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 TUESDAY: MAY 13 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 13.7 7.4 185 31.2 25.4 123 COTTONWOOD CREEK 7670 22.1 14.9 148 30.1 33.6 90 GRAND TARGHEE 9260 58.5 -M * 41.6 -M * GRANITE CREEK 6770 13.1 8.6 152 25.5 23.4 109 GRASSY LAKE 7265 33.3 27.7 120 49.8 42.6 117 GROS VENTRE SUMMIT 8750 11.9 10.5 113 16.8 16.2 104 GUNSIGHT PASS 9820 13.6 -M * 17.9 -M * LEWIS LAKE DIVIDE 7850 39.1 30.0 130 -M 43.2 * PHILLIPS BENCH 8200 31.0 25.1 124 39.3 34.6 114 SALT RIVER SUMMIT 7760 9.9 5.8 171 18.8 22.6 83 SNAKE RIVER STATION 6920 13.5 6.7 201 31.7 26.7 119 SPRING CREEK DIVIDE 9000 23.0 25.5 90 27.4 31.4 87 THUMB DIVIDE 7980 14.7 10.5 140 24.1 23.2 104 TOGWOTEE PASS 9580 31.0 27.7 112 35.1 30.6 115 TWO OCEAN PLATEAU 9240 -M 31.0 * -M 33.8 * WILLOW CREEK 8380 30.6 26.3 116 46.3 39.8 116 ----- ----- Basin wide percent of average 127 107 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 29.6 25.7 115 28.9 25.0 116 BLACK BEAR 8170 48.5 37.2 130 49.4 47.7 104 CANYON 7870 16.2 7.7 210 24.4 18.8 130 FISHER CREEK 9100 47.4 37.2 127 45.0 43.8 103 MADISON PLATEAU 7750 31.1 20.5 152 37.7 31.9 118 NORTHEAST ENTRANCE 7350 5.3 4.1 129 16.4 15.8 104 PARKER PEAK 9400 33.2 24.2 137 -M 21.0 * SYLVAN LAKE 8420 21.9 21.1 104 32.0 26.3 122 THUMB DIVIDE 7980 14.7 10.5 140 24.1 23.2 104 TWO OCEAN PLATEAU 9240 -M 31.0 * -M 33.8 * WHISKEY CREEK 6800 19.1 10.8 177 29.1 25.4 115 WHITE MILL 8700 32.2 25.3 127 32.2 32.8 98 WOLVERINE 7650 6.0 3.9 154 17.2 16.5 104 ----- ----- Basin wide percent of average 134 110 WIND RIVER BURROUGHS CREEK 8750 15.5 10.9 142 21.3 20.6 103 COLD SPRINGS 9630 .9 3.7 24 13.3 15.3 87 DEER PARK 9700 16.1 17.2 94 24.5 28.5 86 HOBBS PARK 10100 17.1 17.1 100 19.9 18.7 106 LITTLE WARM 9370 8.7 8.3 105 17.6 18.2 97 SOUTH PASS 9040 13.6 14.7 93 21.5 24.3 88 ST. LAWRENCE ALT 8620 1.9 4.3 44 11.5 13.5 85 TOGWOTEE PASS 9580 31.0 27.7 112 35.1 30.6 115 TOWNSEND CREEK 8700 6.2 6.3 98 15.7 17.0 92 ----- ----- Basin wide percent of average 101 97 BIGHORN BASIN BALD MTN. 9380 20.6 23.4 88 20.0 23.1 87 BEAR TRAP MEADOW 8200 5.0 1.0 500 12.9 12.2 106 BLACKWATER 9780 31.2 28.9 108 29.5 26.4 112 BONE SPRINGS DIV 9350 21.4 16.7 128 22.9 20.0 114 EVENING STAR 9200 32.8 32.8 100 40.2 31.7 127 GRAVE SPRINGS 8550 11.8 8.8 134 14.4 14.5 99 KIRWIN 9550 12.8 11.6 110 17.5 15.6 112 MARQUETTE 8760 10.0 9.4 106 14.5 15.5 94 MIDDLE POWDER 7760 15.8 11.7 135 14.4 17.3 83 OWL CREEK 8975 .7 2.6 27 9.3 9.3 100 POWDER RIVER PASS 9480 12.8 8.6 149 19.0 17.4 109 SHELL CREEK 9580 19.6 16.7 117 20.5 18.4 111 SYLVAN LAKE 8420 21.9 21.1 104 32.0 26.3 122 SYLVAN ROAD 7120 4.7 3.3 142 24.5 21.7 113 TIMBER CREEK 7950 3.8 2.5 152 12.2 12.1 101 YOUNTS PEAK 8350 17.3 16.1 107 20.3 20.1 101 ----- ----- Basin wide percent of average 113 107 SHOSHONE RIVER BLACKWATER 9780 31.2 28.9 108 29.5 26.4 112 EVENING STAR 9200 32.8 32.8 100 40.2 31.7 127 KIRWIN 9550 12.8 11.6 110 17.5 15.6 112 MARQUETTE 8760 10.0 9.4 106 14.5 15.5 94 SYLVAN LAKE 8420 21.9 21.1 104 32.0 26.3 122 SYLVAN ROAD 7120 4.7 3.3 142 24.5 21.7 113 YOUNTS PEAK 8350 17.3 16.1 107 20.3 20.1 101 ----- ----- Basin wide percent of average 106 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 5.0 1.0 500 12.9 12.2 106 BIG GOOSE 7990 11.7 9.5 123 17.6 14.6 121 BONE SPRINGS DIV 9350 21.4 16.7 128 22.9 20.0 114 BURGESS JUNCTION 7880 17.1 10.8 158 20.0 16.8 119 CLOUD PEAK RESERVOIR 9860 19.8 15.1 131 21.6 19.1 