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: JUNE 18 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .0 .0 100 28.6 28.3 101 COTTONWOOD CREEK 7670 .0 .0 100 44.6 37.1 120 GRAND TARGHEE 9260 32.1 -M * 48.5 -M * GRANITE CREEK 6770 .2 .0 29.7 26.1 114 GRASSY LAKE 7265 .0 .0 100 47.0 46.9 100 GROS VENTRE SUMMIT 8750 .2 .0 23.1 18.9 122 GUNSIGHT PASS 9820 2.4 -M * 25.8 -M * LEWIS LAKE DIVIDE 7850 .4 4.5 9 45.8 47.0 97 PHILLIPS BENCH 8200 .0 3.4 0 40.8 38.1 107 SALT RIVER SUMMIT 7760 .0 .0 100 26.0 25.0 104 SNAKE RIVER STATION 6920 .0 .0 100 32.3 29.7 109 SPRING CREEK DIVIDE 9000 1.7 3.1 55 37.9 34.1 111 THUMB DIVIDE 7980 .1 .0 30.9 26.0 119 TOGWOTEE PASS 9580 16.8 12.8 131 42.3 34.1 124 TWO OCEAN PLATEAU 9240 26.1 16.0 163 42.7 38.0 112 WILLOW CREEK 8380 .0 1.6 0 55.8 44.2 126 ----- ----- Basin wide percent of average 109 111 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 14.1 10.2 138 31.0 28.6 108 BLACK BEAR 8170 10.3 12.2 84 49.3 52.2 94 CANYON 7870 .0 .1 0 24.2 21.8 111 FISHER CREEK 9100 18.0 19.2 94 48.8 48.9 100 MADISON PLATEAU 7750 .0 .6 0 35.0 35.8 98 NORTHEAST ENTRANCE 7350 .0 .0 100 21.1 19.0 111 PARKER PEAK 9400 2.8 9.3 30 28.2 24.9 113 SYLVAN LAKE 8420 .0 3.6 0 34.4 31.0 111 THUMB DIVIDE 7980 .1 .0 30.9 26.0 119 TWO OCEAN PLATEAU 9240 26.1 16.0 163 42.7 38.0 112 WHISKEY CREEK 6800 .0 .0 100 29.1 28.9 101 WHITE MILL 8700 6.7 8.9 75 35.0 37.1 94 WOLVERINE 7650 .0 .0 100 20.4 19.6 104 ----- ----- Basin wide percent of average 97 104 WIND RIVER BURROUGHS CREEK 8750 .0 .3 0 28.5 23.9 119 COLD SPRINGS 9630 .0 .1 0 19.4 18.6 104 DEER PARK 9700 .0 3.8 0 30.4 32.6 93 HOBBS PARK 10100 .0 4.0 0 25.6 22.5 114 LITTLE WARM 9370 .0 .0 100 24.8 21.3 116 SOUTH PASS 9040 .0 2.0 0 26.0 27.3 95 ST. LAWRENCE ALT 8620 .0 .1 0 18.2 16.7 109 TOGWOTEE PASS 9580 16.8 12.8 131 42.3 34.1 124 TOWNSEND CREEK 8700 .0 .2 0 22.3 20.2 110 ----- ----- Basin wide percent of average 72 109 BIGHORN BASIN BALD MTN. 9380 4.4 6.9 64 24.8 27.1 92 BEAR TRAP MEADOW 8200 .0 .0 100 16.0 15.9 101 BLACKWATER 9780 18.6 15.9 117 35.6 31.0 115 BONE SPRINGS DIV 9350 .0 2.2 0 23.1 24.3 95 EVENING STAR 9200 11.1 15.4 72 43.9 36.5 120 GRAVE SPRINGS 8550 .0 .0 100 14.6 17.6 83 KIRWIN 9550 .0 1.0 0 24.7 19.3 128 MARQUETTE 8760 .0 .9 0 16.5 20.0 82 MIDDLE POWDER 7760 .0 .0 100 16.3 20.7 79 OWL CREEK 8975 .0 .0 100 15.4 12.6 122 POWDER RIVER PASS 9480 .0 .1 0 24.1 21.4 113 SHELL CREEK 9580 2.3 2.9 79 24.9 22.5 111 SYLVAN LAKE 8420 .0 3.6 0 34.4 31.0 111 SYLVAN ROAD 7120 .0 .0 100 29.0 24.7 117 TIMBER CREEK 7950 .0 .0 100 16.5 15.9 104 YOUNTS PEAK 8350 .0 .5 0 25.0 23.6 106 ----- ----- Basin wide percent of average 74 106 SHOSHONE RIVER BLACKWATER 9780 18.6 15.9 117 35.6 31.0 115 EVENING STAR 9200 11.1 15.4 72 43.9 36.5 120 KIRWIN 9550 .0 1.0 0 24.7 19.3 128 MARQUETTE 8760 .0 .9 0 16.5 20.0 82 SYLVAN LAKE 8420 .0 3.6 0 34.4 31.0 111 SYLVAN ROAD 7120 .0 .0 100 29.0 24.7 117 YOUNTS PEAK 8350 .0 .5 0 25.0 23.6 106 ----- ----- Basin wide percent of average 80 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .0 100 16.0 15.9 101 BIG GOOSE 7990 .0 .0 100 19.3 17.5 110 BONE SPRINGS DIV 9350 .0 2.2 0 23.1 24.3 95 BURGESS JUNCTION 7880 .0 .0 100 19.7 20.1 98 CLOUD PEAK RESERVOIR 9860 .0 2.0 