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: MARCH 19 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 16.3 17.6 93 23.6 20.5 115 COTTONWOOD CREEK 7670 22.1 22.3 99 22.4 25.8 87 GRAND TARGHEE 9260 45.7 -M * 32.3 -M * GRANITE CREEK 6770 16.3 18.3 89 21.3 19.2 111 GRASSY LAKE 7265 31.3 33.7 93 -M 34.3 * GROS VENTRE SUMMIT 8750 11.8 13.3 89 12.8 12.1 106 GUNSIGHT PASS 9820 10.9 -M * 12.9 -M * LEWIS LAKE DIVIDE 7850 30.2 33.6 90 34.1 35.0 97 PHILLIPS BENCH 8200 30.1 27.2 111 32.0 27.5 116 SALT RIVER SUMMIT 7760 12.5 13.7 91 14.5 17.6 82 SNAKE RIVER STATION 6920 17.3 18.6 93 24.4 21.3 115 SPRING CREEK DIVIDE 9000 20.6 25.0 82 21.3 25.0 85 THUMB DIVIDE 7980 15.4 18.0 86 17.8 17.9 99 TOGWOTEE PASS 9580 24.7 23.3 106 27.0 23.1 117 TWO OCEAN PLATEAU 9240 32.7 26.2 125 -M 26.2 * WILLOW CREEK 8380 29.2 28.7 102 34.2 30.3 113 ----- ----- Basin wide percent of average 97 104 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 23.2 22.3 104 21.7 19.0 114 BLACK BEAR 8170 42.1 37.3 113 37.6 38.0 99 CANYON 7870 15.6 13.1 119 18.9 14.6 129 FISHER CREEK 9100 37.5 33.1 113 34.1 34.3 99 MADISON PLATEAU 7750 27.1 23.7 114 29.7 25.0 119 NORTHEAST ENTRANCE 7350 -M 10.8 * -M 12.0 * PARKER PEAK 9400 23.7 20.3 117 21.7 15.3 142 SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121 THUMB DIVIDE 7980 15.4 18.0 86 17.8 17.9 99 TWO OCEAN PLATEAU 9240 32.7 26.2 125 -M 26.2 * WHISKEY CREEK 6800 17.0 16.3 104 23.2 19.7 118 WHITE MILL 8700 24.7 22.9 108 24.4 25.5 96 WOLVERINE 7650 9.9 11.4 87 12.3 12.2 101 ----- ----- Basin wide percent of average 109 110 WIND RIVER BURROUGHS CREEK 8750 14.2 13.9 102 17.1 15.3 112 COLD SPRINGS 9630 5.9 8.3 71 9.0 9.6 94 DEER PARK 9700 13.9 15.7 89 18.3 20.3 90 HOBBS PARK 10100 12.5 13.5 93 12.9 11.4 113 LITTLE WARM 9370 8.7 10.9 80 12.2 12.3 99 SOUTH PASS 9040 13.1 15.9 82 16.0 17.0 94 ST. LAWRENCE ALT 8620 6.5 6.7 97 7.9 7.9 100 TOGWOTEE PASS 9580 24.7 23.3 106 27.0 23.1 117 TOWNSEND CREEK 8700 8.5 8.0 106 11.6 10.3 113 ----- ----- Basin wide percent of average 93 104 BIGHORN BASIN BALD MTN. 9380 15.2 18.1 84 14.1 16.0 88 BEAR TRAP MEADOW 8200 8.1 5.1 159 8.3 7.3 114 BLACKWATER 9780 22.3 23.0 97 20.7 19.2 108 BONE SPRINGS DIV 9350 15.3 14.9 103 15.8 13.3 119 EVENING STAR 9200 27.0 27.9 97 30.3 23.9 127 GRAVE SPRINGS 8550 9.3 8.5 109 9.9 8.9 111 KIRWIN 9550 10.9 10.4 105 12.9 10.3 125 MARQUETTE 8760 5.4 8.0 68 8.8 8.6 102 MIDDLE POWDER 7760 10.5 10.6 99 8.7 11.1 78 OWL CREEK 8975 5.1 5.0 102 6.1 5.1 120 POWDER RIVER PASS 9480 10.9 10.0 109 13.1 11.3 116 SHELL CREEK 9580 14.2 13.4 106 13.8 12.1 114 SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121 SYLVAN ROAD 7120 10.7 12.3 87 19.3 16.9 114 TIMBER CREEK 7950 3.9 5.2 75 7.5 6.4 117 YOUNTS PEAK 8350 15.2 16.2 94 16.2 15.2 107 ----- ----- Basin wide percent of average 97 112 SHOSHONE RIVER BLACKWATER 9780 22.3 23.0 97 20.7 19.2 108 EVENING STAR 9200 27.0 27.9 97 30.3 23.9 127 KIRWIN 9550 10.9 10.4 105 12.9 10.3 125 MARQUETTE 8760 5.4 8.0 68 8.8 8.6 102 SYLVAN LAKE 8420 19.4 21.1 92 23.9 19.8 121 SYLVAN ROAD 7120 10.7 12.3 87 19.3 16.9 114 YOUNTS PEAK 8350 15.2 16.2 94 16.2 15.2 107 ----- ----- Basin wide percent of average 93 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 8.1 5.1 159 8.3 7.3 114 BIG GOOSE 7990 7.5 9.1 82 10.5 7.6 138 BONE SPRINGS DIV 9350 15.3 14.9 103 15.8 13.3 119 BURGESS JUNCTION 7880 11.0 10.4 106 12.6 10.9 116 CLOUD PEAK RESERVOIR 