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 WEDNESDAY: APRIL 16 , 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 16.6 * -M 23.0 * COTTONWOOD CREEK 7670 26.8 23.6 114 27.0 29.9 90 GRAND TARGHEE 9260 51.6 -M * 36.0 -M * GRANITE CREEK 6770 18.8 16.8 112 24.5 21.2 116 GRASSY LAKE 7265 38.3 37.0 104 45.1 38.7 117 GROS VENTRE SUMMIT 8750 13.1 14.6 90 15.1 14.1 107 GUNSIGHT PASS 9820 13.0 -M * 15.3 -M * LEWIS LAKE DIVIDE 7850 37.5 36.7 102 39.9 39.5 101 PHILLIPS BENCH 8200 35.8 30.6 117 37.2 31.3 119 SALT RIVER SUMMIT 7760 -M 14.3 * -M 20.4 * SNAKE RIVER STATION 6920 20.0 17.3 116 29.1 24.1 121 SPRING CREEK DIVIDE 9000 23.5 28.6 82 25.4 28.6 89 THUMB DIVIDE 7980 19.0 18.5 103 22.1 20.5 108 TOGWOTEE PASS 9580 28.7 26.8 107 31.3 26.9 116 TWO OCEAN PLATEAU 9240 -M 30.7 * -M 30.0 * WILLOW CREEK 8380 34.6 31.9 108 40.8 35.1 116 ----- ----- Basin wide percent of average 105 109 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.0 25.5 106 25.6 21.9 117 BLACK BEAR 8170 47.4 41.0 116 44.8 43.5 103 CANYON 7870 18.4 13.8 133 22.0 16.7 132 FISHER CREEK 9100 43.3 37.1 117 40.6 39.3 103 MADISON PLATEAU 7750 32.4 26.0 125 33.7 29.0 116 NORTHEAST ENTRANCE 7350 -M 10.5 * -M 13.8 * PARKER PEAK 9400 29.1 23.4 124 25.9 17.9 145 SYLVAN LAKE 8420 22.5 24.3 93 28.1 22.9 123 THUMB DIVIDE 7980 19.0 18.5 103 22.1 20.5 108 TWO OCEAN PLATEAU 9240 -M 30.7 * -M 30.0 * WHISKEY CREEK 6800 19.3 17.8 108 26.1 22.7 115 WHITE MILL 8700 29.7 26.1 114 29.4 29.2 101 WOLVERINE 7650 10.7 10.9 98 15.2 14.0 109 ----- ----- Basin wide percent of average 113 113 WIND RIVER BURROUGHS CREEK 8750 16.8 15.1 111 19.9 17.8 112 COLD SPRINGS 9630 7.0 6.9 101 11.0 12.2 90 DEER PARK 9700 17.0 17.7 96 21.8 24.3 90 HOBBS PARK 10100 15.4 16.8 92 15.7 14.8 106 LITTLE WARM 9370 10.8 12.5 86 15.0 15.0 100 SOUTH PASS 9040 15.6 17.7 88 18.8 20.5 92 ST. LAWRENCE ALT 8620 6.7 7.3 92 9.1 10.3 88 TOGWOTEE PASS 9580 28.7 26.8 107 31.3 26.9 116 TOWNSEND CREEK 8700 9.0 9.8 92 13.2 13.5 98 ----- ----- Basin wide percent of average 97 100 BIGHORN BASIN BALD MTN. 9380 17.8 22.0 81 16.9 19.2 88 BEAR TRAP MEADOW 8200 9.0 4.6 196 9.9 9.5 104 BLACKWATER 9780 27.8 27.0 103 25.7 22.8 113 BONE SPRINGS DIV 9350 18.9 17.7 107 19.0 16.4 116 EVENING STAR 9200 31.8 32.1 99 36.2 27.7 131 GRAVE SPRINGS 8550 10.7 10.8 99 11.2 11.5 97 KIRWIN 9550 13.2 12.4 106 15.8 12.6 125 MARQUETTE 8760 7.7 10.6 73 11.2 11.6 97 MIDDLE POWDER 7760 12.8 14.0 91 10.4 14.0 74 OWL CREEK 8975 5.0 5.1 98 7.3 6.9 106 POWDER RIVER PASS 9480 12.8 11.8 108 15.7 13.9 113 SHELL CREEK 9580 17.1 16.1 106 16.7 15.0 111 SYLVAN LAKE 8420 22.5 24.3 93 28.1 22.9 123 SYLVAN ROAD 7120 13.3 11.8 113 22.8 19.1 119 TIMBER CREEK 7950 5.2 5.6 93 8.9 8.7 102 YOUNTS PEAK 8350 18.0 18.1 99 18.9 17.5 108 ----- ----- Basin wide percent of average 100 110 SHOSHONE RIVER BLACKWATER 9780 27.8 27.0 103 25.7 22.8 113 EVENING STAR 9200 31.8 32.1 99 36.2 27.7 131 KIRWIN 9550 13.2 12.4 106 15.8 12.6 125 MARQUETTE 8760 7.7 10.6 73 11.2 11.6 97 SYLVAN LAKE 8420 22.5 24.3 93 28.1 22.9 123 SYLVAN ROAD 7120 13.3 11.8 113 22.8 19.1 119 YOUNTS PEAK 8350 18.0 18.1 99 18.9 17.5 108 ----- ----- Basin wide percent of average 99 118 POWDER-TONGUE BEAR TRAP MEADOW 8200 9.0 4.6 196 9.9 9.5 104 BIG GOOSE 7990 10.5 12.4 85 13.8 10.7 129 BONE SPRINGS DIV 9350 18.9 17.7 107 19.0 16.4 116 BURGESS JUNCTION 7880 14.3 13.3 108 15.7 13.7 115 CLOUD PEAK RESERVOIR 9860 17.1 15.4 111 