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 10 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 14.9 8.7 171 30.6 25.2 121 COTTONWOOD CREEK 7670 22.1 16.2 136 29.6 33.2 89 GRAND TARGHEE 9260 56.9 -M * 40.0 -M * GRANITE CREEK 6770 14.2 9.7 146 25.4 23.1 110 GRASSY LAKE 7265 -M 29.3 * 48.9 42.2 116 GROS VENTRE SUMMIT 8750 12.6 11.3 112 16.6 16.0 104 GUNSIGHT PASS 9820 12.5 -M * 17.6 -M * LEWIS LAKE DIVIDE 7850 39.0 31.4 124 41.5 42.8 97 PHILLIPS BENCH 8200 32.1 26.4 122 38.8 34.2 113 SALT RIVER SUMMIT 7760 10.5 7.1 148 18.6 22.4 83 SNAKE RIVER STATION 6920 14.4 8.2 176 31.2 26.4 118 SPRING CREEK DIVIDE 9000 23.7 26.6 89 27.2 31.1 87 THUMB DIVIDE 7980 15.1 11.7 129 23.4 22.9 102 TOGWOTEE PASS 9580 30.7 28.0 110 34.7 30.2 115 TWO OCEAN PLATEAU 9240 43.1 31.4 137 37.0 33.4 111 WILLOW CREEK 8380 30.4 27.6 110 45.4 39.3 116 ----- ----- Basin wide percent of average 124 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.7 25.9 111 27.9 24.6 113 BLACK BEAR 8170 -M 38.1 * 48.3 47.3 102 CANYON 7870 16.6 8.6 193 23.8 18.5 129 FISHER CREEK 9100 47.0 37.4 126 44.2 43.4 102 MADISON PLATEAU 7750 30.7 21.5 143 36.9 31.5 117 NORTHEAST ENTRANCE 7350 6.1 5.0 122 16.0 15.6 103 PARKER PEAK 9400 32.0 24.4 131 -M 20.6 * SYLVAN LAKE 8420 21.2 21.8 97 31.0 25.9 120 THUMB DIVIDE 7980 15.1 11.7 129 23.4 22.9 102 TWO OCEAN PLATEAU 9240 43.1 31.4 137 37.0 33.4 111 WHISKEY CREEK 6800 19.1 12.1 158 28.5 25.1 114 WHITE MILL 8700 32.0 25.8 124 31.6 32.4 98 WOLVERINE 7650 -M 4.7 * 16.5 16.1 102 ----- ----- Basin wide percent of average 129 108 WIND RIVER BURROUGHS CREEK 8750 16.0 11.4 140 21.2 20.3 104 COLD SPRINGS 9630 1.4 4.2 33 12.3 15.0 82 DEER PARK 9700 15.6 16.3 96 23.8 28.1 85 HOBBS PARK 10100 16.5 17.3 95 18.6 18.3 102 LITTLE WARM 9370 8.9 8.9 100 17.2 17.9 96 SOUTH PASS 9040 13.5 15.7 86 20.7 23.9 87 ST. LAWRENCE ALT 8620 2.5 4.8 52 10.4 13.2 79 TOGWOTEE PASS 9580 30.7 28.0 110 34.7 30.2 115 TOWNSEND CREEK 8700 6.6 7.0 94 15.1 16.6 91 ----- ----- Basin wide percent of average 98 95 BIGHORN BASIN BALD MTN. 9380 20.1 23.6 85 19.2 22.7 85 BEAR TRAP MEADOW 8200 5.1 1.4 364 12.2 11.9 103 BLACKWATER 9780 30.3 28.7 106 28.6 26.0 110 BONE SPRINGS DIV 9350 21.0 17.2 122 22.2 19.6 113 EVENING STAR 9200 32.1 33.2 97 39.2 31.2 126 GRAVE SPRINGS 8550 11.6 9.6 121 13.9 14.2 98 KIRWIN 9550 12.7 12.1 105 17.0 15.2 112 MARQUETTE 8760 9.4 9.9 95 13.7 15.1 91 MIDDLE POWDER 7760 15.1 12.4 122 13.7 16.9 81 OWL CREEK 8975 .1 3.1 3 8.7 9.1 96 POWDER RIVER PASS 9480 12.4 9.2 135 18.2 17.0 107 SHELL CREEK 9580 18.9 16.9 112 19.9 18.0 111 SYLVAN LAKE 8420 21.2 21.8 97 31.0 25.9 120 SYLVAN ROAD 7120 6.3 4.8 131 23.7 21.4 111 TIMBER CREEK 7950 3.5 3.3 106 11.4 11.8 97 YOUNTS PEAK 8350 17.3 16.8 103 19.9 19.7 101 ----- ----- Basin wide percent of average 106 106 SHOSHONE RIVER BLACKWATER 9780 30.3 28.7 106 28.6 26.0 110 EVENING STAR 9200 32.1 33.2 97 39.2 31.2 126 KIRWIN 9550 12.7 12.1 105 17.0 15.2 112 MARQUETTE 8760 9.4 9.9 95 13.7 15.1 91 SYLVAN LAKE 8420 21.2 21.8 97 31.0 25.9 120 SYLVAN ROAD 7120 6.3 4.8 131 23.7 21.4 111 YOUNTS PEAK 8350 17.3 16.8 103 19.9 19.7 101 ----- ----- Basin wide percent of average 102 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.1 1.4 364 12.2 11.9 103 BIG GOOSE 7990 11.3 10.1 112 16.8 14.2 118 BONE SPRINGS DIV 9350 21.0 17.2 122 22.2 19.6 113 BURGESS JUNCTION 7880 16.5 11.7 141 18.9 16.5 115 CLOUD PEAK RESERVOIR 9860 19.8 15.6 127 20.7 18.6 111 DOME LAKE 8880 13.1 