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: APRIL 28 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 13.3 * -M 24.1 * COTTONWOOD CREEK 7670 26.7 20.7 129 28.1 31.5 89 GRAND TARGHEE 9260 54.6 -M * 38.0 -M * GRANITE CREEK 6770 18.1 13.8 131 24.9 22.1 113 GRASSY LAKE 7265 40.2 34.4 117 47.5 40.5 117 GROS VENTRE SUMMIT 8750 13.6 13.7 99 15.7 15.0 105 GUNSIGHT PASS 9820 13.0 -M * 16.5 -M * LEWIS LAKE DIVIDE 7850 40.2 35.3 114 40.9 41.2 99 PHILLIPS BENCH 8200 36.6 30.0 122 38.4 32.7 117 SALT RIVER SUMMIT 7760 13.2 11.6 114 17.8 21.4 83 SNAKE RIVER STATION 6920 20.9 13.4 156 30.2 25.2 120 SPRING CREEK DIVIDE 9000 23.6 28.8 82 26.4 29.9 88 THUMB DIVIDE 7980 19.7 15.9 124 23.0 21.7 106 TOGWOTEE PASS 9580 30.2 27.8 109 33.2 28.6 116 TWO OCEAN PLATEAU 9240 -M 31.7 * -M 31.7 * WILLOW CREEK 8380 34.8 31.2 112 43.0 37.1 116 ----- ----- Basin wide percent of average 115 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 28.0 25.9 108 26.5 23.2 114 BLACK BEAR 8170 47.7 40.5 118 47.0 45.4 104 CANYON 7870 18.8 11.9 158 22.9 17.5 131 FISHER CREEK 9100 44.9 37.8 119 42.5 41.4 103 MADISON PLATEAU 7750 33.5 24.9 135 35.4 30.1 118 NORTHEAST ENTRANCE 7350 10.3 7.8 132 15.1 14.6 103 PARKER PEAK 9400 30.6 24.4 125 -M 19.2 * SYLVAN LAKE 8420 23.6 24.0 98 29.5 24.3 121 THUMB DIVIDE 7980 19.7 15.9 124 23.0 21.7 106 TWO OCEAN PLATEAU 9240 -M 31.7 * -M 31.7 * WHISKEY CREEK 6800 20.5 15.9 129 27.4 23.9 115 WHITE MILL 8700 30.7 26.4 116 30.6 30.8 99 WOLVERINE 7650 10.2 7.8 131 15.6 14.9 105 ----- ----- Basin wide percent of average 121 110 WIND RIVER BURROUGHS CREEK 8750 17.1 14.1 121 20.6 19.0 108 COLD SPRINGS 9630 5.4 4.8 113 11.5 13.6 85 DEER PARK 9700 16.8 19.1 88 22.5 26.5 85 HOBBS PARK 10100 15.9 18.0 88 17.2 16.5 104 LITTLE WARM 9370 10.8 11.5 94 15.7 16.4 96 SOUTH PASS 9040 15.4 18.2 85 19.6 22.2 88 ST. LAWRENCE ALT 8620 6.2 6.4 97 9.4 11.7 80 TOGWOTEE PASS 9580 30.2 27.8 109 33.2 28.6 116 TOWNSEND CREEK 8700 9.5 9.6 99 14.1 15.1 93 ----- ----- Basin wide percent of average 98 97 BIGHORN BASIN BALD MTN. 9380 18.8 23.4 80 17.6 20.9 84 BEAR TRAP MEADOW 8200 7.7 2.8 275 10.7 10.6 101 BLACKWATER 9780 29.4 28.4 104 26.9 24.3 111 BONE SPRINGS DIV 9350 20.0 18.2 110 19.9 17.9 111 EVENING STAR 9200 33.5 33.0 102 37.8 29.5 128 GRAVE SPRINGS 8550 11.1 11.0 101 12.0 12.8 94 KIRWIN 9550 14.1 13.0 108 16.4 13.9 118 MARQUETTE 8760 9.2 11.1 83 11.9 13.3 89 MIDDLE POWDER 7760 14.1 14.6 97 11.2 15.4 73 OWL CREEK 8975 3.5 4.0 88 8.2 7.9 104 POWDER RIVER PASS 9480 13.4 11.1 121 16.6 15.4 108 SHELL CREEK 9580 18.4 16.8 110 17.9 16.4 109 SYLVAN LAKE 8420 23.6 24.0 98 29.5 24.3 121 SYLVAN ROAD 7120 12.5 8.9 140 23.3 20.2 115 TIMBER CREEK 7950 5.3 4.9 108 9.6 10.1 95 YOUNTS PEAK 8350 18.8 18.2 103 19.6 18.5 106 ----- ----- Basin wide percent of average 104 107 SHOSHONE RIVER BLACKWATER 9780 29.4 28.4 104 26.9 24.3 111 EVENING STAR 9200 33.5 33.0 102 37.8 29.5 128 KIRWIN 9550 14.1 13.0 108 16.4 13.9 118 MARQUETTE 8760 9.2 11.1 83 11.9 13.3 89 SYLVAN LAKE 8420 23.6 24.0 98 29.5 24.3 121 SYLVAN ROAD 7120 12.5 8.9 140 23.3 20.2 115 YOUNTS PEAK 8350 18.8 18.2 103 19.6 18.5 106 ----- ----- Basin wide percent of average 103 115 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.7 2.8 275 10.7 10.6 101 BIG GOOSE 7990 10.6 12.0 88 14.7 12.5 118 BONE SPRINGS DIV 9350 20.0 18.2 110 19.9 17.9 111 BURGESS JUNCTION 7880 15.0 13.4 112 16.5 15.1 109 CLOUD PEAK RESERVOIR 9860 18.0 16.3 110 18.2 16.6 110 DOME LAKE 8880 13.1 