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: APRIL 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 -M 18.0 * -M 22.0 * COTTONWOOD CREEK 7670 26.2 24.4 107 26.2 28.3 93 GRAND TARGHEE 9260 50.5 -M * 34.9 -M * GRANITE CREEK 6770 19.5 18.4 106 24.2 20.4 119 GRASSY LAKE 7265 37.8 36.7 103 43.9 37.0 119 GROS VENTRE SUMMIT 8750 13.6 14.5 94 14.7 13.3 111 GUNSIGHT PASS 9820 12.8 -M * 15.0 -M * LEWIS LAKE DIVIDE 7850 36.8 36.3 101 38.9 37.8 103 PHILLIPS BENCH 8200 34.9 29.8 117 36.3 29.9 121 SALT RIVER SUMMIT 7760 14.3 14.9 96 16.7 19.4 86 SNAKE RIVER STATION 6920 21.5 19.0 113 28.5 22.9 124 SPRING CREEK DIVIDE 9000 23.6 27.5 86 24.9 27.3 91 THUMB DIVIDE 7980 19.9 19.3 103 21.6 19.5 111 TOGWOTEE PASS 9580 28.4 25.7 111 30.6 25.4 120 TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 * WILLOW CREEK 8380 34.4 31.1 111 39.7 33.2 120 ----- ----- Basin wide percent of average 104 110 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 26.5 24.1 110 24.9 20.7 120 BLACK BEAR 8170 47.5 40.3 118 -M 41.6 * CANYON 7870 18.2 14.0 130 21.5 15.9 135 FISHER CREEK 9100 43.0 35.9 120 -M 37.5 * MADISON PLATEAU 7750 31.0 25.8 120 33.0 27.6 120 NORTHEAST ENTRANCE 7350 -M 11.2 * -M 13.1 * PARKER PEAK 9400 27.7 22.3 124 -M 16.8 * SYLVAN LAKE 8420 22.6 23.2 97 27.2 21.6 126 THUMB DIVIDE 7980 19.9 19.3 103 21.6 19.5 111 TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 * WHISKEY CREEK 6800 19.3 17.7 109 25.4 21.6 118 WHITE MILL 8700 29.1 25.0 116 -M 27.8 * WOLVERINE 7650 11.7 11.7 100 14.8 13.2 112 ----- ----- Basin wide percent of average 114 120 WIND RIVER BURROUGHS CREEK 8750 16.8 14.9 113 19.6 16.8 117 COLD SPRINGS 9630 7.1 8.8 81 10.3 11.1 93 DEER PARK 9700 15.9 17.3 92 20.5 22.7 90 HOBBS PARK 10100 14.5 15.7 92 14.6 13.4 109 LITTLE WARM 9370 10.6 12.3 86 14.5 13.9 104 SOUTH PASS 9040 14.9 17.2 87 17.7 19.1 93 ST. LAWRENCE ALT 8620 7.0 7.6 92 8.6 9.2 93 TOGWOTEE PASS 9580 28.4 25.7 111 30.6 25.4 120 TOWNSEND CREEK 8700 9.1 9.4 97 12.4 12.1 102 ----- ----- Basin wide percent of average 96 104 BIGHORN BASIN BALD MTN. 9380 17.2 20.3 85 15.9 18.0 88 BEAR TRAP MEADOW 8200 9.7 5.1 190 9.7 8.6 113 BLACKWATER 9780 27.0 25.4 106 24.4 21.2 115 BONE SPRINGS DIV 9350 17.9 16.8 107 17.9 15.1 119 EVENING STAR 9200 31.8 30.5 104 34.6 26.1 133 GRAVE SPRINGS 8550 10.4 9.8 106 10.8 10.1 107 KIRWIN 9550 12.7 11.8 108 15.1 11.6 130 MARQUETTE 8760 7.4 9.6 77 10.4 10.2 102 MIDDLE POWDER 7760 12.1 12.4 98 9.7 12.8 76 OWL CREEK 8975 6.0 5.8 103 7.1 6.2 115 POWDER RIVER PASS 9480 12.8 11.2 114 14.9 12.8 116 SHELL CREEK 9580 16.2 15.2 107 15.5 13.8 112 SYLVAN LAKE 8420 22.6 23.2 97 27.2 21.6 126 SYLVAN ROAD 7120 13.6 12.8 106 22.2 18.1 123 TIMBER CREEK 7950 4.6 5.9 78 8.1 7.7 105 YOUNTS PEAK 8350 17.9 17.6 102 18.3 16.6 110 ----- ----- Basin wide percent of average 103 114 SHOSHONE RIVER BLACKWATER 9780 27.0 25.4 106 24.4 21.2 115 EVENING STAR 9200 31.8 30.5 104 34.6 26.1 133 KIRWIN 9550 12.7 11.8 108 15.1 11.6 130 MARQUETTE 8760 7.4 9.6 77 10.4 10.2 102 SYLVAN LAKE 8420 22.6 23.2 97 27.2 21.6 126 SYLVAN ROAD 7120 13.6 12.8 106 22.2 18.1 123 YOUNTS PEAK 8350 17.9 17.6 102 18.3 16.6 110 ----- ----- Basin wide percent of average 102 121 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.7 5.1 190 9.7 8.6 113 BIG GOOSE 7990 9.6 11.3 85 12.6 9.0 140 BONE SPRINGS DIV 9350 17.9 16.8 107 17.9 15.1 119 BURGESS JUNCTION 7880 12.7 12.2 104 14.1 12.6 112 CLOUD PEAK RESERVOIR 9860 16.0 13.9 115 15.6 13.4 116 DOME LAKE 