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 FRIDAY: MAY 23 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 6.8 2.8 243 32.2 26.3 122 COTTONWOOD CREEK 7670 14.0 9.9 141 30.5 34.8 88 GRAND TARGHEE 9260 54.3 -M * 43.0 -M * GRANITE CREEK 6770 6.1 4.6 133 26.6 24.2 110 GRASSY LAKE 7265 27.0 21.2 127 50.9 43.9 116 GROS VENTRE SUMMIT 8750 5.0 7.2 69 18.0 17.0 106 GUNSIGHT PASS 9820 7.6 -M * 18.9 -M * LEWIS LAKE DIVIDE 7850 -M 24.3 * -M 44.4 * PHILLIPS BENCH 8200 23.1 19.6 118 40.4 35.7 113 SALT RIVER SUMMIT 7760 .7 1.0 70 19.5 23.4 83 SNAKE RIVER STATION 6920 3.3 1.6 206 32.5 27.6 118 SPRING CREEK DIVIDE 9000 16.7 20.6 81 28.2 32.4 87 THUMB DIVIDE 7980 7.2 6.2 116 24.8 24.1 103 TOGWOTEE PASS 9580 28.7 25.5 113 36.8 31.7 116 TWO OCEAN PLATEAU 9240 42.3 28.7 147 39.5 35.2 112 WILLOW CREEK 8380 22.7 20.6 110 47.7 41.4 115 ----- ----- Basin wide percent of average 120 108 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.0 23.8 118 30.6 26.1 117 BLACK BEAR 8170 43.6 32.7 133 50.6 49.1 103 CANYON 7870 10.8 4.0 270 25.2 19.7 128 FISHER CREEK 9100 45.0 33.7 134 47.2 45.4 104 MADISON PLATEAU 7750 25.8 14.9 173 39.0 33.2 117 NORTHEAST ENTRANCE 7350 .8 1.2 67 18.7 16.8 111 PARKER PEAK 9400 29.4 22.1 133 -M 22.1 * SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122 THUMB DIVIDE 7980 7.2 6.2 116 24.8 24.1 103 TWO OCEAN PLATEAU 9240 42.3 28.7 147 39.5 35.2 112 WHISKEY CREEK 6800 14.3 5.5 260 30.1 26.4 114 WHITE MILL 8700 28.2 22.1 128 34.1 34.1 100 WOLVERINE 7650 -M .9 * -M 17.5 * ----- ----- Basin wide percent of average 141 111 WIND RIVER BURROUGHS CREEK 8750 10.8 7.1 152 23.1 21.7 106 COLD SPRINGS 9630 1.1 1.6 69 15.6 16.3 96 DEER PARK 9700 13.6 14.7 93 26.7 29.9 89 HOBBS PARK 10100 15.3 14.1 109 21.5 20.0 108 LITTLE WARM 9370 1.4 4.4 32 19.0 19.2 99 SOUTH PASS 9040 8.6 9.8 88 23.5 25.3 93 ST. LAWRENCE ALT 8620 1.4 1.4 100 13.8 14.4 96 TOGWOTEE PASS 9580 28.7 25.5 113 36.8 31.7 116 TOWNSEND CREEK 8700 1.5 3.3 45 18.2 18.0 101 ----- ----- Basin wide percent of average 101 101 BIGHORN BASIN BALD MTN. 9380 17.4 20.8 84 21.6 24.4 89 BEAR TRAP MEADOW 8200 .6 .0 16.2 13.3 122 BLACKWATER 9780 29.6 28.1 105 32.0 27.7 116 BONE SPRINGS DIV 9350 15.4 13.0 118 25.0 21.3 117 EVENING STAR 9200 28.8 30.3 95 42.7 33.1 129 GRAVE SPRINGS 8550 -M 3.2 * -M 15.4 * KIRWIN 9550 9.6 8.8 109 20.4 16.6 123 MARQUETTE 8760 -M 6.6 * 18.5 16.9 109 MIDDLE POWDER 7760 8.5 6.8 125 16.2 18.3 89 OWL CREEK 8975 -M 1.2 * 11.4 10.3 111 POWDER RIVER PASS 9480 8.2 5.0 164 21.8 18.6 117 SHELL CREEK 9580 17.1 14.1 121 22.3 19.5 114 SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122 SYLVAN ROAD 7120 .3 .5 60 26.4 22.5 117 TIMBER CREEK 7950 -M 1.2 * 16.0 13.4 119 YOUNTS PEAK 8350 13.7 11.9 115 22.5 21.1 107 ----- ----- Basin wide percent of average 107 114 SHOSHONE RIVER BLACKWATER 9780 29.6 28.1 105 32.0 27.7 116 EVENING STAR 9200 28.8 30.3 95 42.7 33.1 129 KIRWIN 9550 9.6 8.8 109 20.4 16.6 123 MARQUETTE 8760 -M 6.6 * 18.5 16.9 109 SYLVAN LAKE 8420 -M 16.5 * 33.9 27.7 122 SYLVAN ROAD 7120 .3 .5 60 26.4 22.5 117 YOUNTS PEAK 8350 13.7 11.9 115 22.5 21.1 107 ----- ----- Basin wide percent of average 103 119 POWDER-TONGUE BEAR TRAP MEADOW 8200 .6 .0 16.2 13.3 122 BIG GOOSE 7990 -M 6.9 * -M 15.6 * BONE SPRINGS DIV 9350 15.4 13.0 118 25.0 21.3 117 BURGESS JUNCTION 7880 14.0 6.7 