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 SATURDAY: MAY 3 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 18.0 11.5 157 30.3 24.5 124 COTTONWOOD CREEK 7670 25.5 19.0 134 28.3 32.2 88 GRAND TARGHEE 9260 55.0 -M * 38.4 -M * GRANITE CREEK 6770 16.0 12.2 131 24.9 22.6 110 GRASSY LAKE 7265 39.6 32.6 121 47.9 41.2 116 GROS VENTRE SUMMIT 8750 13.6 12.9 105 16.1 15.4 105 GUNSIGHT PASS 9820 13.4 -M * 16.9 -M * LEWIS LAKE DIVIDE 7850 40.1 34.0 118 41.0 41.9 98 PHILLIPS BENCH 8200 35.3 28.9 122 38.5 33.4 115 SALT RIVER SUMMIT 7760 12.5 9.9 126 18.0 21.8 83 SNAKE RIVER STATION 6920 18.5 11.4 162 30.3 25.7 118 SPRING CREEK DIVIDE 9000 23.7 28.3 84 26.5 30.4 87 THUMB DIVIDE 7980 17.7 14.3 124 23.1 22.2 104 TOGWOTEE PASS 9580 30.4 28.0 109 33.8 29.2 116 TWO OCEAN PLATEAU 9240 -M 31.8 * -M 32.4 * WILLOW CREEK 8380 33.1 30.1 110 43.6 38.0 115 ----- ----- Basin wide percent of average 119 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.1 26.0 108 26.7 23.8 112 BLACK BEAR 8170 47.5 39.5 120 47.5 46.2 103 CANYON 7870 18.4 10.7 172 23.3 17.9 130 FISHER CREEK 9100 44.8 37.7 119 43.1 42.2 102 MADISON PLATEAU 7750 32.8 23.7 138 35.9 30.6 117 NORTHEAST ENTRANCE 7350 9.1 6.3 144 15.4 15.0 103 PARKER PEAK 9400 31.1 24.6 126 -M 19.7 * SYLVAN LAKE 8420 22.4 23.4 96 29.9 25.0 120 THUMB DIVIDE 7980 17.7 14.3 124 23.1 22.2 104 TWO OCEAN PLATEAU 9240 -M 31.8 * -M 32.4 * WHISKEY CREEK 6800 20.7 14.5 143 27.7 24.4 114 WHITE MILL 8700 31.1 26.3 118 31.1 31.5 99 WOLVERINE 7650 8.8 6.6 133 15.5 15.4 101 ----- ----- Basin wide percent of average 123 108 WIND RIVER BURROUGHS CREEK 8750 16.7 13.2 127 20.7 19.5 106 COLD SPRINGS 9630 3.8 4.7 81 12.0 14.1 85 DEER PARK 9700 16.4 18.1 91 23.2 27.2 85 HOBBS PARK 10100 16.1 18.0 89 -M 17.2 * LITTLE WARM 9370 10.2 10.5 97 16.2 17.0 95 SOUTH PASS 9040 14.8 17.7 84 20.3 23.0 88 ST. LAWRENCE ALT 8620 4.9 5.8 84 10.1 12.3 82 TOGWOTEE PASS 9580 30.4 28.0 109 33.8 29.2 116 TOWNSEND CREEK 8700 8.7 8.6 101 14.9 15.8 94 ----- ----- Basin wide percent of average 98 96 BIGHORN BASIN BALD MTN. 9380 20.2 23.5 86 18.4 21.6 85 BEAR TRAP MEADOW 8200 7.6 2.1 362 11.7 11.1 105 BLACKWATER 9780 29.6 29.0 102 27.3 25.0 109 BONE SPRINGS DIV 9350 22.1 18.2 121 21.1 18.6 113 EVENING STAR 9200 33.3 33.3 100 38.3 30.2 127 GRAVE SPRINGS 8550 12.2 10.8 113 13.1 13.4 98 KIRWIN 9550 13.7 12.9 106 16.7 14.4 116 MARQUETTE 8760 9.3 11.0 85 12.6 14.0 90 MIDDLE POWDER 7760 15.3 14.0 109 12.5 16.0 78 OWL CREEK 8975 1.1 3.8 29 8.5 8.4 101 POWDER RIVER PASS 9480 13.3 10.2 130 17.3 16.1 107 SHELL CREEK 9580 19.4 16.7 116 18.9 17.1 111 SYLVAN LAKE 8420 22.4 23.4 96 29.9 25.0 120 SYLVAN ROAD 7120 10.4 7.6 137 23.4 20.7 113 TIMBER CREEK 7950 5.0 4.7 106 10.4 10.8 96 YOUNTS PEAK 8350 18.8 18.1 104 19.7 19.0 104 ----- ----- Basin wide percent of average 106 107 SHOSHONE RIVER BLACKWATER 9780 29.6 29.0 102 27.3 25.0 109 EVENING STAR 9200 33.3 33.3 100 38.3 30.2 127 KIRWIN 9550 13.7 12.9 106 16.7 14.4 116 MARQUETTE 8760 9.3 11.0 85 12.6 14.0 90 SYLVAN LAKE 8420 22.4 23.4 96 29.9 25.0 120 SYLVAN ROAD 7120 10.4 7.6 137 23.4 20.7 113 YOUNTS PEAK 8350 18.8 18.1 104 19.7 19.0 104 ----- ----- Basin wide percent of average 102 113 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.6 2.1 362 11.7 11.1 105 BIG GOOSE 7990 11.2 11.3 99 16.0 13.2 121 BONE SPRINGS DIV 9350 22.1 18.2 121 21.1 18.6 113 BURGESS JUNCTION 7880 16.9 13.0 130 18.3 15.6 117 CLOUD PEAK RESERVOIR 9860 19.2 