8880 12.1 13.0 93 15.3 13.6 112 GRAVE SPRINGS 8550 10.4 9.8 106 10.8 10.1 107 HANSEN SAWMILL 8360 7.5 6.6 114 9.7 8.5 114 MIDDLE POWDER 7760 12.1 12.4 98 9.7 12.8 76 POWDER RIVER PASS 9480 12.8 11.2 114 14.9 12.8 116 SUCKER CREEK 8880 14.8 12.3 120 16.9 14.0 121 TIE CREEK 6870 8.0 6.1 131 12.0 10.3 117 ----- ----- Basin wide percent of average 110 113 BELLE FOURCHE BLIND PARK 6890 8.1 8.3 98 10.9 11.4 96 COLE CANYON 5910 6.3 7.0 90 8.0 6.9 116 NORTH RAPID CREEK 6130 8.6 8.6 100 8.9 8.8 101 ----- ----- Basin wide percent of average 96 103 UPPER N. PLATTE RIVER COLUMBINE 9160 27.9 25.1 111 28.6 25.9 110 DIVIDE PEAK 8880 23.9 20.4 117 24.0 21.3 113 ELK RIVER 8700 27.5 20.0 138 23.8 20.1 118 JOE WRIGHT 10120 24.1 22.1 109 27.6 25.5 108 NORTH FRENCH CREEK 10130 32.0 30.5 105 30.2 25.3 119 OLD BATTLE 10000 34.6 33.1 105 40.1 35.5 113 SAGE CREEK BASIN 7850 17.8 11.8 151 18.1 12.3 147 SOUTH BRUSH CREEK 8440 15.1 13.3 114 17.5 16.9 104 TOWER 10500 44.5 47.0 95 -M 39.4 * WEBBER SPRINGS 9250 27.5 26.4 104 30.8 27.4 112 WILLOW CREEK PASS 9540 16.3 12.6 129 16.0 13.2 121 ----- ----- Basin wide percent of average 111 115 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.1 24.6 90 22.6 22.8 99 CASPER MTN. 7900 13.6 15.2 89 14.3 15.0 95 DEADMAN HILL 10220 17.9 17.0 105 18.6 17.4 107 DEER PARK 9700 15.9 17.3 92 20.5 22.7 90 LAPRELE CREEK 8375 8.7 11.0 79 11.5 13.0 88 RENO HILL 8400 14.2 14.9 95 16.1 15.6 103 ROACH 9700 19.9 17.7 112 22.4 19.2 117 SAND LAKE 10050 29.4 33.4 88 28.8 24.9 116 SOUTH PASS 9040 14.9 17.2 87 17.7 19.1 93 WINDY PEAK 7900 8.9 8.4 106 10.2 10.9 94 ----- ----- Basin wide percent of average 94 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 17.2 10.5 164 17.4 16.3 107 DIVIDE PEAK 8880 23.9 20.4 117 24.0 21.3 113 OLD BATTLE 10000 34.6 33.1 105 40.1 35.5 113 SANDSTONE RS 8150 18.5 14.5 128 22.1 19.2 115 WHISKEY PARK 8950 34.5 30.6 113 34.5 29.4 117 ----- ----- Basin wide percent of average 118 113 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.8 15.0 92 13.8 13.8 100 BLIND BULL SUM 8650 26.9 28.6 94 19.0 22.9 83 EAST RIM DIVIDE 7930 9.9 13.5 73 11.9 12.4 96 ELKHART PARK G.S. 9400 11.6 13.8 84 12.3 13.8 89 GROS VENTRE SUMMIT 8750 13.6 14.5 94 14.7 13.3 111 GUNSIGHT PASS 9820 12.8 -M * 15.0 -M * KENDALL R.S. 7740 13.1 14.4 91 14.7 14.9 99 LOOMIS PARK 8240 17.1 17.5 98 18.7 17.9 104 NEW FORK LAKE 8340 10.0 11.5 87 10.0 11.7 85 SNIDER BASIN 8060 14.3 14.9 96 15.2 16.6 92 SPRING CREEK DIVIDE 9000 23.6 27.5 86 24.9 27.3 91 TRIPLE PEAK 8500 26.9 25.6 105 29.8 25.5 117 ----- ----- Basin wide percent of average 92 97 LOWER GREEN RIVER HAMS FORK 7840 13.2 11.5 115 10.9 12.6 87 HEWINTA 9519 16.6 12.4 134 17.7 15.1 117 HICKERSON PARK 9145 8.3 8.0 104 10.5 8.2 128 HOLE-IN-ROCK 9150 7.3 7.4 99 10.8 7.8 138 INDIAN CREEK 9425 27.2 28.8 94 -M 26.3 * KELLEY R.S. 8180 16.0 17.3 92 18.8 21.0 90 STEEL CREEK PARK 10200 16.5 16.3 101 19.2 16.9 114 ----- ----- Basin wide percent of average 103 108 UPPER BEAR RIVER BUG LAKE 7950 18.5 21.6 86 17.4 19.8 88 HAYDEN FORK 9212 21.0 16.8 125 23.8 21.7 110 KELLEY R.S. 8180 16.0 17.3 92 18.8 21.0 90 LILY LAKE 9156 15.8 14.2 111 18.4 18.1 102 MONTE CRISTO 8960 30.1 30.4 99 27.0 26.3 103 SALT RIVER SUMMIT 7760 14.3 14.9 96 16.7 19.4 86 TRIAL LAKE 9992 23.2 25.7 90 25.0 25.7 97 ----- ----- Basin wide percent of average 99 97 ----------------------------------------------------------------------------- -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.