0 26.1 23.7 110 DOME LAKE 8880 .0 .4 0 23.7 22.2 107 GRAVE SPRINGS 8550 .0 .0 100 14.6 17.6 83 HANSEN SAWMILL 8360 .0 .0 100 16.6 16.0 104 MIDDLE POWDER 7760 .0 .0 100 16.3 20.7 79 POWDER RIVER PASS 9480 .0 .1 0 24.1 21.4 113 SUCKER CREEK 8880 .0 .3 0 26.0 23.4 111 TIE CREEK 6870 .0 .0 100 22.8 19.0 120 ----- ----- Basin wide percent of average 0 103 BELLE FOURCHE BLIND PARK 6890 .0 .0 100 22.1 19.8 112 COLE CANYON 5910 .0 .0 100 19.5 15.0 130 NORTH RAPID CREEK 6130 .0 .0 100 18.4 16.3 113 ----- ----- Basin wide percent of average * 117 UPPER N. PLATTE RIVER COLUMBINE 9160 .1 .0 -M 33.1 * DIVIDE PEAK 8880 .0 .0 100 37.6 28.5 132 ELK RIVER 8700 .2 .0 30.6 27.0 113 JOE WRIGHT 10120 -M 6.2 * -M 36.4 * NORTH FRENCH CREEK 10130 -M 11.1 * -M 35.8 * OLD BATTLE 10000 15.6 11.6 134 52.3 45.5 115 SAGE CREEK BASIN 7850 .0 .0 100 22.6 16.5 137 SOUTH BRUSH CREEK 8440 .0 .0 100 25.6 24.8 103 TOWER 10500 15.3 24.2 63 55.3 51.5 107 WEBBER SPRINGS 9250 .0 .9 0 39.9 35.8 111 WILLOW CREEK PASS 9540 .0 .2 0 20.6 20.2 102 ----- ----- Basin wide percent of average 84 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 .1 3.2 3 32.0 32.4 99 CASPER MTN. 7900 .0 .9 0 23.6 25.5 93 DEADMAN HILL 10220 -M 3.1 * 25.7 25.8 100 DEER PARK 9700 .0 3.8 0 30.4 32.6 93 LAPRELE CREEK 8375 .0 .0 100 20.6 21.4 96 RENO HILL 8400 .0 .6 0 25.9 26.0 100 ROACH 9700 .1 1.2 8 28.5 27.7 103 SAND LAKE 10050 13.0 11.5 113 42.5 35.8 119 SOUTH PASS 9040 .0 2.0 0 26.0 27.3 95 WINDY PEAK 7900 -M .0 * 18.7 18.4 102 ----- ----- Basin wide percent of average 57 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .0 100 26.7 21.8 122 DIVIDE PEAK 8880 .0 .0 100 37.6 28.5 132 OLD BATTLE 10000 15.6 11.6 134 52.3 45.5 115 SANDSTONE RS 8150 -M .0 * 29.3 25.8 114 WHISKEY PARK 8950 -M 2.6 * 45.6 39.1 117 ----- ----- Basin wide percent of average 134 119 UPPER GREEN RIVER BIG SANDY OPENING 9080 .0 .0 100 23.9 19.7 121 BLIND BULL SUM 8650 4.8 7.8 62 30.1 29.2 103 EAST RIM DIVIDE 7930 .0 .0 100 19.7 17.0 116 ELKHART PARK G.S. 9400 -M .0 * 24.8 20.3 122 GROS VENTRE SUMMIT 8750 .2 .0 23.1 18.9 122 GUNSIGHT PASS 9820 2.4 -M * 25.8 -M * KENDALL R.S. 7740 .1 .0 21.4 19.6 109 LOOMIS PARK 8240 .1 .0 28.4 23.4 121 NEW FORK LAKE 8340 1.8 .0 18.9 17.0 111 SNIDER BASIN 8060 .0 .0 100 21.6 21.2 102 SPRING CREEK DIVIDE 9000 1.7 3.1 55 37.9 34.1 111 TRIPLE PEAK 8500 .2 .0 38.3 33.1 116 ----- ----- Basin wide percent of average 60* 114 LOWER GREEN RIVER HAMS FORK 7840 .2 .0 20.8 17.9 116 HEWINTA 9519 .0 .0 100 19.5 21.3 92 HICKERSON PARK 9145 .0 .0 100 16.9 13.5 125 HOLE-IN-ROCK 9150 .0 .0 100 15.0 13.2 114 INDIAN CREEK 9425 .0 4.2 0 31.8 33.6 95 KELLEY R.S. 8180 .0 .0 100 27.8 27.2 102 STEEL CREEK PARK 10200 .0 4.0 0 23.9 24.3 98 ----- ----- Basin wide percent of average 0 103 UPPER BEAR RIVER BUG LAKE 7950 .2 .0 25.5 26.1 98 HAYDEN FORK 9212 .1 .0 30.7 29.6 104 KELLEY R.S. 8180 .0 .0 100 27.8 27.2 102 LILY LAKE 9156 .1 .0 25.0 25.2 99 MONTE CRISTO 8960 .0 2.9 0 -M 35.2 * SALT RIVER SUMMIT 7760 .0 .0 100 26.0 25.0 104 TRIAL LAKE 9992 .2 5.4 4 34.6 34.7 100 ----- ----- Basin wide percent of average 2 101 ----------------------------------------------------------------------------- -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.