209 22.0 17.8 124 CLOUD PEAK RESERVOIR 9860 -M 12.0 * -M 20.5 * DOME LAKE 8880 10.3 6.8 151 23.7 19.7 120 GRAVE SPRINGS 8550 -M 3.2 * -M 15.4 * HANSEN SAWMILL 8360 -M .8 * -M 13.2 * MIDDLE POWDER 7760 8.5 6.8 125 16.2 18.3 89 POWDER RIVER PASS 9480 8.2 5.0 164 21.8 18.6 117 SUCKER CREEK 8880 16.4 7.2 228 26.5 20.5 129 TIE CREEK 6870 .7 .1 700 19.8 16.3 121 ----- ----- Basin wide percent of average 161 117 BELLE FOURCHE BLIND PARK 6890 -M .0 * 17.0 16.9 101 COLE CANYON 5910 .0 .0 100 14.8 12.0 123 NORTH RAPID CREEK 6130 .0 .1 0 17.7 13.3 133 ----- ----- Basin wide percent of average 0 117 UPPER N. PLATTE RIVER COLUMBINE 9160 13.5 7.2 188 35.1 31.5 111 DIVIDE PEAK 8880 13.2 8.1 163 29.3 26.7 110 ELK RIVER 8700 7.4 3.8 195 28.7 25.3 113 JOE WRIGHT 10120 -M 21.4 * -M 33.7 * NORTH FRENCH CREEK 10130 29.4 29.9 98 38.1 33.2 115 OLD BATTLE 10000 35.4 31.7 112 48.1 43.2 111 SAGE CREEK BASIN 7850 .0 4.7 0 20.8 15.5 134 SOUTH BRUSH CREEK 8440 .2 3.8 5 22.1 22.8 97 TOWER 10500 46.7 48.7 96 51.3 48.9 105 WEBBER SPRINGS 9250 17.9 12.5 143 38.0 33.9 112 WILLOW CREEK PASS 9540 17.8 7.4 241 21.6 17.9 121 ----- ----- Basin wide percent of average 115 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.7 18.0 87 29.0 30.2 96 CASPER MTN. 7900 9.8 7.7 127 23.2 22.9 101 DEADMAN HILL 10220 20.4 15.4 132 27.0 23.8 113 DEER PARK 9700 13.6 14.7 93 26.7 29.9 89 LAPRELE CREEK 8375 .3 2.0 15 18.6 19.2 97 RENO HILL 8400 11.9 6.3 189 27.5 23.7 116 ROACH 9700 16.4 9.7 169 28.9 25.4 114 SAND LAKE 10050 32.6 32.2 101 39.0 33.1 118 SOUTH PASS 9040 8.6 9.8 88 23.5 25.3 93 WINDY PEAK 7900 1.0 .7 143 16.9 16.1 105 ----- ----- Basin wide percent of average 112 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 21.0 20.4 103 DIVIDE PEAK 8880 13.2 8.1 163 29.3 26.7 110 OLD BATTLE 10000 35.4 31.7 112 48.1 43.2 111 SANDSTONE RS 8150 1.6 1.5 107 26.3 24.1 109 WHISKEY PARK 8950 33.8 21.3 159 43.8 36.9 119 ----- ----- Basin wide percent of average 134 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 1.9 5.6 34 17.1 17.9 96 BLIND BULL SUM 8650 24.7 22.1 112 21.7 27.3 79 EAST RIM DIVIDE 7930 .8 5.8 14 14.3 15.5 92 ELKHART PARK G.S. 9400 2.5 6.7 37 14.6 18.2 80 GROS VENTRE SUMMIT 8750 5.0 7.2 69 18.0 17.0 106 GUNSIGHT PASS 9820 7.6 -M * 18.9 -M * KENDALL R.S. 7740 .2 .0 16.6 18.1 92 LOOMIS PARK 8240 2.3 6.4 36 21.8 21.8 100 NEW FORK LAKE 8340 .7 .8 87 12.0 15.2 79 SNIDER BASIN 8060 .6 4.0 15 16.7 19.9 84 SPRING CREEK DIVIDE 9000 16.7 20.6 81 28.2 32.4 87 TRIPLE PEAK 8500 14.8 11.7 126 34.8 31.1 112 ----- ----- Basin wide percent of average 77 92 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 13.6 16.4 83 HEWINTA 9519 .0 2.1 0 21.5 19.7 109 HICKERSON PARK 9145 .3 .6 50 12.7 12.0 106 HOLE-IN-ROCK 9150 .9 .5 180 13.5 11.6 116 INDIAN CREEK 9425 -M 19.9 * -M 31.7 * KELLEY R.S. 8180 4.7 5.6 84 22.1 25.5 87 STEEL CREEK PARK 10200 -M 15.7 * -M 22.4 * ----- ----- Basin wide percent of average 67 98 UPPER BEAR RIVER BUG LAKE 7950 -M 6.5 * -M 24.4 * HAYDEN FORK 9212 1.5 4.1 37 29.2 27.6 106 KELLEY R.S. 8180 4.7 5.6 84 22.1 25.5 87 LILY LAKE 9156 -M 3.7 * -M 23.3 * MONTE CRISTO 8960 18.7 18.2 103 31.7 33.2 95 SALT RIVER SUMMIT 7760 .7 1.0 70 19.5 23.4 83 TRIAL LAKE 9992 -M 19.5 * -M 32.3 * ----- ----- Basin wide percent of average 89 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.