11.6 113 19.8 18.1 109 GRAVE SPRINGS 8550 11.6 9.6 121 13.9 14.2 98 HANSEN SAWMILL 8360 3.6 3.5 103 12.3 11.9 103 MIDDLE POWDER 7760 15.1 12.4 122 13.7 16.9 81 POWDER RIVER PASS 9480 12.4 9.2 135 18.2 17.0 107 SUCKER CREEK 8880 17.5 11.6 151 22.4 18.8 119 TIE CREEK 6870 6.1 2.5 244 16.2 14.7 110 ----- ----- Basin wide percent of average 132 108 BELLE FOURCHE BLIND PARK 6890 2.2 1.6 138 16.1 15.3 105 COLE CANYON 5910 4.8 1.7 282 13.7 10.7 128 NORTH RAPID CREEK 6130 7.1 1.3 546 16.0 12.3 130 ----- ----- Basin wide percent of average 307 120 UPPER N. PLATTE RIVER COLUMBINE 9160 22.5 16.3 138 34.0 30.2 113 DIVIDE PEAK 8880 20.9 15.5 135 28.0 25.3 111 ELK RIVER 8700 17.8 10.3 173 27.8 24.0 116 JOE WRIGHT 10120 29.2 24.7 118 35.6 31.6 113 NORTH FRENCH CREEK 10130 34.2 34.2 100 36.3 31.3 116 OLD BATTLE 10000 39.0 36.8 106 46.6 41.4 113 SAGE CREEK BASIN 7850 9.3 9.0 103 19.9 14.7 135 SOUTH BRUSH CREEK 8440 6.7 8.3 81 20.8 21.3 98 TOWER 10500 50.2 52.3 96 49.2 46.9 105 WEBBER SPRINGS 9250 25.1 21.2 118 36.8 32.4 114 WILLOW CREEK PASS 9540 21.5 12.8 168 20.6 16.6 124 ----- ----- Basin wide percent of average 114 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 21.1 25.7 82 27.2 28.4 96 CASPER MTN. 7900 15.6 14.1 111 19.7 21.0 94 DEADMAN HILL 10220 21.0 19.1 110 24.7 22.2 111 DEER PARK 9700 15.6 16.3 96 23.8 28.1 85 LAPRELE CREEK 8375 4.6 4.8 96 15.6 17.6 89 RENO HILL 8400 16.8 11.8 142 24.0 21.7 111 ROACH 9700 20.2 15.7 129 27.5 23.7 116 SAND LAKE 10050 34.4 36.6 94 36.4 31.0 117 SOUTH PASS 9040 13.5 15.7 86 20.7 23.9 87 WINDY PEAK 7900 4.3 2.7 159 13.5 14.6 92 ----- ----- Basin wide percent of average 103 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 1.7 2.0 85 20.1 19.4 104 DIVIDE PEAK 8880 20.9 15.5 135 28.0 25.3 111 OLD BATTLE 10000 39.0 36.8 106 46.6 41.4 113 SANDSTONE RS 8150 11.0 5.8 190 25.4 22.9 111 WHISKEY PARK 8950 35.7 28.6 125 42.5 35.3 120 ----- ----- Basin wide percent of average 122 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 10.9 98 15.7 16.8 93 BLIND BULL SUM 8650 27.7 26.2 106 20.5 26.1 79 EAST RIM DIVIDE 7930 6.0 10.9 55 12.8 14.5 88 ELKHART PARK G.S. 9400 10.2 10.9 94 13.7 16.9 81 GROS VENTRE SUMMIT 8750 12.6 11.3 112 16.6 16.0 104 GUNSIGHT PASS 9820 12.5 -M * 17.6 -M * KENDALL R.S. 7740 6.3 6.2 102 15.7 17.2 91 LOOMIS PARK 8240 10.7 11.5 93 20.2 20.7 98 NEW FORK LAKE 8340 5.2 5.6 93 11.0 14.1 78 SNIDER BASIN 8060 9.0 9.7 93 15.9 19.1 83 SPRING CREEK DIVIDE 9000 23.7 26.6 89 27.2 31.1 87 TRIPLE PEAK 8500 22.4 19.9 113 33.1 29.7 111 ----- ----- Basin wide percent of average 97 91 LOWER GREEN RIVER HAMS FORK 7840 5.5 2.9 190 12.5 15.5 81 HEWINTA 9519 8.4 6.2 135 19.8 18.6 106 HICKERSON PARK 9145 .6 3.3 18 11.1 11.0 101 HOLE-IN-ROCK 9150 .5 2.8 18 11.8 10.5 112 INDIAN CREEK 9425 -M 25.7 * -M 30.5 * KELLEY R.S. 8180 12.7 11.1 114 20.8 24.4 85 STEEL CREEK PARK 10200 19.6 18.8 104 22.0 21.2 104 ----- ----- Basin wide percent of average 105 97 UPPER BEAR RIVER BUG LAKE 7950 15.0 13.6 110 19.4 23.3 83 HAYDEN FORK 9212 11.0 9.5 116 26.8 26.2 102 KELLEY R.S. 8180 12.7 11.1 114 20.8 24.4 85 LILY LAKE 9156 10.9 8.1 135 20.8 22.1 94 MONTE CRISTO 8960 27.3 25.0 109 30.1 31.6 95 SALT RIVER SUMMIT 7760 10.5 7.1 148 18.6 22.4 83 TRIAL LAKE 9992 22.6 24.9 91 28.3 30.7 92 ----- ----- Basin wide percent of average 111 91 ----------------------------------------------------------------------------- -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.