9860 14.0 11.9 118 13.8 11.4 121 DOME LAKE 8880 9.7 11.1 87 13.0 11.7 111 GRAVE SPRINGS 8550 9.3 8.5 109 9.9 8.9 111 HANSEN SAWMILL 8360 5.9 6.0 98 8.2 7.3 112 MIDDLE POWDER 7760 10.5 10.6 99 8.7 11.1 78 POWDER RIVER PASS 9480 10.9 10.0 109 13.1 11.3 116 SUCKER CREEK 8880 12.7 10.5 121 14.7 12.1 121 TIE CREEK 6870 6.8 6.1 111 10.8 8.9 121 ----- ----- Basin wide percent of average 107 114 BELLE FOURCHE BLIND PARK 6890 7.0 8.5 82 9.8 10.3 95 COLE CANYON 5910 5.4 6.4 84 6.9 6.1 113 NORTH RAPID CREEK 6130 7.8 7.7 101 7.9 8.1 98 ----- ----- Basin wide percent of average 89 100 UPPER N. PLATTE RIVER COLUMBINE 9160 25.5 24.2 105 26.3 23.5 112 DIVIDE PEAK 8880 21.1 18.3 115 21.6 19.3 112 ELK RIVER 8700 24.2 18.2 133 21.9 18.2 120 JOE WRIGHT 10120 21.3 19.6 109 24.9 22.9 109 NORTH FRENCH CREEK 10130 28.4 26.4 108 27.4 22.9 120 OLD BATTLE 10000 30.8 30.0 103 33.7 32.3 104 SAGE CREEK BASIN 7850 16.5 10.6 156 16.8 11.2 150 SOUTH BRUSH CREEK 8440 12.7 12.1 105 15.8 15.0 105 TOWER 10500 39.6 42.3 94 -M 35.9 * WEBBER SPRINGS 9250 24.0 25.0 96 27.7 24.9 111 WILLOW CREEK PASS 9540 14.4 10.9 132 14.4 11.8 122 ----- ----- Basin wide percent of average 109 114 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 19.3 21.7 89 19.9 20.1 99 CASPER MTN. 7900 12.2 12.9 95 13.1 12.8 102 DEADMAN HILL 10220 15.7 14.8 106 16.2 15.4 105 DEER PARK 9700 13.9 15.7 89 18.3 20.3 90 LAPRELE CREEK 8375 7.1 10.3 69 9.8 11.5 85 RENO HILL 8400 12.3 12.5 98 14.0 13.3 105 ROACH 9700 17.8 15.7 113 20.3 17.2 118 SAND LAKE 10050 25.4 29.7 86 25.2 22.1 114 SOUTH PASS 9040 13.1 15.9 82 16.0 17.0 94 WINDY PEAK 7900 7.5 7.4 101 8.8 9.6 92 ----- ----- Basin wide percent of average 92 101 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 15.8 11.5 137 15.7 14.4 109 DIVIDE PEAK 8880 21.1 18.3 115 21.6 19.3 112 OLD BATTLE 10000 30.8 30.0 103 33.7 32.3 104 SANDSTONE RS 8150 16.5 14.6 113 20.0 17.6 114 WHISKEY PARK 8950 29.0 28.2 103 31.0 26.6 117 ----- ----- Basin wide percent of average 110 111 UPPER GREEN RIVER BIG SANDY OPENING 9080 11.6 13.6 85 11.7 12.6 93 BLIND BULL SUM 8650 22.8 26.4 86 16.8 21.0 80 EAST RIM DIVIDE 7930 8.1 12.4 65 10.2 11.4 89 ELKHART PARK G.S. 9400 10.3 12.6 82 10.8 12.4 87 GROS VENTRE SUMMIT 8750 11.8 13.3 89 12.8 12.1 106 GUNSIGHT PASS 9820 10.9 -M * 12.9 -M * KENDALL R.S. 7740 11.0 14.2 77 12.6 13.9 91 LOOMIS PARK 8240 14.5 16.6 87 16.0 16.5 97 NEW FORK LAKE 8340 8.9 10.7 83 8.8 10.7 82 SNIDER BASIN 8060 12.0 13.9 86 12.9 15.2 85 SPRING CREEK DIVIDE 9000 20.6 25.0 82 21.3 25.0 85 TRIPLE PEAK 8500 22.3 23.6 94 25.4 23.3 109 ----- ----- Basin wide percent of average 84 91 LOWER GREEN RIVER HAMS FORK 7840 11.1 12.4 90 9.2 11.5 80 HEWINTA 9519 14.1 10.8 131 16.2 13.4 121 HICKERSON PARK 9145 7.5 6.7 112 9.7 7.2 135 HOLE-IN-ROCK 9150 6.9 6.5 106 10.1 6.7 151 INDIAN CREEK 9425 21.9 25.9 85 -M 23.7 * KELLEY R.S. 8180 13.2 16.0 82 15.9 19.1 83 STEEL CREEK PARK 10200 14.8 14.6 101 17.9 14.7 122 ----- ----- Basin wide percent of average 96 109 UPPER BEAR RIVER BUG LAKE 7950 16.7 19.7 85 15.8 18.1 87 HAYDEN FORK 9212 19.0 15.3 124 22.1 19.4 114 KELLEY R.S. 8180 13.2 16.0 82 15.9 19.1 83 LILY LAKE 9156 14.4 12.2 118 16.9 16.1 105 MONTE CRISTO 8960 26.7 28.3 94 24.8 23.8 104 SALT RIVER SUMMIT 7760 12.5 13.7 91 14.5 17.6 82 TRIAL LAKE 9992 20.5 23.6 87 22.7 23.3 97 ----- ----- Basin wide percent of average 95 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.