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 15 , 2003 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 3.4 6.5 52 25.4 25.6 99 COTTONWOOD CREEK 7600 11.1 13.9 80 28.1 33.7 83 GRANITE CREEK 6770 .1 7.8 1 19.4 23.5 83 GRASSY LAKE 7265 26.5 26.5 100 39.3 42.8 92 GROS VENTRE SUMMIT 8775 8.1 9.9 82 14.2 16.4 87 LEWIS LAKE DIVIDE 7860 29.7 29.0 102 35.7 43.3 82 PHILLIPS BENCH 8200 -M 24.1 * -M 34.7 * SALT RIVER SUMMIT 7600 .0 4.9 0 16.0 22.7 70 SNAKE RIVER STATION 6920 .5 5.7 9 24.9 26.8 93 SPRING CREEK DIVIDE 9000 -M 24.7 * -M 31.5 * THUMB DIVIDE 7980 8.9 9.7 92 21.4 23.3 92 TOGWOTEE PASS 9580 26.3 27.4 96 28.4 30.7 93 TWO OCEAN PLATEAU 9360 38.2 30.7 124 31.5 34.0 93 WILLOW CREEK 8450 22.6 25.3 89 40.7 39.9 102 ----- ----- Basin wide percent of average 89 90 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 29.8 25.5 117 27.4 25.1 109 BLACK BEAR 8170 41.1 36.5 113 40.2 47.8 84 CANYON 8090 12.1 7.1 170 19.0 19.0 100 FISHER CREEK 9100 42.3 36.6 116 41.4 44.1 94 MADISON PLATEAU 7750 19.9 19.5 102 27.2 32.2 84 NORTHEAST ENTRANCE 7350 .2 3.3 6 16.9 16.1 105 PARKER PEAK 9400 29.8 24.0 124 25.3 21.2 119 SYLVAN LAKE 8420 23.2 20.3 114 29.8 26.6 112 THUMB DIVIDE 7980 8.9 9.7 92 21.4 23.3 92 TWO OCEAN PLATEAU 9360 38.2 30.7 124 31.5 34.0 93 WHISKEY CREEK 6800 8.5 9.8 87 21.3 25.6 83 WHITE MILL 8700 31.7 24.7 128 29.0 33.0 88 WOLVERINE 7650 .2 3.2 6 14.5 16.6 87 ----- ----- Basin wide percent of average 114 95 WIND RIVER BURROUGHS CREEK 8750 15.7 10.4 151 22.4 20.8 108 COLD SPRINGS 9630 .6 3.3 18 13.5 15.3 88 DEER PARK 9700 13.6 17.2 79 22.3 28.8 77 HOBBS PARK 10100 13.1 16.7 78 17.4 18.8 93 LITTLE WARM 9370 3.9 7.8 50 14.8 18.2 81 SOUTH PASS 9040 7.7 14.1 55 17.9 24.2 74 ST. LAWRENCE ALT 8620 .1 3.7 3 11.7 13.5 87 TOGWOTEE PASS 9580 26.3 27.4 96 28.4 30.7 93 TOWNSEND CREEK 8700 2.5 5.7 44 15.6 17.0 92 ----- ----- Basin wide percent of average 79 88 BIGHORN BASIN BALD MTN. 9380 21.3 23.0 93 21.5 23.1 93 BEAR TRAP MEADOW 8200 .1 .7 14 12.3 12.4 99 BLACKWATER 9780 31.0 28.8 108 27.7 26.6 104 BONE SPRINGS DIV 9350 18.8 16.2 116 21.5 20.1 107 EVENING STAR 9200 34.1 32.5 105 38.5 31.9 121 GRAVE SPRINGS 8550 5.4 7.9 68 12.5 14.5 86 KIRWIN 9550 14.4 11.0 131 17.1 15.7 109 MARQUETTE 8760 -M 8.9 * -M 15.6 * MIDDLE POWDER 7760 8.4 11.1 76 11.6 17.3 67 OWL CREEK 8975 .4 2.3 17 9.0 9.5 95 POWDER RIVER PASS 9480 9.3 8.1 115 16.8 17.5 96 SHELL CREEK 9580 17.7 16.3 109 17.6 18.5 95 SYLVAN LAKE 8420 23.2 20.3 114 29.8 26.6 112 SYLVAN ROAD 7120 5.1 2.7 189 21.5 21.8 99 TIMBER CREEK 7950 3.9 2.2 177 12.4 12.3 101 YOUNTS PEAK 8350 15.9 15.4 103 19.4 20.3 96 ----- ----- Basin wide percent of average 105 100 SHOSHONE RIVER BLACKWATER 9780 31.0 28.8 108 27.7 26.6 104 EVENING STAR 9200 34.1 32.5 105 38.5 31.9 121 KIRWIN 9550 14.4 11.0 131 17.1 15.7 109 MARQUETTE 8760 -M 8.9 * -M 15.6 * SYLVAN LAKE 8420 23.2 20.3 114 29.8 26.6 112 SYLVAN ROAD 7120 5.1 2.7 189 21.5 21.8 99 YOUNTS PEAK 8350 15.9 15.4 103 19.4 20.3 96 ----- ----- Basin wide percent of average 112 108 POWDER-TONGUE BEAR TRAP MEADOW 8200 .1 .7 14 12.3 12.4 99 BIG GOOSE 7990 11.0 9.1 121 18.2 14.5 126 BONE SPRINGS DIV 9350 18.8 16.2 116 21.5 20.1 107 BURGESS JUNCTION 7880 13.5 10.2 132 18.6 16.8 111 CLOUD PEAK RESERVOIR 9860 17.7 14.8 120 19.4 19.2 101 DOME LAKE 8880 11.4 10.4 