113 DOME LAKE 8880 13.0 11.0 118 20.6 18.5 111 GRAVE SPRINGS 8550 11.8 8.8 134 14.4 14.5 99 HANSEN SAWMILL 8360 3.1 2.7 115 13.1 12.2 107 MIDDLE POWDER 7760 15.8 11.7 135 14.4 17.3 83 POWDER RIVER PASS 9480 12.8 8.6 149 19.0 17.4 109 SUCKER CREEK 8880 18.3 10.8 169 23.4 19.2 122 TIE CREEK 6870 5.8 1.7 341 17.1 15.1 113 ----- ----- Basin wide percent of average 144 110 BELLE FOURCHE BLIND PARK 6890 1.2 .5 240 16.3 15.7 104 COLE CANYON 5910 3.9 1.0 390 14.2 11.0 129 NORTH RAPID CREEK 6130 6.2 .8 775 16.2 12.5 130 ----- ----- Basin wide percent of average 491 119 UPPER N. PLATTE RIVER COLUMBINE 9160 21.6 14.5 149 34.5 30.5 113 DIVIDE PEAK 8880 20.7 13.9 149 28.6 25.7 111 ELK RIVER 8700 17.5 8.7 201 28.4 24.3 117 JOE WRIGHT 10120 29.1 24.2 120 36.1 32.1 112 NORTH FRENCH CREEK 10130 34.5 33.6 103 37.0 31.7 117 OLD BATTLE 10000 39.6 36.1 110 47.3 41.9 113 SAGE CREEK BASIN 7850 8.1 8.1 100 20.3 14.9 136 SOUTH BRUSH CREEK 8440 6.2 7.2 86 21.2 21.7 98 TOWER 10500 50.9 51.9 98 -M 47.4 * WEBBER SPRINGS 9250 24.7 19.4 127 37.3 32.7 114 WILLOW CREEK PASS 9540 21.5 11.9 181 21.0 16.9 124 ----- ----- Basin wide percent of average 120 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 20.5 24.2 85 27.8 28.9 96 CASPER MTN. 7900 16.6 12.7 131 21.0 21.5 98 DEADMAN HILL 10220 21.3 18.5 115 25.1 22.6 111 DEER PARK 9700 16.1 17.2 94 24.5 28.5 86 LAPRELE CREEK 8375 4.3 4.1 105 16.1 18.0 89 RENO HILL 8400 17.8 10.5 170 25.4 22.2 114 ROACH 9700 19.9 14.4 138 27.9 24.1 116 SAND LAKE 10050 34.9 36.0 97 37.1 31.5 118 SOUTH PASS 9040 13.6 14.7 93 21.5 24.3 88 WINDY PEAK 7900 3.5 2.1 167 14.1 15.0 94 ----- ----- Basin wide percent of average 109 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .6 1.2 50 20.7 19.6 106 DIVIDE PEAK 8880 20.7 13.9 149 28.6 25.7 111 OLD BATTLE 10000 39.6 36.1 110 47.3 41.9 113 SANDSTONE RS 8150 10.5 4.5 233 26.0 23.2 112 WHISKEY PARK 8950 36.6 27.5 133 -M 35.8 * ----- ----- Basin wide percent of average 130 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 10.0 9.8 102 15.8 17.0 93 BLIND BULL SUM 8650 27.9 25.5 109 20.6 26.4 78 EAST RIM DIVIDE 7930 5.0 9.9 51 12.8 14.7 87 ELKHART PARK G.S. 9400 10.0 10.0 100 13.9 17.2 81 GROS VENTRE SUMMIT 8750 11.9 10.5 113 16.8 16.2 104 GUNSIGHT PASS 9820 13.6 -M * 17.9 -M * KENDALL R.S. 7740 4.6 4.7 98 15.6 17.4 90 LOOMIS PARK 8240 9.9 10.4 95 20.4 21.0 97 NEW FORK LAKE 8340 4.3 4.6 93 11.2 14.4 78 SNIDER BASIN 8060 7.7 8.5 91 16.0 19.3 83 SPRING CREEK DIVIDE 9000 23.0 25.5 90 27.4 31.4 87 TRIPLE PEAK 8500 22.0 18.3 120 33.5 30.1 111 ----- ----- Basin wide percent of average 99 91 LOWER GREEN RIVER HAMS FORK 7840 4.2 1.8 233 12.7 15.7 81 HEWINTA 9519 6.9 5.2 133 20.1 18.9 106 HICKERSON PARK 9145 -M 2.6 * 11.1 11.2 99 HOLE-IN-ROCK 9150 .0 2.1 0 11.9 10.8 110 INDIAN CREEK 9425 -M 24.6 * -M 30.8 * KELLEY R.S. 8180 12.2 9.9 123 21.1 24.7 85 STEEL CREEK PARK 10200 19.9 18.5 108 22.4 21.5 104 ----- ----- Basin wide percent of average 115 97 UPPER BEAR RIVER BUG LAKE 7950 14.9 12.0 124 19.8 23.6 84 HAYDEN FORK 9212 8.9 8.2 109 27.4 26.6 103 KELLEY R.S. 8180 12.2 9.9 123 21.1 24.7 85 LILY LAKE 9156 9.5 7.0 136 21.4 22.4 96 MONTE CRISTO 8960 27.2 23.6 115 30.4 32.0 95 SALT RIVER SUMMIT 7760 9.9 5.8 171 18.8 22.6 83 TRIAL LAKE 9992 21.3 23.9 89 28.6 31.1 92 ----- ----- Basin wide percent of average 115 92 ----------------------------------------------------------------------------- -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.