16.2 119 19.5 17.4 112 DOME LAKE 8880 13.5 13.1 103 19.3 17.1 113 GRAVE SPRINGS 8550 12.2 10.8 113 13.1 13.4 98 HANSEN SAWMILL 8360 5.2 4.6 113 11.5 11.2 103 MIDDLE POWDER 7760 15.3 14.0 109 12.5 16.0 78 POWDER RIVER PASS 9480 13.3 10.2 130 17.3 16.1 107 SUCKER CREEK 8880 17.9 12.7 141 21.7 17.7 123 TIE CREEK 6870 7.9 3.8 208 15.6 13.8 113 ----- ----- Basin wide percent of average 125 109 BELLE FOURCHE BLIND PARK 6890 5.8 3.9 149 15.0 14.4 104 COLE CANYON 5910 7.2 4.1 176 12.1 9.8 123 NORTH RAPID CREEK 6130 9.7 3.1 313 14.0 11.6 121 ----- ----- Basin wide percent of average 205 115 UPPER N. PLATTE RIVER COLUMBINE 9160 25.9 20.0 130 33.0 29.4 112 DIVIDE PEAK 8880 23.9 18.6 128 27.6 24.5 113 ELK RIVER 8700 21.2 14.0 151 26.7 23.3 115 JOE WRIGHT 10120 28.6 25.1 114 33.6 30.4 111 NORTH FRENCH CREEK 10130 34.2 34.5 99 35.2 30.0 117 OLD BATTLE 10000 38.5 37.1 104 45.5 40.2 113 SAGE CREEK BASIN 7850 14.5 10.8 134 19.7 14.2 139 SOUTH BRUSH CREEK 8440 10.9 10.5 104 20.2 20.4 99 TOWER 10500 49.5 52.4 94 -M 45.6 * WEBBER SPRINGS 9250 28.3 24.5 116 36.1 31.4 115 WILLOW CREEK PASS 9540 21.2 14.0 151 19.7 15.9 124 ----- ----- Basin wide percent of average 113 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 23.3 28.0 83 26.8 27.3 98 CASPER MTN. 7900 16.9 16.6 102 19.1 19.9 96 DEADMAN HILL 10220 21.0 19.7 107 23.6 21.2 111 DEER PARK 9700 16.4 18.1 91 23.2 27.2 85 LAPRELE CREEK 8375 7.6 6.6 115 15.3 16.7 92 RENO HILL 8400 18.2 14.2 128 23.3 20.6 113 ROACH 9700 21.0 18.1 116 26.6 22.7 117 SAND LAKE 10050 33.8 37.0 91 35.2 29.7 119 SOUTH PASS 9040 14.8 17.7 84 20.3 23.0 88 WINDY PEAK 7900 7.7 4.5 171 13.3 13.8 96 ----- ----- Basin wide percent of average 100 102 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 8.5 4.0 212 19.5 18.8 104 DIVIDE PEAK 8880 23.9 18.6 128 27.6 24.5 113 OLD BATTLE 10000 38.5 37.1 104 45.5 40.2 113 SANDSTONE RS 8150 15.6 8.7 179 24.6 22.1 111 WHISKEY PARK 8950 38.9 30.3 128 41.1 34.2 120 ----- ----- Basin wide percent of average 127 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 12.9 13.0 99 15.1 16.1 94 BLIND BULL SUM 8650 27.6 27.6 100 19.7 25.4 78 EAST RIM DIVIDE 7930 8.5 12.8 66 12.5 14.0 89 ELKHART PARK G.S. 9400 11.3 12.5 90 13.2 16.2 81 GROS VENTRE SUMMIT 8750 13.6 12.9 105 16.1 15.4 105 GUNSIGHT PASS 9820 13.4 -M * 16.9 -M * KENDALL R.S. 7740 9.5 9.2 103 15.3 16.7 92 LOOMIS PARK 8240 13.8 13.8 100 19.8 20.1 99 NEW FORK LAKE 8340 7.7 7.9 97 10.6 13.6 78 SNIDER BASIN 8060 12.2 12.1 101 15.7 18.7 84 SPRING CREEK DIVIDE 9000 23.7 28.3 84 26.5 30.4 87 TRIPLE PEAK 8500 24.4 23.1 106 31.9 28.9 110 ----- ----- Basin wide percent of average 95 91 LOWER GREEN RIVER HAMS FORK 7840 9.5 5.3 179 11.9 14.9 80 HEWINTA 9519 12.0 8.6 140 19.3 18.0 107 HICKERSON PARK 9145 4.1 5.2 79 10.9 10.4 105 HOLE-IN-ROCK 9150 4.0 4.3 93 11.8 9.9 119 INDIAN CREEK 9425 27.5 27.9 99 -M 29.7 * KELLEY R.S. 8180 15.1 13.5 112 20.0 23.8 84 STEEL CREEK PARK 10200 19.7 18.8 105 21.6 20.5 105 ----- ----- Basin wide percent of average 110 98 UPPER BEAR RIVER BUG LAKE 7950 18.4 17.2 107 18.7 22.6 83 HAYDEN FORK 9212 16.4 12.3 133 26.2 25.4 103 KELLEY R.S. 8180 15.1 13.5 112 20.0 23.8 84 LILY LAKE 9156 14.7 10.5 140 20.4 21.3 96 MONTE CRISTO 8960 31.2 27.7 113 29.4 30.6 96 SALT RIVER SUMMIT 7760 12.5 9.9 126 18.0 21.8 83 TRIAL LAKE 9992 24.6 26.3 94 27.5 29.7 93 ----- ----- Basin wide percent of average 113 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.