110 20.3 18.5 110 GRAVE SPRINGS 8550 5.4 7.9 68 12.5 14.5 86 HANSEN SAWMILL 8360 1.9 2.2 86 14.4 12.4 116 MIDDLE POWDER 7760 8.4 11.1 76 11.6 17.3 67 POWDER RIVER PASS 9480 9.3 8.1 115 16.8 17.5 96 SUCKER CREEK 8880 14.9 10.2 146 21.9 19.3 113 TIE CREEK 6870 2.6 1.3 200 19.3 15.2 127 ----- ----- Basin wide percent of average 113 105 BELLE FOURCHE BLIND PARK 6890 .2 .1 200* 14.4 15.9 91 COLE CANYON 5910 .1 -M * 12.4 -M * NORTH RAPID CREEK 6130 .0 .6 0* 12.9 12.6 102 ----- ----- Basin wide percent of average 29* 96 UPPER N. PLATTE RIVER COLUMBINE 9400 14.3 13.1 109 31.3 30.6 102 DIVIDE PEAK 8800 16.9 12.8 132 27.3 25.7 106 ELK RIVER 8700 8.6 7.6 113 25.4 24.4 104 JOE WRIGHT 10120 33.0 23.8 139 38.8 32.2 120 NORTH FRENCH CREEK 10100 37.9 33.2 114 37.9 31.8 119 OLD BATTLE 10000 -M 35.5 * -M 41.8 * SAGE CREEK BASIN 7850 .0 7.4 0 16.1 14.9 108 SOUTH BRUSH CREEK 8400 8.2 6.5 126 23.9 21.7 110 TOWER 10500 53.3 51.5 103 54.8 47.3 116 WEBBER SPRINGS 9200 14.2 18.1 78 31.2 32.7 95 WILLOW CREEK PASS 9540 21.4 11.2 191 21.5 17.1 126 ----- ----- Basin wide percent of average 112 111 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.0 23.1 82 27.4 28.9 95 CASPER MTN. 7900 9.3 11.7 79 16.7 21.5 78 DEADMAN HILL 10220 20.6 18.0 114 26.2 22.7 115 DEER PARK 9700 13.6 17.2 79 22.3 28.8 77 LAPRELE CREEK 8320 1.2 3.6 33 16.2 18.1 90 RENO HILL 8400 12.4 9.7 128 20.7 22.2 93 ROACH 9700 16.9 13.4 126 25.5 24.2 105 SAND LAKE 10080 34.1 35.5 96 30.6 31.6 97 SOUTH PASS 9040 7.7 14.1 55 17.9 24.2 74 WINDY PEAK 7840 2.8 1.7 165 16.2 15.1 107 ----- ----- Basin wide percent of average 93 93 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .2 .6 33* 20.7 19.6 106 DIVIDE PEAK 8800 16.9 12.8 132 27.3 25.7 106 OLD BATTLE 10000 -M 35.5 * -M 41.8 * SANDSTONE RS 8150 .3 3.8 8 24.0 23.2 103 WHISKEY PARK 8950 30.4 26.5 115 35.0 35.6 98 ----- ----- Basin wide percent of average 109 103 UPPER GREEN RIVER BIG SANDY OPENING 9100 7.4 9.0 82 14.6 17.1 85 BLIND BULL SUM 8650 23.3 24.9 94 20.3 26.5 77 EAST RIM DIVIDE 7930 4.9 9.2 53 12.1 14.9 81 ELKHART PARK G.S. 9400 -M 9.4 * -M 17.4 * GROS VENTRE SUMMIT 8775 8.1 9.9 82 14.2 16.4 87 KENDALL R.S. 7740 .0 3.7 0 15.3 17.5 87 LOOMIS PARK 8240 4.8 9.7 49 19.1 21.1 91 NEW FORK LAKE 8340 1.0 3.8 26 -M 14.5 * SNIDER BASIN 8250 1.2 7.7 16 15.1 19.4 78 SPRING CREEK DIVIDE 9000 -M 24.7 * -M 31.5 * TRIPLE PEAK 8500 13.9 17.1 81 30.7 30.1 102 ----- ----- Basin wide percent of average 68 87 LOWER GREEN RIVER HAMS FORK 7840 .2 1.1 18* 14.1 15.7 90 HEWINTA 9500 2.6 4.5 58 15.8 18.9 84 HICKERSON PARK 9150 .5 2.1 24 12.9 11.3 114 HOLE-IN-ROCK 9150 1.3 1.7 76 13.6 10.8 126 INDIAN CREEK 9425 22.2 23.7 94 23.6 30.9 76 KELLEY R.S. 8180 5.2 9.1 57 16.5 24.8 67 STEEL CREEK PARK 10100 18.3 18.1 101 18.6 21.6 86 ----- ----- Basin wide percent of average 83 86 UPPER BEAR RIVER BUG LAKE 7950 8.6 10.9 79 20.2 23.6 86 HAYDEN FORK 9400 1.7 7.3 23 22.1 26.6 83 KELLEY R.S. 8180 5.2 9.1 57 16.5 24.8 67 LILY LAKE 9050 1.5 6.3 24 19.2 22.5 85 MONTE CRISTO 8960 9.7 22.7 43 26.6 32.0 83 SALT RIVER SUMMIT 7600 .0 4.9 0 16.0 22.7 70 TRIAL LAKE 9960 13.6 23.2 59 22.2 31.2 71 ----- ----- Basin wide percent of average 48 78 ----------------------------------------------------------------------------- -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.