17.3 14.8 117 DOME LAKE 8880 12.8 14.0 91 16.6 14.9 111 GRAVE SPRINGS 8550 10.7 10.8 99 11.2 11.5 97 HANSEN SAWMILL 8360 7.4 6.1 121 10.4 9.4 111 MIDDLE POWDER 7760 12.8 14.0 91 10.4 14.0 74 POWDER RIVER PASS 9480 12.8 11.8 108 15.7 13.9 113 SUCKER CREEK 8880 16.2 13.5 120 18.8 15.3 123 TIE CREEK 6870 8.7 5.4 161 13.3 11.5 116 ----- ----- Basin wide percent of average 109 111 BELLE FOURCHE BLIND PARK 6890 8.5 7.5 113 12.7 12.4 102 COLE CANYON 5910 6.7 7.1 94 9.2 7.7 119 NORTH RAPID CREEK 6130 9.9 8.7 114 11.1 9.6 116 ----- ----- Basin wide percent of average 108 111 UPPER N. PLATTE RIVER COLUMBINE 9160 28.8 24.6 117 31.0 27.3 114 DIVIDE PEAK 8880 25.9 20.9 124 26.2 22.5 116 ELK RIVER 8700 29.0 19.5 149 25.5 21.4 119 JOE WRIGHT 10120 27.1 23.8 114 30.8 27.4 112 NORTH FRENCH CREEK 10130 35.3 32.8 108 33.0 27.1 122 OLD BATTLE 10000 37.8 34.8 109 43.6 37.3 117 SAGE CREEK BASIN 7850 19.7 12.1 163 19.0 13.1 145 SOUTH BRUSH CREEK 8440 15.6 13.2 118 19.2 18.2 105 TOWER 10500 47.7 49.8 96 -M 41.9 * WEBBER SPRINGS 9250 30.1 26.1 115 34.1 29.0 118 WILLOW CREEK PASS 9540 19.5 13.7 142 18.5 14.2 130 ----- ----- Basin wide percent of average 117 118 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 24.0 26.7 90 25.0 24.5 102 CASPER MTN. 7900 15.3 16.9 91 16.3 16.8 97 DEADMAN HILL 10220 20.7 18.4 112 21.7 18.9 115 DEER PARK 9700 17.0 17.7 96 21.8 24.3 90 LAPRELE CREEK 8375 8.7 10.1 86 13.3 14.4 92 RENO HILL 8400 15.5 15.9 97 18.3 17.5 105 ROACH 9700 21.6 18.4 117 24.6 20.5 120 SAND LAKE 10050 33.0 35.1 94 32.8 26.7 123 SOUTH PASS 9040 15.6 17.7 88 18.8 20.5 92 WINDY PEAK 7900 9.5 7.9 120 11.7 11.9 98 ----- ----- Basin wide percent of average 98 104 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.7 8.4 187 18.3 17.3 106 DIVIDE PEAK 8880 25.9 20.9 124 26.2 22.5 116 OLD BATTLE 10000 37.8 34.8 109 43.6 37.3 117 SANDSTONE RS 8150 19.3 13.3 145 23.6 20.2 117 WHISKEY PARK 8950 39.2 30.6 128 39.0 31.2 125 ----- ----- Basin wide percent of average 128 117 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.8 15.3 90 14.2 14.6 97 BLIND BULL SUM 8650 27.4 28.9 95 19.1 23.9 80 EAST RIM DIVIDE 7930 9.4 14.0 67 11.9 13.0 92 ELKHART PARK G.S. 9400 11.3 14.0 81 12.6 14.6 86 GROS VENTRE SUMMIT 8750 13.1 14.6 90 15.1 14.1 107 GUNSIGHT PASS 9820 13.0 -M * 15.3 -M * KENDALL R.S. 7740 12.0 13.5 89 14.8 15.6 95 LOOMIS PARK 8240 16.6 17.0 98 18.9 18.7 101 NEW FORK LAKE 8340 9.6 11.2 86 10.0 12.3 81 SNIDER BASIN 8060 14.0 14.9 94 15.3 17.5 87 SPRING CREEK DIVIDE 9000 23.5 28.6 82 25.4 28.6 89 TRIPLE PEAK 8500 26.6 25.9 103 30.5 26.8 114 ----- ----- Basin wide percent of average 90 94 LOWER GREEN RIVER HAMS FORK 7840 12.6 9.8 129 11.0 13.4 82 HEWINTA 9519 16.7 12.2 137 18.6 16.3 114 HICKERSON PARK 9145 7.7 8.2 94 11.0 9.0 122 HOLE-IN-ROCK 9150 6.6 7.2 92 11.6 8.6 135 INDIAN CREEK 9425 27.2 29.6 92 -M 27.7 * KELLEY R.S. 8180 15.7 17.1 92 19.1 22.1 86 STEEL CREEK PARK 10200 17.4 17.4 100 20.7 18.5 112 ----- ----- Basin wide percent of average 102 105 UPPER BEAR RIVER BUG LAKE 7950 18.7 21.6 87 18.0 20.9 86 HAYDEN FORK 9212 20.3 16.4 124 25.1 23.2 108 KELLEY R.S. 8180 15.7 17.1 92 19.1 22.1 86 LILY LAKE 9156 16.8 14.4 117 19.6 19.5 101 MONTE CRISTO 8960 31.2 30.5 102 28.1 28.0 100 SALT RIVER SUMMIT 7760 -M 14.3 * -M 20.4 * TRIAL LAKE 9992 23.9 26.4 91 26.4 27.3 97 ----- ----- Basin wide percent of average 100 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.