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 THURSDAY: MAY 8 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 15.4 9.6 160 30.5 25.0 122 COTTONWOOD CREEK 7670 21.5 17.1 126 28.9 32.9 88 GRAND TARGHEE 9260 56.7 -M * 39.3 -M * GRANITE CREEK 6770 14.2 10.5 135 24.9 23.0 108 GRASSY LAKE 7265 32.7 30.3 108 48.4 41.9 116 GROS VENTRE SUMMIT 8750 12.5 11.8 106 16.1 15.8 102 GUNSIGHT PASS 9820 12.2 -M * 17.2 -M * LEWIS LAKE DIVIDE 7850 38.7 32.2 120 41.2 42.6 97 PHILLIPS BENCH 8200 32.5 27.2 119 38.6 34.0 114 SALT RIVER SUMMIT 7760 10.9 8.0 136 18.2 22.2 82 SNAKE RIVER STATION 6920 14.6 9.1 160 30.8 26.2 118 SPRING CREEK DIVIDE 9000 23.8 27.2 88 26.8 30.9 87 THUMB DIVIDE 7980 15.3 12.5 122 23.3 22.7 103 TOGWOTEE PASS 9580 30.3 28.1 108 34.3 29.9 115 TWO OCEAN PLATEAU 9240 -M 31.5 * -M 33.1 * WILLOW CREEK 8380 30.0 28.5 105 44.6 39.0 114 ----- ----- Basin wide percent of average 116 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.1 25.9 108 27.4 24.4 112 BLACK BEAR 8170 47.5 38.5 123 47.8 47.0 102 CANYON 7870 16.9 9.1 186 23.5 18.3 128 FISHER CREEK 9100 46.5 37.7 123 43.5 43.0 101 MADISON PLATEAU 7750 31.1 22.2 140 36.4 31.2 117 NORTHEAST ENTRANCE 7350 6.5 5.4 120 15.8 15.4 103 PARKER PEAK 9400 31.3 24.5 128 28.2 20.4 138 SYLVAN LAKE 8420 20.9 22.3 94 30.4 25.6 119 THUMB DIVIDE 7980 15.3 12.5 122 23.3 22.7 103 TWO OCEAN PLATEAU 9240 -M 31.5 * -M 33.1 * WHISKEY CREEK 6800 19.5 12.7 154 27.9 24.9 112 WHITE MILL 8700 31.4 25.9 121 31.3 32.2 97 WOLVERINE 7650 6.2 5.4 115 15.8 15.9 99 ----- ----- Basin wide percent of average 124 109 WIND RIVER BURROUGHS CREEK 8750 16.1 11.8 136 21.0 20.1 104 COLD SPRINGS 9630 2.3 4.4 52 12.2 14.8 82 DEER PARK 9700 15.2 16.5 92 23.3 27.8 84 HOBBS PARK 10100 15.9 17.4 91 18.6 18.0 103 LITTLE WARM 9370 8.4 9.3 90 16.5 17.7 93 SOUTH PASS 9040 13.4 16.3 82 20.3 23.7 86 ST. LAWRENCE ALT 8620 3.0 5.1 59 10.2 12.9 79 TOGWOTEE PASS 9580 30.3 28.1 108 34.3 29.9 115 TOWNSEND CREEK 8700 6.8 7.4 92 14.9 16.4 91 ----- ----- Basin wide percent of average 96 94 BIGHORN BASIN BALD MTN. 9380 19.8 23.5 84 19.1 22.4 85 BEAR TRAP MEADOW 8200 5.3 1.6 331 11.9 11.7 102 BLACKWATER 9780 29.4 28.7 102 27.7 25.7 108 BONE SPRINGS DIV 9350 20.9 17.4 120 22.0 19.3 114 EVENING STAR 9200 31.9 33.3 96 38.7 31.0 125 GRAVE SPRINGS 8550 11.3 9.6 118 13.4 14.0 96 KIRWIN 9550 12.9 12.4 104 16.9 15.0 113 MARQUETTE 8760 8.7 10.2 85 12.8 14.8 86 MIDDLE POWDER 7760 14.2 12.8 111 12.7 16.7 76 OWL CREEK 8975 .0 3.3 0 8.6 8.9 97 POWDER RIVER PASS 9480 12.0 9.4 128 17.7 16.7 106 SHELL CREEK 9580 18.0 16.9 107 19.2 17.8 108 SYLVAN LAKE 8420 20.9 22.3 94 30.4 25.6 119 SYLVAN ROAD 7120 7.1 5.6 127 23.6 21.2 111 TIMBER CREEK 7950 3.5 3.6 97 10.6 11.5 92 YOUNTS PEAK 8350 17.6 17.2 102 19.8 19.5 102 ----- ----- Basin wide percent of average 103 105 SHOSHONE RIVER BLACKWATER 9780 29.4 28.7 102 27.7 25.7 108 EVENING STAR 9200 31.9 33.3 96 38.7 31.0 125 KIRWIN 9550 12.9 12.4 104 16.9 15.0 113 MARQUETTE 8760 8.7 10.2 85 12.8 14.8 86 SYLVAN LAKE 8420 20.9 22.3 94 30.4 25.6 119 SYLVAN ROAD 7120 7.1 5.6 127 23.6 21.2 111 YOUNTS PEAK 8350 17.6 17.2 102 19.8 19.5 102 ----- ----- Basin wide percent of average 99 111 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.3 1.6 331 11.9 11.7 102 BIG GOOSE 7990 10.8 10.4 104 16.4 13.9 118 BONE SPRINGS DIV 9350 20.9 17.4 120 22.0 19.3 114 BURGESS JUNCTION 7880 16.5 12.0 138 18.5 16.2 114 CLOUD PEAK RESERVOIR 