13.8 95 17.8 16.4 109 GRAVE SPRINGS 8550 11.1 11.0 101 12.0 12.8 94 HANSEN SAWMILL 8360 5.7 5.1 112 10.9 10.7 102 MIDDLE POWDER 7760 14.1 14.6 97 11.2 15.4 73 POWDER RIVER PASS 9480 13.4 11.1 121 16.6 15.4 108 SUCKER CREEK 8880 16.6 13.4 124 19.7 17.0 116 TIE CREEK 6870 7.7 4.5 171 14.0 13.1 107 ----- ----- Basin wide percent of average 112 105 BELLE FOURCHE BLIND PARK 6890 5.7 4.8 119 13.0 13.8 94 COLE CANYON 5910 5.9 5.6 105 9.7 9.1 107 NORTH RAPID CREEK 6130 8.3 5.1 163 11.3 11.0 103 ----- ----- Basin wide percent of average 128 100 UPPER N. PLATTE RIVER COLUMBINE 9160 26.9 22.0 122 31.9 28.8 111 DIVIDE PEAK 8880 24.1 20.0 120 26.6 23.9 111 ELK RIVER 8700 23.7 16.2 146 26.0 22.7 115 JOE WRIGHT 10120 27.4 25.0 110 32.2 29.5 109 NORTH FRENCH CREEK 10130 34.2 34.3 100 34.3 29.1 118 OLD BATTLE 10000 38.1 36.5 104 44.9 39.4 114 SAGE CREEK BASIN 7850 16.9 11.6 146 19.3 13.9 139 SOUTH BRUSH CREEK 8440 13.2 11.7 113 19.6 19.7 99 TOWER 10500 48.7 51.9 94 46.8 44.5 105 WEBBER SPRINGS 9250 29.6 25.6 116 35.1 30.7 114 WILLOW CREEK PASS 9540 20.8 14.3 145 19.0 15.4 123 ----- ----- Basin wide percent of average 113 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.1 28.3 85 26.2 26.5 99 CASPER MTN. 7900 14.9 17.5 85 17.5 19.0 92 DEADMAN HILL 10220 20.9 19.5 107 22.6 20.5 110 DEER PARK 9700 16.8 19.1 88 22.5 26.5 85 LAPRELE CREEK 8375 7.6 7.8 97 14.1 16.0 88 RENO HILL 8400 15.6 15.3 102 20.2 19.7 103 ROACH 9700 20.9 18.7 112 25.4 22.0 115 SAND LAKE 10050 33.2 36.8 90 34.2 28.8 119 SOUTH PASS 9040 15.4 18.2 85 19.6 22.2 88 WINDY PEAK 7900 8.4 5.7 147 12.2 13.2 92 ----- ----- Basin wide percent of average 95 100 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.0 5.4 204 18.7 18.3 102 DIVIDE PEAK 8880 24.1 20.0 120 26.6 23.9 111 OLD BATTLE 10000 38.1 36.5 104 44.9 39.4 114 SANDSTONE RS 8150 17.1 10.5 163 23.9 21.6 111 WHISKEY PARK 8950 39.2 30.7 128 40.2 33.3 121 ----- ----- Basin wide percent of average 126 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.6 14.1 96 14.9 15.6 96 BLIND BULL SUM 8650 28.6 28.2 101 19.5 24.9 78 EAST RIM DIVIDE 7930 9.7 13.6 71 12.4 13.7 91 ELKHART PARK G.S. 9400 11.6 13.3 87 13.1 15.7 83 GROS VENTRE SUMMIT 8750 13.6 13.7 99 15.7 15.0 105 GUNSIGHT PASS 9820 13.0 -M * 16.5 -M * KENDALL R.S. 7740 11.2 10.9 103 15.3 16.4 93 LOOMIS PARK 8240 15.9 15.0 106 19.8 19.7 101 NEW FORK LAKE 8340 9.3 9.2 101 10.5 13.2 80 SNIDER BASIN 8060 13.6 13.3 102 15.8 18.3 86 SPRING CREEK DIVIDE 9000 23.6 28.8 82 26.4 29.9 88 TRIPLE PEAK 8500 25.9 24.5 106 31.8 28.3 112 ----- ----- Basin wide percent of average 96 93 LOWER GREEN RIVER HAMS FORK 7840 11.5 6.9 167 11.8 14.5 81 HEWINTA 9519 15.2 10.1 150 19.1 17.5 109 HICKERSON PARK 9145 5.6 6.4 87 11.1 10.0 111 HOLE-IN-ROCK 9150 5.8 5.4 107 11.8 9.5 124 INDIAN CREEK 9425 28.1 28.9 97 -M 29.1 * KELLEY R.S. 8180 16.2 14.9 109 19.8 23.3 85 STEEL CREEK PARK 10200 19.0 18.4 103 21.2 19.9 107 ----- ----- Basin wide percent of average 111 100 UPPER BEAR RIVER BUG LAKE 7950 18.6 19.1 97 18.7 22.1 85 HAYDEN FORK 9212 17.5 13.9 126 25.9 24.8 104 KELLEY R.S. 8180 16.2 14.9 109 19.8 23.3 85 LILY LAKE 9156 15.9 12.0 132 20.1 20.8 97 MONTE CRISTO 8960 32.7 29.0 113 29.2 29.8 98 SALT RIVER SUMMIT 7760 13.2 11.6 114 17.8 21.4 83 TRIAL LAKE 9992 25.2 26.6 95 27.2 29.0 94 ----- ----- Basin wide percent of average 110 93 ----------------------------------------------------------------------------- -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.