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 19 , 2005 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 .2 5.0 4 18.5 26.0 71 COTTONWOOD CREEK 7600 8.4 11.8 71 29.7 34.2 87 GRANITE CREEK 6770 .2 6.2 3 20.1 23.9 84 GRASSY LAKE 7265 10.0 23.6 42 30.8 43.3 71 GROS VENTRE SUMMIT 8750 6.7 8.4 80 14.4 16.7 86 LEWIS LAKE DIVIDE 7850 11.5 26.4 44 28.0 43.8 64 PHILLIPS BENCH 8200 20.2 21.7 93 29.8 35.1 85 SALT RIVER SUMMIT 7600 2.2 3.7 59 21.7 23.1 94 SNAKE RIVER STATION 6920 .3 4.4 7 17.0 27.2 62 SPRING CREEK DIVIDE 9000 23.6 22.4 105 27.9 31.9 87 THUMB DIVIDE 7980 .3 7.9 4 16.5 23.6 70 TOGWOTEE PASS 9580 19.3 26.1 74 22.7 31.1 73 TWO OCEAN PLATEAU 9240 25.6 29.4 87 23.4 34.5 68 WILLOW CREEK 8450 18.7 22.7 82 39.7 40.5 98 ----- ----- Basin wide percent of average 67 78 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 17.9 24.2 74 18.6 25.5 73 BLACK BEAR 8170 30.2 34.1 89 38.6 48.4 80 CANYON 8090 .0 5.7 0 13.6 19.3 70 FISHER CREEK 9100 25.9 35.1 74 31.2 44.7 70 MADISON PLATEAU 7750 14.2 17.0 84 26.3 32.7 80 NORTHEAST ENTRANCE 7350 .0 2.6 0 11.0 16.4 67 PARKER PEAK 9400 17.8 22.7 78 17.9 21.6 83 SYLVAN LAKE 8420 8.0 18.2 44 21.8 27.2 80 THUMB DIVIDE 7980 .3 7.9 4 16.5 23.6 70 TWO OCEAN PLATEAU 9240 25.6 29.4 87 23.4 34.5 68 WHISKEY CREEK 6800 4.5 7.8 58 20.3 26.0 78 WHITE MILL 8700 17.6 23.1 76 20.9 33.5 62 WOLVERINE 7650 .0 2.4 0 11.0 17.0 65 ----- ----- Basin wide percent of average 70 73 WIND RIVER BURROUGHS CREEK 8750 10.1 8.8 115 15.5 21.2 73 COLD SPRINGS 9630 2.4 2.8 86 14.7 15.8 93 DEER PARK 9700 25.8 15.0 172 32.1 29.3 110 HOBBS PARK 10100 18.7 15.1 124 21.1 19.3 109 LITTLE WARM 9370 7.0 6.4 109 15.8 18.7 84 SOUTH PASS 9040 17.1 12.3 139 26.9 24.6 109 ST. LAWRENCE ALT 8620 2.1 3.0 70 14.8 13.9 106 TOGWOTEE PASS 9580 19.3 26.1 74 22.7 31.1 73 TOWNSEND CREEK 8700 4.8 4.8 100 19.7 17.4 113 ----- ----- Basin wide percent of average 114 96 BIGHORN BASIN BALD MTN. 9380 20.7 21.5 96 23.3 23.6 99 BEAR TRAP MEADOW 8200 .0 .5 0 13.2 12.8 103 BLACKWATER 9780 18.5 27.8 67 20.2 27.1 75 BONE SPRINGS DIV 9350 17.8 14.3 124 23.3 20.6 113 EVENING STAR 9200 17.9 31.1 58 26.4 32.5 81 GRAVE SPRINGS 8550 3.9 6.5 60 13.2 14.8 89 KIRWIN 9550 10.4 9.7 107 15.6 16.1 97 MARQUETTE 8760 7.8 7.8 100 15.6 16.2 96 MIDDLE POWDER 7760 6.1 9.1 67 11.8 17.7 67 OWL CREEK 8975 2.7 1.9 142 12.8 9.9 129 POWDER RIVER PASS 9480 6.8 6.7 101 18.3 18.0 102 SHELL CREEK 9580 18.7 14.9 126 20.5 18.9 108 SYLVAN LAKE 8420 8.0 18.2 44 21.8 27.2 80 SYLVAN ROAD 7120 .0 2.1 0 13.7 22.1 62 TIMBER CREEK 7950 1.9 1.8 106 12.4 12.8 97 YOUNTS PEAK 8350 8.9 13.4 66 15.7 20.7 76 ----- ----- Basin wide percent of average 80 89 SHOSHONE RIVER BLACKWATER 9780 18.5 27.8 67 20.2 27.1 75 EVENING STAR 9200 17.9 31.1 58 26.4 32.5 81 KIRWIN 9550 10.4 9.7 107 15.6 16.1 97 MARQUETTE 8760 7.8 7.8 100 15.6 16.2 96 SYLVAN LAKE 8420 8.0 18.2 44 21.8 27.2 80 SYLVAN ROAD 7120 .0 2.1 0 13.7 22.1 62 YOUNTS PEAK 8350 8.9 13.4 66 15.7 20.7 76 ----- ----- Basin wide percent of average 65 80 POWDER-TONGUE BEAR TRAP MEADOW 8200 .0 .5 0 13.2 12.8 103 BIG GOOSE 7990 8.0 7.6 105 18.9 14.9 127 BONE SPRINGS DIV 9350 17.8 14.3 124 23.3 20.6 113 BURGESS JUNCTION 7880 8.4 8.4 100 18.1 17.2 105 CLOUD PEAK RESERVOIR 9860 19.2 13.1 147 22.4 19.8 113 DOME LAKE 8880 9.1 8.7 105 21.2 19.0 112 GRAVE SPRINGS 8550 3.9 6.5 60 13.2 14.8 