9860 19.2 15.6 123 20.1 18.3 110 DOME LAKE 8880 12.8 12.0 107 19.4 17.8 109 GRAVE SPRINGS 8550 11.3 9.6 118 13.4 14.0 96 HANSEN SAWMILL 8360 3.5 3.7 95 11.9 11.7 102 MIDDLE POWDER 7760 14.2 12.8 111 12.7 16.7 76 POWDER RIVER PASS 9480 12.0 9.4 128 17.7 16.7 106 SUCKER CREEK 8880 17.3 11.7 148 22.1 18.5 119 TIE CREEK 6870 6.5 2.6 250 15.9 14.4 110 ----- ----- Basin wide percent of average 127 107 BELLE FOURCHE BLIND PARK 6890 3.3 2.3 143 15.7 15.0 105 COLE CANYON 5910 5.9 2.2 268 13.2 10.4 127 NORTH RAPID CREEK 6130 8.5 1.7 500 15.6 12.1 129 ----- ----- Basin wide percent of average 285 119 UPPER N. PLATTE RIVER COLUMBINE 9160 22.9 17.5 131 33.4 30.0 111 DIVIDE PEAK 8880 21.5 16.5 130 27.8 25.1 111 ELK RIVER 8700 17.5 11.4 154 27.2 23.8 114 JOE WRIGHT 10120 28.0 24.9 112 34.4 31.3 110 NORTH FRENCH CREEK 10130 34.1 34.4 99 35.7 30.9 116 OLD BATTLE 10000 38.5 37.1 104 46.0 41.1 112 SAGE CREEK BASIN 7850 10.2 9.6 106 19.8 14.6 136 SOUTH BRUSH CREEK 8440 7.3 9.0 81 20.7 21.1 98 TOWER 10500 48.9 52.4 93 -M 46.6 * WEBBER SPRINGS 9250 25.2 22.3 113 36.5 32.1 114 WILLOW CREEK PASS 9540 20.8 13.3 156 19.7 16.4 120 ----- ----- Basin wide percent of average 111 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.9 26.5 79 26.9 28.1 96 CASPER MTN. 7900 15.4 15.0 103 19.2 20.7 93 DEADMAN HILL 10220 20.1 19.4 104 23.8 22.0 108 DEER PARK 9700 15.2 16.5 92 23.3 27.8 84 LAPRELE CREEK 8375 4.8 5.3 91 15.5 17.4 89 RENO HILL 8400 16.7 12.5 134 23.7 21.4 111 ROACH 9700 19.5 16.5 118 26.9 23.4 115 SAND LAKE 10050 33.8 36.8 92 35.8 30.6 117 SOUTH PASS 9040 13.4 16.3 82 20.3 23.7 86 WINDY PEAK 7900 5.2 3.2 162 13.4 14.4 93 ----- ----- Basin wide percent of average 98 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 3.4 2.6 131 19.9 19.2 104 DIVIDE PEAK 8880 21.5 16.5 130 27.8 25.1 111 OLD BATTLE 10000 38.5 37.1 104 46.0 41.1 112 SANDSTONE RS 8150 11.9 6.6 180 25.0 22.7 110 WHISKEY PARK 8950 35.8 29.2 123 -M 35.0 * ----- ----- Basin wide percent of average 121 110 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.7 11.5 93 15.3 16.6 92 BLIND BULL SUM 8650 26.9 26.7 101 20.1 25.9 78 EAST RIM DIVIDE 7930 6.4 11.5 56 12.6 14.4 88 ELKHART PARK G.S. 9400 9.9 11.4 87 13.3 16.7 80 GROS VENTRE SUMMIT 8750 12.5 11.8 106 16.1 15.8 102 GUNSIGHT PASS 9820 12.2 -M * 17.2 -M * KENDALL R.S. 7740 6.7 7.1 94 15.4 17.0 91 LOOMIS PARK 8240 11.1 12.2 91 20.0 20.5 98 NEW FORK LAKE 8340 5.4 6.3 86 10.9 14.0 78 SNIDER BASIN 8060 9.5 10.5 90 15.9 19.0 84 SPRING CREEK DIVIDE 9000 23.8 27.2 88 26.8 30.9 87 TRIPLE PEAK 8500 22.3 20.9 107 32.6 29.5 111 ----- ----- Basin wide percent of average 92 90 LOWER GREEN RIVER HAMS FORK 7840 5.7 3.6 158 12.1 15.4 79 HEWINTA 9519 8.3 6.9 120 19.6 18.5 106 HICKERSON PARK 9145 1.7 3.9 44 11.1 10.8 103 HOLE-IN-ROCK 9150 1.4 3.2 44 11.8 10.3 115 INDIAN CREEK 9425 23.9 26.4 91 -M 30.2 * KELLEY R.S. 8180 12.5 11.8 106 20.2 24.2 83 STEEL CREEK PARK 10200 19.0 18.9 101 21.7 21.0 103 ----- ----- Basin wide percent of average 97 96 UPPER BEAR RIVER BUG LAKE 7950 14.7 14.7 100 19.1 23.1 83 HAYDEN FORK 9212 10.5 10.3 102 26.5 26.0 102 KELLEY R.S. 8180 12.5 11.8 106 20.2 24.2 83 LILY LAKE 9156 11.0 8.8 125 20.6 21.9 94 MONTE CRISTO 8960 27.1 25.9 105 29.6 31.3 95 SALT RIVER SUMMIT 7760 10.9 8.0 136 18.2 22.2 82 TRIAL LAKE 9992 22.6 25.4 89 28.0 30.4 92 ----- ----- Basin wide percent of average 104 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.