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 MONDAY: MAY 5 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 17.1 10.8 158 30.4 24.7 123 COTTONWOOD CREEK 7670 23.4 18.3 128 28.2 32.5 87 GRAND TARGHEE 9260 55.1 -M * 38.4 -M * GRANITE CREEK 6770 15.1 11.5 131 24.9 22.7 110 GRASSY LAKE 7265 -M 31.7 * 47.9 41.5 115 GROS VENTRE SUMMIT 8750 13.4 12.5 107 16.0 15.6 103 GUNSIGHT PASS 9820 13.9 -M * 16.9 -M * LEWIS LAKE DIVIDE 7850 39.3 33.3 118 41.0 42.2 97 PHILLIPS BENCH 8200 34.7 28.3 123 38.5 33.6 115 SALT RIVER SUMMIT 7760 12.2 9.2 133 18.1 21.9 83 SNAKE RIVER STATION 6920 16.9 10.5 161 30.3 25.9 117 SPRING CREEK DIVIDE 9000 24.0 27.9 86 26.5 30.6 87 THUMB DIVIDE 7980 16.3 13.6 120 23.1 22.4 103 TOGWOTEE PASS 9580 30.5 28.1 109 33.7 29.5 114 TWO OCEAN PLATEAU 9240 -M 31.7 * -M 32.7 * WILLOW CREEK 8380 31.7 29.5 107 43.7 38.4 114 ----- ----- Basin wide percent of average 118 105 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.8 26.0 107 26.7 24.0 111 BLACK BEAR 8170 50.3 39.2 128 47.5 46.5 102 CANYON 7870 18.3 10.1 181 23.3 18.1 129 FISHER CREEK 9100 45.0 37.6 120 43.2 42.6 101 MADISON PLATEAU 7750 32.9 23.1 142 35.9 30.9 116 NORTHEAST ENTRANCE 7350 8.0 5.9 136 15.3 15.1 101 PARKER PEAK 9400 31.6 24.5 129 -M 20.0 * SYLVAN LAKE 8420 22.2 23.0 97 29.9 25.2 119 THUMB DIVIDE 7980 16.3 13.6 120 23.1 22.4 103 TWO OCEAN PLATEAU 9240 -M 31.7 * -M 32.7 * WHISKEY CREEK 6800 20.5 13.8 149 27.7 24.6 113 WHITE MILL 8700 31.2 26.2 119 30.8 31.8 97 WOLVERINE 7650 7.8 6.2 126 15.5 15.6 99 ----- ----- Basin wide percent of average 125 107 WIND RIVER BURROUGHS CREEK 8750 16.7 12.6 133 20.7 19.8 105 COLD SPRINGS 9630 3.8 4.6 83 12.1 14.4 84 DEER PARK 9700 16.3 17.2 95 23.2 27.5 84 HOBBS PARK 10100 16.1 17.7 91 18.4 17.5 105 LITTLE WARM 9370 9.7 10.0 97 16.1 17.3 93 SOUTH PASS 9040 14.7 17.2 85 20.2 23.3 87 ST. LAWRENCE ALT 8620 4.9 5.4 91 10.1 12.6 80 TOGWOTEE PASS 9580 30.5 28.1 109 33.7 29.5 114 TOWNSEND CREEK 8700 8.6 8.0 108 14.9 16.0 93 ----- ----- Basin wide percent of average 100 95 BIGHORN BASIN BALD MTN. 9380 20.1 23.5 86 18.6 21.9 85 BEAR TRAP MEADOW 8200 7.1 1.9 374 11.7 11.4 103 BLACKWATER 9780 29.7 28.7 103 27.3 25.3 108 BONE SPRINGS DIV 9350 21.7 17.8 122 21.3 18.9 113 EVENING STAR 9200 32.6 33.2 98 38.4 30.5 126 GRAVE SPRINGS 8550 12.0 10.4 115 13.1 13.6 96 KIRWIN 9550 13.6 12.7 107 16.7 14.7 114 MARQUETTE 8760 9.4 10.7 88 12.7 14.3 89 MIDDLE POWDER 7760 15.1 13.6 111 12.4 16.3 76 OWL CREEK 8975 .8 3.6 22 8.5 8.6 99 POWDER RIVER PASS 9480 13.1 9.8 134 17.4 16.3 107 SHELL CREEK 9580 18.8 16.6 113 18.9 17.4 109 SYLVAN LAKE 8420 22.2 23.0 97 29.9 25.2 119 SYLVAN ROAD 7120 9.3 7.0 133 23.3 20.9 111 TIMBER CREEK 7950 4.8 4.5 107 10.4 11.0 95 YOUNTS PEAK 8350 18.3 17.8 103 19.7 19.2 103 ----- ----- Basin wide percent of average 106 105 SHOSHONE RIVER BLACKWATER 9780 29.7 28.7 103 27.3 25.3 108 EVENING STAR 9200 32.6 33.2 98 38.4 30.5 126 KIRWIN 9550 13.6 12.7 107 16.7 14.7 114 MARQUETTE 8760 9.4 10.7 88 12.7 14.3 89 SYLVAN LAKE 8420 22.2 23.0 97 29.9 25.2 119 SYLVAN ROAD 7120 9.3 7.0 133 23.3 20.9 111 YOUNTS PEAK 8350 18.3 17.8 103 19.7 19.2 103 ----- ----- Basin wide percent of average 102 112 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.1 1.9 374 11.7 11.4 103 BIG GOOSE 7990 11.0 11.0 100 16.2 13.5 120 BONE SPRINGS DIV 9350 21.7 17.8 122 21.3 18.9 113 BURGESS JUNCTION 7880 16.8 12.6 133 18.3 15.9 115 CLOUD PEAK RESERVOIR 9860 19.2 