89 HANSEN SAWMILL 8360 .0 1.7 0 15.5 12.8 121 MIDDLE POWDER 7760 6.1 9.1 67 11.8 17.7 67 POWDER RIVER PASS 9480 6.8 6.7 101 18.3 18.0 102 SUCKER CREEK 8880 13.6 8.6 158 23.3 19.8 118 TIE CREEK 6870 .0 1.0 0 19.2 15.6 123 ----- ----- Basin wide percent of average 108 108 BELLE FOURCHE BLIND PARK 6890 .0 .1 0* 14.2 16.3 87 COLE CANYON 5910 .0 2.4 0 13.8 -M * NORTH RAPID CREEK 6130 .0 .5 0* 11.6 12.9 90 ----- ----- Basin wide percent of average 0* 88 UPPER N. PLATTE RIVER COLUMBINE 9160 2.7 10.5 26 -M 30.9 * DIVIDE PEAK 8860 12.3 10.7 115 28.9 26.2 110 ELK RIVER 8700 5.1 6.1 84 26.2 24.7 106 JOE WRIGHT 10120 22.8 22.2 103 27.8 32.8 85 NORTH FRENCH CREEK 10130 29.8 31.0 96 32.3 32.4 100 OLD BATTLE 9920 40.4 33.2 122 37.6 42.4 89 SAGE CREEK BASIN 7850 .2 6.2 3 19.5 15.1 129 SOUTH BRUSH CREEK 8440 1.6 5.4 30 19.6 22.1 89 TOWER 10500 40.6 49.4 82 47.0 47.9 98 WEBBER SPRINGS 9250 16.6 15.4 108 33.0 33.2 99 WILLOW CREEK PASS 9540 14.4 9.3 155 16.5 17.5 94 ----- ----- Basin wide percent of average 94 98 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 17.7 20.4 87 24.6 29.4 84 CASPER MTN. 7850 .8 9.9 8 17.2 22.1 78 DEADMAN HILL 10220 16.8 16.4 102 19.5 23.1 84 DEER PARK 9700 25.8 15.0 172 32.1 29.3 110 LAPRELE CREEK 8375 .0 2.9 0 14.8 18.6 80 RENO HILL 8500 3.8 8.2 46 17.4 22.8 76 ROACH 9700 12.5 11.6 108 23.0 24.7 93 SAND LAKE 10050 26.5 33.2 80 30.0 32.2 93 SOUTH PASS 9040 17.1 12.3 139 26.9 24.6 109 WINDY PEAK 7900 .7 1.3 54 12.4 15.6 79 ----- ----- Basin wide percent of average 93 90 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .0 .5 0* 20.0 19.9 101 DIVIDE PEAK 8860 12.3 10.7 115 28.9 26.2 110 OLD BATTLE 9920 40.4 33.2 122 37.6 42.4 89 SANDSTONE RS 8150 .2 2.9 7 24.5 23.6 104 WHISKEY PARK 8950 23.2 23.5 99 31.9 36.1 88 ----- ----- Basin wide percent of average 107 96 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.2 7.2 169 19.8 17.5 113 BLIND BULL SUM 8900 18.3 23.2 79 21.0 26.9 78 EAST RIM DIVIDE 7930 .1 7.4 1 14.1 15.2 93 ELKHART PARK G.S. 9400 12.2 8.0 152 20.0 17.7 113 GROS VENTRE SUMMIT 8750 6.7 8.4 80 14.4 16.7 86 KENDALL R.S. 7740 .2 2.8 7 16.2 17.8 91 LOOMIS PARK 8240 5.5 8.0 69 20.6 21.4 96 NEW FORK LAKE 8340 3.7 2.9 128 15.6 14.9 105 SNIDER BASIN 8060 2.8 5.9 47 16.9 19.6 86 SPRING CREEK DIVIDE 9000 23.6 22.4 105 27.9 31.9 87 TRIPLE PEAK 8500 9.2 14.2 65 26.2 30.5 86 ----- ----- Basin wide percent of average 86 92 LOWER GREEN RIVER HAMS FORK 7840 .2 .8 25* 18.5 16.0 116 HEWINTA 9500 .0 3.6 0 16.5 19.3 85 HICKERSON PARK 9100 .0 1.6 0 14.1 11.6 122 HOLE-IN-ROCK 9150 .1 1.3 8 13.6 11.2 121 INDIAN CREEK 9425 31.2 21.6 144 31.2 31.2 100 KELLEY R.S. 8180 10.1 7.3 138 24.9 25.1 99 STEEL CREEK PARK 10100 18.8 16.6 113 21.0 21.9 96 ----- ----- Basin wide percent of average 114 103 UPPER BEAR RIVER BUG LAKE 7950 14.4 8.9 162 29.0 24.0 121 HAYDEN FORK 9100 4.1 5.9 69 30.9 27.1 114 KELLEY R.S. 8180 10.1 7.3 138 24.9 25.1 99 LILY LAKE 9050 4.4 5.1 86 23.2 22.8 102 MONTE CRISTO 8960 28.6 20.3 141 37.9 32.4 117 SALT RIVER SUMMIT 7600 2.2 3.7 59 21.7 23.1 94 TRIAL LAKE 9960 33.2 21.2 157 37.7 31.7 119 ----- ----- Basin wide percent of average 134 110 ----------------------------------------------------------------------------- -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 1971-2000. 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.