT 7760 .2 .0 20.2 23.8 85 TRIAL LAKE 9992 14.4 17.4 83 30.6 32.8 93 ----- ----- Basin wide percent of average 102 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.