16.0 120 19.8 17.8 111 DOME LAKE 8880 13.3 12.6 106 19.4 17.4 111 GRAVE SPRINGS 8550 12.0 10.4 115 13.1 13.6 96 HANSEN SAWMILL 8360 5.0 4.2 119 11.7 11.4 103 MIDDLE POWDER 7760 15.1 13.6 111 12.4 16.3 76 POWDER RIVER PASS 9480 13.1 9.8 134 17.4 16.3 107 SUCKER CREEK 8880 17.7 12.2 145 21.8 18.0 121 TIE CREEK 6870 7.6 3.4 224 15.6 14.0 111 ----- ----- Basin wide percent of average 127 108 BELLE FOURCHE BLIND PARK 6890 5.3 3.4 156 15.0 14.7 102 COLE CANYON 5910 6.9 3.2 216 12.1 10.1 120 NORTH RAPID CREEK 6130 9.4 2.4 392 14.1 11.8 119 ----- ----- Basin wide percent of average 240 113 UPPER N. PLATTE RIVER COLUMBINE 9160 26.1 19.1 137 33.2 29.6 112 DIVIDE PEAK 8880 23.7 17.9 132 27.6 24.8 111 ELK RIVER 8700 21.0 13.0 162 27.0 23.5 115 JOE WRIGHT 10120 28.4 25.1 113 34.1 30.8 111 NORTH FRENCH CREEK 10130 34.3 34.5 99 35.3 30.4 116 OLD BATTLE 10000 38.6 37.3 103 45.8 40.6 113 SAGE CREEK BASIN 7850 14.1 10.4 136 19.8 14.4 138 SOUTH BRUSH CREEK 8440 10.5 9.9 106 20.5 20.7 99 TOWER 10500 49.6 52.4 95 48.0 46.0 104 WEBBER SPRINGS 9250 28.1 23.7 119 36.3 31.7 115 WILLOW CREEK PASS 9540 21.3 13.8 154 19.8 16.1 123 ----- ----- Basin wide percent of average 115 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.6 27.5 82 26.8 27.7 97 CASPER MTN. 7900 16.7 16.1 104 19.2 20.3 95 DEADMAN HILL 10220 21.4 19.6 109 23.8 21.5 111 DEER PARK 9700 16.3 17.2 95 23.2 27.5 84 LAPRELE CREEK 8375 7.0 6.1 115 15.5 17.0 91 RENO HILL 8400 17.8 13.6 131 23.6 20.9 113 ROACH 9700 20.9 17.6 119 26.7 23.0 116 SAND LAKE 10050 34.0 37.0 92 35.4 30.1 118 SOUTH PASS 9040 14.7 17.2 85 20.2 23.3 87 WINDY PEAK 7900 7.5 3.9 192 13.4 14.0 96 ----- ----- Basin wide percent of average 102 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 7.7 3.5 220 19.5 19.0 103 DIVIDE PEAK 8880 23.7 17.9 132 27.6 24.8 111 OLD BATTLE 10000 38.6 37.3 103 45.8 40.6 113 SANDSTONE RS 8150 15.4 7.9 195 24.6 22.3 110 WHISKEY PARK 8950 38.9 30.0 130 41.2 34.6 119 ----- ----- Basin wide percent of average 129 112 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.1 12.4 98 15.1 16.3 93 BLIND BULL SUM 8650 27.0 27.2 99 19.7 25.6 77 EAST RIM DIVIDE 7930 7.8 12.3 63 12.5 14.2 88 ELKHART PARK G.S. 9400 10.8 12.1 89 13.2 16.4 80 GROS VENTRE SUMMIT 8750 13.4 12.5 107 16.0 15.6 103 GUNSIGHT PASS 9820 13.9 -M * 16.9 -M * KENDALL R.S. 7740 8.6 8.4 102 15.2 16.8 90 LOOMIS PARK 8240 12.8 13.2 97 19.9 20.3 98 NEW FORK LAKE 8340 6.6 7.3 90 10.5 13.7 77 SNIDER BASIN 8060 11.1 11.5 97 15.8 18.8 84 SPRING CREEK DIVIDE 9000 24.0 27.9 86 26.5 30.6 87 TRIPLE PEAK 8500 23.5 22.3 105 32.0 29.1 110 ----- ----- Basin wide percent of average 94 90 LOWER GREEN RIVER HAMS FORK 7840 8.1 4.7 172 11.9 15.1 79 HEWINTA 9519 11.0 8.0 138 19.4 18.2 107 HICKERSON PARK 9145 3.3 4.7 70 11.1 10.5 106 HOLE-IN-ROCK 9150 3.2 3.9 82 11.8 10.1 117 INDIAN CREEK 9425 26.2 27.3 96 -M 29.9 * KELLEY R.S. 8180 14.0 12.8 109 20.0 24.0 83 STEEL CREEK PARK 10200 19.5 18.9 103 21.6 20.7 104 ----- ----- Basin wide percent of average 106 97 UPPER BEAR RIVER BUG LAKE 7950 16.5 16.2 102 18.8 22.8 82 HAYDEN FORK 9212 13.6 11.5 118 26.3 25.6 103 KELLEY R.S. 8180 14.0 12.8 109 20.0 24.0 83 LILY LAKE 9156 13.5 9.8 138 20.5 21.5 95 MONTE CRISTO 8960 29.3 27.0 109 29.4 30.9 95 SALT RIVER SUMMIT 7760 12.2 9.2 133 18.1 21.9 83 TRIAL LAKE 9992 24.2 26.0 93 27.6 30.0 92 ----- ----- Basin wide percent of average 110 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.